Directory reorg: Put renderer into its own subdir

24 files changed, 3134 insertions, 0 deletions

diff --git a/renderer/Makefile b/renderer/Makefile
new file mode 100644
index 0000000..0c6f340
--- /dev/null
+++ b/renderer/Makefile
@@ -0,0 +1,35 @@
+# Environment variables:
+# INKSCAPE_DXF_FLATNESS controls inkscape SVG->DXF export curve flatness (default: 0.1)
+# INKSCAPE, OPENSCAD: Commands to use for inkscape and openscad
+
+OPENSCAD ?= openscad
+
+all: out.zip
+	
+out.zip: out/jig.stl out/pcb_shape.dxf out/kicad
+	zip -r out.zip out
+
+src/input.preprocessed.dxf: src/input.preprocessed.svg
+	support/inkscape_exporter.py $< $@
+
+out/pcb_shape.dxf: src/pcb_shape.scad src/input.preprocessed.dxf out
+	$(OPENSCAD) -o $@ $<
+
+out/jig.stl: src/jig.scad src/input.preprocessed.dxf
+	$(OPENSCAD) -o $@ $<
+
+out/kicad: input.svg out/pcb_shape.dxf
+	support/generate_kicad.py $^ $@
+
+src/input.preprocessed.svg: input.svg
+	support/inkscape_svg_filter_layers.py $< $@ --only --name "Test Points" "Mounting Holes" "Grip Slots" "Outline"
+
+out:
+	mkdir -p out
+
+.PHONY: clean
+clean:
+	rm -f src/input.preprocessed.dxf
+	rm -f src/input.preprocessed.svg
+	rm -rf out
+
diff --git a/renderer/src/_lib.scad b/renderer/src/_lib.scad
new file mode 100644
index 0000000..2654ed7
--- /dev/null
+++ b/renderer/src/_lib.scad
@@ -0,0 +1,83 @@
+
+module hole(l, step, w){
+    translate([0, 0, -eps]) {
+        union(){
+            linear_extrude(l+eps*2)
+                children();
+            minkowski(){
+                linear_extrude(eps) children();
+                cylinder(step, w, 0);
+            }
+        }
+        marker_r = 4;
+        marker_w = 1;
+        linear_extrude(1)
+        difference() {
+            offset(marker_r+0.5*marker_w) children();
+            offset(marker_r-0.5*marker_w) children();
+        }
+    }
+}
+
+module top_chamfer(height, chamfer){
+    difference(){
+        linear_extrude(height) children();
+        translate([0,0,height+eps])
+        union() {
+            for(w=[0:.2:chamfer]){
+                mirror([0,0,1])
+                linear_extrude(chamfer-w)
+                difference(){
+                    offset(1) children();
+                    offset(-w) children();
+                }
+            }
+        }
+    }
+}
+
+module base_shape(wall){
+    offset(grip_rounding) offset(-grip_rounding)difference(){
+        hull() offset(wall)
+            children();
+        import(input_file, layer="Grip Slots");
+    }
+}
+
+module holder(height, depth, wall, tolerance, chamfer){
+    difference() {
+        top_chamfer(height, chamfer/2) 
+        //linear_extrude(height)
+        base_shape(wall) children();
+        translate([0,0,height-depth])
+        linear_extrude(depth+eps) offset(tolerance)
+            children();
+        translate([0,0,height-chamfer+eps]) minkowski(){
+            linear_extrude(eps) children();
+            cylinder(chamfer, 0, chamfer);
+        }
+    }
+}
+
+module mounting_hole(height, inset_depth, inset_extra){
+    union(){
+        translate([0,0,-eps])
+            linear_extrude(height+2*eps)
+                children();
+        translate([0,0,height-inset_depth])
+            linear_extrude(inset_depth+eps)
+                offset(inset_extra)
+                    children();
+    }
+}
+
+module jig(height, depth, wall, tolerance, chamfer) {
+    difference(){
+        holder(height, depth, wall, tolerance, chamfer)
+            import(input_file, layer="Outline");
+        hole(height-depth, 2, 1)
+            import(input_file, layer="Test Points");
+        mounting_hole(height, 3, 2)
+            import(input_file, layer="Mounting Holes");
+    }
+}
diff --git a/renderer/src/_settings.scad b/renderer/src/_settings.scad
new file mode 100644
index 0000000..f51736a
--- /dev/null
+++ b/renderer/src/_settings.scad
@@ -0,0 +1,12 @@
+
+height=15;
+depth=6;
+wall=10;
+pcb_extra=7;
+tolerance=0.2;
+chamfer=3;
+grip_rounding = 1.5;
+
+input_file = "input.preprocessed.dxf";
+$fs=0.01;
+eps=0.1;
diff --git a/renderer/src/jig.scad b/renderer/src/jig.scad
new file mode 100644
index 0000000..d953f29
--- /dev/null
+++ b/renderer/src/jig.scad
@@ -0,0 +1,4 @@
+include <_settings.scad>
+include <_lib.scad>
+
+jig(height, depth, wall, tolerance, chamfer);
\ No newline at end of file
diff --git a/renderer/src/pcb_shape.scad b/renderer/src/pcb_shape.scad
new file mode 100644
index 0000000..a3e1db9
--- /dev/null
+++ b/renderer/src/pcb_shape.scad
@@ -0,0 +1,8 @@
+include <_settings.scad>
+include <_lib.scad>
+
+difference(){
+    base_shape(wall+pcb_extra)
+        import(input_file, layer="Outline");
+    import(input_file, layer="Mounting Holes");
+}
\ No newline at end of file
diff --git a/renderer/support/generate_kicad.py b/renderer/support/generate_kicad.py
new file mode 100755
index 0000000..3e1b614
--- /dev/null
+++ b/renderer/support/generate_kicad.py
@@ -0,0 +1,322 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import time
+from os import path
+from textwrap import dedent
+import pkgutil
+import subprocess
+import xml.etree.ElementTree as xe
+
+import ezdxf
+
+
+__version__ = '0.1'
+
+PIN_TS_BASE = 0x23420000
+TEDIT_BASE = 0x23430000
+PATH_BASE = 0x23440000
+
+
+def sch_template(name, num_pins, yspace=200):
+    templ = f'''
+        EESchema Schematic File Version 5
+        EELAYER 30 0
+        EELAYER END
+        $Descr A3 16535 11693
+        encoding utf-8
+        Sheet 1 1
+        Title "{name}"
+        Date "{time.strftime("%d %b %Y")}"
+        Rev ""
+        Comp ""
+        Comment1 ""
+        Comment2 ""
+        Comment3 ""
+        Comment4 ""
+        Comment5 ""
+        Comment6 ""
+        Comment7 ""
+        Comment8 ""
+        Comment9 ""
+        $EndDescr
+        {{components}}
+        $EndSCHEMATC
+    '''
+
+    components = []
+    for i in range(num_pins):
+        identifier = f'TP{i}'
+        value = 'pogopin'
+        x, y = 1000, 1000 + i*yspace
+        components.append(dedent(f'''
+            $Comp
+            L Connector:Conn_01x01_Female {identifier}
+            U 1 1 {PIN_TS_BASE + i:08X}
+            P {x} {y}
+            F 0 "{identifier}" H {x-50} {y+50} 50  0000 R CNN
+            F 1 "{value}" H {x+50} {y} 50  0000 L CNN
+            F 2 "Pogopin:AutogeneratedPogopinFootprint" H {x} {y} 50  0001 C CNN
+            F 3 "~" H {x} {y} 50  0001 C CNN
+                    1    {x} {y}
+                    -1   0    0    1   
+            $EndComp
+            ''').strip())
+
+    return dedent(templ).lstrip().format(components='\n'.join(components))
+
+def pcb_template(outline, pins, annular=0.5):
+    pcb_templ = f'''
+        (kicad_pcb (version 20190605) (host pogojig "({__version__})")
+
+          (general
+            (thickness 1.6)
+            (drawings {len(pins)})
+            (tracks 0)
+            (modules {len(pins)})
+            (nets {len(pins)+1})
+          )
+
+          (page "A4")
+          (layers
+            (0 "F.Cu" signal)
+            (31 "B.Cu" signal)
+            (32 "B.Adhes" user)
+            (33 "F.Adhes" user)
+            (34 "B.Paste" user)
+            (35 "F.Paste" user)
+            (36 "B.SilkS" user)
+            (37 "F.SilkS" user)
+            (38 "B.Mask" user)
+            (39 "F.Mask" user)
+            (40 "Dwgs.User" user)
+            (41 "Cmts.User" user)
+            (42 "Eco1.User" user)
+            (43 "Eco2.User" user)
+            (44 "Edge.Cuts" user)
+            (45 "Margin" user)
+            (46 "B.CrtYd" user)
+            (47 "F.CrtYd" user)
+            (48 "B.Fab" user)
+            (49 "F.Fab" user)
+          )
+
+          (setup
+            (last_trace_width 0.25)
+            (trace_clearance 0.2)
+            (zone_clearance 0.508)
+            (zone_45_only no)
+            (trace_min 0.2)
+            (via_size 0.8)
+            (via_drill 0.4)
+            (via_min_size 0.4)
+            (via_min_drill 0.3)
+            (uvia_size 0.3)
+            (uvia_drill 0.1)
+            (uvias_allowed no)
+            (uvia_min_size 0.2)
+            (uvia_min_drill 0.1)
+            (max_error 0.005)
+            (defaults
+              (edge_clearance 0.01)
+              (edge_cuts_line_width 0.05)
+              (courtyard_line_width 0.05)
+              (copper_line_width 0.2)
+              (copper_text_dims (size 1.5 1.5) (thickness 0.3) keep_upright)
+              (silk_line_width 0.12)
+              (silk_text_dims (size 1 1) (thickness 0.15) keep_upright)
+              (other_layers_line_width 0.1)
+              (other_layers_text_dims (size 1 1) (thickness 0.15) keep_upright)
+            )
+            (pad_size 3.14159 3.14159)
+            (pad_drill 1.41421)
+            (pad_to_mask_clearance 0.051)
+            (solder_mask_min_width 0.25)
+            (aux_axis_origin 0 0)
+            (visible_elements FFFFFF7F)
+            (pcbplotparams
+              (layerselection 0x010fc_ffffffff)
+              (usegerberextensions false)
+              (usegerberattributes false)
+              (usegerberadvancedattributes false)
+              (creategerberjobfile false)
+              (excludeedgelayer true)
+              (linewidth 0.100000)
+              (plotframeref false)
+              (viasonmask false)
+              (mode 1)
+              (useauxorigin false)
+              (hpglpennumber 1)
+              (hpglpenspeed 20)
+              (hpglpendiameter 15.000000)
+              (psnegative false)
+              (psa4output false)
+              (plotreference true)
+              (plotvalue true)
+              (plotinvisibletext false)
+              (padsonsilk false)
+              (subtractmaskfromsilk false)
+              (outputformat 1)
+              (mirror false)
+              (drillshape 1)
+              (scaleselection 1)
+              (outputdirectory ""))
+          )
+
+          (net 0 "")
+          {{net_defs}}
+
+          (net_class "Default" "This is the default net class."
+            (clearance 0.2)
+            (trace_width 0.25)
+            (via_dia 0.8)
+            (via_drill 0.4)
+            (uvia_dia 0.3)
+            (uvia_drill 0.1)
+            {{net_class_defs}}
+          )
+          
+          {{module_defs}}
+
+          {{edge_cuts}}
+        )'''
+
+    module_defs = []
+    for i, pin in enumerate(pins):
+        (x, y), hole_dia = pin # all dimensions in mm here
+        pad_dia = hole_dia + 2*annular
+        mod = f'''
+          (module "Pogopin:AutogeneratedPogopinFootprint" (layer "F.Cu") (tedit {TEDIT_BASE + i:08X}) (tstamp {PIN_TS_BASE + i:08X})
+            (at {x} {y})
+            (descr "Pogo pin {i}")
+            (tags "test point plated hole")
+            (path "/{PATH_BASE + i:08X}")
+            (attr virtual)
+            (fp_text reference "TP{i}" (at 0 -{pad_dia/2 + 1}) (layer "F.SilkS")
+              (effects (font (size 1 1) (thickness 0.15)))
+            )
+            (fp_text value "pogo pin {i}" (at 0 {pad_dia/2 + 1}) (layer "F.Fab")
+              (effects (font (size 1 1) (thickness 0.15)))
+            )
+            (fp_text user "%R" (at 0 -{pad_dia/2 + 1}) (layer "F.Fab")
+              (effects (font (size 1 1) (thickness 0.15)))
+            )
+            (fp_circle (center 0 0) (end {pad_dia} 0) (layer "F.CrtYd") (width 0.05))
+            (fp_circle (center 0 0) (end 0 -{pad_dia}) (layer "F.SilkS") (width 0.12))
+            (pad "1" thru_hole circle (at 0 0) (size {pad_dia} {pad_dia}) (drill {hole_dia}) (layers *.Cu *.Mask)
+              (net {i+1} "pogo{i}"))
+          )'''
+        module_defs.append(mod)
+
+    edge_cuts = [ f'(gr_line (start {x1} {y1}) (end {x2} {y2}) (layer "Edge.Cuts") (width 0.05))'
+                  for (x1, y1), (x2, y2) in outline ]
+
+    net_defs = [ f'(net {i+1} "pogo{i}")' for i, _pin in enumerate(pins) ]
+    net_class_defs = [ f'(add_net "pogo{i}")' for i, _pin in enumerate(pins) ]
+    return pcb_templ.format(
+            net_defs='\n'.join(net_defs),
+            net_class_defs='\n'.join(net_class_defs),
+            module_defs='\n'.join(module_defs),
+            edge_cuts='\n'.join(edge_cuts))
+
+def inkscape_query_all(filename):
+    proc = subprocess.run([ os.environ.get('INKSCAPE', 'inkscape'), filename, '--query-all'], capture_output=True)
+    proc.check_returncode()
+    data = [ line.split(',') for line in proc.stdout.decode().splitlines() ]
+    return { id: (float(x), float(y), float(w), float(h)) for id, x, y, w, h in data }
+
+SVG_NS = {
+        'svg': 'http://www.w3.org/2000/svg',
+        'inkscape': 'http://www.inkscape.org/namespaces/inkscape',
+        'sodipodi': 'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd'
+}
+
+def svg_find_elements(doc, tag, layer=None):
+    for i, g in enumerate(doc.findall('svg:g', SVG_NS)):
+        if g.attrib.get(f'{{{SVG_NS["inkscape"]}}}groupmode') != 'layer':
+            continue
+
+        label = g.attrib.get(f'{{{SVG_NS["inkscape"]}}}label', '')
+        if not layer or label == layer:
+            yield from g.iter(tag)
+
+# def svg_get_scale(doc):
+#     w = doc.attrib['width']
+#     h = doc.attrib['height']
+# 
+#     if not w.endswith('mm') and h.endswith('mm'):
+#         raise ValueError('Document dimensions in SVG must be set to millimeters')
+# 
+#     w, h = float(w[:-2]), float(h[:-2])
+#     _x, _y, vb_w, vb_h = map(float, doc.attrib['viewBox'].split())
+#     scale_x, scale_y = vb_w / w, vb_h / h
+#     assert abs(1 - scale_x/scale_y) < 0.001
+#     return scale_x
+
+def svg_get_viewbox_mm(doc):
+    w = doc.attrib['width']
+    h = doc.attrib['height']
+
+    if not w.endswith('mm') and h.endswith('mm'):
+        raise ValueError('Document dimensions in SVG must be set to millimeters')
+
+    w, h = float(w[:-2]), float(h[:-2])
+    x, y, vb_w, vb_h = map(float, doc.attrib['viewBox'].split())
+    scale_x, scale_y = vb_w / w, vb_h / h
+    return x/scale_x, y/scale_y, w, h
+
+if __name__ == '__main__':
+    import argparse
+    parser = argparse.ArgumentParser()
+    parser.add_argument('svg', metavar='pogo_map.svg', help='Input inkscape SVG pogo pin map (use provided template!)')
+    parser.add_argument('outline', metavar='outline.dxf', help='Board outline DXF generated by OpenSCAD')
+    parser.add_argument('output', default='kicad', help='Output directory/project name and path')
+    parser.add_argument('-y', '--yspace', type=int, default=200, help='Schematic pin Y spacing in mil (default: 200)')
+    parser.add_argument('-a', '--annular', type=float, default=0.5, help='Pogo pin annular ring width in mm (default: 0.5)')
+    parser.add_argument('-l', '--svg-layer', type=str, default='Test Points', help='Name of SVG layer containing pogo pins')
+    parser.add_argument('-n', '--name', default='jig', help='Output KiCAD project name')
+    args = parser.parse_args()
+
+    if not path.exists(args.output):
+        os.mkdir(args.output)
+
+    if not path.isdir(args.output):
+        raise SystemError(f'Output path "{args.output}" is not a directory')
+
+    with open(args.svg, 'r') as f:
+        doc = xe.fromstring(f.read())
+    pogo_circle_ids = [ circle.attrib['id'] for circle in svg_find_elements(doc, f'{{{SVG_NS["svg"]}}}circle', args.svg_layer) ]
+    # scale = svg_get_scale(doc)
+    page_x, page_y, page_w, page_h = svg_get_viewbox_mm(doc)
+    MM_PER_IN = 25.4
+    SVG_DEF_DPI = 96
+    px_to_mm = lambda px: px/SVG_DEF_DPI * MM_PER_IN
+    query = inkscape_query_all(args.svg)
+    dims = [ query[id] for id in pogo_circle_ids ]
+    assert all( abs(1 - w/h) < 0.001 for _x, _y, w, h in dims )
+    print('origin:', page_x, page_y)
+    print('dims:', page_w, page_h)
+    pins = [ (
+                (page_x + px_to_mm(x) + px_to_mm(w)/2,
+                 page_y - page_h + px_to_mm(y) + px_to_mm(w)/2),
+                px_to_mm(w)) for x, y, w, h in dims ]
+
+    doc = ezdxf.readfile(args.outline)
+    outline = []
+    for line in doc.modelspace().query('LINE'):
+        (x1, y1, _z1), (x2, y2, _z2) = line.dxf.start, line.dxf.end
+        outline.append(((x1, -y1), (x2, -y2)))
+
+    with open(path.join(args.output, f'{args.name}.sch'), 'w', encoding='utf8') as sch:
+        sch.write(sch_template(f'{args.name} generated schematic (PogoJig v{__version__})', len(pins), yspace=args.yspace))
+
+    with open(path.join(args.output, f'{args.name}.kicad_pcb'), 'w', encoding='utf8') as pcb:
+        pcb.write(pcb_template(outline, pins, annular=args.annular))
+
+    with open(path.join(args.output, f'{args.name}.pro'), 'w', encoding='utf8') as f:
+        f.write(pkgutil.get_data('pogojig.kicad', 'kicad.pro').decode('utf8'))
+
+    with open(path.join(args.output, f'{args.name}-cache.lib'), 'w', encoding='utf8') as f:
+        f.write(pkgutil.get_data('pogojig.kicad', 'kicad-cache.lib').decode('utf8'))
+
diff --git a/renderer/support/inkscape_exporter.py b/renderer/support/inkscape_exporter.py
new file mode 100755
index 0000000..25fcabe
--- /dev/null
+++ b/renderer/support/inkscape_exporter.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+
+import os
+import shutil
+import tempfile
+
+from pogojig.inkscape import effect, inkscape
+
+from xvfbwrapper import Xvfb
+
+
+def _unfuck_svg_document(temp_svg_path):
+    """
+    Unfucks an SVG document so is can be processed by the better_dxf_export
+    plugin (or what's left of it).
+    """
+    command_line = inkscape.InkscapeCommandLine(temp_svg_path)
+    layers = command_line.layers
+    
+    command_line.apply_to_document('LayerUnlockAll', 'LayerShowAll')
+    
+    layer_copies = []
+    
+    for i in layers:
+        layer_copy = command_line.duplicate_layer(i)
+        layer_copies.append(layer_copy)
+        
+        command_line.apply_to_layer_content(layer_copy, 'ObjectToPath')
+        command_line.apply_to_layer_content(layer_copy, 'SelectionUnGroup')
+        
+        if not i.use_paths:
+            command_line.apply_to_layer_content(layer_copy, 'StrokeToPath')
+            command_line.apply_to_layer_content(layer_copy, 'SelectionUnion')
+    
+    for original, copy in zip(layers, layer_copies):
+        command_line.clear_layer(original)
+        command_line.move_content(copy, original)
+        command_line.delete_layer(copy)
+    
+    command_line.apply_to_document('FileSave', 'FileClose', 'FileQuit')
+    command_line.run()
+
+
+if __name__ == '__main__':
+    import argparse
+    parser = argparse.ArgumentParser()
+    parser.add_argument('infile', metavar='input.svg', help='Inkscape SVG input file')
+    parser.add_argument('outfile', metavar='output.dxf', help='DXF output file')
+    args = parser.parse_args()
+
+    with Xvfb():
+        effect.ExportEffect.check_document_units(args.infile)
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            temp_svg_path = os.path.join(tmpdir, os.path.basename(args.infile))
+            shutil.copyfile(args.infile, temp_svg_path)
+
+            _unfuck_svg_document(temp_svg_path)
+
+            export_effect = effect.ExportEffect()
+            export_effect.affect(args=[temp_svg_path], output=False)
+
+        with open(args.outfile, 'w') as f:
+            export_effect.write_dxf(f)
+
diff --git a/renderer/support/inkscape_svg_filter_layers.py b/renderer/support/inkscape_svg_filter_layers.py
new file mode 100755
index 0000000..9301e1e
--- /dev/null
+++ b/renderer/support/inkscape_svg_filter_layers.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+
+import xml.etree.ElementTree as xe
+import argparse
+import re
+
+
+if __name__ != '__main__':
+    raise SystemError('Not running as shell script')
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('infile', metavar='input.svg', type=argparse.FileType('r'))
+parser.add_argument('outfile', metavar='output.svg', type=argparse.FileType('wb'))
+parser.add_argument('-n', '--name', nargs='+', default=[], help='Remove layers with this exact name (case-insensitive)')
+parser.add_argument('-r', '--regex', nargs='+', default=[], help='Remove layers with names matching this regex')
+parser.add_argument('-i', '--invisible', action='store_true', help='Remove hidden (invisible) layers')
+parser.add_argument('-o', '--only', action='store_true', help='Invert logic, i.e. keep matched layers and discard others')
+parser.add_argument('-d', '--strip-defs', action='store_true', help='Also strip any <defs> tags (off by default)')
+args = parser.parse_args()
+
+doc = xe.fromstring(args.infile.read())
+ns = {
+        'svg': 'http://www.w3.org/2000/svg',
+        'inkscape': 'http://www.inkscape.org/namespaces/inkscape',
+        'sodipodi': 'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd'
+}
+
+if args.strip_defs:
+    for elem in doc.findall('svg:defs', ns):
+        doc.remove(elem)
+
+for i, g in enumerate(doc.findall('svg:g', ns)):
+    if g.attrib.get(f'{{{ns["inkscape"]}}}groupmode') != 'layer':
+        continue
+
+    label = g.attrib.get(f'{{{ns["inkscape"]}}}label', '')
+    match = (
+            any(label == name for name in args.name) or
+            any(re.match(regex, label) for regex in args.regex) or
+            ('display:none' in g.attrib.get('style', '') and args.hidden)
+            )
+    print(f'Layer {i} "{label}": {"match" if match else "not found"}', end='')
+
+    if match != args.only:
+        print(', removing.')
+        doc.remove(g)
+    else:
+        print()
+
+args.outfile.write(xe.tostring(doc))
diff --git a/renderer/support/pogojig/__init__.py b/renderer/support/pogojig/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/renderer/support/pogojig/__init__.py
diff --git a/renderer/support/pogojig/inkscape/__init__.py b/renderer/support/pogojig/inkscape/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/__init__.py
diff --git a/renderer/support/pogojig/inkscape/bezmisc.py b/renderer/support/pogojig/inkscape/bezmisc.py
new file mode 100644
index 0000000..68a338d
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/bezmisc.py
@@ -0,0 +1,287 @@
+#!/usr/bin/env python
+'''
+Copyright (C) 2010 Nick Drobchenko, nick@cnc-club.ru
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+'''
+
+import math, cmath
+
+def rootWrapper(a,b,c,d):
+    if a:
+        # Monics formula see http://en.wikipedia.org/wiki/Cubic_function#Monic_formula_of_roots
+        a,b,c = (b/a, c/a, d/a)
+        m = 2.0*a**3 - 9.0*a*b + 27.0*c
+        k = a**2 - 3.0*b
+        n = m**2 - 4.0*k**3
+        w1 = -.5 + .5*cmath.sqrt(-3.0)
+        w2 = -.5 - .5*cmath.sqrt(-3.0)
+        if n < 0:
+            m1 = pow(complex((m+cmath.sqrt(n))/2),1./3)
+            n1 = pow(complex((m-cmath.sqrt(n))/2),1./3)
+        else:
+            if m+math.sqrt(n) < 0:
+                m1 = -pow(-(m+math.sqrt(n))/2,1./3)
+            else:
+                m1 = pow((m+math.sqrt(n))/2,1./3)
+            if m-math.sqrt(n) < 0:
+                n1 = -pow(-(m-math.sqrt(n))/2,1./3)
+            else:
+                n1 = pow((m-math.sqrt(n))/2,1./3)
+        x1 = -1./3 * (a + m1 + n1)
+        x2 = -1./3 * (a + w1*m1 + w2*n1)
+        x3 = -1./3 * (a + w2*m1 + w1*n1)
+        return (x1,x2,x3)
+    elif b:
+        det=c**2.0-4.0*b*d
+        if det:
+            return (-c+cmath.sqrt(det))/(2.0*b),(-c-cmath.sqrt(det))/(2.0*b)
+        else:
+            return -c/(2.0*b),
+    elif c:
+        return 1.0*(-d/c),
+    return ()
+
+def bezierparameterize(points):
+    #parametric bezier
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = points
+    x0=bx0
+    y0=by0
+    cx=3*(bx1-x0)
+    bx=3*(bx2-bx1)-cx
+    ax=bx3-x0-cx-bx
+    cy=3*(by1-y0)
+    by=3*(by2-by1)-cy
+    ay=by3-y0-cy-by
+
+    return ax,ay,bx,by,cx,cy,x0,y0
+    #ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+
+def linebezierintersect(line, bezier):
+    #parametric line
+    ((lx1,ly1),(lx2,ly2)) = line
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = bezier
+    dd=lx1
+    cc=lx2-lx1
+    bb=ly1
+    aa=ly2-ly1
+
+    if aa:
+        coef1=cc/aa
+        coef2=1
+    else:
+        coef1=1
+        coef2=aa/cc
+
+    ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+    #cubic intersection coefficients
+    a=coef1*ay-coef2*ax
+    b=coef1*by-coef2*bx
+    c=coef1*cy-coef2*cx
+    d=coef1*(y0-bb)-coef2*(x0-dd)
+
+    roots = rootWrapper(a,b,c,d)
+    retval = []
+    for i in roots:
+        if type(i) is complex and i.imag==0:
+            i = i.real
+        if type(i) is not complex and 0<=i<=1:
+            retval.append(bezierpointatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),i))
+    return retval
+
+def bezierpointatt(xxx_todo_changeme3,t):
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = xxx_todo_changeme3
+    ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+    x=ax*(t**3)+bx*(t**2)+cx*t+x0
+    y=ay*(t**3)+by*(t**2)+cy*t+y0
+    return x,y
+
+def bezierslopeatt(xxx_todo_changeme4,t):
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = xxx_todo_changeme4
+    ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+    dx=3*ax*(t**2)+2*bx*t+cx
+    dy=3*ay*(t**2)+2*by*t+cy
+    return dx,dy
+
+def beziertatslope(xxx_todo_changeme5, xxx_todo_changeme6):
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = xxx_todo_changeme5
+    (dy,dx) = xxx_todo_changeme6
+    ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+    #quadratic coefficents of slope formula
+    if dx:
+        slope = 1.0*(dy/dx)
+        a=3*ay-3*ax*slope
+        b=2*by-2*bx*slope
+        c=cy-cx*slope
+    elif dy:
+        slope = 1.0*(dx/dy)
+        a=3*ax-3*ay*slope
+        b=2*bx-2*by*slope
+        c=cx-cy*slope
+    else:
+        return []
+
+    roots = rootWrapper(0,a,b,c)
+    retval = []
+    for i in roots:
+        if type(i) is complex and i.imag==0:
+            i = i.real
+        if type(i) is not complex and 0<=i<=1:
+            retval.append(i)
+    return retval
+
+def tpoint(xxx_todo_changeme7, xxx_todo_changeme8,t):
+    (x1,y1) = xxx_todo_changeme7
+    (x2,y2) = xxx_todo_changeme8
+    return x1+t*(x2-x1),y1+t*(y2-y1)
+def beziersplitatt(xxx_todo_changeme9,t):
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = xxx_todo_changeme9
+    m1=tpoint((bx0,by0),(bx1,by1),t)
+    m2=tpoint((bx1,by1),(bx2,by2),t)
+    m3=tpoint((bx2,by2),(bx3,by3),t)
+    m4=tpoint(m1,m2,t)
+    m5=tpoint(m2,m3,t)
+    m=tpoint(m4,m5,t)
+    
+    return ((bx0,by0),m1,m4,m),(m,m5,m3,(bx3,by3))
+
+'''
+Approximating the arc length of a bezier curve
+according to <http://www.cit.gu.edu.au/~anthony/info/graphics/bezier.curves>
+
+if:
+    L1 = |P0 P1| +|P1 P2| +|P2 P3| 
+    L0 = |P0 P3|
+then: 
+    L = 1/2*L0 + 1/2*L1
+    ERR = L1-L0
+ERR approaches 0 as the number of subdivisions (m) increases
+    2^-4m
+
+Reference:
+Jens Gravesen <gravesen@mat.dth.dk>
+"Adaptive subdivision and the length of Bezier curves"
+mat-report no. 1992-10, Mathematical Institute, The Technical
+University of Denmark. 
+'''
+def pointdistance(xxx_todo_changeme10, xxx_todo_changeme11):
+    (x1,y1) = xxx_todo_changeme10
+    (x2,y2) = xxx_todo_changeme11
+    return math.sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2))
+def Gravesen_addifclose(b, len, error = 0.001):
+    box = 0
+    for i in range(1,4):
+        box += pointdistance(b[i-1], b[i])
+    chord = pointdistance(b[0], b[3])
+    if (box - chord) > error:
+        first, second = beziersplitatt(b, 0.5)
+        Gravesen_addifclose(first, len, error)
+        Gravesen_addifclose(second, len, error)
+    else:
+        len[0] += (box / 2.0) + (chord / 2.0)
+def bezierlengthGravesen(b, error = 0.001):
+    len = [0]
+    Gravesen_addifclose(b, len, error)
+    return len[0]
+
+# balf = Bezier Arc Length Function
+balfax,balfbx,balfcx,balfay,balfby,balfcy = 0,0,0,0,0,0
+def balf(t):
+    retval = (balfax*(t**2) + balfbx*t + balfcx)**2 + (balfay*(t**2) + balfby*t + balfcy)**2
+    return math.sqrt(retval)
+
+def Simpson(f, a, b, n_limit, tolerance):
+    n = 2
+    multiplier = (b - a)/6.0
+    endsum = f(a) + f(b)
+    interval = (b - a)/2.0
+    asum = 0.0
+    bsum = f(a + interval)
+    est1 = multiplier * (endsum + (2.0 * asum) + (4.0 * bsum))
+    est0 = 2.0 * est1
+    #print multiplier, endsum, interval, asum, bsum, est1, est0
+    while n < n_limit and abs(est1 - est0) > tolerance:
+        n *= 2
+        multiplier /= 2.0
+        interval /= 2.0
+        asum += bsum
+        bsum = 0.0
+        est0 = est1
+        for i in range(1, n, 2):
+            bsum += f(a + (i * interval))
+            est1 = multiplier * (endsum + (2.0 * asum) + (4.0 * bsum))
+    #print multiplier, endsum, interval, asum, bsum, est1, est0
+    return est1
+
+def bezierlengthSimpson(xxx_todo_changeme12, tolerance = 0.001):
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = xxx_todo_changeme12
+    global balfax,balfbx,balfcx,balfay,balfby,balfcy
+    ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+    balfax,balfbx,balfcx,balfay,balfby,balfcy = 3*ax,2*bx,cx,3*ay,2*by,cy
+    return Simpson(balf, 0.0, 1.0, 4096, tolerance)
+
+def beziertatlength(xxx_todo_changeme13, l = 0.5, tolerance = 0.001):
+    ((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)) = xxx_todo_changeme13
+    global balfax,balfbx,balfcx,balfay,balfby,balfcy
+    ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+    balfax,balfbx,balfcx,balfay,balfby,balfcy = 3*ax,2*bx,cx,3*ay,2*by,cy
+    t = 1.0
+    tdiv = t
+    curlen = Simpson(balf, 0.0, t, 4096, tolerance)
+    targetlen = l * curlen
+    diff = curlen - targetlen
+    while abs(diff) > tolerance:
+        tdiv /= 2.0
+        if diff < 0:
+            t += tdiv
+        else:
+            t -= tdiv            
+        curlen = Simpson(balf, 0.0, t, 4096, tolerance)
+        diff = curlen - targetlen
+    return t
+
+#default bezier length method
+bezierlength = bezierlengthSimpson
+
+if __name__ == '__main__':
+    #print linebezierintersect(((,),(,)),((,),(,),(,),(,)))
+    #print linebezierintersect(((0,1),(0,-1)),((-1,0),(-.5,0),(.5,0),(1,0)))
+    tol = 0.00000001
+    curves = [((0,0),(1,5),(4,5),(5,5)),
+            ((0,0),(0,0),(5,0),(10,0)),
+            ((0,0),(0,0),(5,1),(10,0)),
+            ((-10,0),(0,0),(10,0),(10,10)),
+            ((15,10),(0,0),(10,0),(-5,10))]
+    '''
+    for curve in curves:
+        timing.start()
+        g = bezierlengthGravesen(curve,tol)
+        timing.finish()
+        gt = timing.micro()
+
+        timing.start()
+        s = bezierlengthSimpson(curve,tol)
+        timing.finish()
+        st = timing.micro()
+
+        print g, gt
+        print s, st
+    '''
+    for curve in curves:
+        print(beziertatlength(curve,0.5))
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/inkscape/cspsubdiv.py b/renderer/support/pogojig/inkscape/cspsubdiv.py
new file mode 100644
index 0000000..72da473
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/cspsubdiv.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+from .bezmisc import *
+from .ffgeom import *
+
+def maxdist(points):
+    ((p0x,p0y),(p1x,p1y),(p2x,p2y),(p3x,p3y)) = points
+    p0 = Point(p0x,p0y)
+    p1 = Point(p1x,p1y)
+    p2 = Point(p2x,p2y)
+    p3 = Point(p3x,p3y)
+
+    s1 = Segment(p0,p3)
+    return max(s1.distanceToPoint(p1),s1.distanceToPoint(p2))
+    
+
+def cspsubdiv(csp,flat):
+    for sp in csp:
+        subdiv(sp,flat)
+
+def subdiv(sp,flat,i=1):
+    while i < len(sp):
+        p0 = sp[i-1][1]
+        p1 = sp[i-1][2]
+        p2 = sp[i][0]
+        p3 = sp[i][1]
+        
+        b = (p0,p1,p2,p3)
+        m = maxdist(b)
+        if m <= flat:
+            i += 1
+        else:
+            one, two = beziersplitatt(b,0.5)
+            sp[i-1][2] = one[1]
+            sp[i][0] = two[2]
+            p = [one[2],one[3],two[1]]
+            sp[i:1] = [p]
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/inkscape/cubicsuperpath.py b/renderer/support/pogojig/inkscape/cubicsuperpath.py
new file mode 100644
index 0000000..a594660
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/cubicsuperpath.py
@@ -0,0 +1,174 @@
+#!/usr/bin/env python
+"""
+cubicsuperpath.py
+
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+"""
+from . import simplepath 
+from math import *
+
+def matprod(mlist):
+    prod=mlist[0]
+    for m in mlist[1:]:
+        a00=prod[0][0]*m[0][0]+prod[0][1]*m[1][0]
+        a01=prod[0][0]*m[0][1]+prod[0][1]*m[1][1]
+        a10=prod[1][0]*m[0][0]+prod[1][1]*m[1][0]
+        a11=prod[1][0]*m[0][1]+prod[1][1]*m[1][1]
+        prod=[[a00,a01],[a10,a11]]
+    return prod
+def rotmat(teta):
+    return [[cos(teta),-sin(teta)],[sin(teta),cos(teta)]]
+def applymat(mat, pt):
+    x=mat[0][0]*pt[0]+mat[0][1]*pt[1]
+    y=mat[1][0]*pt[0]+mat[1][1]*pt[1]
+    pt[0]=x
+    pt[1]=y
+def norm(pt):
+    return sqrt(pt[0]*pt[0]+pt[1]*pt[1])
+
+def ArcToPath(p1,params):
+    A=p1[:]
+    rx,ry,teta,longflag,sweepflag,x2,y2=params[:]
+    teta = teta*pi/180.0
+    B=[x2,y2]
+    if rx==0 or ry==0 or A==B:
+        return([[A[:],A[:],A[:]],[B[:],B[:],B[:]]])
+    mat=matprod((rotmat(teta),[[1/rx,0],[0,1/ry]],rotmat(-teta)))
+    applymat(mat, A)
+    applymat(mat, B)
+    k=[-(B[1]-A[1]),B[0]-A[0]]
+    d=k[0]*k[0]+k[1]*k[1]
+    k[0]/=sqrt(d)
+    k[1]/=sqrt(d)
+    d=sqrt(max(0,1-d/4))
+    if longflag==sweepflag:
+        d*=-1
+    O=[(B[0]+A[0])/2+d*k[0],(B[1]+A[1])/2+d*k[1]]
+    OA=[A[0]-O[0],A[1]-O[1]]
+    OB=[B[0]-O[0],B[1]-O[1]]
+    start=acos(OA[0]/norm(OA))
+    if OA[1]<0:
+        start*=-1
+    end=acos(OB[0]/norm(OB))
+    if OB[1]<0:
+        end*=-1
+
+    if sweepflag and start>end:
+        end +=2*pi
+    if (not sweepflag) and start<end:
+        end -=2*pi
+
+    NbSectors=int(abs(start-end)*2/pi)+1
+    dTeta=(end-start)/NbSectors
+    #v=dTeta*2/pi*0.552
+    #v=dTeta*2/pi*4*(sqrt(2)-1)/3
+    v = 4*tan(dTeta/4)/3
+    #if not sweepflag:
+    #    v*=-1
+    p=[]
+    for i in range(0,NbSectors+1,1):
+        angle=start+i*dTeta
+        v1=[O[0]+cos(angle)-(-v)*sin(angle),O[1]+sin(angle)+(-v)*cos(angle)]
+        pt=[O[0]+cos(angle)                ,O[1]+sin(angle)                ]
+        v2=[O[0]+cos(angle)-  v *sin(angle),O[1]+sin(angle)+  v *cos(angle)]
+        p.append([v1,pt,v2])
+
+    mat=matprod((rotmat(teta),[[rx,0],[0,ry]],rotmat(-teta)))
+    for pts in p:
+        applymat(mat, pts[0])
+        applymat(mat, pts[1])
+        applymat(mat, pts[2])
+    
+    # Use exact coordinates for the endpoints. This prevents small drifts when relative coordinates are used and guarantees that a path ending with a z command closes perfectly.
+    p[0][0] = p1[:]
+    p[0][1] = p1[:]
+    p[-1][1] = [x2, y2]
+    p[-1][2] = [x2, y2]
+    
+    return p
+    
+def CubicSuperPath(simplepath):
+    csp = []
+    subpath = -1
+    subpathstart = []
+    last = []
+    lastctrl = []
+    for s in simplepath:
+        cmd, params = s        
+        if cmd == 'M':
+            if last:
+                csp[subpath].append([lastctrl[:],last[:],last[:]])
+            subpath += 1
+            csp.append([])
+            subpathstart =  params[:]
+            last = params[:]
+            lastctrl = params[:]
+        elif cmd == 'L':
+            csp[subpath].append([lastctrl[:],last[:],last[:]])
+            last = params[:]
+            lastctrl = params[:]
+        elif cmd == 'C':
+            csp[subpath].append([lastctrl[:],last[:],params[:2]])
+            last = params[-2:]
+            lastctrl = params[2:4]
+        elif cmd == 'Q':
+            q0=last[:]
+            q1=params[0:2]
+            q2=params[2:4]
+            x0=     q0[0]
+            x1=1./3*q0[0]+2./3*q1[0]
+            x2=           2./3*q1[0]+1./3*q2[0]
+            x3=                           q2[0]
+            y0=     q0[1]
+            y1=1./3*q0[1]+2./3*q1[1]
+            y2=           2./3*q1[1]+1./3*q2[1]
+            y3=                           q2[1]
+            csp[subpath].append([lastctrl[:],[x0,y0],[x1,y1]])
+            last = [x3,y3]
+            lastctrl = [x2,y2]
+        elif cmd == 'A':
+            arcp=ArcToPath(last[:],params[:])
+            arcp[ 0][0]=lastctrl[:]
+            last=arcp[-1][1]
+            lastctrl = arcp[-1][0]
+            csp[subpath]+=arcp[:-1]
+        elif cmd == 'Z':
+            csp[subpath].append([lastctrl[:],last[:],last[:]])
+            last = subpathstart[:]
+            lastctrl = subpathstart[:]
+    #append final superpoint
+    csp[subpath].append([lastctrl[:],last[:],last[:]])
+    return csp    
+
+def unCubicSuperPath(csp):
+    a = []
+    for subpath in csp:
+        if subpath:
+            a.append(['M',subpath[0][1][:]])
+            for i in range(1,len(subpath)):
+                a.append(['C',subpath[i-1][2][:] + subpath[i][0][:] + subpath[i][1][:]])
+    return a
+
+def parsePath(d):
+    return CubicSuperPath(simplepath.parsePath(d))
+
+def formatPath(p):
+    return simplepath.formatPath(unCubicSuperPath(p))
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/inkscape/dxf_footer.txt b/renderer/support/pogojig/inkscape/dxf_footer.txt
new file mode 100644
index 0000000..a225dd7
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/dxf_footer.txt
@@ -0,0 +1,62 @@
+0
+ENDSEC
+0
+SECTION
+2
+OBJECTS
+0
+DICTIONARY
+5
+C
+330
+0
+100
+AcDbDictionary
+3
+ACAD_GROUP
+350
+D
+3
+ACAD_MLINESTYLE
+350
+17
+0
+DICTIONARY
+5
+D
+330
+C
+100
+AcDbDictionary
+0
+DICTIONARY
+5
+1A
+330
+C
+100
+AcDbDictionary
+0
+DICTIONARY
+5
+17
+330
+C
+100
+AcDbDictionary
+3
+STANDARD
+350
+18
+0
+DICTIONARY
+5
+19
+330
+C
+100
+AcDbDictionary
+0
+ENDSEC
+0
+EOF
diff --git a/renderer/support/pogojig/inkscape/dxf_header.txt b/renderer/support/pogojig/inkscape/dxf_header.txt
new file mode 100644
index 0000000..341cb1b
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/dxf_header.txt
@@ -0,0 +1,580 @@
+0
+SECTION
+2
+HEADER
+9
+$ACADVER
+1
+AC1014
+9
+$HANDSEED
+5
+FFFF
+0
+ENDSEC
+0
+SECTION
+2
+TABLES
+0
+TABLE
+2
+VPORT
+5
+8
+330
+0
+100
+AcDbSymbolTable
+70
+4
+0
+VPORT
+5
+2E
+330
+8
+100
+AcDbSymbolTableRecord
+100
+AcDbViewportTableRecord
+2
+*ACTIVE
+70
+0
+10
+0.0
+20
+0.0
+11
+1.0
+21
+1.0
+12
+4.25
+22
+5.5
+13
+0.0
+23
+0.0
+14
+10.0
+24
+10.0
+15
+10.0
+25
+10.0
+16
+0.0
+26
+0.0
+36
+1.0
+17
+0.0
+27
+0.0
+37
+0.0
+40
+11
+41
+1.24
+42
+50.0
+43
+0.0
+44
+0.0
+50
+0.0
+51
+0.0
+71
+0
+72
+100
+73
+1
+74
+3
+75
+0
+76
+0
+77
+0
+78
+0
+0
+ENDTAB
+0
+TABLE
+2
+LTYPE
+5
+5
+330
+0
+100
+AcDbSymbolTable
+70
+1
+0
+LTYPE
+5
+14
+330
+5
+100
+AcDbSymbolTableRecord
+100
+AcDbLinetypeTableRecord
+2
+BYBLOCK
+70
+0
+3
+
+72
+65
+73
+0
+40
+0.0
+0
+LTYPE
+5
+15
+330
+5
+100
+AcDbSymbolTableRecord
+100
+AcDbLinetypeTableRecord
+2
+BYLAYER
+70
+0
+3
+
+72
+65
+73
+0
+40
+0.0
+0
+LTYPE
+5
+16
+330
+5
+100
+AcDbSymbolTableRecord
+100
+AcDbLinetypeTableRecord
+2
+CONTINUOUS
+70
+0
+3
+Solid line
+72
+65
+73
+0
+40
+0.0
+0
+ENDTAB
+0
+TABLE
+2
+LAYER
+5
+2
+330
+0
+100
+AcDbSymbolTable
+70
+1
+0
+LAYER
+5
+10
+330
+2
+100
+AcDbSymbolTableRecord
+100
+AcDbLayerTableRecord
+2
+0
+70
+0
+62
+7
+6
+CONTINUOUS
+0
+ENDTAB
+0
+TABLE
+2
+STYLE
+5
+3
+330
+0
+100
+AcDbSymbolTable
+70
+1
+0
+STYLE
+5
+11
+330
+3
+100
+AcDbSymbolTableRecord
+100
+AcDbTextStyleTableRecord
+2
+STANDARD
+70
+0
+40
+0.0
+41
+1.0
+50
+0.0
+71
+0
+42
+2.5
+3
+txt
+4
+
+0
+ENDTAB
+0
+TABLE
+2
+VIEW
+5
+6
+330
+0
+100
+AcDbSymbolTable
+70
+0
+0
+ENDTAB
+0
+TABLE
+2
+UCS
+5
+7
+330
+0
+100
+AcDbSymbolTable
+70
+0
+0
+ENDTAB
+0
+TABLE
+2
+APPID
+5
+9
+330
+0
+100
+AcDbSymbolTable
+70
+2
+0
+APPID
+5
+12
+330
+9
+100
+AcDbSymbolTableRecord
+100
+AcDbRegAppTableRecord
+2
+ACAD
+70
+0
+0
+ENDTAB
+0
+TABLE
+2
+DIMSTYLE
+5
+A
+330
+0
+100
+AcDbSymbolTable
+70
+1
+0
+DIMSTYLE
+105
+27
+330
+A
+100
+AcDbSymbolTableRecord
+100
+AcDbDimStyleTableRecord
+2
+ISO-25
+70
+0
+3
+
+4
+
+5
+
+6
+
+7
+
+40
+1.0
+41
+2.5
+42
+0.625
+43
+3.75
+44
+1.25
+45
+0.0
+46
+0.0
+47
+0.0
+48
+0.0
+140
+2.5
+141
+2.5
+142
+0.0
+143
+0.03937007874016
+144
+1.0
+145
+0.0
+146
+1.0
+147
+0.625
+71
+0
+72
+0
+73
+0
+74
+0
+75
+0
+76
+0
+77
+1
+78
+8
+170
+0
+171
+3
+172
+1
+173
+0
+174
+0
+175
+0
+176
+0
+177
+0
+178
+0
+270
+2
+271
+2
+272
+2
+273
+2
+274
+3
+340
+11
+275
+0
+280
+0
+281
+0
+282
+0
+283
+0
+284
+8
+285
+0
+286
+0
+287
+3
+288
+0
+0
+ENDTAB
+0
+TABLE
+2
+BLOCK_RECORD
+5
+1
+330
+0
+100
+AcDbSymbolTable
+70
+1
+0
+BLOCK_RECORD
+5
+1F
+330
+1
+100
+AcDbSymbolTableRecord
+100
+AcDbBlockTableRecord
+2
+*MODEL_SPACE
+0
+BLOCK_RECORD
+5
+1B
+330
+1
+100
+AcDbSymbolTableRecord
+100
+AcDbBlockTableRecord
+2
+*PAPER_SPACE
+0
+ENDTAB
+0
+ENDSEC
+0
+SECTION
+2
+BLOCKS
+0
+BLOCK
+5
+20
+330
+1F
+100
+AcDbEntity
+8
+0
+100
+AcDbBlockBegin
+2
+*MODEL_SPACE
+70
+0
+10
+0.0
+20
+0.0
+30
+0.0
+3
+*MODEL_SPACE
+1
+
+0
+ENDBLK
+5
+21
+330
+1F
+100
+AcDbEntity
+8
+0
+100
+AcDbBlockEnd
+0
+BLOCK
+5
+1C
+330
+1B
+100
+AcDbEntity
+67
+1
+8
+0
+100
+AcDbBlockBegin
+2
+*PAPER_SPACE
+1
+
+0
+ENDBLK
+5
+1D
+330
+1B
+100
+AcDbEntity
+67
+1
+8
+0
+100
+AcDbBlockEnd
+0
+ENDSEC
+0
+SECTION
+2
+ENTITIES
diff --git a/renderer/support/pogojig/inkscape/effect.py b/renderer/support/pogojig/inkscape/effect.py
new file mode 100644
index 0000000..89824e9
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/effect.py
@@ -0,0 +1,279 @@
+"""
+Based on code from Aaron Spike. See
+http://www.bobcookdev.com/inkscape/inkscape-dxf.html
+"""
+
+import collections
+import itertools
+import os
+import pkgutil
+import re
+from lxml import etree
+
+from . import inkex, simpletransform, cubicsuperpath, cspsubdiv, inkscape
+
+
+def _get_unit_factors_map():
+    # Fluctuates somewhat between Inkscape releases _and_ between SVG version.
+    pixels_per_inch = 96.
+    pixels_per_mm = pixels_per_inch / 25.4
+    
+    return {
+        'px': 1.0,
+        'mm': pixels_per_mm,
+        'cm': pixels_per_mm * 10,
+        'm': pixels_per_mm * 1e3,
+        'km': pixels_per_mm * 1e6,
+        'pt': pixels_per_inch / 72,
+        'pc': pixels_per_inch / 6,
+        'in': pixels_per_inch,
+        'ft': pixels_per_inch * 12,
+        'yd': pixels_per_inch * 36}
+
+
+class ExportEffect(inkex.Effect):
+    _unit_factors = _get_unit_factors_map()
+    _asymptote_all_paths_name = 'all'
+    
+    def __init__(self):
+        inkex.Effect.__init__(self)
+        
+        self._flatness = float(os.environ.get('INKSCAPE_DXF_FLATNESS', 0.1))
+        
+        self._layers = None
+        self._paths = None
+    
+    def _get_document_scale(self):
+        """
+        Return scaling factor applied to the document because of a viewBox
+        setting. This currently ignores any setting of a preserveAspectRatio
+        attribute (like Inkscape).
+        """
+        document_height = self._get_height()
+        view_box = self._get_view_box()
+        
+        if view_box is None or document_height is None:
+            return 1
+        else:
+            _, _, _, view_box_height = view_box
+            
+            return document_height / view_box_height
+    
+    def _get_document_height(self):
+        """
+        Get the height of the document in pixels in the document coordinate
+        system as it is interpreted by Inkscape.
+        """
+        view_box = self._get_view_box()
+        document_height = self._get_height()
+        
+        if view_box is not None:
+            _, _, _, view_box_height = view_box
+            
+            return view_box_height
+        elif document_height is not None:
+            return document_height
+        else:
+            return 0
+    
+    def _get_height(self):
+        height_attr = self.document.getroot().get('height')
+        
+        if height_attr is None:
+            return None
+        else:
+            return self._measure_to_pixels(height_attr)
+    
+    def _get_view_box(self):
+        view_box_attr = self.document.getroot().get('viewBox')
+        
+        if view_box_attr is None:
+            return None
+        else:
+            return [float(i) for i in view_box_attr.split()]
+    
+    def _get_shape_paths(self, node, transform):
+        shape = cubicsuperpath.parsePath(node.get('d'))
+        
+        transform = simpletransform.composeTransform(
+            transform,
+            simpletransform.composeParents(node, [[1, 0, 0], [0, 1, 0]]))
+        
+        simpletransform.applyTransformToPath(transform, shape)
+        
+        def iter_paths():
+            for path in shape:
+                cspsubdiv.subdiv(path, self._flatness)
+
+                # path contains two control point coordinates and the actual
+                # coordinates per point.
+                yield [i for _, i, _ in path]
+        
+        return list(iter_paths())
+    
+    def effect(self):
+        document_height = self._get_document_height()
+        document_scale = self._get_document_scale()
+        
+        transform = simpletransform.composeTransform(
+            [[document_scale, 0, 0], [0, document_scale, 0]],
+            [[1, 0, 0], [0, -1, document_height]])
+        
+        layers = inkscape.get_inkscape_layers(self.svg_file)
+        layers_by_inkscape_name = {i.inkscape_name: i for i in layers}
+        
+        def iter_paths():
+            for node in self.document.getroot().xpath('//svg:path', namespaces=inkex.NSS):
+                layer = layers_by_inkscape_name.get(self._get_inkscape_layer_name(node))
+                
+                for path in self._get_shape_paths(node, transform):
+                    yield layer, path
+        
+        self._layers = layers
+        self._paths = list(iter_paths())
+    
+    def write_dxf(self, file):
+        # Scales pixels to millimeters. This is the predominant unit in CAD.
+        unit_factor = self._unit_factors['mm']
+        
+        layer_indices = {l: i for i, l in enumerate(self._layers)}
+        
+        file.write(pkgutil.get_data(__name__, 'dxf_header.txt').decode('ASCII'))
+        
+        def write_instruction(code, value):
+            print(code, file=file)
+            print(value, file=file)
+        
+        handle_iter = itertools.count(256)
+        
+        for layer, path in self._paths:
+            for (x1, y1), (x2, y2) in zip(path, path[1:]):
+                write_instruction(0, 'LINE')
+                
+                if layer is not None:
+                    write_instruction(8, layer.export_name)
+                    write_instruction(62, layer_indices.get(layer, 0))
+                
+                write_instruction(5, '{:x}'.format(next(handle_iter)))
+                write_instruction(100, 'AcDbEntity')
+                write_instruction(100, 'AcDbLine')
+                write_instruction(10, repr(x1 / unit_factor))
+                write_instruction(20, repr(y1 / unit_factor))
+                write_instruction(30, 0.0)
+                write_instruction(11, repr(x2 / unit_factor))
+                write_instruction(21, repr(y2 / unit_factor))
+                write_instruction(31, 0.0)
+        
+        file.write(pkgutil.get_data(__name__, 'dxf_footer.txt').decode('ASCII'))
+    
+    def write_asy(self, file):
+        def write_line(format, *args):
+            print >> file, format.format(*args) + ';'
+
+        # Scales pixels to points. Asymptote uses PostScript points (1 / 72
+        # inch) by default.
+        unit_factor = self._unit_factors['pt']
+        
+        paths_by_layer = collections.defaultdict(list)
+        variable_names = []
+        
+        for layer, path in self._paths:
+            paths_by_layer[layer].append(path)
+        
+        for layer in self._layers + [None]:
+            paths = paths_by_layer[layer]
+            variable_name = self._asymptote_identifier_from_layer(layer)
+            write_line('path[] {}', variable_name)
+            
+            variable_names.append(variable_name)
+            
+            for path in paths:
+                point_strs = ['({}, {})'.format(x / unit_factor, y / unit_factor) for x, y in path]
+
+                # Hack. We should determine this from whether Z or z was used
+                #  to close the path in the SVG document.
+                if path[0] == path[-1]:
+                    point_strs[-1] = 'cycle'
+                
+                write_line('{}.push({})', variable_name, ' -- '.join(point_strs))
+        
+        if self._asymptote_all_paths_name not in variable_names:
+            write_line('path[] {}', self._asymptote_all_paths_name)
+            
+            for i in variable_names:
+                write_line('{}.append({})', self._asymptote_all_paths_name, i)
+    
+    @classmethod
+    def _parse_measure(cls, string):
+        value_match = re.match(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)', string)
+        unit_match = re.search('(%s)$' % '|'.join(cls._unit_factors.keys()), string)    
+        
+        value = float(string[value_match.start():value_match.end()])
+        
+        if unit_match:
+            unit = string[unit_match.start():unit_match.end()]
+        else:
+            unit = None
+        
+        return value, unit
+    
+    @classmethod
+    def _measure_to_pixels(cls, string):
+        """
+        Parse a string containing a measure and return it's value converted
+        to pixels.
+        """
+        value, unit = cls._parse_measure(string)
+        
+        return value * cls._get_unit_factor(unit)
+    
+    @classmethod
+    def _get_inkscape_layer_name(cls, node):
+        while node is not None:
+            layer = node.get(inkex.addNS('label', 'inkscape'))
+            
+            if layer is not None:
+                return layer
+            
+            node = node.getparent()
+        
+        return None
+    
+    @classmethod
+    def _get_unit_factor(cls, unit):
+        if unit is None:
+            return 1
+        else:
+            return cls._unit_factors[unit]
+    
+    @classmethod
+    def _asymptote_identifier_from_layer(cls, layer):
+        if layer is None:
+            return '_'
+        else:
+            return re.sub('[^a-zA-Z0-9]', '_', layer.export_name)
+    
+    @classmethod
+    def check_document_units(cls, path):
+        with open(path, 'r') as file:
+            p = etree.XMLParser(huge_tree = True)
+            document = etree.parse(file, parser = p)
+        
+        height_attr = document.getroot().get('height')
+        
+        if height_attr is None:
+            raise ValueError(
+                'SVG document has no height attribute. See '
+                'https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')
+        
+        _, height_unit = cls._parse_measure(height_attr)
+        
+        if height_unit is None or height_unit == 'px':
+            raise ValueError(
+                'Height of SVG document is not an absolute measure. See '
+                'https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')
+        
+        if document.getroot().get('viewBox') is None:
+            raise ValueError(
+                'SVG document has no viewBox attribute. See '
+                'https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')
diff --git a/renderer/support/pogojig/inkscape/ffgeom.py b/renderer/support/pogojig/inkscape/ffgeom.py
new file mode 100644
index 0000000..368a29a
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/ffgeom.py
@@ -0,0 +1,137 @@
+#!/usr/bin/env python
+"""
+    ffgeom.py
+    Copyright (C) 2005 Aaron Cyril Spike, aaron@ekips.org
+
+    This file is part of FretFind 2-D.
+
+    FretFind 2-D is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    FretFind 2-D is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FretFind 2-D; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+"""
+import math
+
+class Point:
+    precision = 5
+    def __init__(self, x, y):
+        self.__coordinates = {'x' : float(x), 'y' : float(y)}
+    def __getitem__(self, key):
+        return self.__coordinates[key]
+    def __setitem__(self, key, value):
+        self.__coordinates[key] = float(value)
+    def __repr__(self):
+        return '(%s, %s)' % (round(self['x'],self.precision),round(self['y'],self.precision))
+    def copy(self):
+        return Point(self['x'],self['y'])
+    def translate(self, x, y):
+        self['x'] += x
+        self['y'] += y
+    def move(self, x, y):
+        self['x'] = float(x)
+        self['y'] = float(y)
+
+class Segment:
+    def __init__(self, e0, e1):
+        self.__endpoints = [e0, e1]
+    def __getitem__(self, key):
+        return self.__endpoints[key]
+    def __setitem__(self, key, value):
+        self.__endpoints[key] = value
+    def __repr__(self):
+        return repr(self.__endpoints)
+    def copy(self):
+        return Segment(self[0],self[1])
+    def translate(self, x, y):
+        self[0].translate(x,y)
+        self[1].translate(x,y)
+    def move(self,e0,e1):
+        self[0] = e0
+        self[1] = e1
+    def delta_x(self):
+        return self[1]['x'] - self[0]['x']
+    def delta_y(self):
+        return self[1]['y'] - self[0]['y']
+    #alias functions
+    run = delta_x
+    rise = delta_y
+    def slope(self):
+        if self.delta_x() != 0:
+            return self.delta_x() / self.delta_y()
+        return math.nan
+    def intercept(self):
+        if self.delta_x() != 0:
+            return self[1]['y'] - (self[0]['x'] * self.slope())
+        return math.nan
+    def distanceToPoint(self, p):
+        s2 = Segment(self[0],p)
+        c1 = dot(s2,self)
+        if c1 <= 0:
+            return Segment(p,self[0]).length()
+        c2 = dot(self,self)
+        if c2 <= c1:
+            return Segment(p,self[1]).length()
+        return self.perpDistanceToPoint(p)
+    def perpDistanceToPoint(self, p):
+        len = self.length()
+        if len == 0:
+            return math.nan
+        return math.fabs(((self[1]['x'] - self[0]['x']) * (self[0]['y'] - p['y'])) - \
+            ((self[0]['x'] - p['x']) * (self[1]['y'] - self[0]['y']))) / len
+    def angle(self):
+        return math.pi * (math.atan2(self.delta_y(), self.delta_x())) / 180
+    def length(self):
+        return math.sqrt((self.delta_x() ** 2) + (self.delta_y() ** 2))
+    def pointAtLength(self, len):
+        if self.length() == 0: return Point(math.nan, math.nan)
+        ratio = len / self.length()
+        x = self[0]['x'] + (ratio * self.delta_x())
+        y = self[0]['y'] + (ratio * self.delta_y())
+        return Point(x, y)
+    def pointAtRatio(self, ratio):
+        if self.length() == 0: return Point(math.nan, math.nan)
+        x = self[0]['x'] + (ratio * self.delta_x())
+        y = self[0]['y'] + (ratio * self.delta_y())
+        return Point(x, y)
+    def createParallel(self, p):
+        return Segment(Point(p['x'] + self.delta_x(), p['y'] + self.delta_y()), p)
+    def intersect(self, s):
+        return intersectSegments(self, s)
+
+def intersectSegments(s1, s2):
+    x1 = s1[0]['x']
+    x2 = s1[1]['x']
+    x3 = s2[0]['x']
+    x4 = s2[1]['x']
+    
+    y1 = s1[0]['y']
+    y2 = s1[1]['y']
+    y3 = s2[0]['y']
+    y4 = s2[1]['y']
+    
+    denom = ((y4 - y3) * (x2 - x1)) - ((x4 - x3) * (y2 - y1))
+    num1 = ((x4 - x3) * (y1 - y3)) - ((y4 - y3) * (x1 - x3))
+    num2 = ((x2 - x1) * (y1 - y3)) - ((y2 - y1) * (x1 - x3))
+
+    num = num1
+
+    if denom != 0: 
+        x = x1 + ((num / denom) * (x2 - x1))
+        y = y1 + ((num / denom) * (y2 - y1))
+        return Point(x, y)
+    return Point(math.nan, math.nan)
+
+def dot(s1, s2):
+    return s1.delta_x() * s2.delta_x() + s1.delta_y() * s2.delta_y()
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/inkscape/inkex.py b/renderer/support/pogojig/inkscape/inkex.py
new file mode 100644
index 0000000..609ffeb
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/inkex.py
@@ -0,0 +1,363 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+inkex.py
+A helper module for creating Inkscape extensions
+
+Copyright (C) 2005,2010 Aaron Spike <aaron@ekips.org> and contributors
+
+Contributors:
+  Aurélio A. Heckert <aurium(a)gmail.com>
+  Bulia Byak <buliabyak@users.sf.net>
+  Nicolas Dufour, nicoduf@yahoo.fr
+  Peter J. R. Moulder <pjrm@users.sourceforge.net>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+"""
+import copy
+import gettext
+import optparse
+import os
+import random
+import re
+import sys
+from math import *
+
+from lxml import etree
+
+#a dictionary of all of the xmlns prefixes in a standard inkscape doc
+NSS = {
+u'sodipodi' :u'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd',
+u'cc'       :u'http://creativecommons.org/ns#',
+u'ccOLD'    :u'http://web.resource.org/cc/',
+u'svg'      :u'http://www.w3.org/2000/svg',
+u'dc'       :u'http://purl.org/dc/elements/1.1/',
+u'rdf'      :u'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+u'inkscape' :u'http://www.inkscape.org/namespaces/inkscape',
+u'xlink'    :u'http://www.w3.org/1999/xlink',
+u'xml'      :u'http://www.w3.org/XML/1998/namespace'
+}
+
+def localize():
+    domain = 'inkscape'
+    if sys.platform.startswith('win'):
+        import locale
+        current_locale, encoding = locale.getdefaultlocale()
+        os.environ['LANG'] = current_locale
+        try:
+            localdir = os.environ['INKSCAPE_LOCALEDIR'];
+            trans = gettext.translation(domain, localdir, [current_locale], fallback=True)
+        except KeyError:
+            trans = gettext.translation(domain, fallback=True)
+    elif sys.platform.startswith('darwin'):
+        try:
+            localdir = os.environ['INKSCAPE_LOCALEDIR'];
+            trans = gettext.translation(domain, localdir, fallback=True)
+        except KeyError:
+            try:
+                localdir = os.environ['PACKAGE_LOCALE_DIR'];
+                trans = gettext.translation(domain, localdir, fallback=True)
+            except KeyError:
+                trans = gettext.translation(domain, fallback=True)
+    else:
+        try:
+            localdir = os.environ['PACKAGE_LOCALE_DIR'];
+            trans = gettext.translation(domain, localdir, fallback=True)
+        except KeyError:
+            trans = gettext.translation(domain, fallback=True)
+    #sys.stderr.write(str(localdir) + "\n")
+    trans.install()
+
+def debug(what):
+    sys.stderr.write(str(what) + "\n")
+    return what
+
+def errormsg(msg):
+    """Intended for end-user-visible error messages.
+    
+       (Currently just writes to stderr with an appended newline, but could do
+       something better in future: e.g. could add markup to distinguish error
+       messages from status messages or debugging output.)
+      
+       Note that this should always be combined with translation:
+
+         import inkex
+         inkex.localize()
+         ...
+         inkex.errormsg(_("This extension requires two selected paths."))
+    """
+    if isinstance(msg, unicode):
+        sys.stderr.write(msg.encode("UTF-8") + "\n")
+    else:
+        sys.stderr.write((unicode(msg, "utf-8", errors='replace') + "\n").encode("UTF-8"))
+
+def are_near_relative(a, b, eps):
+    if (a-b <= a*eps) and (a-b >= -a*eps):
+        return True
+    else:
+        return False
+
+def check_inkbool(option, opt, value):
+    if str(value).capitalize() == 'True':
+        return True
+    elif str(value).capitalize() == 'False':
+        return False
+    else:
+        raise optparse.OptionValueError("option %s: invalid inkbool value: %s" % (opt, value))
+
+def addNS(tag, ns=None):
+    val = tag
+    if ns!=None and len(ns)>0 and ns in NSS and len(tag)>0 and tag[0]!='{':
+        val = "{%s}%s" % (NSS[ns], tag)
+    return val
+
+class InkOption(optparse.Option):
+    TYPES = optparse.Option.TYPES + ("inkbool",)
+    TYPE_CHECKER = copy.copy(optparse.Option.TYPE_CHECKER)
+    TYPE_CHECKER["inkbool"] = check_inkbool
+
+class Effect:
+    """A class for creating Inkscape SVG Effects"""
+
+    def __init__(self, *args, **kwargs):
+        self.document=None
+        self.original_document=None
+        self.ctx=None
+        self.selected={}
+        self.doc_ids={}
+        self.options=None
+        self.args=None
+        self.OptionParser = optparse.OptionParser(usage="usage: %prog [options] SVGfile",option_class=InkOption)
+        self.OptionParser.add_option("--id",
+                        action="append", type="string", dest="ids", default=[], 
+                        help="id attribute of object to manipulate")
+
+    def effect(self):
+        pass
+
+    def getoptions(self,args=sys.argv[1:]):
+        """Collect command line arguments"""
+        self.options, self.args = self.OptionParser.parse_args(args)
+
+    def parse(self, filename=None):
+        """Parse document in specified file or on stdin"""
+
+        # First try to open the file from the function argument
+        if filename != None:
+            try:
+                stream = open(filename, 'r')
+            except Exception:
+                errormsg(_("Unable to open specified file: %s") % filename)
+                sys.exit()
+
+        # If it wasn't specified, try to open the file specified as
+        # an object member
+        elif self.svg_file != None:
+            try:
+                stream = open(self.svg_file, 'r')
+            except Exception:
+                errormsg(_("Unable to open object member file: %s") % self.svg_file)
+                sys.exit()
+
+        # Finally, if the filename was not specified anywhere, use
+        # standard input stream
+        else:
+            stream = sys.stdin
+
+        p = etree.XMLParser(huge_tree=True)
+        self.document = etree.parse(stream, parser=p)
+        self.original_document = copy.deepcopy(self.document)
+        stream.close()
+
+    # defines view_center in terms of document units
+    def getposinlayer(self):
+        #defaults
+        self.current_layer = self.document.getroot()
+        self.view_center = (0.0,0.0)
+
+        layerattr = self.document.xpath('//sodipodi:namedview/@inkscape:current-layer', namespaces=NSS)
+        if layerattr:
+            layername = layerattr[0]
+            layer = self.document.xpath('//svg:g[@id="%s"]' % layername, namespaces=NSS)
+            if layer:
+                self.current_layer = layer[0]
+
+        xattr = self.document.xpath('//sodipodi:namedview/@inkscape:cx', namespaces=NSS)
+        yattr = self.document.xpath('//sodipodi:namedview/@inkscape:cy', namespaces=NSS)
+        if xattr and yattr:
+            x = self.unittouu( xattr[0] + 'px' )
+            y = self.unittouu( yattr[0] + 'px')
+            doc_height = self.unittouu(self.document.getroot().get('height'))
+            if x and y:
+                self.view_center = (float(x), doc_height - float(y)) # FIXME: y-coordinate flip, eliminate it when it's gone in Inkscape
+
+    def getselected(self):
+        """Collect selected nodes"""
+        for i in self.options.ids:
+            path = '//*[@id="%s"]' % i
+            for node in self.document.xpath(path, namespaces=NSS):
+                self.selected[i] = node
+
+    def getElementById(self, id):
+        path = '//*[@id="%s"]' % id
+        el_list = self.document.xpath(path, namespaces=NSS)
+        if el_list:
+          return el_list[0]
+        else:
+          return None
+
+    def getParentNode(self, node):
+        for parent in self.document.getiterator():
+            if node in parent.getchildren():
+                return parent
+                break
+
+
+    def getdocids(self):
+        docIdNodes = self.document.xpath('//@id', namespaces=NSS)
+        for m in docIdNodes:
+            self.doc_ids[m] = 1
+
+    def getNamedView(self):
+        return self.document.xpath('//sodipodi:namedview', namespaces=NSS)[0]
+
+    def createGuide(self, posX, posY, angle):
+        atts = {
+          'position': str(posX)+','+str(posY),
+          'orientation': str(sin(radians(angle)))+','+str(-cos(radians(angle)))
+          }
+        guide = etree.SubElement(
+                  self.getNamedView(),
+                  addNS('guide','sodipodi'), atts )
+        return guide
+
+    def output(self):
+        """Serialize document into XML on stdout"""
+        original = etree.tostring(self.original_document)        
+        result = etree.tostring(self.document)        
+        if original != result:
+            self.document.write(sys.stdout)
+
+    def affect(self, args=sys.argv[1:], output=True):
+        """Affect an SVG document with a callback effect"""
+        self.svg_file = args[-1]
+        self.getoptions(args)
+        self.parse()
+        self.getposinlayer()
+        self.getselected()
+        self.getdocids()
+        self.effect()
+        if output: self.output()
+
+    def uniqueId(self, old_id, make_new_id = True):
+        new_id = old_id
+        if make_new_id:
+            while new_id in self.doc_ids:
+                new_id += random.choice('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')
+            self.doc_ids[new_id] = 1
+        return new_id
+
+    def xpathSingle(self, path):
+        try:
+            retval = self.document.xpath(path, namespaces=NSS)[0]
+        except:
+            errormsg(_("No matching node for expression: %s") % path)
+            retval = None
+        return retval
+
+    #a dictionary of unit to user unit conversion factors
+    __uuconv = {'in':96.0, 'pt':1.33333333333, 'px':1.0, 'mm':3.77952755913, 'cm':37.7952755913,
+                'm':3779.52755913, 'km':3779527.55913, 'pc':16.0, 'yd':3456.0 , 'ft':1152.0}
+
+    # Function returns the unit used for the values in SVG.
+    # For lack of an attribute in SVG that explicitly defines what units are used for SVG coordinates,
+    # try to calculate the unit from the SVG width and SVG viewbox.
+    # Defaults to 'px' units.
+    def getDocumentUnit(self):
+        svgunit = 'px' #default to pixels
+
+        svgwidth = self.document.getroot().get('width')
+        viewboxstr = self.document.getroot().get('viewBox')
+        if viewboxstr:
+            unitmatch = re.compile('(%s)$' % '|'.join(self.__uuconv.keys()))
+            param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')
+
+            p = param.match(svgwidth)
+            u = unitmatch.search(svgwidth)    
+            
+            width = 100 #default
+            viewboxwidth = 100 #default
+            svgwidthunit = 'px' #default assume 'px' unit
+            if p:
+                width = float(p.string[p.start():p.end()])
+            else:
+                errormsg(_("SVG Width not set correctly! Assuming width = 100"))
+            if u:
+                svgwidthunit = u.string[u.start():u.end()]
+
+            viewboxnumbers = []
+            for t in viewboxstr.split():
+                try:
+                    viewboxnumbers.append(float(t))
+                except ValueError:
+                    pass
+            if len(viewboxnumbers) == 4:  #check for correct number of numbers
+                viewboxwidth = viewboxnumbers[2]
+
+            svgunitfactor = self.__uuconv[svgwidthunit] * width / viewboxwidth
+
+            # try to find the svgunitfactor in the list of units known. If we don't find something, ...
+            eps = 0.01 #allow 1% error in factor
+            for key in self.__uuconv:
+                if are_near_relative(self.__uuconv[key], svgunitfactor, eps):
+                    #found match!
+                    svgunit = key;
+
+        return svgunit
+
+
+    def unittouu(self, string):
+        '''Returns userunits given a string representation of units in another system'''
+        unit = re.compile('(%s)$' % '|'.join(self.__uuconv.keys()))
+        param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')
+
+        p = param.match(string)
+        u = unit.search(string)    
+        if p:
+            retval = float(p.string[p.start():p.end()])
+        else:
+            retval = 0.0
+        if u:
+            try:
+                return retval * (self.__uuconv[u.string[u.start():u.end()]] / self.__uuconv[self.getDocumentUnit()])
+            except KeyError:
+                pass
+        else: # default assume 'px' unit
+            return retval / self.__uuconv[self.getDocumentUnit()]
+
+        return retval
+
+    def uutounit(self, val, unit):
+        return val / (self.__uuconv[unit] / self.__uuconv[self.getDocumentUnit()])
+
+    def addDocumentUnit(self, value):
+        ''' Add document unit when no unit is specified in the string '''
+        try:
+            float(value)
+            return value + self.getDocumentUnit()
+        except ValueError:
+            return value
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/inkscape/inkscape.py b/renderer/support/pogojig/inkscape/inkscape.py
new file mode 100644
index 0000000..efe7677
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/inkscape.py
@@ -0,0 +1,124 @@
+import os
+import subprocess
+import xml.etree.ElementTree as etree
+
+def get_inkscape_layers(svg_path):
+    document = etree.parse(svg_path)
+    
+    layers = []
+    nodes = document.findall(
+        '{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]')
+    
+    for i in nodes:
+        inkscape_name = i.get('{http://www.inkscape.org/namespaces/inkscape}label').strip()
+        
+        if inkscape_name.endswith(']'):
+            export_name, args = inkscape_name[:-1].rsplit('[', 1)
+            
+            export_name = export_name.strip()
+            args = args.strip()
+            
+            use_paths = 'p' in args
+        else:
+            use_paths = False
+            export_name = inkscape_name
+        
+        layers.append(Layer(inkscape_name, export_name, use_paths))
+    return layers
+
+
+def _inkscape(svg_path, verbs):
+    subprocess.run([os.environ.get('INKSCAPE', 'inkscape'), *(x for verb in verbs for x in ('--verb', verb)), svg_path])
+
+
+class Layer(object):
+    def __init__(self, inkscape_name, export_name, use_paths):
+        self.inkscape_name = inkscape_name
+        self.export_name = export_name
+        self.use_paths = use_paths
+
+
+class InkscapeCommandLine(object):
+    def __init__(self, path):
+        self._path = path
+        self._layers = get_inkscape_layers(path)
+        self._current_layer_index = None
+        self._verbs = []
+    
+    def apply_to_document(self, *verb):
+        self._verbs.extend(verb)
+    
+    def apply_to_layer(self, layer, *verb):
+        self._go_to_layer(layer)
+        self.apply_to_document(*verb)
+    
+    def select_all_in_layer(self, layer):
+        self.apply_to_layer(layer, 'EditSelectAll')
+    
+    def apply_to_layer_content(self, layer, *verbs):
+        self.select_all_in_layer(layer)
+        self.apply_to_document(*verbs)
+    
+    def _go_to_layer(self, layer, with_selection=False):
+        if self._current_layer_index is None:
+            # Initialize to a known state. We cannot assume that any layer is
+            #  selected and thus we need as many LayerPrev as we have layers.
+            self._current_layer_index = len(self._layers)
+            self._go_to_layer(self._layers[0])
+        
+        target_index = self._layers.index(layer)
+        
+        if with_selection:
+            next_command = 'LayerMoveToNext'
+            previous_command = 'LayerMoveToPrev'
+        else:
+            next_command = 'LayerNext'
+            previous_command = 'LayerPrev'
+        
+        while self._current_layer_index != target_index:
+            if self._current_layer_index < target_index:
+                self.apply_to_document(next_command)
+                self._current_layer_index += 1
+            else:
+                self.apply_to_document(previous_command)
+                self._current_layer_index -= 1
+        
+        if with_selection:
+            # When using LayerMoveToNext and LayerMoveToPrev, inkscape does
+            # not reliably select the next/previous layer.
+            self._current_layer_index = None
+    
+    def duplicate_layer(self, layer):
+        self.apply_to_layer(layer, 'LayerDuplicate')
+
+        # Inkscape 0.91 places a duplicated layer above (after) the selected
+        # one and selects the new layer.
+        new_layer = Layer(layer.inkscape_name + ' copy', layer.export_name, layer.use_paths)
+        self._layers.insert(self._current_layer_index + 1, new_layer)
+        
+        # Whether the original or the new layer is selected after the operation
+        # fluctuates between Inkscape versions.
+        self._current_layer_index = None
+        
+        return new_layer
+    
+    def delete_layer(self, layer):
+        self.apply_to_layer(layer, 'LayerDelete')
+        
+        # Inkscape 0.91 selects the layer above (after) the deleted layer.
+        del self._layers[self._current_layer_index]
+    
+    def clear_layer(self, layer):
+        self.select_all_in_layer(layer)
+        self.apply_to_document('EditDelete')
+    
+    def move_content(self, source_layer, target_layer):
+        self.select_all_in_layer(source_layer)
+        self._go_to_layer(target_layer, True)
+    
+    def run(self):
+        _inkscape(self._path, self._verbs)
+    
+    @property
+    def layers(self):
+        return list(self._layers)
diff --git a/renderer/support/pogojig/inkscape/simplepath.py b/renderer/support/pogojig/inkscape/simplepath.py
new file mode 100644
index 0000000..8d4f0a7
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/simplepath.py
@@ -0,0 +1,213 @@
+#!/usr/bin/env python
+"""
+simplepath.py
+functions for digesting paths into a simple list structure
+
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+"""
+import re, math
+
+def lexPath(d):
+    """
+    returns and iterator that breaks path data 
+    identifies command and parameter tokens
+    """
+    offset = 0
+    length = len(d)
+    delim = re.compile(r'[ \t\r\n,]+')
+    command = re.compile(r'[MLHVCSQTAZmlhvcsqtaz]')
+    parameter = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')
+    while 1:
+        m = delim.match(d, offset)
+        if m:
+            offset = m.end()
+        if offset >= length:
+            break
+        m = command.match(d, offset)
+        if m:
+            yield [d[offset:m.end()], True]
+            offset = m.end()
+            continue
+        m = parameter.match(d, offset)
+        if m:
+            yield [d[offset:m.end()], False]
+            offset = m.end()
+            continue
+        #TODO: create new exception
+        raise ValueError('Invalid path data!')
+'''
+pathdefs = {commandfamily:
+    [
+    implicitnext,
+    #params,
+    [casts,cast,cast],
+    [coord type,x,y,0]
+    ]}
+'''
+pathdefs = {
+    'M':['L', 2, [float, float], ['x','y']], 
+    'L':['L', 2, [float, float], ['x','y']], 
+    'H':['H', 1, [float], ['x']], 
+    'V':['V', 1, [float], ['y']], 
+    'C':['C', 6, [float, float, float, float, float, float], ['x','y','x','y','x','y']], 
+    'S':['S', 4, [float, float, float, float], ['x','y','x','y']], 
+    'Q':['Q', 4, [float, float, float, float], ['x','y','x','y']], 
+    'T':['T', 2, [float, float], ['x','y']], 
+    'A':['A', 7, [float, float, float, int, int, float, float], ['r','r','a',0,'s','x','y']], 
+    'Z':['L', 0, [], []]
+    }
+
+def parsePath(d):
+    """
+    Parse SVG path and return an array of segments.
+    Removes all shorthand notation.
+    Converts coordinates to absolute.
+    """
+    retval = []
+    lexer = lexPath(d)
+
+    pen = (0.0,0.0)
+    subPathStart = pen
+    lastControl = pen
+    lastCommand = ''
+    
+    while 1:
+        try:
+            token, isCommand = next(lexer)
+        except StopIteration:
+            break
+        params = []
+        needParam = True
+        if isCommand:
+            if not lastCommand and token.upper() != 'M':
+                raise ValueError('Invalid path, must begin with moveto.')
+            else:                
+                command = token
+        else:
+            #command was omited
+            #use last command's implicit next command
+            needParam = False
+            if lastCommand:
+                if lastCommand.isupper():
+                    command = pathdefs[lastCommand][0]
+                else:
+                    command = pathdefs[lastCommand.upper()][0].lower()
+            else:
+                raise ValueError('Invalid path, no initial command.')
+        numParams = pathdefs[command.upper()][1]
+        while numParams > 0:
+            if needParam:
+                try: 
+                    token, isCommand = next(lexer)
+                    if isCommand:
+                        raise ValueError('Invalid number of parameters')
+                except StopIteration:
+                    raise ValueError('Unexpected end of path')
+            cast = pathdefs[command.upper()][2][-numParams]
+            param = cast(token)
+            if command.islower():
+                if pathdefs[command.upper()][3][-numParams]=='x':
+                    param += pen[0]
+                elif pathdefs[command.upper()][3][-numParams]=='y':
+                    param += pen[1]
+            params.append(param)
+            needParam = True
+            numParams -= 1
+        #segment is now absolute so
+        outputCommand = command.upper()
+    
+        #Flesh out shortcut notation    
+        if outputCommand in ('H','V'):
+            if outputCommand == 'H':
+                params.append(pen[1])
+            if outputCommand == 'V':
+                params.insert(0,pen[0])
+            outputCommand = 'L'
+        if outputCommand in ('S','T'):
+            params.insert(0,pen[1]+(pen[1]-lastControl[1]))
+            params.insert(0,pen[0]+(pen[0]-lastControl[0]))
+            if outputCommand == 'S':
+                outputCommand = 'C'
+            if outputCommand == 'T':
+                outputCommand = 'Q'
+
+        #current values become "last" values
+        if outputCommand == 'M':
+            subPathStart = tuple(params[0:2])
+            pen = subPathStart
+        if outputCommand == 'Z':
+            pen = subPathStart
+        else:
+            pen = tuple(params[-2:])
+
+        if outputCommand in ('Q','C'):
+            lastControl = tuple(params[-4:-2])
+        else:
+            lastControl = pen
+        lastCommand = command
+
+        retval.append([outputCommand,params])
+    return retval
+
+def formatPath(a):
+    """Format SVG path data from an array"""
+    return "".join([cmd + " ".join([str(p) for p in params]) for cmd, params in a])
+
+def translatePath(p, x, y):
+    for cmd,params in p:
+        defs = pathdefs[cmd]
+        for i in range(defs[1]):
+            if defs[3][i] == 'x':
+                params[i] += x
+            elif defs[3][i] == 'y':
+                params[i] += y
+
+def scalePath(p, x, y):
+    for cmd,params in p:
+        defs = pathdefs[cmd]
+        for i in range(defs[1]):
+            if defs[3][i] == 'x':
+                params[i] *= x
+            elif defs[3][i] == 'y':
+                params[i] *= y
+            elif defs[3][i] == 'r':         # radius parameter
+                params[i] *= x
+            elif defs[3][i] == 's':         # sweep-flag parameter
+                if x*y < 0:
+                    params[i] = 1 - params[i]
+            elif defs[3][i] == 'a':         # x-axis-rotation angle
+                if y < 0:
+                    params[i] = - params[i]
+
+def rotatePath(p, a, cx = 0, cy = 0):
+    if a == 0:
+        return p
+    for cmd,params in p:
+        defs = pathdefs[cmd]
+        for i in range(defs[1]):
+            if defs[3][i] == 'x':
+                x = params[i] - cx
+                y = params[i + 1] - cy
+                r = math.sqrt((x**2) + (y**2))
+                if r != 0:
+                    theta = math.atan2(y, x) + a
+                    params[i] = (r * math.cos(theta)) + cx
+                    params[i + 1] = (r * math.sin(theta)) + cy
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/inkscape/simpletransform.py b/renderer/support/pogojig/inkscape/simpletransform.py
new file mode 100644
index 0000000..610cb57
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/simpletransform.py
@@ -0,0 +1,242 @@
+'''
+Copyright (C) 2006 Jean-Francois Barraud, barraud@math.univ-lille1.fr
+Copyright (C) 2010 Alvin Penner, penner@vaxxine.com
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+barraud@math.univ-lille1.fr
+
+This code defines several functions to make handling of transform
+attribute easier.
+'''
+
+import math, re
+
+from . import inkex, cubicsuperpath
+
+def parseTransform(transf,mat=[[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]):
+    if transf=="" or transf==None:
+        return(mat)
+    stransf = transf.strip()
+    result=re.match("(translate|scale|rotate|skewX|skewY|matrix)\s*\(([^)]*)\)\s*,?",stransf)
+#-- translate --
+    if result.group(1)=="translate":
+        args=result.group(2).replace(',',' ').split()
+        dx=float(args[0])
+        if len(args)==1:
+            dy=0.0
+        else:
+            dy=float(args[1])
+        matrix=[[1,0,dx],[0,1,dy]]
+#-- scale --
+    if result.group(1)=="scale":
+        args=result.group(2).replace(',',' ').split()
+        sx=float(args[0])
+        if len(args)==1:
+            sy=sx
+        else:
+            sy=float(args[1])
+        matrix=[[sx,0,0],[0,sy,0]]
+#-- rotate --
+    if result.group(1)=="rotate":
+        args=result.group(2).replace(',',' ').split()
+        a=float(args[0])*math.pi/180
+        if len(args)==1:
+            cx,cy=(0.0,0.0)
+        else:
+            cx,cy=map(float,args[1:])
+        matrix=[[math.cos(a),-math.sin(a),cx],[math.sin(a),math.cos(a),cy]]
+        matrix=composeTransform(matrix,[[1,0,-cx],[0,1,-cy]])
+#-- skewX --
+    if result.group(1)=="skewX":
+        a=float(result.group(2))*math.pi/180
+        matrix=[[1,math.tan(a),0],[0,1,0]]
+#-- skewY --
+    if result.group(1)=="skewY":
+        a=float(result.group(2))*math.pi/180
+        matrix=[[1,0,0],[math.tan(a),1,0]]
+#-- matrix --
+    if result.group(1)=="matrix":
+        a11,a21,a12,a22,v1,v2=result.group(2).replace(',',' ').split()
+        matrix=[[float(a11),float(a12),float(v1)], [float(a21),float(a22),float(v2)]]
+
+    matrix=composeTransform(mat,matrix)
+    if result.end() < len(stransf):
+        return(parseTransform(stransf[result.end():], matrix))
+    else:
+        return matrix
+
+def formatTransform(mat):
+    return ("matrix(%f,%f,%f,%f,%f,%f)" % (mat[0][0], mat[1][0], mat[0][1], mat[1][1], mat[0][2], mat[1][2]))
+
+def composeTransform(M1,M2):
+    a11 = M1[0][0]*M2[0][0] + M1[0][1]*M2[1][0]
+    a12 = M1[0][0]*M2[0][1] + M1[0][1]*M2[1][1]
+    a21 = M1[1][0]*M2[0][0] + M1[1][1]*M2[1][0]
+    a22 = M1[1][0]*M2[0][1] + M1[1][1]*M2[1][1]
+
+    v1 = M1[0][0]*M2[0][2] + M1[0][1]*M2[1][2] + M1[0][2]
+    v2 = M1[1][0]*M2[0][2] + M1[1][1]*M2[1][2] + M1[1][2]
+    return [[a11,a12,v1],[a21,a22,v2]]
+
+def composeParents(node, mat):
+    trans = node.get('transform')
+    if trans:
+        mat = composeTransform(parseTransform(trans), mat)
+    if node.getparent().tag == inkex.addNS('g','svg'):
+        mat = composeParents(node.getparent(), mat)
+    return mat
+
+def applyTransformToNode(mat,node):
+    m=parseTransform(node.get("transform"))
+    newtransf=formatTransform(composeTransform(mat,m))
+    node.set("transform", newtransf)
+
+def applyTransformToPoint(mat,pt):
+    x = mat[0][0]*pt[0] + mat[0][1]*pt[1] + mat[0][2]
+    y = mat[1][0]*pt[0] + mat[1][1]*pt[1] + mat[1][2]
+    pt[0]=x
+    pt[1]=y
+
+def applyTransformToPath(mat,path):
+    for comp in path:
+        for ctl in comp:
+            for pt in ctl:
+                applyTransformToPoint(mat,pt)
+
+def fuseTransform(node):
+    if node.get('d')==None:
+        #FIXME: how do you raise errors?
+        raise AssertionError('can not fuse "transform" of elements that have no "d" attribute')
+    t = node.get("transform")
+    if t == None:
+        return
+    m = parseTransform(t)
+    d = node.get('d')
+    p = cubicsuperpath.parsePath(d)
+    applyTransformToPath(m,p)
+    node.set('d', cubicsuperpath.formatPath(p))
+    del node.attrib["transform"]
+
+####################################################################
+##-- Some functions to compute a rough bbox of a given list of objects.
+##-- this should be shipped out in an separate file...
+
+def boxunion(b1,b2):
+    if b1 is None:
+        return b2
+    elif b2 is None:
+        return b1    
+    else:
+        return((min(b1[0],b2[0]), max(b1[1],b2[1]), min(b1[2],b2[2]), max(b1[3],b2[3])))
+
+def roughBBox(path):
+    xmin,xMax,ymin,yMax = path[0][0][0][0],path[0][0][0][0],path[0][0][0][1],path[0][0][0][1]
+    for pathcomp in path:
+        for ctl in pathcomp:
+            for pt in ctl:
+                xmin = min(xmin,pt[0])
+                xMax = max(xMax,pt[0])
+                ymin = min(ymin,pt[1])
+                yMax = max(yMax,pt[1])
+    return xmin,xMax,ymin,yMax
+
+def refinedBBox(path):
+    xmin,xMax,ymin,yMax = path[0][0][1][0],path[0][0][1][0],path[0][0][1][1],path[0][0][1][1]
+    for pathcomp in path:
+        for i in range(1, len(pathcomp)):
+            cmin, cmax = cubicExtrema(pathcomp[i-1][1][0], pathcomp[i-1][2][0], pathcomp[i][0][0], pathcomp[i][1][0])
+            xmin = min(xmin, cmin)
+            xMax = max(xMax, cmax)
+            cmin, cmax = cubicExtrema(pathcomp[i-1][1][1], pathcomp[i-1][2][1], pathcomp[i][0][1], pathcomp[i][1][1])
+            ymin = min(ymin, cmin)
+            yMax = max(yMax, cmax)
+    return xmin,xMax,ymin,yMax
+
+def cubicExtrema(y0, y1, y2, y3):
+    cmin = min(y0, y3)
+    cmax = max(y0, y3)
+    d1 = y1 - y0
+    d2 = y2 - y1
+    d3 = y3 - y2
+    if (d1 - 2*d2 + d3):
+        if (d2*d2 > d1*d3):
+            t = (d1 - d2 + math.sqrt(d2*d2 - d1*d3))/(d1 - 2*d2 + d3)
+            if (t > 0) and (t < 1):
+                y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t
+                cmin = min(cmin, y)
+                cmax = max(cmax, y)
+            t = (d1 - d2 - math.sqrt(d2*d2 - d1*d3))/(d1 - 2*d2 + d3)
+            if (t > 0) and (t < 1):
+                y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t
+                cmin = min(cmin, y)
+                cmax = max(cmax, y)
+    elif (d3 - d1):
+        t = -d1/(d3 - d1)
+        if (t > 0) and (t < 1):
+            y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t
+            cmin = min(cmin, y)
+            cmax = max(cmax, y)
+    return cmin, cmax
+
+def computeBBox(aList,mat=[[1,0,0],[0,1,0]]):
+    bbox=None
+    for node in aList:
+        m = parseTransform(node.get('transform'))
+        m = composeTransform(mat,m)
+        #TODO: text not supported!
+        d = None
+        if node.get("d"):
+            d = node.get('d')
+        elif node.get('points'):
+            d = 'M' + node.get('points')
+        elif node.tag in [ inkex.addNS('rect','svg'), 'rect', inkex.addNS('image','svg'), 'image' ]:
+            d = 'M' + node.get('x', '0') + ',' + node.get('y', '0') + \
+                'h' + node.get('width') + 'v' + node.get('height') + \
+                'h-' + node.get('width')
+        elif node.tag in [ inkex.addNS('line','svg'), 'line' ]:
+            d = 'M' + node.get('x1') + ',' + node.get('y1') + \
+                ' ' + node.get('x2') + ',' + node.get('y2')
+        elif node.tag in [ inkex.addNS('circle','svg'), 'circle', \
+                            inkex.addNS('ellipse','svg'), 'ellipse' ]:
+            rx = node.get('r')
+            if rx is not None:
+                ry = rx
+            else:
+                rx = node.get('rx')
+                ry = node.get('ry')
+            cx = float(node.get('cx', '0'))
+            cy = float(node.get('cy', '0'))
+            x1 = cx - float(rx)
+            x2 = cx + float(rx)
+            d = 'M %f %f ' % (x1, cy) + \
+                'A' + rx + ',' + ry + ' 0 1 0 %f,%f' % (x2, cy) + \
+                'A' + rx + ',' + ry + ' 0 1 0 %f,%f' % (x1, cy)
+ 
+        if d is not None:
+            p = cubicsuperpath.parsePath(d)
+            applyTransformToPath(m,p)
+            bbox=boxunion(refinedBBox(p),bbox)
+
+        elif node.tag == inkex.addNS('use','svg') or node.tag=='use':
+            refid=node.get(inkex.addNS('href','xlink'))
+            path = '//*[@id="%s"]' % refid[1:]
+            refnode = node.xpath(path)
+            bbox=boxunion(computeBBox(refnode,m),bbox)
+            
+        bbox=boxunion(computeBBox(node,m),bbox)
+    return bbox
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/renderer/support/pogojig/kicad/__init__.py b/renderer/support/pogojig/kicad/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/renderer/support/pogojig/kicad/__init__.py
diff --git a/renderer/support/pogojig/kicad/kicad-cache.lib b/renderer/support/pogojig/kicad/kicad-cache.lib
new file mode 100644
index 0000000..a98cd73
--- /dev/null
+++ b/renderer/support/pogojig/kicad/kicad-cache.lib
@@ -0,0 +1,21 @@
+EESchema-LIBRARY Version 2.4
+#encoding utf-8
+#
+# Connector_Conn_01x01_Female
+#
+DEF Connector_Conn_01x01_Female J 0 40 Y N 1 F N
+F0 "J" 0 100 50 H V C CNN
+F1 "Connector_Conn_01x01_Female" 0 -100 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ Connector*:*
+$ENDFPLIST
+DRAW
+A 0 0 20 901 -901 1 1 6 N 0 20 0 -20
+P 2 1 1 6 -50 0 -20 0 N
+X Pin_1 1 -200 0 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/renderer/support/pogojig/kicad/kicad.pro b/renderer/support/pogojig/kicad/kicad.pro
new file mode 100644
index 0000000..5cd0983
--- /dev/null
+++ b/renderer/support/pogojig/kicad/kicad.pro
@@ -0,0 +1,34 @@
+update=05/04/2019 20:44:53
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+CopperEdgeClearance=0.000000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]