diff options
| -rw-r--r-- | examples/cairo_example.png | bin | 2125223 -> 110829 bytes | |||
| -rw-r--r-- | gerber/cam.py | 2 | ||||
| -rw-r--r-- | gerber/render/cairo_backend.py | 23 |
3 files changed, 14 insertions, 11 deletions
diff --git a/examples/cairo_example.png b/examples/cairo_example.png Binary files differindex 723faaf..485586e 100644 --- a/examples/cairo_example.png +++ b/examples/cairo_example.png diff --git a/gerber/cam.py b/gerber/cam.py index 804e366..0a68b23 100644 --- a/gerber/cam.py +++ b/gerber/cam.py @@ -253,8 +253,8 @@ class CamFile(object): filename : string <optional> If provided, save the rendered image to `filename` """ + ctx.set_bounds(self.bounds) ctx._paint_background() - if ctx.invert: ctx._paint_inverted_layer() diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index 16638f5..2791d76 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -31,20 +31,21 @@ class GerberCairoContext(GerberContext): self.scale = (scale, scale)
self.surface = None
self.ctx = None
+ self.bg = False
def set_bounds(self, bounds):
origin_in_inch = (bounds[0][0], bounds[1][0])
size_in_inch = (abs(bounds[0][1] - bounds[0][0]), abs(bounds[1][1] - bounds[1][0]))
size_in_pixels = map(mul, size_in_inch, self.scale)
- self.surface_buffer = tempfile.NamedTemporaryFile()
-
- self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1])
- self.ctx = cairo.Context(self.surface)
- self.ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD)
- self.ctx.scale(1, -1)
- self.ctx.translate(-(origin_in_inch[0] * self.scale[0]), (-origin_in_inch[1]*self.scale[0]) - size_in_pixels[1])
- # self.ctx.translate(-(origin_in_inch[0] * self.scale[0]), -origin_in_inch[1]*self.scale[1])
+ if self.surface is None:
+ self.surface_buffer = tempfile.NamedTemporaryFile()
+ self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1])
+ self.ctx = cairo.Context(self.surface)
+ self.ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD)
+ self.ctx.scale(1, -1)
+ self.ctx.translate(-(origin_in_inch[0] * self.scale[0]), (-origin_in_inch[1]*self.scale[0]) - size_in_pixels[1])
+ # self.ctx.translate(-(origin_in_inch[0] * self.scale[0]), -origin_in_inch[1]*self.scale[1])
def _render_line(self, line, color):
start = map(mul, line.start, self.scale)
@@ -140,8 +141,10 @@ class GerberCairoContext(GerberContext): self.ctx.set_operator(cairo.OPERATOR_CLEAR)
def _paint_background(self):
- self.ctx.set_source_rgba(*self.background_color)
- self.ctx.paint()
+ if not self.bg:
+ self.bg = True
+ self.ctx.set_source_rgba(*self.background_color)
+ self.ctx.paint()
def dump(self, filename):
is_svg = filename.lower().endswith(".svg")
|
