diff options
Diffstat (limited to 'gerber/render/cairo_backend.py')
| -rw-r--r-- | gerber/render/cairo_backend.py | 111 |
1 files changed, 94 insertions, 17 deletions
diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index 345f331..2b7c2ff 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -17,7 +17,10 @@ from .render import GerberContext
-import cairocffi as cairo
+try:
+ import cairo
+except ImportError:
+ import cairocffi as cairo
from operator import mul
import math
@@ -52,7 +55,7 @@ class GerberCairoContext(GerberContext): end = map(mul, line.end, self.scale)
if isinstance(line.aperture, Circle):
width = line.aperture.diameter
- self.ctx.set_source_rgba(*color, alpha=self.alpha)
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_OVER if (line.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(width * self.scale[0])
self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
@@ -61,7 +64,7 @@ class GerberCairoContext(GerberContext): self.ctx.stroke()
elif isinstance(line.aperture, Rectangle):
points = [tuple(map(mul, x, self.scale)) for x in line.vertices]
- self.ctx.set_source_rgba(*color, alpha=self.alpha)
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_OVER if (line.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(0)
self.ctx.move_to(*points[0])
@@ -76,20 +79,27 @@ class GerberCairoContext(GerberContext): radius = self.scale[0] * arc.radius
angle1 = arc.start_angle
angle2 = arc.end_angle
- width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001
- self.ctx.set_source_rgba(*color, alpha=self.alpha)
+ if angle1 == angle2 and arc.quadrant_mode != 'single-quadrant':
+ # Make the angles slightly different otherwise Cario will draw nothing
+ angle2 -= 0.000000001
+ if isinstance(arc.aperture, Circle):
+ width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001
+ else:
+ width = max(arc.aperture.width, arc.aperture.height, 0.001)
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_OVER if (arc.level_polarity == "dark" and not self.invert)else cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(width * self.scale[0])
self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
self.ctx.move_to(*start) # You actually have to do this...
if arc.direction == 'counterclockwise':
- self.ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2)
+ self.ctx.arc(center[0], center[1], radius, angle1, angle2)
else:
- self.ctx.arc_negative(*center, radius=radius, angle1=angle1, angle2=angle2)
+ self.ctx.arc_negative(center[0], center[1], radius, angle1, angle2)
self.ctx.move_to(*end) # ...lame
+ self.ctx.stroke()
def _render_region(self, region, color):
- self.ctx.set_source_rgba(*color, alpha=self.alpha)
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_OVER if (region.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(0)
self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
@@ -105,35 +115,102 @@ class GerberCairoContext(GerberContext): angle1 = p.start_angle
angle2 = p.end_angle
if p.direction == 'counterclockwise':
- self.ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2)
+ self.ctx.arc(center[0], center[1], radius, angle1, angle2)
else:
- self.ctx.arc_negative(*center, radius=radius, angle1=angle1, angle2=angle2)
+ self.ctx.arc_negative(center[0], center[1], radius, angle1, angle2)
self.ctx.fill()
def _render_circle(self, circle, color):
center = tuple(map(mul, circle.position, self.scale))
- self.ctx.set_source_rgba(*color, alpha=self.alpha)
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_OVER if (circle.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(0)
- self.ctx.arc(*center, radius=circle.radius * self.scale[0], angle1=0, angle2=2 * math.pi)
+ self.ctx.arc(center[0], center[1], circle.radius * self.scale[0], 0, 2 * math.pi)
self.ctx.fill()
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_rgba(*color, alpha=self.alpha)
+
+ if rectangle.rotation != 0:
+ self.ctx.save()
+
+ center = map(mul, rectangle.position, self.scale)
+ matrix = cairo.Matrix()
+ matrix.translate(center[0], center[1])
+ # For drawing, we already handles the translation
+ ll[0] = ll[0] - center[0]
+ ll[1] = ll[1] - center[1]
+ matrix.rotate(rectangle.rotation)
+ self.ctx.transform(matrix)
+
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
self.ctx.set_operator(cairo.OPERATOR_OVER if (rectangle.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
self.ctx.set_line_width(0)
- self.ctx.rectangle(*ll,width=width, height=height)
+ self.ctx.rectangle(ll[0], ll[1], width, height)
self.ctx.fill()
+
+ if rectangle.rotation != 0:
+ self.ctx.restore()
def _render_obround(self, obround, color):
self._render_circle(obround.subshapes['circle1'], color)
self._render_circle(obround.subshapes['circle2'], color)
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)
+ self.ctx.set_operator(cairo.OPERATOR_OVER if (polygon.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
+ self.ctx.set_line_width(0)
+ self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
+
+ # Start from before the end so it is easy to iterate and make sure it is closed
+ self.ctx.move_to(*map(mul, vertices[-1], self.scale))
+ for v in vertices:
+ 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)
+
+ def _render_slot(self, slot, color):
+ start = map(mul, slot.start, self.scale)
+ end = map(mul, slot.end, self.scale)
+
+ width = slot.diameter
+
+ self.ctx.set_source_rgba(color[0], color[1], color[2], self.alpha)
+ self.ctx.set_operator(cairo.OPERATOR_OVER if (slot.level_polarity == "dark" and not self.invert) else cairo.OPERATOR_CLEAR)
+ self.ctx.set_line_width(width * self.scale[0])
+ self.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
+ self.ctx.move_to(*start)
+ self.ctx.line_to(*end)
+ self.ctx.stroke()
+
+ def _render_amgroup(self, amgroup, color):
+ self.ctx.push_group()
+ for primitive in amgroup.primitives:
+ self.render(primitive)
+ self.ctx.pop_group_to_source()
+ self.ctx.paint_with_alpha(1)
def _render_test_record(self, primitive, color):
self.ctx.select_font_face('monospace', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL)
@@ -147,7 +224,7 @@ class GerberCairoContext(GerberContext): self.ctx.scale(1, -1)
def _paint_inverted_layer(self):
- self.ctx.set_source_rgba(*self.background_color)
+ self.ctx.set_source_rgba(self.background_color[0], self.background_color[1], self.background_color[2])
self.ctx.set_operator(cairo.OPERATOR_OVER)
self.ctx.paint()
self.ctx.set_operator(cairo.OPERATOR_CLEAR)
@@ -155,7 +232,7 @@ class GerberCairoContext(GerberContext): def _paint_background(self):
if not self.bg:
self.bg = True
- self.ctx.set_source_rgba(*self.background_color)
+ self.ctx.set_source_rgba(self.background_color[0], self.background_color[1], self.background_color[2])
self.ctx.paint()
def dump(self, filename):
@@ -177,4 +254,4 @@ class GerberCairoContext(GerberContext): self.surface.finish()
self.surface_buffer.flush()
return self.surface_buffer.read()
-
\ No newline at end of file +
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