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-rw-r--r--README.md141
-rw-r--r--examples/inputs/fill.dxf2602
-rwxr-xr-xexamples/panelize.py7
-rw-r--r--gerberex/dxf.py282
-rw-r--r--gerberex/dxf_path.py125
-rw-r--r--gerberex/utility.py9
-rw-r--r--setup.py2
-rw-r--r--tests/data/ref_dxf_metric.dxf304
-rw-r--r--tests/data/ref_dxf_mousebites.dxf344
-rw-r--r--tests/expects/dxf_offset.gtl82
-rw-r--r--tests/expects/dxf_rotate.gtl82
-rw-r--r--tests/expects/dxf_save_fill.gtl71
-rw-r--r--tests/expects/dxf_save_fill_simple.gtl78
-rw-r--r--tests/expects/dxf_save_line.gtl84
-rw-r--r--tests/expects/dxf_save_line.txt84
-rw-r--r--tests/expects/dxf_save_mousebites.gtl592
-rw-r--r--tests/expects/dxf_save_mousebites.txt592
-rw-r--r--tests/expects/dxf_to_inch.gtl82
-rw-r--r--tests/test_dxf.py30
19 files changed, 2428 insertions, 3165 deletions
diff --git a/README.md b/README.md
index 2831672..252de53 100644
--- a/README.md
+++ b/README.md
@@ -68,96 +68,121 @@ ctx.dump('panelized-board.txt')
```
## DXF file translation
+pcb-tools-extension hsa a function to load a DXF file and handle that as same as RX-274x gerber file or Excellon NC file.<br>
+In this version, Only line, circle, arc, and polyline objects are recognized and are translated to gerber file or NC file.
-### PCB Outline
-You can also load a dxf file and handle that as same as RX-274x gerber file or Excellon NC file.<br>
-This function is useful to generate outline data of pnanelized PCB boad.
+### Two way to tranlate DXF file
+Both composition objects, ```GerberComposition``` for RX-274x and ```DrillionComposition``` for Excellon, can accept an object created as result of DXF file loaded. When composition object dump text stream, DXF data tranclate to appropriate format data.<br>
+The object which represent DXF file, can also output translated data directly by ```save``` method. In this case output format is specified by ```filetype``` argument. If ```filetype``` argument is ommited, DXF data is translated to RX-274x gerber data.
```python
import gerberex
+dxf = gerberex.read('sample.dxf')
-dxf = gerberex.read('outline.dxf')
-ctx1 = gerberex.GerberComposition()
-ctx1.merge(dxf)
-ctx2 = gerberex.DrillComposition()
-ctx2.merge(dxf)
+# translate to RX-274x using composition object
+ctx = gerberex.GerberComposition()
+ctx.merge(dxf)
+ctx.dump('sample.gml')
+
+# translate to Excellon using composition object
+ctx = gerberex.DrillComposition()
+ctx.merge(dxf)
+ctx.dump('sample.txt')
+
+# translate to RX-274x directly
+dxf.save('sample2.gml')
+
+# translate to Excellon directly
+dxf.save('sample2.txt', filetype=dxf.FT_EXCELLON)
```
-Circle object, Arc object, Line object and Polyline object are supported. Other kind of objects in DXF file are ignored when translating to gerber data.
-You can specify line width (default 0). PCB tools extension will translate DXF primitive shape to RX-274x line or arc sequense using circle aperture with diamater as same as specified line width. <br>
+### Generating Rectangle
+If you want to arrange simple rectangle for PCB outline, ```gerberex.rectangle()``` is better solution. This generate a object representing a rectangle compatible with DXF file object.<br>
```python
import gerberex
-dxf = gerberex.read('outline.dxf')
-dxf.to_inch()
-dxf.width = 0.004
-dxf.write('outline.gml')
+outline = gerberex.rectangle(width=100, height=100, units='metric')
+outline.write('outline.gml')
```
-If ```FT_EXCELLON``` is specified for ```filetype``` argument of ```write()```, Excellon NC data is generated. In this case, Excellon file consists of routing commands using a specified width drill.
+### Drawing Mode
+PCB tools extension provide three type of translation method that affects geometric finish. These method are specified a value for ```draw_mode``` attribute, ```DM_LINE```, ```DM_MOUSE_BITES```, or ```DM_FILL```.<br>
+```DM_LINE``` and ```DM_MOUSE_BITES``` are used to translate to both of RX-274x and Excellon, however ```DM_FILL``` is used to translate to only RX-274x.
+![Drawing Mode](https://raw.githubusercontent.com/wiki/opiopan/pcb-tools-extension/images/draw_mode.jpg)
-```python
-import gerberex
+- **draw_mode = DM_LINE**<br>
+ All edge expressed as DXF line object, circle object, arc object and plyline objects are translated to line and arc applied a circular aperture in case of RX-274x. That circular aperture r radius is specified by ```width``` attribute. Default value of width is 0.<br>
+ In case of Excellon, DXF objects are translated to routing path command sequence.
+ This function is useful to generate outline data of pnanelized PCB boad.
-dxf = gerberex.read('outline.dxf')
-dxf.to_metric()
-dxf.width = 0.3
-dxf.write('outline.txt', filetype=dxf.FT_EXCELLON)
-```
+ ```python
+ import gerberex
+ dxf = gerberex.read('outline.dxf')
+ dxf.to_inch()
+ dxf.width = 0.004
+ dxf.write('outline.gml')
+ ```
-You can also translate DXF closed shape such as circle to RX-274x polygon fill sequence.<br>
-In order to fill closed shape, ```DM_FILL``` has to be set to ```draw_mode``` property. In this mode, All object except closed shapes listed below are ignored.
+- **draw_mode = DM_MOUSE_BITES**<br>
+ <img alt="mouse bites" src="https://raw.githubusercontent.com/wiki/opiopan/pcb-tools-extension/images/mousebites.png" width=200 align="right">
+ If DM_MOUSE_BITES is specified for draw_mode, filled circles are arranged at equal intervals along a paths consisted of DXF line, arc, circle, and plyline objects.
+ DXF file object in this state can be merged to excellon file also. That means you can arrange mouse bites easily.
-- circle
-- closed polyline
-- closed path which consists of lines and arcs
+ ```python
+ import gerberex
-NOTE: ```DM_FILL``` can be used only to generate RX-274x data, it cannot be used to generate Excellon data.
+ ctx = gerberex.DrillComposition()
+ drill = gerberex.read('drill.txt')
+ ctx.merge(drill)
-```python
-import gerberex
+ dxf = gerberex.read('mousebites.dxf')
+ dxf.draw_mode = dxf.DM_MOUSE_BITES
+ dxf.to_metric()
+ dxf.width = 0.5
+ dxf.pitch = 1
+ ctx.merge(dxf)
-dxf = gerberex.read('outline.dxf')
-dxf.draw_mode = dxf.DM_FILL
-dxf.write('outline.gml')
-```
+ ctx.dump('merged_drill.txt')
+ ```
-If you want to arrange simple rectangle for PCB outline, ```gerberex.rectangle()``` is better solution. This generate a object representing a rectangle compatible with DXF file object.<br>
+- **draw_mode = DM_FILL**<br>
+ You can translate DXF closed shape such as circle to RX-274x polygon fill sequence.<br>
+ In order to fill closed shape, ```DM_FILL``` has to be set to ```draw_mode``` property. In this mode, All object except closed shapes listed below are ignored.
-```python
-import gerberex
+ - circle
+ - closed polyline
+ - closed path which consists of lines and arcs
-outline = gerberex.rectangle(width=100, height=100, units='metric')
-outline.write('outline.gml')
-```
+ If a closed shape is completly included in other closed shape, The inner shape will be draw with reversed polality of container shape as above example image.<br>
-### Mouse bites
+ I assume there are two typical usecase for this mode.<br>
+ One is to arrange logo design on silk layer. This is superior to other method generating raster image data since image data express as vector data.<br>
+ The other one is generating gerber data represented cropped area of panelized PCB.
+ By merging rectangle and PCB outline data, generate a file represented cropped area as below, and this kind of data is useful to make PCB image look good a little bit.<br>
+ [This script](https://github.com/opiopan/pcb-tools-extension/blob/master/examples/genimage.py) which generate example image shown below, also uses this technic.
-<img alt="mouse bites" src="https://raw.githubusercontent.com/wiki/opiopan/pcb-tools-extension/images/mousebites.png" width=200 align="right">
+ ```python
+ import gerberex
+ ctx = gerberex.GerberComposition()
-If ```DM_MOUSE_BITES``` is specified for ```draw_mode```, filled circles are arranged at equal intervals along a paths consisted of DXF line, arc, circle, and plyline objects. <br>
-DXF file object in this state can be merged to excellon file also. That means you can arrange mouse bites easily.
+ rectangle = gerberex.rectangle(width=100, height=100, units='metric')
+ rectangle.draw_mode = rectangle.DM_FILL
+ ctx.merge(rectangle)
+
+ outline = gerberex.read('outline.dxf')
+ outline.draw_mode = outline.DM_FILL
+ outline.negate_polarity()
+ ctx.merge(outline)
-```python
-import gerberex
+ ctx.dump('cropped_area.gml')
+ ```
-ctx = gerberex.DrillComposition()
-drill = gerberex.read('drill.txt')
-ctx.merge(drill)
-
-dxf = gerberex.read('mousebites.dxf')
-dxf.draw_mode = dxf.DM_MOUSE_BITES
-dxf.to_metric()
-dxf.width = 0.5
-dxf.pitch = 1
-ctx.merge(dxf)
+ NOTE: ```DM_FILL``` can be used only to generate RX-274x data, it cannot be used to generate Excellon data.
-ctx.dump('merged_drill.txt')
-```
## Panelizing Example
This example board image is generated by following scripts from [these source data](https://github.com/opiopan/pcb-tools-extension/tree/master/examples/inputs).
diff --git a/examples/inputs/fill.dxf b/examples/inputs/fill.dxf
deleted file mode 100644
index fdea04b..0000000
--- a/examples/inputs/fill.dxf
+++ /dev/null
@@ -1,2602 +0,0 @@
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-4.3709567898628133e-16
-30
-0
-11
-62
-21
-0
-31
-0
-0
-LINE
-5
-171
-100
-AcDbEntity
-8
-0
-100
-AcDbLine
-10
-3.0000000000000004
-20
-0
-30
-0
-11
-0
-21
-0
-31
-0
-0
-LINE
-5
-172
-100
-AcDbEntity
-8
-0
-100
-AcDbLine
-10
-0
-20
-0
-30
-0
-11
-0
-21
-3.0000000000000009
-31
-0
-0
-LINE
-5
-173
-100
-AcDbEntity
-8
-0
-100
-AcDbLine
-10
-0
-20
-60
-30
-0
-11
-0
-21
-57
-31
-0
-0
-ARC
-5
-174
-100
-AcDbEntity
-8
-0
-100
-AcDbCircle
-10
-66.5
-20
-3.5002504107472014
-30
-0
-40
-1.5000000000000124
-100
-AcDbArc
-50
-0
-51
-90
-0
-ENDSEC
-0
-SECTION
-2
-OBJECTS
-0
-DICTIONARY
-5
-C
-100
-AcDbDictionary
-3
-ACAD_GROUP
-350
-D
-3
-ACAD_MLINESTYLE
-350
-17
-0
-DICTIONARY
-5
-D
-100
-AcDbDictionary
-0
-DICTIONARY
-5
-1A
-330
-C
-100
-AcDbDictionary
-0
-DICTIONARY
-5
-17
-100
-AcDbDictionary
-0
-ENDSEC
-0
-EOF
diff --git a/examples/panelize.py b/examples/panelize.py
index 34cc446..20a2cac 100755
--- a/examples/panelize.py
+++ b/examples/panelize.py
@@ -18,7 +18,6 @@ boards=[
]
outline = 'inputs/outline.dxf'
mousebites = 'inputs/mousebites.dxf'
-fill = 'inputs/fill.dxf'
outputs = 'outputs/panelized'
os.chdir(os.path.dirname(__file__))
@@ -62,9 +61,11 @@ file = gerberex.read(outline)
file.write(outputs + '.GML')
putstr('.')
ctx = GerberComposition()
-file = gerberex.read(fill)
-file.to_metric()
+base = gerberex.rectangle(width=100, height=100, left=0, bottom=0, units='metric')
+base.draw_mode = DxfFile.DM_FILL
+ctx.merge(base)
file.draw_mode = DxfFile.DM_FILL
+file.negate_polarity()
ctx.merge(file)
ctx.dump(outputs + '-fill.GML')
diff --git a/gerberex/dxf.py b/gerberex/dxf.py
index 00b7695..95a3114 100644
--- a/gerberex/dxf.py
+++ b/gerberex/dxf.py
@@ -12,12 +12,88 @@ from gerber.gerber_statements import ADParamStmt
from gerber.excellon_statements import ExcellonTool
from gerber.excellon_statements import CoordinateStmt
from gerberex.utility import is_equal_point, is_equal_value
-from gerberex.dxf_path import generate_paths
+from gerberex.dxf_path import generate_paths, judge_containment
from gerberex.excellon import write_excellon_header
from gerberex.rs274x import write_gerber_header
ACCEPTABLE_ERROR = 0.001
+def _normalize_angle(start_angle, end_angle):
+ angle = end_angle - start_angle
+ if angle > 0:
+ start = start_angle % 360
+ else:
+ angle = -angle
+ start = end_angle % 360
+ angle = min(angle, 360)
+ start = start - 360 if start > 180 else start
+
+ regions = []
+ while angle > 0:
+ end = start + angle
+ if end <= 180:
+ regions.append((start * pi / 180, end * pi / 180))
+ angle = 0
+ else:
+ regions.append((start * pi / 180, pi))
+ angle = end - 180
+ start = -180
+ return regions
+
+def _intersections_of_line_and_circle(start, end, center, radius, error_range):
+ x1 = start[0] - center[0]
+ y1 = start[1] - center[1]
+ x2 = end[0] - center[0]
+ y2 = end[1] - center[1]
+
+ dx = x2 - x1
+ dy = y2 - y1
+ dr = sqrt(dx * dx + dy * dy)
+ D = x1 * y2 - x2 * y1
+
+ D2 = D * D
+ dr2 = dr * dr
+ r2 = radius * radius
+ delta = r2 * dr2 - D2
+ e4 = error_range * error_range * error_range * error_range * 10
+ if delta > - e4 and delta < e4:
+ delta = 0
+ if delta < 0:
+ return None
+
+ sqrt_D = sqrt(delta)
+ E_x = -dx * sqrt_D if dy < 0 else dx * sqrt_D
+ E_y = abs(dy) * sqrt_D
+
+ p1_x = (D * dy + E_x) / dr2
+ p2_x = (D * dy - E_x) / dr2
+ p1_y = (-D * dx + E_y) / dr2
+ p2_y = (-D * dx - E_y) / dr2
+
+ p1_angle = atan2(p1_y, p1_x)
+ p2_angle = atan2(p2_y, p2_x)
+ if dx == 0:
+ p1_t = (p1_y - y1) / dy
+ p2_t = (p2_y - y1) / dy
+ else:
+ p1_t = (p1_x - x1) / dx
+ p2_t = (p2_x - x1) / dx
+
+ if delta == 0:
+ return (
+ (p1_x + center[0], p1_y + center[1]),
+ None,
+ p1_angle, None,
+ p1_t, None
+ )
+ else:
+ return (
+ (p1_x + center[0], p1_y + center[1]),
+ (p2_x + center[0], p2_y + center[1]),
+ p1_angle, p2_angle,
+ p1_t, p2_t
+ )
+
class DxfStatement(object):
def __init__(self, entity):
self.entity = entity
@@ -51,6 +127,13 @@ class DxfLineStatement(DxfStatement):
end = (entity.end[0], entity.end[1])
return cls(entity, start, end)
+ @property
+ def bounding_box(self):
+ return (min(self.start[0], self.end[0]),
+ min(self.start[1], self.end[1]),
+ max(self.start[0], self.end[0]),
+ max(self.start[1], self.end[1]))
+
def __init__(self, entity, start, end):
super(DxfLineStatement, self).__init__(entity)
self.start = start
@@ -110,6 +193,53 @@ class DxfLineStatement(DxfStatement):
def rotate(self, angle, center=(0, 0)):
self.start = rotate_point(self.start, angle, center)
self.end = rotate_point(self.end, angle, center)
+
+ def intersections_with_halfline(self, point_from, point_to, error_range):
+ denominator = (self.end[0] - self.start[0]) * (point_to[1] - point_from[1]) - \
+ (self.end[1] - self.start[1]) * (point_to[0] - point_from[0])
+ de = error_range * error_range
+ if denominator > -de and denominator < de:
+ return []
+ from_dx = point_from[0] - self.start[0]
+ from_dy = point_from[1] - self.start[1]
+ r = ((point_to[1] - point_from[1]) * from_dx -
+ (point_to[0] - point_from[0]) * from_dy) / denominator
+ s = ((self.end[1] - self.start[1]) * from_dx -
+ (self.end[0] - self.start[0]) * from_dy) / denominator
+ dx = (self.end[0] - self.start[0])
+ dy = (self.end[1] - self.start[1])
+ le = error_range / sqrt(dx * dx + dy * dy)
+ if s < 0 or r < -le or r > 1 + le:
+ return []
+
+ pt = (self.start[0] + (self.end[0] - self.start[0]) * r,
+ self.start[1] + (self.end[1] - self.start[1]) * r)
+ if is_equal_point(pt, self.start, error_range):
+ return []
+ else:
+ return [pt]
+
+ def intersections_with_arc(self, center, radius, angle_regions, error_range):
+ intersection = \
+ _intersections_of_line_and_circle(self.start, self.end, center, radius, error_range)
+ if intersection is None:
+ return []
+ else:
+ p1, p2, p1_angle, p2_angle, p1_t, p2_t = intersection
+
+ pts = []
+ if p1_t >= 0 and p1_t <= 1:
+ for region in angle_regions:
+ if p1_angle >= region[0] and p1_angle <= region[1]:
+ pts.append(p1)
+ break
+ if p2 is not None and p2_t >= 0 and p2_t <= 1:
+ for region in angle_regions:
+ if p2_angle >= region[0] and p2_angle <= region[1]:
+ pts.append(p2)
+ break
+
+ return pts
class DxfArcStatement(DxfStatement):
def __init__(self, entity):
@@ -139,6 +269,12 @@ class DxfArcStatement(DxfStatement):
self.is_closed = angle >= 360 or angle <= -360
else:
raise Exception('invalid DXF type was specified')
+ self.angle_regions = _normalize_angle(self.start_angle, self.end_angle)
+
+ @property
+ def bounding_box(self):
+ return (self.center[0] - self.radius, self.center[1] - self.radius,
+ self.center[0] + self.radius, self.center[1] + self.radius)
def to_inch(self):
self.radius = inch(self.radius)
@@ -204,6 +340,82 @@ class DxfArcStatement(DxfStatement):
self.center = rotate_point(self.center, angle, center)
self.start = rotate_point(self.start, angle, center)
self.end = rotate_point(self.end, angle, center)
+ self.angle_regions = _normalize_angle(self.start_angle, self.end_angle)
+
+ def intersections_with_halfline(self, point_from, point_to, error_range):
+ intersection = \
+ _intersections_of_line_and_circle(
+ point_from, point_to, self.center, self.radius, error_range)
+ if intersection is None:
+ return []
+ else:
+ p1, p2, p1_angle, p2_angle, p1_t, p2_t = intersection
+
+ if is_equal_point(p1, self.start, error_range):
+ p1 = None
+ elif p2 is not None and is_equal_point(p2, self.start, error_range):
+ p2 = None
+
+ aerror = error_range * self.radius
+ pts = []
+ if p1 is not None and p1_t >= 0 and not is_equal_point(p1, self.start, error_range):
+ for region in self.angle_regions:
+ if p1_angle >= region[0] - aerror and p1_angle <= region[1] + aerror:
+ pts.append(p1)
+ break
+ if p2 is not None and p2_t >= 0 and not is_equal_point(p2, self.start, error_range):
+ for region in self.angle_regions:
+ if p2_angle >= region[0] - aerror and p2_angle <= region[1] + aerror:
+ pts.append(p2)
+ break
+
+ return pts
+
+ def intersections_with_arc(self, center, radius, angle_regions, error_range):
+ x1 = center[0] - self.center[0]
+ y1 = center[1] - self.center[1]
+ r1 = self.radius
+ r2 = radius
+ cd_sq = x1 * x1 + y1 * y1
+ cd = sqrt(cd_sq)
+ rd = abs(r1 - r2)
+
+ if (cd >= 0 and cd <= rd) or cd >= r1 + r2:
+ return []
+
+ A = (cd_sq + r1 * r1 - r2 * r2) / 2
+ scale = sqrt(cd_sq * r1 * r1 - A * A) / cd_sq
+ xl = A * x1 / cd_sq
+ xr = y1 * scale
+ yl = A * y1 / cd_sq
+ yr = x1 * scale
+
+ pt1_x = xl + xr
+ pt1_y = yl - yr
+ pt2_x = xl - xr
+ pt2_y = yl + yr
+ pt1_angle1 = atan2(pt1_y, pt1_x)
+ pt1_angle2 = atan2(pt1_y - y1, pt1_x - x1)
+ pt2_angle1 = atan2(pt2_y, pt2_x)
+ pt2_angle2 = atan2(pt2_y - y1, pt2_x - x1)
+
+ aerror = error_range * self.radius
+ pts=[]
+ for region in self.angle_regions:
+ if pt1_angle1 >= region[0] and pt1_angle1 <= region[1]:
+ for region in angle_regions:
+ if pt1_angle2 >= region[0] - aerror and pt1_angle2 <= region[1] + aerror:
+ pts.append((pt1_x + self.center[0], pt1_y + self.center[1]))
+ break
+ break
+ for region in self.angle_regions:
+ if pt2_angle1 >= region[0] and pt2_angle1 <= region[1]:
+ for region in angle_regions:
+ if pt2_angle2 >= region[0] - aerror and pt2_angle2 <= region[1] + aerror:
+ pts.append((pt2_x + self.center[0], pt2_y + self.center[1]))
+ break
+ break
+ return pts
class DxfPolylineStatement(DxfStatement):
def __init__(self, entity):
@@ -293,31 +505,69 @@ class DxfPolylineStatement(DxfStatement):
self.entity.points[idx] = rotate_point(self.entity.points[idx], angle, center)
class DxfStatements(object):
- def __init__(self, statements, units, dcode=10, draw_mode=None):
- if draw_mode == None:
+ def __init__(self, statements, units, dcode=10, draw_mode=None, fill_mode=None):
+ if draw_mode is None:
draw_mode = DxfFile.DM_LINE
+ if fill_mode is None:
+ fill_mode = DxfFile.FM_TURN_OVER
self._units = units
self.dcode = dcode
self.draw_mode = draw_mode
+ self.fill_mode = fill_mode
self.pitch = inch(1) if self._units == 'inch' else 1
self.width = 0
self.error_range = inch(ACCEPTABLE_ERROR) if self._units == 'inch' else ACCEPTABLE_ERROR
- self.statements = statements
+ self.statements = list(filter(
+ lambda i: not (isinstance(i, DxfLineStatement) and \
+ is_equal_point(i.start, i.end, self.error_range)),
+ statements
+ ))
self.close_paths, self.open_paths = generate_paths(self.statements, self.error_range)
+ self.sorted_close_paths = []
+ self.polarity = True # True means dark, False means clear
@property
def units(self):
return _units
+ def _polarity_command(self, polarity=None):
+ if polarity is None:
+ polarity = self.polarity
+ return '%LPD*%' if polarity else '%LPC*%'
+
+ def _prepare_sorted_close_paths(self):
+ if self.sorted_close_paths:
+ return
+ for i in range(0, len(self.close_paths)):
+ for j in range(i + 1, len(self.close_paths)):
+ containee, container = judge_containment(
+ self.close_paths[i], self.close_paths[j], self.error_range)
+ if containee is not None:
+ containee.containers.append(container)
+ self.sorted_close_paths = sorted(self.close_paths, key=lambda path: len(path.containers))
+
def to_gerber(self, settings=FileSettings()):
def gerbers():
yield 'G75*'
- yield '%LPD*%'
+ yield self._polarity_command()
yield 'D{0}*'.format(self.dcode)
if self.draw_mode == DxfFile.DM_FILL:
yield 'G36*'
- for path in self.close_paths:
- yield path.to_gerber(settings)
+ if self.fill_mode == DxfFile.FM_TURN_OVER:
+ self._prepare_sorted_close_paths()
+ polarity = self.polarity
+ level = 0
+ for path in self.sorted_close_paths:
+ if len(path.containers) > level:
+ level = len(path.containers)
+ polarity = not polarity
+ yield 'G37*'
+ yield self._polarity_command(polarity)
+ yield 'G36*'
+ yield path.to_gerber(settings)
+ else:
+ for path in self.close_paths:
+ yield path.to_gerber(settings)
yield 'G37*'
else:
pitch = self.pitch if self.draw_mode == DxfFile.DM_MOUSE_BITES else 0
@@ -378,6 +628,9 @@ class DxfFile(CamFile):
DM_FILL = 1
DM_MOUSE_BITES = 2
+ FM_SIMPLE = 0
+ FM_TURN_OVER = 1
+
FT_RX274X = 0
FT_EXCELLON = 1
@@ -430,6 +683,7 @@ class DxfFile(CamFile):
super(DxfFile, self).__init__(settings=settings, filename=filename)
self._draw_mode = draw_mode
+ self._fill_mode = self.FM_TURN_OVER
self.aperture = ADParamStmt.circle(dcode=10, diameter=0.0)
if settings.units == 'inch':
@@ -437,7 +691,7 @@ class DxfFile(CamFile):
else:
self.aperture.to_metric()
self.statements = DxfStatements(
- statements, self.units, dcode=self.aperture.d, draw_mode=self.draw_mode)
+ statements, self.units, dcode=self.aperture.d, draw_mode=self.draw_mode, fill_mode=self.filename)
@property
def dcode(self):
@@ -467,6 +721,15 @@ class DxfFile(CamFile):
self.statements.draw_mode = value
@property
+ def fill_mode(self):
+ return self._fill_mode
+
+ @fill_mode.setter
+ def fill_mode(self, value):
+ self._fill_mode = value
+ self.statements.fill_mode = value
+
+ @property
def pitch(self):
return self.statements.pitch
@@ -512,6 +775,9 @@ class DxfFile(CamFile):
def rotate(self, angle, center=(0, 0)):
self.statements.rotate(angle, center)
+ def negate_polarity(self):
+ self.statements.polarity = not self.statements.polarity
+
def loads(data, filename=None):
if sys.version_info.major == 2:
data = unicode(data)
diff --git a/gerberex/dxf_path.py b/gerberex/dxf_path.py
index 1307411..bb620ff 100644
--- a/gerberex/dxf_path.py
+++ b/gerberex/dxf_path.py
@@ -5,13 +5,17 @@
from gerber.utils import inch, metric, write_gerber_value
from gerber.cam import FileSettings
-from gerberex.utility import is_equal_point, is_equal_value
+from gerberex.utility import is_equal_point, is_equal_value, normalize_vec2d, dot_vec2d
from gerberex.excellon import CoordinateStmtEx
class DxfPath(object):
def __init__(self, statements, error_range=0):
self.statements = statements
self.error_range = error_range
+ self.bounding_box = statements[0].bounding_box
+ self.containers = []
+ for statement in statements[1:]:
+ self._merge_bounding_box(statement.bounding_box)
@property
def start(self):
@@ -116,12 +120,15 @@ class DxfPath(object):
if j > 0:
del mergee[-j]
del self.statements[0:j]
+ for statement in mergee:
+ self._merge_bounding_box(statement.bounding_box)
self.statements.extend(mergee)
return True
else:
if self.statements[-1].is_equal_to(element, error_range) or \
self.statements[0].is_equal_to(element, error_range):
return False
+ self._merge_bounding_box(element.bounding_box)
self.statements.appen(element)
return True
@@ -153,6 +160,21 @@ class DxfPath(object):
self.statements.insert(0, element)
return True
+ def _merge_bounding_box(self, box):
+ self.bounding_box = (min(self.bounding_box[0], box[0]),
+ min(self.bounding_box[1], box[1]),
+ max(self.bounding_box[2], box[2]),
+ max(self.bounding_box[3], box[3]))
+
+ def may_be_in_collision(self, path):
+ if self.bounding_box[0] >= path.bounding_box[2] or \
+ self.bounding_box[1] >= path.bounding_box[3] or \
+ self.bounding_box[2] <= path.bounding_box[0] or \
+ self.bounding_box[3] <= path.bounding_box[1]:
+ return False
+ else:
+ return True
+
def to_gerber(self, settings=FileSettings(), pitch=0, width=0):
from gerberex.dxf import DxfArcStatement
if pitch == 0:
@@ -244,7 +266,61 @@ class DxfPath(object):
out += ploter(dot[0], dot[1])
return out
+ def intersections_with_halfline(self, point_from, point_to, error_range=0):
+ def calculator(statement):
+ return statement.intersections_with_halfline(point_from, point_to, error_range)
+ def validator(pt, statement, idx):
+ if is_equal_point(pt, statement.end, error_range) and \
+ not self._judge_cross(point_from, point_to, idx, error_range):
+ return False
+ return True
+ return self._collect_intersections(calculator, validator, error_range)
+
+ def intersections_with_arc(self, center, radius, angle_regions, error_range=0):
+ def calculator(statement):
+ return statement.intersections_with_arc(center, radius, angle_regions, error_range)
+ return self._collect_intersections(calculator, None, error_range)
+ def _collect_intersections(self, calculator, validator, error_range):
+ allpts = []
+ last = allpts
+ for i in range(0, len(self.statements)):
+ statement = self.statements[i]
+ cur = calculator(statement)
+ if cur:
+ for pt in cur:
+ for dest in allpts:
+ if is_equal_point(pt, dest, error_range):
+ break
+ else:
+ if validator is not None and not validator(pt, statement, i):
+ continue
+ allpts.append(pt)
+ last = cur
+ return allpts
+
+ def _judge_cross(self, from_pt, to_pt, index, error_range):
+ standard = normalize_vec2d((to_pt[0] - from_pt[0], to_pt[1] - from_pt[1]))
+ normal = (standard[1], standard[0])
+ def statements():
+ for i in range(index, len(self.statements)):
+ yield self.statements[i]
+ for i in range(0, index):
+ yield self.statements[i]
+ dot_standard = None
+ for statement in statements():
+ tstart = statement.start
+ tend = statement.end
+ target = normalize_vec2d((tend[0] - tstart[0], tend[1] - tstart[1]))
+ dot= dot_vec2d(normal, target)
+ if dot_standard is None:
+ dot_standard = dot
+ continue
+ if is_equal_point(standard, target, error_range):
+ continue
+ return (dot_standard > 0 and dot > 0) or (dot_standard < 0 and dot < 0)
+ raise Exception('inconsistensy is detected while cross judgement between paths')
+
def generate_paths(statements, error_range=0):
from gerberex.dxf import DxfPolylineStatement
@@ -287,3 +363,50 @@ def generate_paths(statements, error_range=0):
closed_path = list(filter(lambda p: p.is_closed, paths))
open_path = list(filter(lambda p: not p.is_closed, paths))
return (closed_path, open_path)
+
+def judge_containment(path1, path2, error_range=0):
+ from gerberex.dxf import DxfArcStatement, DxfLineStatement
+
+ nocontainment = (None, None)
+ if not path1.may_be_in_collision(path2):
+ return nocontainment
+
+ def is_in_line_segment(point_from, point_to, point):
+ dx = point_to[0] - point_from[0]
+ ratio = (point[0] - point_from[0]) / dx if dx != 0 else \
+ (point[1] - point_from[1]) / (point_to[1] - point_from[1])
+ return ratio >= 0 and ratio <= 1
+
+ def contain_in_path(statement, path):
+ if isinstance(statement, DxfLineStatement):
+ segment = (statement.start, statement.end)
+ elif isinstance(statement, DxfArcStatement):
+ if statement.start == statement.end:
+ segment = (statement.start, statement.center)
+ else:
+ segment = (statement.start, statement.end)
+ else:
+ raise Exception('invalid dxf statement type')
+ pts = path.intersections_with_halfline(segment[0], segment[1], error_range)
+ if len(pts) % 2 == 0:
+ return False
+ for pt in pts:
+ if is_in_line_segment(segment[0], segment[1], pt):
+ return False
+ if isinstance(statement, DxfArcStatement):
+ pts = path.intersections_with_arc(
+ statement.center, statement.radius, statement.angle_regions, error_range)
+ if len(pts) > 0:
+ return False
+ return True
+
+ if contain_in_path(path1.statements[0], path2):
+ containment = [path1, path2]
+ elif contain_in_path(path2.statements[0], path1):
+ containment = [path2, path1]
+ else:
+ return nocontainment
+ for i in range(1, len(containment[0].statements)):
+ if not contain_in_path(containment[0].statements[i], containment[1]):
+ return nocontainment
+ return containment
diff --git a/gerberex/utility.py b/gerberex/utility.py
index 4c89fa6..37de5e8 100644
--- a/gerberex/utility.py
+++ b/gerberex/utility.py
@@ -3,7 +3,7 @@
# Copyright 2019 Hiroshi Murayama <opiopan@gmail.com>
-from math import cos, sin, pi
+from math import cos, sin, pi, sqrt
def rotate(x, y, angle, center):
x0 = x - center[0]
@@ -18,3 +18,10 @@ def is_equal_value(a, b, error_range=0):
def is_equal_point(a, b, error_range=0):
return is_equal_value(a[0], b[0], error_range) and \
is_equal_value(a[1], b[1], error_range)
+
+def normalize_vec2d(vec):
+ length = sqrt(vec[0] * vec[0] + vec[1] * vec[1])
+ return (vec[0] / length, vec[1] / length)
+
+def dot_vec2d(vec1, vec2):
+ return vec1[0] * vec2[0] + vec1[1] * vec2[1] \ No newline at end of file
diff --git a/setup.py b/setup.py
index 6f144cb..bfe25c1 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@ def read(fname):
METADATA = {
'name': 'pcb-tools-extension',
- 'version': "0.9.1",
+ 'version': "0.9.2",
'author': 'Hiroshi Murayama <opiopan@gmail.com>',
'author_email': "opiopan@gmail.com",
'description': ("Extension for pcb-tools package to panelize gerber files"),
diff --git a/tests/data/ref_dxf_metric.dxf b/tests/data/ref_dxf_metric.dxf
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diff --git a/tests/data/ref_dxf_mousebites.dxf b/tests/data/ref_dxf_mousebites.dxf
deleted file mode 100644
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+++ /dev/null
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diff --git a/tests/expects/dxf_offset.gtl b/tests/expects/dxf_offset.gtl
index ff0cdda..df1b015 100644
--- a/tests/expects/dxf_offset.gtl
+++ b/tests/expects/dxf_offset.gtl
@@ -6,36 +6,88 @@ G75*
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diff --git a/tests/expects/dxf_rotate.gtl b/tests/expects/dxf_rotate.gtl
index c6449ca..5c04b64 100644
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+++ b/tests/expects/dxf_rotate.gtl
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index f18c9f7..4b82fb2 100644
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new file mode 100644
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diff --git a/tests/expects/dxf_save_line.gtl b/tests/expects/dxf_save_line.gtl
index d1966ad..b3ee8f1 100644
--- a/tests/expects/dxf_save_line.gtl
+++ b/tests/expects/dxf_save_line.gtl
@@ -1,41 +1,93 @@
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diff --git a/tests/expects/dxf_save_line.txt b/tests/expects/dxf_save_line.txt
new file mode 100644
index 0000000..c3d73d4
--- /dev/null
+++ b/tests/expects/dxf_save_line.txt
@@ -0,0 +1,84 @@
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diff --git a/tests/expects/dxf_save_mousebites.gtl b/tests/expects/dxf_save_mousebites.gtl
index 282234d..64cc6d8 100644
--- a/tests/expects/dxf_save_mousebites.gtl
+++ b/tests/expects/dxf_save_mousebites.gtl
@@ -5,24 +5,578 @@
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M02*
diff --git a/tests/expects/dxf_save_mousebites.txt b/tests/expects/dxf_save_mousebites.txt
index e82825a..4a64514 100644
--- a/tests/expects/dxf_save_mousebites.txt
+++ b/tests/expects/dxf_save_mousebites.txt
@@ -7,24 +7,578 @@ T01C0.500
G90
M71
T01
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M30
diff --git a/tests/expects/dxf_to_inch.gtl b/tests/expects/dxf_to_inch.gtl
index aa862bf..f838214 100644
--- a/tests/expects/dxf_to_inch.gtl
+++ b/tests/expects/dxf_to_inch.gtl
@@ -6,36 +6,88 @@ G75*
%LPD*%
D10*
G01*
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+G75*
+G03*
+X364964Y49731I-49395J0D01*
+G01*
+X237312Y255906D02*
G75*
G03*
-X3610Y19685I-1181J0D01*
+X237312Y255906I-40462J0D01*
+G01*
+X196850Y255906D02*
+G75*
+G01*
+X196850Y281336D01*
+G03*
+X221497Y249641I0J-25430D01*
+G01*
+X196850Y255906D01*
M02*
diff --git a/tests/test_dxf.py b/tests/test_dxf.py
index 31589da..3d4d28e 100644
--- a/tests/test_dxf.py
+++ b/tests/test_dxf.py
@@ -19,7 +19,6 @@ class TestExcellon(unittest.TestCase):
cls.OUTPREFIX = 'dxf_'
cls.METRIC_FILE = os.path.join(cls.INDIR, 'ref_dxf_metric.dxf')
cls.INCH_FILE = os.path.join(cls.INDIR, 'ref_dxf_inch.dxf')
- cls.MOUSEBITES_FILE = os.path.join(cls.INDIR, 'ref_dxf_mousebites.dxf')
try:
os.mkdir(cls.OUTDIR)
except FileExistsError:
@@ -36,6 +35,7 @@ class TestExcellon(unittest.TestCase):
outfile = os.path.join(self.OUTDIR, self.OUTPREFIX + 'save_line.gtl')
dxf = gerberex.read(self.METRIC_FILE)
dxf.draw_mode = dxf.DM_LINE
+ dxf.width = 0.2
dxf.write(outfile)
self._checkResult(outfile)
@@ -46,23 +46,41 @@ class TestExcellon(unittest.TestCase):
dxf.write(outfile)
self._checkResult(outfile)
+ def test_save_fill_simple(self):
+ outfile = os.path.join(self.OUTDIR, self.OUTPREFIX + 'save_fill_simple.gtl')
+ dxf = gerberex.read(self.METRIC_FILE)
+ dxf.draw_mode = dxf.DM_FILL
+ dxf.fill_mode = dxf.FM_SIMPLE
+ dxf.write(outfile)
+ self._checkResult(outfile)
+
def test_save_mousebites(self):
outfile = os.path.join(self.OUTDIR, self.OUTPREFIX + 'save_mousebites.gtl')
- dxf = gerberex.read(self.MOUSEBITES_FILE)
+ dxf = gerberex.read(self.METRIC_FILE)
dxf.draw_mode = dxf.DM_MOUSE_BITES
dxf.width = 0.5
- dxf.pitch = 1
+ dxf.pitch = 1.4
dxf.write(outfile)
self._checkResult(outfile)
def test_save_excellon(self):
outfile = os.path.join(
+ self.OUTDIR, self.OUTPREFIX + 'save_line.txt')
+ dxf = gerberex.read(self.METRIC_FILE)
+ dxf.draw_mode = dxf.DM_LINE
+ dxf.format = (3,3)
+ dxf.width = 0.2
+ dxf.write(outfile, filetype=dxf.FT_EXCELLON)
+ self._checkResult(outfile)
+
+ def test_save_excellon_mousebites(self):
+ outfile = os.path.join(
self.OUTDIR, self.OUTPREFIX + 'save_mousebites.txt')
- dxf = gerberex.read(self.MOUSEBITES_FILE)
+ dxf = gerberex.read(self.METRIC_FILE)
dxf.draw_mode = dxf.DM_MOUSE_BITES
- dxf.format = (3,3)
+ dxf.format = (3, 3)
dxf.width = 0.5
- dxf.pitch = 1
+ dxf.pitch = 1.4
dxf.write(outfile, filetype=dxf.FT_EXCELLON)
self._checkResult(outfile)
generated by cgit (git 2.34.1) at 2024-11-21 18:07:10 +0000