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Diffstat (limited to 'gerber/render/svgwrite_backend.py')
| -rw-r--r-- | gerber/render/svgwrite_backend.py | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/gerber/render/svgwrite_backend.py b/gerber/render/svgwrite_backend.py new file mode 100644 index 0000000..7d5c8fd --- /dev/null +++ b/gerber/render/svgwrite_backend.py @@ -0,0 +1,165 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be> +# Based on render_svg.py by Paulo Henrique Silva <ph.silva@gmail.com> + +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at + +# http://www.apache.org/licenses/LICENSE-2.0 + +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +from .render import GerberContext +from .apertures import Circle, Rect, Obround, Polygon +import svgwrite + +SCALE = 300 + + +class SvgCircle(Circle): + def draw(self, ctx, x, y): + return ctx.dwg.line(start=(ctx.x * SCALE, -ctx.y * SCALE), + end=(x * SCALE, -y * SCALE), + stroke="rgb(184, 115, 51)", + stroke_width=SCALE * self.diameter, + stroke_linecap="round") + + def flash(self, ctx, x, y): + return [ctx.dwg.circle(center=(x * SCALE, -y * SCALE), + r = SCALE * (self.diameter / 2.0), + fill='rgb(184, 115, 51)'), ] + + +class SvgRect(Rect): + def draw(self, ctx, x, y): + return ctx.dwg.line(start=(ctx.x * SCALE, -ctx.y * SCALE), + end=(x * SCALE, -y * SCALE), + stroke="rgb(184, 115, 51)", stroke_width=2, + stroke_linecap="butt") + + def flash(self, ctx, x, y): + xsize, ysize = self.size + return [ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2)), + -SCALE * (y + (ysize / 2))), + size=(SCALE * xsize, SCALE * ysize), + fill="rgb(184, 115, 51)"), ] + + +class SvgObround(Obround): + def draw(self, ctx, x, y): + pass + + def flash(self, ctx, x, y): + xsize, ysize = self.size + + # horizontal obround + if xsize == ysize: + return [ctx.dwg.circle(center=(x * SCALE, -y * SCALE), + r = SCALE * (x / 2.0), + fill='rgb(184, 115, 51)'), ] + if xsize > ysize: + rectx = xsize - ysize + recty = ysize + lcircle = ctx.dwg.circle(center=((x - (rectx / 2.0)) * SCALE, + -y * SCALE), + r = SCALE * (ysize / 2.0), + fill='rgb(184, 115, 51)') + + rcircle = ctx.dwg.circle(center=((x + (rectx / 2.0)) * SCALE, + -y * SCALE), + r = SCALE * (ysize / 2.0), + fill='rgb(184, 115, 51)') + + rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)), + -SCALE * (y + (ysize / 2.))), + size=(SCALE * xsize, SCALE * ysize), + fill='rgb(184, 115, 51)') + return [lcircle, rcircle, rect, ] + + # Vertical obround + else: + rectx = xsize + recty = ysize - xsize + lcircle = ctx.dwg.circle(center=(x * SCALE, + (y - (recty / 2.)) * -SCALE), + r = SCALE * (xsize / 2.), + fill='rgb(184, 115, 51)') + + ucircle = ctx.dwg.circle(center=(x * SCALE, + (y + (recty / 2.)) * -SCALE), + r = SCALE * (xsize / 2.), + fill='rgb(184, 115, 51)') + + rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)), + -SCALE * (y + (ysize / 2.))), + size=(SCALE * xsize, SCALE * ysize), + fill='rgb(184, 115, 51)') + return [lcircle, ucircle, rect, ] + + +class GerberSvgContext(GerberContext): + def __init__(self): + GerberContext.__init__(self) + + self.apertures = {} + self.dwg = svgwrite.Drawing() + #self.dwg.add(self.dwg.rect(insert=(0, 0), size=(2000, 2000), fill="black")) + + def set_bounds(self, bounds): + xbounds, ybounds = bounds + size = (SCALE * (xbounds[1] - xbounds[0]), SCALE * (ybounds[1] - ybounds[0])) + self.dwg.add(self.dwg.rect(insert=(SCALE * xbounds[0], -SCALE * ybounds[1]), size=size, fill="black")) + + def define_aperture(self, d, shape, modifiers): + aperture = None + if shape == 'C': + aperture = SvgCircle(diameter=float(modifiers[0][0])) + elif shape == 'R': + aperture = SvgRect(size=modifiers[0][0:2]) + elif shape == 'O': + aperture = SvgObround(size=modifiers[0][0:2]) + self.apertures[d] = aperture + + def stroke(self, x, y): + super(GerberSvgContext, self).stroke(x, y) + + if self.interpolation == 'linear': + self.line(x, y) + elif self.interpolation == 'arc': + self.arc(x, y) + + def line(self, x, y): + super(GerberSvgContext, self).line(x, y) + x, y = self.resolve(x, y) + ap = self.apertures.get(self.aperture, None) + if ap is None: + return + self.dwg.add(ap.draw(self, x, y)) + self.move(x, y, resolve=False) + + def arc(self, x, y): + super(GerberSvgContext, self).arc(x, y) + + def flash(self, x, y): + super(GerberSvgContext, self).flash(x, y) + x, y = self.resolve(x, y) + ap = self.apertures.get(self.aperture, None) + if ap is None: + return + for shape in ap.flash(self, x, y): + self.dwg.add(shape) + self.move(x, y, resolve=False) + + def drill(self, x, y, diameter): + hit = self.dwg.circle(center=(x*SCALE, -y*SCALE), r=SCALE*(diameter/2.0), fill='gray') + self.dwg.add(hit) + + def dump(self, filename): + self.dwg.saveas(filename) |