From 5476da8aa3f4ee424f56f4f2491e7af1c4b7b758 Mon Sep 17 00:00:00 2001 From: Hamilton Kibbe Date: Thu, 21 Jan 2016 03:57:44 -0500 Subject: Fix a bunch of rendering bugs. - 'clear' polarity primitives no longer erase background - Added aperture macro support for polygons - Added aperture macro rendring support - Renderer now creates a new surface for each layer and merges them instead of working directly on a single surface - Updated examples accordingly --- gerber/render/cairo_backend.py | 255 +++++++++++++++++++++++------------------ 1 file changed, 141 insertions(+), 114 deletions(-) (limited to 'gerber/render/cairo_backend.py') diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index 4e71e75..cc2722a 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -17,8 +17,6 @@ import cairocffi as cairo -from operator import mul -import math import tempfile from .render import GerberContext, RenderSettings @@ -32,11 +30,14 @@ except(ImportError): class GerberCairoContext(GerberContext): + def __init__(self, scale=300): - GerberContext.__init__(self) + super(GerberCairoContext, self).__init__() self.scale = (scale, scale) self.surface = None self.ctx = None + self.active_layer = None + self.output_ctx = None self.bg = False self.mask = None self.mask_ctx = None @@ -46,37 +47,40 @@ class GerberCairoContext(GerberContext): @property def origin_in_pixels(self): - return tuple(map(mul, self.origin_in_inch, self.scale)) if self.origin_in_inch is not None else (0.0, 0.0) + return (self.scale_point(self.origin_in_inch) + if self.origin_in_inch is not None else (0.0, 0.0)) @property def size_in_pixels(self): - return tuple(map(mul, self.size_in_inch, self.scale)) if self.size_in_inch is not None else (0.0, 0.0) + return (self.scale_point(self.size_in_inch) + if self.size_in_inch is not None else (0.0, 0.0)) def set_bounds(self, bounds, new_surface=False): 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 = tuple(map(mul, size_in_inch, self.scale)) + size_in_inch = (abs(bounds[0][1] - bounds[0][0]), + abs(bounds[1][1] - bounds[1][0])) + size_in_pixels = self.scale_point(size_in_inch) self.origin_in_inch = origin_in_inch if self.origin_in_inch is None else self.origin_in_inch self.size_in_inch = size_in_inch if self.size_in_inch is None else self.size_in_inch if (self.surface is None) or new_surface: 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.mask = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1]) - self.mask_ctx = cairo.Context(self.mask) - self.mask_ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD) - self.mask_ctx.scale(1, -1) - self.mask_ctx.translate(-(origin_in_inch[0] * self.scale[0]), (-origin_in_inch[1]*self.scale[0]) - size_in_pixels[1]) - self._xform_matrix = cairo.Matrix(xx=1.0, yy=-1.0, x0=-self.origin_in_pixels[0], y0=self.size_in_pixels[1] + self.origin_in_pixels[1]) + self.surface = cairo.SVGSurface( + self.surface_buffer, size_in_pixels[0], size_in_pixels[1]) + self.output_ctx = cairo.Context(self.surface) + self.output_ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD) + self.output_ctx.scale(1, -1) + self.output_ctx.translate(-(origin_in_inch[0] * self.scale[0]), + (-origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) + self._xform_matrix = cairo.Matrix(xx=1.0, yy=-1.0, + x0=-self.origin_in_pixels[0], + y0=self.size_in_pixels[1] + self.origin_in_pixels[1]) def render_layers(self, layers, filename, theme=THEMES['default']): """ Render a set of layers """ self.set_bounds(layers[0].bounds, True) self._paint_background(True) + for layer in layers: self._render_layer(layer, theme) self.dump(filename) @@ -114,158 +118,181 @@ class GerberCairoContext(GerberContext): self.color = settings.color self.alpha = settings.alpha self.invert = settings.invert + + # Get a new clean layer to render on + self._new_render_layer() if settings.mirror: raise Warning('mirrored layers aren\'t supported yet...') - if self.invert: - self._clear_mask() for prim in layer.primitives: self.render(prim) - if self.invert: - self._render_mask() + # Add layer to image + self._flatten() def _render_line(self, line, color): - start = map(mul, line.start, self.scale) - end = map(mul, line.end, self.scale) + start = [pos * scale for pos, scale in zip(line.start, self.scale)] + end = [pos * scale for pos, scale in zip(line.end, self.scale)] if not self.invert: - ctx = self.ctx - ctx.set_source_rgba(*color, alpha=self.alpha) - ctx.set_operator(cairo.OPERATOR_OVER if line.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + self.ctx.set_source_rgba(*color, alpha=self.alpha) + self.ctx.set_operator(cairo.OPERATOR_OVER + if line.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) + self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + self.ctx.set_operator(cairo.OPERATOR_CLEAR) if isinstance(line.aperture, Circle): width = line.aperture.diameter - ctx.set_line_width(width * self.scale[0]) - ctx.set_line_cap(cairo.LINE_CAP_ROUND) - ctx.move_to(*start) - ctx.line_to(*end) - ctx.stroke() + 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() elif isinstance(line.aperture, Rectangle): - points = [tuple(map(mul, x, self.scale)) for x in line.vertices] - ctx.set_line_width(0) - ctx.move_to(*points[0]) + points = [self.scale_point(x) for x in line.vertices] + self.ctx.set_line_width(0) + self.ctx.move_to(*points[0]) for point in points[1:]: - ctx.line_to(*point) - ctx.fill() + self.ctx.line_to(*point) + self.ctx.fill() def _render_arc(self, arc, color): - center = map(mul, arc.center, self.scale) - start = map(mul, arc.start, self.scale) - end = map(mul, arc.end, self.scale) + center = self.scale_point(arc.center) + start = self.scale_point(arc.start) + end = self.scale_point(arc.end) 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 if not self.invert: - ctx = self.ctx - ctx.set_source_rgba(*color, alpha=self.alpha) - ctx.set_operator(cairo.OPERATOR_OVER if arc.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + self.ctx.set_source_rgba(*color, alpha=self.alpha) + self.ctx.set_operator(cairo.OPERATOR_OVER + if arc.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) - ctx.set_line_width(width * self.scale[0]) - ctx.set_line_cap(cairo.LINE_CAP_ROUND) - ctx.move_to(*start) # You actually have to do this... + self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + self.ctx.set_operator(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': - ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2) + self.ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2) else: - ctx.arc_negative(*center, radius=radius, angle1=angle1, angle2=angle2) - ctx.move_to(*end) # ...lame + self.ctx.arc_negative(*center, radius=radius, + angle1=angle1, angle2=angle2) + self.ctx.move_to(*end) # ...lame def _render_region(self, region, color): if not self.invert: - ctx = self.ctx - ctx.set_source_rgba(*color, alpha=self.alpha) - ctx.set_operator(cairo.OPERATOR_OVER if region.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + self.ctx.set_source_rgba(*color, alpha=self.alpha) + self.ctx.set_operator(cairo.OPERATOR_OVER + if region.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) - ctx.set_line_width(0) - ctx.set_line_cap(cairo.LINE_CAP_ROUND) - ctx.move_to(*tuple(map(mul, region.primitives[0].start, self.scale))) - for p in region.primitives: - if isinstance(p, Line): - ctx.line_to(*tuple(map(mul, p.end, self.scale))) + self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + self.ctx.set_operator(cairo.OPERATOR_CLEAR) + self.ctx.set_line_width(0) + self.ctx.set_line_cap(cairo.LINE_CAP_ROUND) + self.ctx.move_to(*self.scale_point(region.primitives[0].start)) + for prim in region.primitives: + if isinstance(prim, Line): + self.ctx.line_to(*self.scale_point(prim.end)) else: - center = map(mul, p.center, self.scale) - start = map(mul, p.start, self.scale) - end = map(mul, p.end, self.scale) - radius = self.scale[0] * p.radius - angle1 = p.start_angle - angle2 = p.end_angle - if p.direction == 'counterclockwise': - ctx.arc(*center, radius=radius, angle1=angle1, angle2=angle2) + center = self.scale_point(prim.center) + radius = self.scale[0] * prim.radius + angle1 = prim.start_angle + angle2 = prim.end_angle + if prim.direction == 'counterclockwise': + self.ctx.arc(*center, radius=radius, + angle1=angle1, angle2=angle2) else: - ctx.arc_negative(*center, radius=radius, angle1=angle1, angle2=angle2) - ctx.fill() + self.ctx.arc_negative(*center, radius=radius, + angle1=angle1, angle2=angle2) + self.ctx.fill() def _render_circle(self, circle, color): - center = tuple(map(mul, circle.position, self.scale)) + center = self.scale_point(circle.position) if not self.invert: - ctx = self.ctx - ctx.set_source_rgba(*color, alpha=self.alpha) - ctx.set_operator(cairo.OPERATOR_OVER if circle.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + self.ctx.set_source_rgba(*color, alpha=self.alpha) + self.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) - ctx.set_line_width(0) - ctx.arc(*center, radius=circle.radius * self.scale[0], angle1=0, angle2=2 * math.pi) - ctx.fill() + self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + self.ctx.set_operator(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.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))) + lower_left = self.scale_point(rectangle.lower_left) + width, height = tuple([abs(coord) for coord in self.scale_point((rectangle.width, rectangle.height))]) + if not self.invert: - ctx = self.ctx - ctx.set_source_rgba(*color, alpha=self.alpha) - ctx.set_operator(cairo.OPERATOR_OVER if rectangle.level_polarity == "dark" else cairo.OPERATOR_CLEAR) + self.ctx.set_source_rgba(*color, alpha=self.alpha) + self.ctx.set_operator( + cairo.OPERATOR_OVER if rectangle.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) - ctx.set_line_width(0) - ctx.rectangle(*ll, width=width, height=height) - ctx.fill() + self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) + self.ctx.set_operator(cairo.OPERATOR_CLEAR) + self.ctx.set_line_width(0) + self.ctx.rectangle(*lower_left, width=width, height=height) + self.ctx.fill() 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_drill(self, circle, color): + def _render_drill(self, circle, color=None): + color = color if color is not None else self.drill_color self._render_circle(circle, color) def _render_test_record(self, primitive, color): - position = tuple(map(add, primitive.position, self.origin_in_inch)) + position = [pos + origin for pos, origin in zip(primitive.position, self.origin_in_inch)] self.ctx.set_operator(cairo.OPERATOR_OVER) - self.ctx.select_font_face('monospace', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD) + self.ctx.select_font_face( + 'monospace', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD) self.ctx.set_font_size(13) self._render_circle(Circle(position, 0.015), color) self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator(cairo.OPERATOR_OVER if primitive.level_polarity == "dark" else cairo.OPERATOR_CLEAR) - self.ctx.move_to(*[self.scale[0] * (coord + 0.015) for coord in position]) + self.ctx.set_operator( + cairo.OPERATOR_OVER if primitive.level_polarity == 'dark' else cairo.OPERATOR_CLEAR) + self.ctx.move_to(*[self.scale[0] * (coord + 0.015) + for coord in position]) self.ctx.scale(1, -1) self.ctx.show_text(primitive.net_name) self.ctx.scale(1, -1) - def _clear_mask(self): - self.mask_ctx.set_operator(cairo.OPERATOR_OVER) - self.mask_ctx.set_source_rgba(*self.color, alpha=self.alpha) - self.mask_ctx.paint() + def _new_render_layer(self, color=None): + size_in_pixels = self.scale_point(self.size_in_inch) + layer = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1]) + ctx = cairo.Context(layer) + ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD) + ctx.scale(1, -1) + ctx.translate(-(self.origin_in_inch[0] * self.scale[0]), + (-self.origin_in_inch[1] * self.scale[0]) + - size_in_pixels[1]) + if self.invert: + ctx.set_operator(cairo.OPERATOR_OVER) + ctx.set_source_rgba(*self.color, alpha=self.alpha) + ctx.paint() + self.ctx = ctx + self.active_layer = layer - def _render_mask(self): - self.ctx.set_operator(cairo.OPERATOR_OVER) - ptn = cairo.SurfacePattern(self.mask) + def _flatten(self): + self.output_ctx.set_operator(cairo.OPERATOR_OVER) + ptn = cairo.SurfacePattern(self.active_layer) ptn.set_matrix(self._xform_matrix) - self.ctx.set_source(ptn) - self.ctx.paint() + self.output_ctx.set_source(ptn) + self.output_ctx.paint() + self.ctx = None + self.active_layer = None def _paint_background(self, force=False): if (not self.bg) or force: self.bg = True - self.ctx.set_source_rgba(*self.background_color, alpha=1.0) - self.ctx.paint() + self.output_ctx.set_operator(cairo.OPERATOR_OVER) + self.output_ctx.set_source_rgba(*self.background_color, alpha=1.0) + self.output_ctx.paint() + + def scale_point(self, point): + return tuple([coord * scale for coord, scale in zip(point, self.scale)]) -- cgit From 66a0d09e72b078da5820820aa5c6a2a7d7430507 Mon Sep 17 00:00:00 2001 From: Hamilton Kibbe Date: Thu, 21 Jan 2016 04:39:55 -0500 Subject: Add support for mirrored rendering - The default theme now renders the bottom layers mirrored. - see https://github.com/curtacircuitos/pcb-tools/blob/master/examples/pcb_bottom.png for an example. --- gerber/render/cairo_backend.py | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) (limited to 'gerber/render/cairo_backend.py') diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index cc2722a..2370eb9 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -18,6 +18,7 @@ import cairocffi as cairo import tempfile +import copy from .render import GerberContext, RenderSettings from .theme import THEMES @@ -37,6 +38,7 @@ class GerberCairoContext(GerberContext): self.surface = None self.ctx = None self.active_layer = None + self.active_matrix = None self.output_ctx = None self.bg = False self.mask = None @@ -120,9 +122,7 @@ class GerberCairoContext(GerberContext): self.invert = settings.invert # Get a new clean layer to render on - self._new_render_layer() - if settings.mirror: - raise Warning('mirrored layers aren\'t supported yet...') + self._new_render_layer(mirror=settings.mirror) for prim in layer.primitives: self.render(prim) # Add layer to image @@ -262,30 +262,35 @@ class GerberCairoContext(GerberContext): self.ctx.show_text(primitive.net_name) self.ctx.scale(1, -1) - def _new_render_layer(self, color=None): + def _new_render_layer(self, color=None, mirror=False): size_in_pixels = self.scale_point(self.size_in_inch) layer = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1]) ctx = cairo.Context(layer) ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD) ctx.scale(1, -1) ctx.translate(-(self.origin_in_inch[0] * self.scale[0]), - (-self.origin_in_inch[1] * self.scale[0]) - - size_in_pixels[1]) + (-self.origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) if self.invert: ctx.set_operator(cairo.OPERATOR_OVER) ctx.set_source_rgba(*self.color, alpha=self.alpha) ctx.paint() + matrix = copy.copy(self._xform_matrix) + if mirror: + matrix.xx = -1.0 + matrix.x0 = self.origin_in_pixels[0] + self.size_in_pixels[0] self.ctx = ctx self.active_layer = layer + self.active_matrix = matrix def _flatten(self): self.output_ctx.set_operator(cairo.OPERATOR_OVER) ptn = cairo.SurfacePattern(self.active_layer) - ptn.set_matrix(self._xform_matrix) + ptn.set_matrix(self.active_matrix) self.output_ctx.set_source(ptn) self.output_ctx.paint() self.ctx = None self.active_layer = None + self.active_matrix = None def _paint_background(self, force=False): if (not self.bg) or force: -- cgit From 5df38c014fd09792995b2b12b1982c535c962c9a Mon Sep 17 00:00:00 2001 From: Hamilton Kibbe Date: Thu, 28 Jan 2016 12:19:03 -0500 Subject: Cleanup, rendering fixes. fixed rendering of tented vias fixed rendering of semi-transparent layers fixed file type detection issues added some examples --- gerber/render/cairo_backend.py | 172 +++++++++++++++++++++-------------------- 1 file changed, 90 insertions(+), 82 deletions(-) (limited to 'gerber/render/cairo_backend.py') diff --git a/gerber/render/cairo_backend.py b/gerber/render/cairo_backend.py index 2370eb9..df4fcf1 100644 --- a/gerber/render/cairo_backend.py +++ b/gerber/render/cairo_backend.py @@ -17,6 +17,7 @@ import cairocffi as cairo +import os import tempfile import copy @@ -36,16 +37,16 @@ class GerberCairoContext(GerberContext): super(GerberCairoContext, self).__init__() self.scale = (scale, scale) self.surface = None + self.surface_buffer = None self.ctx = None self.active_layer = None self.active_matrix = None self.output_ctx = None - self.bg = False - self.mask = None - self.mask_ctx = None + self.has_bg = False self.origin_in_inch = None self.size_in_inch = None self._xform_matrix = None + self._render_count = 0 @property def origin_in_pixels(self): @@ -66,10 +67,8 @@ class GerberCairoContext(GerberContext): self.size_in_inch = size_in_inch if self.size_in_inch is None else self.size_in_inch if (self.surface is None) or new_surface: self.surface_buffer = tempfile.NamedTemporaryFile() - self.surface = cairo.SVGSurface( - self.surface_buffer, size_in_pixels[0], size_in_pixels[1]) + self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1]) self.output_ctx = cairo.Context(self.surface) - self.output_ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD) self.output_ctx.scale(1, -1) self.output_ctx.translate(-(origin_in_inch[0] * self.scale[0]), (-origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) @@ -77,20 +76,44 @@ class GerberCairoContext(GerberContext): x0=-self.origin_in_pixels[0], y0=self.size_in_pixels[1] + self.origin_in_pixels[1]) - def render_layers(self, layers, filename, theme=THEMES['default']): + def render_layer(self, layer, filename=None, settings=None, bgsettings=None, + verbose=False): + if settings is None: + settings = THEMES['default'].get(layer.layer_class, RenderSettings()) + if bgsettings is None: + bgsettings = THEMES['default'].get('background', RenderSettings()) + + if self._render_count == 0: + if verbose: + print('[Render]: Rendering Background.') + self.clear() + self.set_bounds(layer.bounds) + self._paint_background(bgsettings) + if verbose: + print('[Render]: Rendering {} Layer.'.format(layer.layer_class)) + self._render_count += 1 + self._render_layer(layer, settings) + if filename is not None: + self.dump(filename, verbose) + + def render_layers(self, layers, filename, theme=THEMES['default'], + verbose=False): """ Render a set of layers """ - self.set_bounds(layers[0].bounds, True) - self._paint_background(True) - + self.clear() + bgsettings = theme['background'] for layer in layers: - self._render_layer(layer, theme) - self.dump(filename) + settings = theme.get(layer.layer_class, RenderSettings()) + self.render_layer(layer, settings=settings, bgsettings=bgsettings, + verbose=verbose) + self.dump(filename, verbose) - def dump(self, filename): + def dump(self, filename, verbose=False): """ Save image as `filename` """ - is_svg = filename.lower().endswith(".svg") + is_svg = os.path.splitext(filename.lower())[1] == '.svg' + if verbose: + print('[Render]: Writing image to {}'.format(filename)) if is_svg: self.surface.finish() self.surface_buffer.flush() @@ -115,30 +138,33 @@ class GerberCairoContext(GerberContext): self.surface_buffer.flush() return self.surface_buffer.read() - def _render_layer(self, layer, theme=THEMES['default']): - settings = theme.get(layer.layer_class, RenderSettings()) - self.color = settings.color - self.alpha = settings.alpha - self.invert = settings.invert + def clear(self): + self.surface = None + self.output_ctx = None + self.has_bg = False + self.origin_in_inch = None + self.size_in_inch = None + self._xform_matrix = None + self._render_count = 0 + if hasattr(self.surface_buffer, 'close'): + self.surface_buffer.close() + self.surface_buffer = None + def _render_layer(self, layer, settings): + self.invert = settings.invert # Get a new clean layer to render on self._new_render_layer(mirror=settings.mirror) for prim in layer.primitives: self.render(prim) # Add layer to image - self._flatten() + self._paint(settings.color, settings.alpha) def _render_line(self, line, color): start = [pos * scale for pos, scale in zip(line.start, self.scale)] end = [pos * scale for pos, scale in zip(line.end, self.scale)] - if not self.invert: - self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator(cairo.OPERATOR_OVER - if line.level_polarity == 'dark' - else cairo.OPERATOR_CLEAR) - else: - self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) + self.ctx.set_operator(cairo.OPERATOR_SOURCE + if line.level_polarity == 'dark' and + (not self.invert) else cairo.OPERATOR_CLEAR) if isinstance(line.aperture, Circle): width = line.aperture.diameter self.ctx.set_line_width(width * self.scale[0]) @@ -162,14 +188,9 @@ class GerberCairoContext(GerberContext): angle1 = arc.start_angle angle2 = arc.end_angle width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001 - if not self.invert: - self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator(cairo.OPERATOR_OVER - if arc.level_polarity == 'dark' - else cairo.OPERATOR_CLEAR) - else: - self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) + self.ctx.set_operator(cairo.OPERATOR_SOURCE + 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... @@ -181,14 +202,9 @@ class GerberCairoContext(GerberContext): self.ctx.move_to(*end) # ...lame def _render_region(self, region, color): - if not self.invert: - self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator(cairo.OPERATOR_OVER - if region.level_polarity == 'dark' - else cairo.OPERATOR_CLEAR) - else: - self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) + self.ctx.set_operator(cairo.OPERATOR_SOURCE + 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) self.ctx.move_to(*self.scale_point(region.primitives[0].start)) @@ -210,29 +226,22 @@ class GerberCairoContext(GerberContext): def _render_circle(self, circle, color): center = self.scale_point(circle.position) - if not self.invert: - self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator( - cairo.OPERATOR_OVER if circle.level_polarity == 'dark' else cairo.OPERATOR_CLEAR) - else: - self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) + self.ctx.set_operator(cairo.OPERATOR_SOURCE + 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, radius=(circle.radius * self.scale[0]), angle1=0, + angle2=(2 * math.pi)) self.ctx.fill() def _render_rectangle(self, rectangle, color): lower_left = self.scale_point(rectangle.lower_left) - width, height = tuple([abs(coord) for coord in self.scale_point((rectangle.width, rectangle.height))]) - - if not self.invert: - self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator( - cairo.OPERATOR_OVER if rectangle.level_polarity == 'dark' else cairo.OPERATOR_CLEAR) - else: - self.ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0) - self.ctx.set_operator(cairo.OPERATOR_CLEAR) + width, height = tuple([abs(coord) for coord in + self.scale_point((rectangle.width, + rectangle.height))]) + self.ctx.set_operator(cairo.OPERATOR_SOURCE + if rectangle.level_polarity == 'dark' and + (not self.invert) else cairo.OPERATOR_CLEAR) self.ctx.set_line_width(0) self.ctx.rectangle(*lower_left, width=width, height=height) self.ctx.fill() @@ -247,34 +256,31 @@ class GerberCairoContext(GerberContext): self._render_circle(circle, color) def _render_test_record(self, primitive, color): - position = [pos + origin for pos, origin in zip(primitive.position, self.origin_in_inch)] - self.ctx.set_operator(cairo.OPERATOR_OVER) + position = [pos + origin for pos, origin in + zip(primitive.position, self.origin_in_inch)] self.ctx.select_font_face( 'monospace', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD) self.ctx.set_font_size(13) self._render_circle(Circle(position, 0.015), color) - self.ctx.set_source_rgba(*color, alpha=self.alpha) - self.ctx.set_operator( - cairo.OPERATOR_OVER if primitive.level_polarity == 'dark' else cairo.OPERATOR_CLEAR) - self.ctx.move_to(*[self.scale[0] * (coord + 0.015) - for coord in position]) + self.ctx.set_operator(cairo.OPERATOR_SOURCE + if primitive.level_polarity == 'dark' and + (not self.invert) else cairo.OPERATOR_CLEAR) + self.ctx.move_to(*[self.scale[0] * (coord + 0.015) for coord in position]) self.ctx.scale(1, -1) self.ctx.show_text(primitive.net_name) self.ctx.scale(1, -1) def _new_render_layer(self, color=None, mirror=False): size_in_pixels = self.scale_point(self.size_in_inch) + matrix = copy.copy(self._xform_matrix) layer = cairo.SVGSurface(None, size_in_pixels[0], size_in_pixels[1]) ctx = cairo.Context(layer) - ctx.set_fill_rule(cairo.FILL_RULE_EVEN_ODD) ctx.scale(1, -1) ctx.translate(-(self.origin_in_inch[0] * self.scale[0]), - (-self.origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) + (-self.origin_in_inch[1] * self.scale[0]) - size_in_pixels[1]) if self.invert: ctx.set_operator(cairo.OPERATOR_OVER) - ctx.set_source_rgba(*self.color, alpha=self.alpha) ctx.paint() - matrix = copy.copy(self._xform_matrix) if mirror: matrix.xx = -1.0 matrix.x0 = self.origin_in_pixels[0] + self.size_in_pixels[0] @@ -282,21 +288,23 @@ class GerberCairoContext(GerberContext): self.active_layer = layer self.active_matrix = matrix - def _flatten(self): - self.output_ctx.set_operator(cairo.OPERATOR_OVER) + def _paint(self, color=None, alpha=None): + color = color if color is not None else self.color + alpha = alpha if alpha is not None else self.alpha ptn = cairo.SurfacePattern(self.active_layer) ptn.set_matrix(self.active_matrix) - self.output_ctx.set_source(ptn) - self.output_ctx.paint() + self.output_ctx.set_source_rgba(*color, alpha=alpha) + self.output_ctx.mask(ptn) self.ctx = None self.active_layer = None self.active_matrix = None - def _paint_background(self, force=False): - if (not self.bg) or force: - self.bg = True - self.output_ctx.set_operator(cairo.OPERATOR_OVER) - self.output_ctx.set_source_rgba(*self.background_color, alpha=1.0) + def _paint_background(self, settings=None): + color = settings.color if settings is not None else self.background_color + alpha = settings.alpha if settings is not None else 1.0 + if not self.has_bg: + self.has_bg = True + self.output_ctx.set_source_rgba(*color, alpha=alpha) self.output_ctx.paint() def scale_point(self, point): -- cgit