kopia lustrzana https://gitlab.com/gerbolyze/gerbonara
617 wiersze
28 KiB
Python
617 wiersze
28 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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try:
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import cairo
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except ImportError:
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import cairocffi as cairo
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from operator import mul
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import tempfile
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import copy
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import os
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from .render import GerberContext, RenderSettings
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from .theme import THEMES
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from ..primitives import *
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from ..utils import rotate_point
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from io import BytesIO
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class GerberCairoContext(GerberContext):
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def __init__(self, scale=300):
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super(GerberCairoContext, self).__init__()
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self.scale = (scale, scale)
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self.surface = None
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self.surface_buffer = None
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self.ctx = None
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self.active_layer = None
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self.active_matrix = None
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self.output_ctx = None
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self.has_bg = False
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self.origin_in_inch = None
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self.size_in_inch = None
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self._xform_matrix = None
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self._render_count = 0
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@property
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def origin_in_pixels(self):
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return (self.scale_point(self.origin_in_inch)
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if self.origin_in_inch is not None else (0.0, 0.0))
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@property
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def size_in_pixels(self):
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return (self.scale_point(self.size_in_inch)
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if self.size_in_inch is not None else (0.0, 0.0))
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def set_bounds(self, bounds, new_surface=False):
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origin_in_inch = (bounds[0][0], bounds[1][0])
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size_in_inch = (abs(bounds[0][1] - bounds[0][0]),
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abs(bounds[1][1] - bounds[1][0]))
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size_in_pixels = self.scale_point(size_in_inch)
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self.origin_in_inch = origin_in_inch if self.origin_in_inch is None else self.origin_in_inch
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self.size_in_inch = size_in_inch if self.size_in_inch is None else self.size_in_inch
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self._xform_matrix = cairo.Matrix(xx=1.0, yy=-1.0,
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x0=-self.origin_in_pixels[0],
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y0=self.size_in_pixels[1])
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if (self.surface is None) or new_surface:
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self.surface_buffer = tempfile.NamedTemporaryFile()
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self.surface = cairo.SVGSurface(self.surface_buffer, size_in_pixels[0], size_in_pixels[1])
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self.output_ctx = cairo.Context(self.surface)
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def render_layer(self, layer, filename=None, settings=None, bgsettings=None,
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verbose=False, bounds=None):
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if settings is None:
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settings = THEMES['default'].get(layer.layer_class, RenderSettings())
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if bgsettings is None:
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bgsettings = THEMES['default'].get('background', RenderSettings())
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if self._render_count == 0:
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if verbose:
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print('[Render]: Rendering Background.')
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self.clear()
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if bounds is not None:
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self.set_bounds(bounds)
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else:
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self.set_bounds(layer.bounds)
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self.paint_background(bgsettings)
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if verbose:
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print('[Render]: Rendering {} Layer.'.format(layer.layer_class))
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self._render_count += 1
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self._render_layer(layer, settings)
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if filename is not None:
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self.dump(filename, verbose)
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def render_layers(self, layers, filename, theme=THEMES['default'],
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verbose=False, max_width=800, max_height=600):
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""" Render a set of layers
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"""
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# Calculate scale parameter
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x_range = [10000, -10000]
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y_range = [10000, -10000]
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for layer in layers:
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bounds = layer.bounds
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if bounds is not None:
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layer_x, layer_y = bounds
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x_range[0] = min(x_range[0], layer_x[0])
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x_range[1] = max(x_range[1], layer_x[1])
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y_range[0] = min(y_range[0], layer_y[0])
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y_range[1] = max(y_range[1], layer_y[1])
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width = x_range[1] - x_range[0]
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height = y_range[1] - y_range[0]
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scale = math.floor(min(float(max_width)/width, float(max_height)/height))
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self.scale = (scale, scale)
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self.clear()
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# Render layers
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bgsettings = theme['background']
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for layer in layers:
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settings = theme.get(layer.layer_class, RenderSettings())
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self.render_layer(layer, settings=settings, bgsettings=bgsettings,
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verbose=verbose)
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self.dump(filename, verbose)
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def dump(self, filename=None, verbose=False):
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""" Save image as `filename`
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"""
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try:
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is_svg = os.path.splitext(filename.lower())[1] == '.svg'
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except:
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is_svg = False
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if verbose:
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print('[Render]: Writing image to {}'.format(filename))
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if is_svg:
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self.surface.finish()
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self.surface_buffer.flush()
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with open(filename, "wb") as f:
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self.surface_buffer.seek(0)
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f.write(self.surface_buffer.read())
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f.flush()
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else:
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return self.surface.write_to_png(filename)
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def dump_str(self):
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""" Return a byte-string containing the rendered image.
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"""
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fobj = BytesIO()
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self.surface.write_to_png(fobj)
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return fobj.getvalue()
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def dump_svg_str(self):
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""" Return a string containg the rendered SVG.
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"""
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self.surface.finish()
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self.surface_buffer.flush()
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return self.surface_buffer.read()
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def clear(self):
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self.surface = None
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self.output_ctx = None
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self.has_bg = False
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self.origin_in_inch = None
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self.size_in_inch = None
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self._xform_matrix = None
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self._render_count = 0
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self.surface_buffer = None
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def _new_mask(self):
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class Mask:
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def __enter__(msk):
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size_in_pixels = self.size_in_pixels
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msk.surface = cairo.SVGSurface(None, size_in_pixels[0],
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size_in_pixels[1])
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msk.ctx = cairo.Context(msk.surface)
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msk.ctx.translate(-self.origin_in_pixels[0], -self.origin_in_pixels[1])
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return msk
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def __exit__(msk, exc_type, exc_val, traceback):
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if hasattr(msk.surface, 'finish'):
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msk.surface.finish()
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return Mask()
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def _render_layer(self, layer, settings):
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self.invert = settings.invert
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# Get a new clean layer to render on
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self.new_render_layer(mirror=settings.mirror)
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for prim in layer.primitives:
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self.render(prim)
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# Add layer to image
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self.flatten(settings.color, settings.alpha)
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def _render_line(self, line, color):
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start = self.scale_point(line.start)
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end = self.scale_point(line.end)
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self.ctx.set_operator(cairo.OPERATOR_OVER
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if (not self.invert)
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and line.level_polarity == 'dark'
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else cairo.OPERATOR_CLEAR)
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with self._clip_primitive(line):
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with self._new_mask() as mask:
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if isinstance(line.aperture, Circle):
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width = line.aperture.diameter
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mask.ctx.set_line_width(width * self.scale[0])
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mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
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mask.ctx.move_to(*start)
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mask.ctx.line_to(*end)
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mask.ctx.stroke()
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elif hasattr(line, 'vertices') and line.vertices is not None:
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points = [self.scale_point(x) for x in line.vertices]
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mask.ctx.set_line_width(0)
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mask.ctx.move_to(*points[-1])
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for point in points:
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mask.ctx.line_to(*point)
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mask.ctx.fill()
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self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
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def _render_arc(self, arc, color):
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center = self.scale_point(arc.center)
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start = self.scale_point(arc.start)
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end = self.scale_point(arc.end)
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radius = self.scale[0] * arc.radius
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two_pi = 2 * math.pi
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angle1 = (arc.start_angle + two_pi) % two_pi
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angle2 = (arc.end_angle + two_pi) % two_pi
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if angle1 == angle2 and arc.quadrant_mode != 'single-quadrant':
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# Make the angles slightly different otherwise Cario will draw nothing
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angle2 -= 0.000000001
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if isinstance(arc.aperture, Circle):
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width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001
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else:
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width = max(arc.aperture.width, arc.aperture.height, 0.001)
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self.ctx.set_operator(cairo.OPERATOR_OVER
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if (not self.invert)
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and arc.level_polarity == 'dark'
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else cairo.OPERATOR_CLEAR)
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with self._clip_primitive(arc):
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with self._new_mask() as mask:
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mask.ctx.set_line_width(width * self.scale[0])
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mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND if isinstance(arc.aperture, Circle) else cairo.LINE_CAP_SQUARE)
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mask.ctx.move_to(*start) # You actually have to do this...
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if arc.direction == 'counterclockwise':
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mask.ctx.arc(center[0], center[1], radius, angle1, angle2)
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else:
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mask.ctx.arc_negative(center[0], center[1], radius,
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angle1, angle2)
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mask.ctx.move_to(*end) # ...lame
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mask.ctx.stroke()
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#if isinstance(arc.aperture, Rectangle):
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# print("Flash Rectangle Ends")
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# print(arc.aperture.rotation * 180/math.pi)
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# rect = arc.aperture
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# width = self.scale[0] * rect.width
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# height = self.scale[1] * rect.height
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# for point, angle in zip((start, end), (angle1, angle2)):
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# print("{} w {} h{}".format(point, rect.width, rect.height))
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# mask.ctx.rectangle(point[0] - width/2.0,
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# point[1] - height/2.0, width, height)
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# mask.ctx.fill()
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self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
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def _render_region(self, region, color):
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self.ctx.set_operator(cairo.OPERATOR_OVER
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if (not self.invert) and region.level_polarity == 'dark'
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else cairo.OPERATOR_CLEAR)
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with self._clip_primitive(region):
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with self._new_mask() as mask:
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mask.ctx.set_line_width(0)
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mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
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mask.ctx.move_to(*self.scale_point(region.primitives[0].start))
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for prim in region.primitives:
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if isinstance(prim, Line):
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mask.ctx.line_to(*self.scale_point(prim.end))
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else:
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center = self.scale_point(prim.center)
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radius = self.scale[0] * prim.radius
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angle1 = prim.start_angle
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angle2 = prim.end_angle
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if prim.direction == 'counterclockwise':
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mask.ctx.arc(center[0], center[1], radius,
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angle1, angle2)
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else:
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mask.ctx.arc_negative(center[0], center[1], radius,
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angle1, angle2)
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mask.ctx.fill()
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self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
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def _render_circle(self, circle, color):
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center = self.scale_point(circle.position)
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self.ctx.set_operator(cairo.OPERATOR_OVER
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if (not self.invert)
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and circle.level_polarity == 'dark'
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else cairo.OPERATOR_CLEAR)
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with self._clip_primitive(circle):
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with self._new_mask() as mask:
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mask.ctx.set_line_width(0)
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mask.ctx.arc(center[0], center[1], (circle.radius * self.scale[0]), 0, (2 * math.pi))
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mask.ctx.fill()
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if hasattr(circle, 'hole_diameter') and circle.hole_diameter is not None and circle.hole_diameter > 0:
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mask.ctx.set_operator(cairo.OPERATOR_CLEAR)
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mask.ctx.arc(center[0], center[1], circle.hole_radius * self.scale[0], 0, 2 * math.pi)
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mask.ctx.fill()
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if (hasattr(circle, 'hole_width') and hasattr(circle, 'hole_height')
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and circle.hole_width is not None and circle.hole_height is not None
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and circle.hole_width > 0 and circle.hole_height > 0):
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mask.ctx.set_operator(cairo.OPERATOR_CLEAR
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if circle.level_polarity == 'dark'
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and (not self.invert)
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else cairo.OPERATOR_OVER)
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width, height = self.scale_point((circle.hole_width, circle.hole_height))
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lower_left = rotate_point(
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(center[0] - width / 2.0, center[1] - height / 2.0),
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circle.rotation, center)
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lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0),
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circle.rotation, center)
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upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0),
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circle.rotation, center)
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upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0),
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circle.rotation, center)
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points = (lower_left, lower_right, upper_right, upper_left)
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mask.ctx.move_to(*points[-1])
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for point in points:
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mask.ctx.line_to(*point)
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mask.ctx.fill()
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self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
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def _render_rectangle(self, rectangle, color):
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lower_left = self.scale_point(rectangle.lower_left)
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width, height = tuple([abs(coord) for coord in
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self.scale_point((rectangle.width,
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rectangle.height))])
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self.ctx.set_operator(cairo.OPERATOR_OVER
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if (not self.invert)
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and rectangle.level_polarity == 'dark'
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else cairo.OPERATOR_CLEAR)
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with self._clip_primitive(rectangle):
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with self._new_mask() as mask:
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mask.ctx.set_line_width(0)
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mask.ctx.rectangle(lower_left[0], lower_left[1], width, height)
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mask.ctx.fill()
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center = self.scale_point(rectangle.position)
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if rectangle.hole_diameter > 0:
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# Render the center clear
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mask.ctx.set_operator(cairo.OPERATOR_CLEAR
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if rectangle.level_polarity == 'dark'
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and (not self.invert)
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else cairo.OPERATOR_OVER)
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mask.ctx.arc(center[0], center[1], rectangle.hole_radius * self.scale[0], 0, 2 * math.pi)
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mask.ctx.fill()
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if rectangle.hole_width > 0 and rectangle.hole_height > 0:
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mask.ctx.set_operator(cairo.OPERATOR_CLEAR
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if rectangle.level_polarity == 'dark'
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and (not self.invert)
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else cairo.OPERATOR_OVER)
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width, height = self.scale_point((rectangle.hole_width, rectangle.hole_height))
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lower_left = rotate_point((center[0] - width/2.0, center[1] - height/2.0), rectangle.rotation, center)
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lower_right = rotate_point((center[0] + width/2.0, center[1] - height/2.0), rectangle.rotation, center)
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upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0), rectangle.rotation, center)
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upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0), rectangle.rotation, center)
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points = (lower_left, lower_right, upper_right, upper_left)
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mask.ctx.move_to(*points[-1])
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for point in points:
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mask.ctx.line_to(*point)
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mask.ctx.fill()
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self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
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def _render_obround(self, obround, color):
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self.ctx.set_operator(cairo.OPERATOR_OVER
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if (not self.invert)
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and obround.level_polarity == 'dark'
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else cairo.OPERATOR_CLEAR)
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with self._clip_primitive(obround):
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with self._new_mask() as mask:
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mask.ctx.set_line_width(0)
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# Render circles
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for circle in (obround.subshapes['circle1'], obround.subshapes['circle2']):
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center = self.scale_point(circle.position)
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mask.ctx.arc(center[0], center[1], (circle.radius * self.scale[0]), 0, (2 * math.pi))
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mask.ctx.fill()
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# Render Rectangle
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rectangle = obround.subshapes['rectangle']
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lower_left = self.scale_point(rectangle.lower_left)
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width, height = tuple([abs(coord) for coord in
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self.scale_point((rectangle.width,
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rectangle.height))])
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mask.ctx.rectangle(lower_left[0], lower_left[1], width, height)
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mask.ctx.fill()
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center = self.scale_point(obround.position)
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if obround.hole_diameter > 0:
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# Render the center clear
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mask.ctx.set_operator(cairo.OPERATOR_CLEAR)
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mask.ctx.arc(center[0], center[1], obround.hole_radius * self.scale[0], 0, 2 * math.pi)
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mask.ctx.fill()
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if obround.hole_width > 0 and obround.hole_height > 0:
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mask.ctx.set_operator(cairo.OPERATOR_CLEAR
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if rectangle.level_polarity == 'dark'
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and (not self.invert)
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else cairo.OPERATOR_OVER)
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width, height =self.scale_point((obround.hole_width, obround.hole_height))
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lower_left = rotate_point((center[0] - width / 2.0, center[1] - height / 2.0),
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obround.rotation, center)
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lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0),
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obround.rotation, center)
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upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0),
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obround.rotation, center)
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upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0),
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obround.rotation, center)
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points = (lower_left, lower_right, upper_right, upper_left)
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mask.ctx.move_to(*points[-1])
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for point in points:
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mask.ctx.line_to(*point)
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mask.ctx.fill()
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self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
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|
|
|
def _render_polygon(self, polygon, color):
|
|
self.ctx.set_operator(cairo.OPERATOR_OVER
|
|
if (not self.invert)
|
|
and polygon.level_polarity == 'dark'
|
|
else cairo.OPERATOR_CLEAR)
|
|
with self._clip_primitive(polygon):
|
|
with self._new_mask() as mask:
|
|
|
|
vertices = polygon.vertices
|
|
mask.ctx.set_line_width(0)
|
|
mask.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
|
|
mask.ctx.move_to(*self.scale_point(vertices[-1]))
|
|
for v in vertices:
|
|
mask.ctx.line_to(*self.scale_point(v))
|
|
mask.ctx.fill()
|
|
|
|
center = self.scale_point(polygon.position)
|
|
if polygon.hole_radius > 0:
|
|
# Render the center clear
|
|
mask.ctx.set_operator(cairo.OPERATOR_CLEAR
|
|
if polygon.level_polarity == 'dark'
|
|
and (not self.invert)
|
|
else cairo.OPERATOR_OVER)
|
|
mask.ctx.set_line_width(0)
|
|
mask.ctx.arc(center[0],
|
|
center[1],
|
|
polygon.hole_radius * self.scale[0], 0, 2 * math.pi)
|
|
mask.ctx.fill()
|
|
|
|
if polygon.hole_width > 0 and polygon.hole_height > 0:
|
|
mask.ctx.set_operator(cairo.OPERATOR_CLEAR
|
|
if polygon.level_polarity == 'dark'
|
|
and (not self.invert)
|
|
else cairo.OPERATOR_OVER)
|
|
width, height = self.scale_point((polygon.hole_width, polygon.hole_height))
|
|
lower_left = rotate_point((center[0] - width / 2.0, center[1] - height / 2.0),
|
|
polygon.rotation, center)
|
|
lower_right = rotate_point((center[0] + width / 2.0, center[1] - height / 2.0),
|
|
polygon.rotation, center)
|
|
upper_left = rotate_point((center[0] - width / 2.0, center[1] + height / 2.0),
|
|
polygon.rotation, center)
|
|
upper_right = rotate_point((center[0] + width / 2.0, center[1] + height / 2.0),
|
|
polygon.rotation, center)
|
|
points = (lower_left, lower_right, upper_right, upper_left)
|
|
mask.ctx.move_to(*points[-1])
|
|
for point in points:
|
|
mask.ctx.line_to(*point)
|
|
mask.ctx.fill()
|
|
|
|
self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
|
|
|
|
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_slot(self, slot, color):
|
|
start = map(mul, slot.start, self.scale)
|
|
end = map(mul, slot.end, self.scale)
|
|
|
|
width = slot.diameter
|
|
|
|
self.ctx.set_operator(cairo.OPERATOR_OVER
|
|
if slot.level_polarity == 'dark' and
|
|
(not self.invert) else cairo.OPERATOR_CLEAR)
|
|
with self._clip_primitive(slot):
|
|
with self._new_mask() as mask:
|
|
mask.ctx.set_line_width(width * self.scale[0])
|
|
mask.ctx.set_line_cap(cairo.LINE_CAP_ROUND)
|
|
mask.ctx.move_to(*start)
|
|
mask.ctx.line_to(*end)
|
|
mask.ctx.stroke()
|
|
self.ctx.mask_surface(mask.surface, self.origin_in_pixels[0])
|
|
|
|
def _render_amgroup(self, amgroup, color):
|
|
for primitive in amgroup.primitives:
|
|
self.render(primitive)
|
|
|
|
def _render_test_record(self, primitive, color):
|
|
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_operator(cairo.OPERATOR_OVER
|
|
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)
|
|
|
|
if self.invert:
|
|
ctx.set_source_rgba(0.0, 0.0, 0.0, 1.0)
|
|
ctx.set_operator(cairo.OPERATOR_OVER)
|
|
ctx.paint()
|
|
if mirror:
|
|
matrix.xx = -1.0
|
|
matrix.x0 = self.origin_in_pixels[0] + self.size_in_pixels[0]
|
|
self.ctx = ctx
|
|
self.ctx.set_matrix(matrix)
|
|
self.active_layer = layer
|
|
self.active_matrix = matrix
|
|
|
|
def flatten(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
|
|
self.output_ctx.set_source_rgba(color[0], color[1], color[2], alpha)
|
|
self.output_ctx.mask_surface(self.active_layer)
|
|
self.ctx = None
|
|
self.active_layer = None
|
|
self.active_matrix = None
|
|
|
|
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[0], color[1], color[2], alpha)
|
|
self.output_ctx.paint()
|
|
|
|
def _clip_primitive(self, primitive):
|
|
""" Clip rendering context to pixel-aligned bounding box
|
|
|
|
Calculates pixel- and axis- aligned bounding box, and clips current
|
|
context to that region. Improves rendering speed significantly. This
|
|
returns a context manager, use as follows:
|
|
|
|
with self._clip_primitive(some_primitive):
|
|
do_rendering_stuff()
|
|
do_more_rendering stuff(with, arguments)
|
|
|
|
The context manager will reset the context's clipping region when it
|
|
goes out of scope.
|
|
|
|
"""
|
|
class Clip:
|
|
def __init__(clp, primitive):
|
|
x_range, y_range = primitive.bounding_box
|
|
xmin, xmax = x_range
|
|
ymin, ymax = y_range
|
|
|
|
# Round bounds to the nearest pixel outside of the primitive
|
|
clp.xmin = math.floor(self.scale[0] * xmin)
|
|
clp.xmax = math.ceil(self.scale[0] * xmax)
|
|
|
|
# We need to offset Y to take care of the difference in y-pos
|
|
# caused by flipping the axis.
|
|
clp.ymin = math.floor(
|
|
(self.scale[1] * ymin) - math.ceil(self.origin_in_pixels[1]))
|
|
clp.ymax = math.floor(
|
|
(self.scale[1] * ymax) - math.floor(self.origin_in_pixels[1]))
|
|
|
|
# Calculate width and height, rounded to the nearest pixel
|
|
clp.width = abs(clp.xmax - clp.xmin)
|
|
clp.height = abs(clp.ymax - clp.ymin)
|
|
|
|
def __enter__(clp):
|
|
# Clip current context to primitive's bounding box
|
|
self.ctx.rectangle(clp.xmin, clp.ymin, clp.width, clp.height)
|
|
self.ctx.clip()
|
|
|
|
def __exit__(clp, exc_type, exc_val, traceback):
|
|
# Reset context clip region
|
|
self.ctx.reset_clip()
|
|
|
|
return Clip(primitive)
|
|
|
|
def scale_point(self, point):
|
|
return tuple([coord * scale for coord, scale in zip(point, self.scale)])
|