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#! /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
def convert_color(color):
color = tuple([int(ch * 255) for ch in color])
return 'rgb(%d, %d, %d)' % color
class SvgCircle(Circle):
def line(self, ctx, x, y, color='rgb(184, 115, 51)'):
return ctx.dwg.line(start=(ctx.x * SCALE, -ctx.y * SCALE),
end=(x * SCALE, -y * SCALE),
stroke=color,
stroke_width=SCALE * self.diameter,
stroke_linecap="round")
def arc(self, ctx, x, y, i, j, direction, color='rgb(184, 115, 51)'):
pass
def flash(self, ctx, x, y, color='rgb(184, 115, 51)'):
return [ctx.dwg.circle(center=(x * SCALE, -y * SCALE),
r = SCALE * (self.diameter / 2.0),
fill=color), ]
class SvgRect(Rect):
def line(self, ctx, x, y, color='rgb(184, 115, 51)'):
return ctx.dwg.line(start=(ctx.x * SCALE, -ctx.y * SCALE),
end=(x * SCALE, -y * SCALE),
stroke=color, stroke_width=2,
stroke_linecap="butt")
def flash(self, ctx, x, y, color='rgb(184, 115, 51)'):
xsize, ysize = self.size
return [ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2)),
-SCALE * (y + (ysize / 2))),
size=(SCALE * xsize, SCALE * ysize),
fill=color), ]
class SvgObround(Obround):
def line(self, ctx, x, y, color='rgb(184, 115, 51)'):
pass
def flash(self, ctx, x, y, color='rgb(184, 115, 51)'):
xsize, ysize = self.size
# horizontal obround
if xsize == ysize:
return [ctx.dwg.circle(center=(x * SCALE, -y * SCALE),
r = SCALE * (x / 2.0),
fill=color), ]
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=color)
rcircle = ctx.dwg.circle(center=((x + (rectx / 2.0)) * SCALE,
-y * SCALE),
r = SCALE * (ysize / 2.0),
fill=color)
rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)),
-SCALE * (y + (ysize / 2.))),
size=(SCALE * xsize, SCALE * ysize),
fill=color)
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=color)
ucircle = ctx.dwg.circle(center=(x * SCALE,
(y + (recty / 2.)) * -SCALE),
r = SCALE * (xsize / 2.),
fill=color)
rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)),
-SCALE * (y + (ysize / 2.))),
size=(SCALE * xsize, SCALE * ysize),
fill=color)
return [lcircle, ucircle, rect, ]
class GerberSvgContext(GerberContext):
def __init__(self):
GerberContext.__init__(self)
self.apertures = {}
self.dwg = svgwrite.Drawing()
self.background = False
def set_bounds(self, bounds):
xbounds, ybounds = bounds
size = (SCALE * (xbounds[1] - xbounds[0]), SCALE * (ybounds[1] - ybounds[0]))
if not self.background:
self.dwg.add(self.dwg.rect(insert=(SCALE * xbounds[0],
-SCALE * ybounds[1]),
size=size, fill="black"))
self.background = True
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, i, j):
super(GerberSvgContext, self).stroke(x, y, i, j)
if self.interpolation == 'linear':
self.line(x, y)
elif self.interpolation == 'arc':
self.arc(x, y, i, j)
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
color = (convert_color(self.color) if self.level_polarity == 'dark'
else convert_color(self.background_color))
self.dwg.add(ap.line(self, x, y, color))
self.move(x, y, resolve=False)
def arc(self, x, y, i, j):
super(GerberSvgContext, self).arc(x, y, i, j)
x, y = self.resolve(x, y)
ap = self.apertures.get(self.aperture, None)
if ap is None:
return
#self.dwg.add(ap.arc(self, x, y, i, j, self.direction,
# convert_color(self.color)))
self.move(x, y, resolve=False)
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
color = (convert_color(self.color) if self.level_polarity == 'dark'
else convert_color(self.background_color))
for shape in ap.flash(self, x, y, color):
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=convert_color(self.drill_color))
self.dwg.add(hit)
def dump(self, filename):
self.dwg.saveas(filename)
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