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Add support for polygon apertures

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This commit is contained in:
Garret Fick 2016-06-25 16:46:44 +08:00
parent efcb221fc7
commit ccb6eb7a76
6 changed files with 61 additions and 12 deletions
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15
gerber/render/cairo_backend.py
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@ -159,6 +159,9 @@ class GerberCairoContext(GerberContext):
self._render_rectangle(obround.subshapes['rectangle'], color)
def _render_polygon(self, polygon, color):
if polygon.hole_radius > 0:
self.ctx.push_group()
vertices = polygon.vertices
self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
@ -172,6 +175,18 @@ class GerberCairoContext(GerberContext):
self.ctx.line_to(*map(mul, v, self.scale))
self.ctx.fill()
if polygon.hole_radius > 0:
# Render the center clear
center = tuple(map(mul, polygon.position, self.scale))
self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(0)
self.ctx.arc(center[0], center[1], polygon.hole_radius * self.scale[0], 0, 2 * math.pi)
self.ctx.fill()
self.ctx.pop_group_to_source()
self.ctx.paint_with_alpha(1)
def _render_drill(self, circle, color):
self._render_circle(circle, color)

26
gerber/render/rs274x_backend.py
View file

@ -310,7 +310,7 @@ class Rs274xContext(GerberContext):
self._next_dcode = max(dcode + 1, self._next_dcode)
aper = ADParamStmt.obround(dcode, width, height)
self._obrounds[(width, height)] = aper
self._obrounds[key] = aper
self.header.append(aper)
return aper
@ -320,10 +320,28 @@ class Rs274xContext(GerberContext):
aper = self._get_obround(obround.width, obround.height)
self._render_flash(obround, aper)
pass
def _render_polygon(self, polygon, color):
raise ValueError('Polygons can only exist in the context of aperture macro')
aper = self._get_polygon(polygon.radius, polygon.sides, polygon.rotation, polygon.hole_radius)
self._render_flash(polygon, aper)
def _get_polygon(self, radius, num_vertices, rotation, hole_radius, dcode = None):
key = (radius, num_vertices, rotation, hole_radius)
aper = self._polygons.get(key, None)
if not aper:
if not dcode:
dcode = self._next_dcode
self._next_dcode += 1
else:
self._next_dcode = max(dcode + 1, self._next_dcode)
aper = ADParamStmt.polygon(dcode, radius * 2, num_vertices, rotation, hole_radius * 2)
self._polygons[key] = aper
self.header.append(aper)
return aper
def _render_drill(self, drill, color):
raise ValueError('Drills are not valid in RS274X files')