130 lines
5.2 KiB
Python
130 lines
5.2 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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# Based on render_svg.py by Paulo Henrique Silva <ph.silva@gmail.com>
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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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from .render import GerberContext
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from operator import mul
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import math
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import svgwrite
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from ..primitives import *
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SCALE = 400.
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def svg_color(color):
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color = tuple([int(ch * 255) for ch in color])
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return 'rgb(%d, %d, %d)' % color
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class GerberSvgContext(GerberContext):
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def __init__(self):
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GerberContext.__init__(self)
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self.scale = (SCALE, -SCALE)
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self.dwg = svgwrite.Drawing()
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self.background = False
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def dump(self, filename):
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self.dwg.saveas(filename)
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def set_bounds(self, bounds):
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xbounds, ybounds = bounds
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size = (SCALE * (xbounds[1] - xbounds[0]),
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SCALE * (ybounds[1] - ybounds[0]))
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if not self.background:
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vbox = '%f, %f, %f, %f' % (SCALE * xbounds[0], -SCALE * ybounds[1],
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size[0], size[1])
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self.dwg = svgwrite.Drawing(viewBox=vbox)
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rect = self.dwg.rect(insert=(SCALE * xbounds[0],
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-SCALE * ybounds[1]),
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size=size,
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fill=svg_color(self.background_color))
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self.dwg.add(rect)
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self.background = True
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def _render_line(self, line, color):
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start = map(mul, line.start, self.scale)
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end = map(mul, line.end, self.scale)
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if isinstance(line.aperture, Circle):
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width = line.aperture.diameter if line.aperture.diameter != 0 else 0.001
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aline = self.dwg.line(start=start, end=end,
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stroke=svg_color(color),
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stroke_width=SCALE * width,
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stroke_linecap='round')
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aline.stroke(opacity=self.alpha)
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self.dwg.add(aline)
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elif isinstance(line.aperture, Rectangle):
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points = [tuple(map(mul, point, self.scale)) for point in line.vertices]
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path = self.dwg.path(d='M %f, %f' % points[0],
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fill=svg_color(color),
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stroke='none')
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path.fill(opacity=self.alpha)
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for point in points[1:]:
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path.push('L %f, %f' % point)
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self.dwg.add(path)
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def _render_arc(self, arc, color):
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start = tuple(map(mul, arc.start, self.scale))
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end = tuple(map(mul, arc.end, self.scale))
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radius = SCALE * arc.radius
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width = arc.aperture.diameter if arc.aperture.diameter != 0 else 0.001
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arc_path = self.dwg.path(d='M %f, %f' % start,
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stroke=svg_color(color),
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stroke_width=SCALE * width)
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large_arc = arc.sweep_angle >= 2 * math.pi
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direction = '-' if arc.direction == 'clockwise' else '+'
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arc_path.push_arc(end, 0, radius, large_arc, direction, True)
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self.dwg.add(arc_path)
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def _render_region(self, region, color):
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points = [tuple(map(mul, point, self.scale)) for point in region.points]
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region_path = self.dwg.path(d='M %f, %f' % points[0],
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fill=svg_color(color),
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stroke='none')
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region_path.fill(opacity=self.alpha)
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for point in points[1:]:
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region_path.push('L %f, %f' % point)
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self.dwg.add(region_path)
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def _render_circle(self, circle, color):
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center = map(mul, circle.position, self.scale)
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acircle = self.dwg.circle(center=center,
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r = SCALE * circle.radius,
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fill=svg_color(color))
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acircle.fill(opacity=self.alpha)
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self.dwg.add(acircle)
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def _render_rectangle(self, rectangle, color):
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center = tuple(map(mul, rectangle.position, self.scale))
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size = tuple(map(mul, (rectangle.width, rectangle.height), map(abs, self.scale)))
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insert = center[0] - size[0] / 2., center[1] - size[1] / 2.
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arect = self.dwg.rect(insert=insert, size=size,
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fill=svg_color(color))
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arect.fill(opacity=self.alpha)
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self.dwg.add(arect)
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def _render_obround(self, obround, color):
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self._render_circle(obround.subshapes['circle1'], color)
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self._render_circle(obround.subshapes['circle2'], color)
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self._render_rectangle(obround.subshapes['rectangle'], color)
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def _render_drill(self, circle, color):
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center = map(mul, circle.position, self.scale)
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hit = self.dwg.circle(center=center, r=SCALE * circle.radius,
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fill=svg_color(color))
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self.dwg.add(hit)
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