From 7cd6acf12670f3773113f67ed2acb35cb21c32a0 Mon Sep 17 00:00:00 2001 From: Garret Fick Date: Sun, 24 Jul 2016 17:08:47 +0800 Subject: Add many render tests based on the Umaco gerger specification. Fix multiple rendering bugs, especially related to holes in flashed apertures --- gerber/render/cairo_backend.py | 105 ++++++++++++++++++++++++++++++++--------- 1 file changed, 84 insertions(+), 21 deletions(-) (limited to 'gerber/render/cairo_backend.py') diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index 0cb230b..78ccf34 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -20,13 +20,14 @@ try: except ImportError: import cairocffi as cairo -from operator import mul, div import math +from operator import mul, div import tempfile +from ..primitives import * from .render import GerberContext, RenderSettings from .theme import THEMES -from ..primitives import * + try: from cStringIO import StringIO @@ -219,15 +220,30 @@ class GerberCairoContext(GerberContext): center = tuple(map(mul, circle.position, self.scale)) if not self.invert: ctx = self.ctx - ctx.set_source_rgba(*color, alpha=self.alpha) + ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha) ctx.set_operator(cairo.OPERATOR_OVER if circle.level_polarity == "dark" else cairo.OPERATOR_CLEAR) else: ctx = self.mask_ctx ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) ctx.set_operator(cairo.OPERATOR_CLEAR) + + if circle.hole_diameter > 0: + ctx.push_group() + ctx.set_line_width(0) ctx.arc(center[0], center[1], radius=circle.radius * self.scale[0], angle1=0, angle2=2 * math.pi) - ctx.fill() + ctx.fill() + + if circle.hole_diameter > 0: + # Render the center clear + + ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) + ctx.set_operator(cairo.OPERATOR_CLEAR) + ctx.arc(center[0], center[1], radius=circle.hole_radius * self.scale[0], angle1=0, angle2=2 * math.pi) + ctx.fill() + + ctx.pop_group_to_source() + ctx.paint_with_alpha(1) def _render_rectangle(self, rectangle, color): ll = map(mul, rectangle.lower_left, self.scale) @@ -253,48 +269,95 @@ class GerberCairoContext(GerberContext): ll[1] = ll[1] - center[1] matrix.rotate(rectangle.rotation) ctx.transform(matrix) - + + if rectangle.hole_diameter > 0: + ctx.push_group() + ctx.set_line_width(0) ctx.rectangle(ll[0], ll[1], width, height) ctx.fill() + if rectangle.hole_diameter > 0: + # Render the center clear + ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) + ctx.set_operator(cairo.OPERATOR_CLEAR) + center = map(mul, rectangle.position, self.scale) + ctx.arc(center[0], center[1], radius=rectangle.hole_radius * self.scale[0], angle1=0, angle2=2 * math.pi) + ctx.fill() + + ctx.pop_group_to_source() + ctx.paint_with_alpha(1) + if rectangle.rotation != 0: ctx.restore() def _render_obround(self, obround, color): + + if not self.invert: + ctx = self.ctx + ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha) + ctx.set_operator(cairo.OPERATOR_OVER if obround.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + else: + ctx = self.mask_ctx + ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + ctx.set_operator(cairo.OPERATOR_CLEAR) + + if obround.hole_diameter > 0: + ctx.push_group() + self._render_circle(obround.subshapes['circle1'], color) self._render_circle(obround.subshapes['circle2'], color) self._render_rectangle(obround.subshapes['rectangle'], color) + if obround.hole_diameter > 0: + # Render the center clear + ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) + ctx.set_operator(cairo.OPERATOR_CLEAR) + center = map(mul, obround.position, self.scale) + ctx.arc(center[0], center[1], radius=obround.hole_radius * self.scale[0], angle1=0, angle2=2 * math.pi) + ctx.fill() + + ctx.pop_group_to_source() + ctx.paint_with_alpha(1) + def _render_polygon(self, polygon, color): + + # TODO Ths does not handle rotation of a polygon + if not self.invert: + ctx = self.ctx + ctx.set_source_rgba(color[0], color[1], color[2], alpha=self.alpha) + ctx.set_operator(cairo.OPERATOR_OVER if polygon.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + else: + ctx = self.mask_ctx + ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + ctx.set_operator(cairo.OPERATOR_CLEAR) + if polygon.hole_radius > 0: - self.ctx.push_group() + 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) + + ctx.set_line_width(0) + 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)) + ctx.move_to(*map(mul, vertices[-1], self.scale)) for v in vertices: - self.ctx.line_to(*map(mul, v, self.scale)) + ctx.line_to(*map(mul, v, self.scale)) - self.ctx.fill() + 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() + ctx.set_source_rgba(color[0], color[1], color[2], self.alpha) + ctx.set_operator(cairo.OPERATOR_CLEAR) + ctx.set_line_width(0) + ctx.arc(center[0], center[1], polygon.hole_radius * self.scale[0], 0, 2 * math.pi) + ctx.fill() - self.ctx.pop_group_to_source() - self.ctx.paint_with_alpha(1) + ctx.pop_group_to_source() + ctx.paint_with_alpha(1) def _render_drill(self, circle, color): self._render_circle(circle, color) -- cgit