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authorHamilton Kibbe <hamilton.kibbe@gmail.com>2014-10-27 08:29:43 -0400
committerHamilton Kibbe <hamilton.kibbe@gmail.com>2014-10-27 08:29:43 -0400
commit95de179bb08157c3f6716b0645ec00794acc83e6 (patch)
tree76dc30efcd3eb451541f4e31fcf82a1114bd7f26 /gerber
parent318a81382e074a5897489299a58e029815d23492 (diff)
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Fix rendering of 0-width lines (e.g. board outlines) in SVG and Cairo renderer
Diffstat (limited to 'gerber')
-rw-r--r--gerber/render/cairo_backend.py13
-rw-r--r--gerber/render/svgwrite_backend.py63
2 files changed, 13 insertions, 63 deletions
diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py
index df513bb..1c69725 100644
--- a/gerber/render/cairo_backend.py
+++ b/gerber/render/cairo_backend.py
@@ -20,7 +20,7 @@ from operator import mul
import cairocffi as cairo
import math
-SCALE = 300.
+SCALE = 400.
class GerberCairoContext(GerberContext):
@@ -48,8 +48,9 @@ class GerberCairoContext(GerberContext):
def _render_line(self, line, color):
start = map(mul, line.start, self.scale)
end = map(mul, line.end, self.scale)
- self.ctx.set_source_rgb (*color)
- self.ctx.set_line_width(line.width * SCALE)
+ width = line.width if line.width != 0 else 0.001
+ self.ctx.set_source_rgba(*color, alpha=self.alpha)
+ self.ctx.set_line_width(width * SCALE)
self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
self.ctx.move_to(*start)
self.ctx.line_to(*end)
@@ -57,7 +58,7 @@ class GerberCairoContext(GerberContext):
def _render_region(self, region, color):
points = [tuple(map(mul, point, self.scale)) for point in region.points]
- self.ctx.set_source_rgb (*color)
+ self.ctx.set_source_rgba(*color, alpha=self.alpha)
self.ctx.set_line_width(0)
self.ctx.move_to(*points[0])
for point in points[1:]:
@@ -66,7 +67,7 @@ class GerberCairoContext(GerberContext):
def _render_circle(self, circle, color):
center = map(mul, circle.position, self.scale)
- self.ctx.set_source_rgb (*color)
+ self.ctx.set_source_rgba(*color, alpha=self.alpha)
self.ctx.set_line_width(0)
self.ctx.arc(*center, radius=circle.radius * SCALE, angle1=0, angle2=2 * math.pi)
self.ctx.fill()
@@ -74,7 +75,7 @@ class GerberCairoContext(GerberContext):
def _render_rectangle(self, rectangle, color):
ll = map(mul, rectangle.lower_left, self.scale)
width, height = tuple(map(mul, (rectangle.width, rectangle.height), map(abs, self.scale)))
- self.ctx.set_source_rgb (*color)
+ self.ctx.set_source_rgba(*color, alpha=self.alpha)
self.ctx.set_line_width(0)
self.ctx.rectangle(*ll,width=width, height=height)
self.ctx.fill()
diff --git a/gerber/render/svgwrite_backend.py b/gerber/render/svgwrite_backend.py
index 2df87b3..aeb680c 100644
--- a/gerber/render/svgwrite_backend.py
+++ b/gerber/render/svgwrite_backend.py
@@ -20,7 +20,7 @@ from .render import GerberContext
from operator import mul
import svgwrite
-SCALE = 300
+SCALE = 400.
def svg_color(color):
@@ -56,9 +56,10 @@ class GerberSvgContext(GerberContext):
def _render_line(self, line, color):
start = map(mul, line.start, self.scale)
end = map(mul, line.end, self.scale)
+ width = line.width if line.width != 0 else 0.001
aline = self.dwg.line(start=start, end=end,
stroke=svg_color(color),
- stroke_width=SCALE * line.width,
+ stroke_width=SCALE * width,
stroke_linecap='round')
aline.stroke(opacity=self.alpha)
self.dwg.add(aline)
@@ -91,62 +92,10 @@ class GerberSvgContext(GerberContext):
self.dwg.add(arect)
def _render_obround(self, obround, color):
- x, y = tuple(map(mul, obround.position, self.scale))
- xsize, ysize = tuple(map(mul, (obround.width, obround.height),
- self.scale))
- xscale, yscale = self.scale
-
- # Corner case...
- if xsize == ysize:
- circle = self.dwg.circle(center=(x, y),
- r = (xsize / 2.0),
- fill=svg_color(color))
- circle.fill(opacity=self.alpha)
- self.dwg.add(circle)
-
- # Horizontal obround
- elif xsize > ysize:
- rectx = xsize - ysize
- recty = ysize
- c1 = self.dwg.circle(center=(x - (rectx / 2.0), y),
- r = (ysize / 2.0),
- fill=svg_color(color))
-
- c2 = self.dwg.circle(center=(x + (rectx / 2.0), y),
- r = (ysize / 2.0),
- fill=svg_color(color))
-
- rect = self.dwg.rect(insert=(x, y),
- size=(xsize, ysize),
- fill=svg_color(color))
- c1.fill(opacity=self.alpha)
- c2.fill(opacity=self.alpha)
- rect.fill(opacity=self.alpha)
- self.dwg.add(c1)
- self.dwg.add(c2)
- self.dwg.add(rect)
+ self._render_circle(obround.subshapes['circle1'], color)
+ self._render_circle(obround.subshapes['circle2'], color)
+ self._render_rectangle(obround.subshapes['rectangle'], color)
- # Vertical obround
- else:
- rectx = xsize
- recty = ysize - xsize
- c1 = self.dwg.circle(center=(x, y - (recty / 2.)),
- r = (xsize / 2.),
- fill=svg_color(color))
-
- c2 = self.dwg.circle(center=(x, y + (recty / 2.)),
- r = (xsize / 2.),
- fill=svg_color(color))
-
- rect = self.dwg.rect(insert=(x, y),
- size=(xsize, ysize),
- fill=svg_color(color))
- c1.fill(opacity=self.alpha)
- c2.fill(opacity=self.alpha)
- rect.fill(opacity=self.alpha)
- self.dwg.add(c1)
- self.dwg.add(c2)
- self.dwg.add(rect)
def _render_drill(self, circle, color):
center = map(mul, circle.position, self.scale)