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authorjaseg <git@jaseg.de>2022-01-08 23:30:38 +0100
committerjaseg <git@jaseg.de>2022-01-08 23:30:38 +0100
commit44006784f0b72a3fe7e29c818e45a533a02641a7 (patch)
tree4815506f4d39bff1307b4bd617e5bf99bec25bdd /gerbonara/gerber/rs274x.py
parentf09ef6f1172ca362c025048b45538c087cab0dc3 (diff)
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Basic SVG export seems to be working
Diffstat (limited to 'gerbonara/gerber/rs274x.py')
-rw-r--r--gerbonara/gerber/rs274x.py45
1 files changed, 30 insertions, 15 deletions
diff --git a/gerbonara/gerber/rs274x.py b/gerbonara/gerber/rs274x.py
index 53b4e5e..3ee8c4d 100644
--- a/gerbonara/gerber/rs274x.py
+++ b/gerbonara/gerber/rs274x.py
@@ -31,6 +31,7 @@ import functools
from pathlib import Path
from itertools import count, chain
from io import StringIO
+import textwrap
from .gerber_statements import *
from .cam import CamFile, FileSettings
@@ -41,7 +42,7 @@ from . import graphic_objects as go
from . import apertures
-def convert(self, value, src, dst):
+def convert(value, src, dst):
if src == dst or src is None or dst is None or value is None:
return value
elif dst == 'mm':
@@ -60,16 +61,19 @@ def points_close(a, b):
return math.isclose(a[0], b[0]) and math.isclose(a[1], b[1])
class Tag:
- def __init__(self, name, children=None, **attrs):
- self.name, self.children, self.attrs = name, children, attrs
+ def __init__(self, name, children=None, root=False, **attrs):
+ self.name, self.attrs = name, attrs
+ self.children = children or []
+ self.root = root
def __str__(self):
- opening = ' '.join([self.name] + [f'{key}="{value}"' for key, value in self.attrs.items()])
+ prefix = '<?xml version="1.0" encoding="utf-8"?>\n' if self.root else ''
+ opening = ' '.join([self.name] + [f'{key.replace("__", ":")}="{value}"' for key, value in self.attrs.items()])
if self.children:
- children = '\n'.join(textwrap.indent(str(c), ' ') for c in children)
- return f'<{opening}>\n{children}\n</{self.name}>'
+ children = '\n'.join(textwrap.indent(str(c), ' ') for c in self.children)
+ return f'{prefix}<{opening}>\n{children}\n</{self.name}>'
else:
- return f'<{opening}/>'
+ return f'{prefix}<{opening}/>'
class GerberFile(CamFile):
""" A class representing a single gerber file
@@ -83,12 +87,19 @@ class GerberFile(CamFile):
self.comments = []
self.objects = []
- def to_svg(self, tag=Tag, margin=0, margin_unit='mm', svg_unit='mm'):
+ def to_svg(self, tag=Tag, margin=0, arg_unit='mm', svg_unit='mm', force_bounds=None, color='black'):
- (min_x, min_y), (max_x, max_y) = self.bounding_box(svg_unit)
+ if force_bounds is None:
+ (min_x, min_y), (max_x, max_y) = self.bounding_box(svg_unit)
+ else:
+ (min_x, min_y), (max_x, max_y) = force_bounds
+ min_x = convert(min_x, arg_unit, svg_unit)
+ min_y = convert(min_y, arg_unit, svg_unit)
+ max_x = convert(max_x, arg_unit, svg_unit)
+ max_y = convert(max_y, arg_unit, svg_unit)
if margin:
- margin = convert(margin, margin_unit, svg_unit)
+ margin = convert(margin, arg_unit, svg_unit)
min_x -= margin
min_y -= margin
max_x += margin
@@ -96,13 +107,17 @@ class GerberFile(CamFile):
w, h = max_x - min_x, max_y - min_y
- primitives = [
- [ tag(*prim.to_svg()) for prim in obj.to_primitives(unit=svg_unit) ]
- for obj in self.objects ]
+ primitives = [ prim.to_svg(tag, color) for obj in self.objects for prim in obj.to_primitives(unit=svg_unit) ]
- # FIXME setup viewport transform flipping y axis
+ # setup viewport transform flipping y axis
+ xform = f'scale(0 -1) translate(0 {h})'
- return tag('svg', [defs, *primitives], width=w, height=h, viewBox=f'{min_x} {min_y} {w} {h}')
+ svg_unit = 'in' if svg_unit == 'inch' else 'mm'
+ # TODO export apertures as <uses> where reasonable.
+ return tag('svg', [*primitives],
+ width=f'{w}{svg_unit}', height=f'{h}{svg_unit}',
+ viewBox=f'{min_x} {min_y} {w} {h}', transform=xform,
+ xmlns="http://www.w3.org/2000/svg", xmlns__xlink="http://www.w3.org/1999/xlink", root=True)
def merge(self, other):
""" Merge other GerberFile into this one """