156 lines
No EOL
5.5 KiB
Python
156 lines
No EOL
5.5 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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from .render import GerberContext
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from .apertures import Circle, Rect, Obround, Polygon
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import cairo
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import math
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SCALE = 200.
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class CairoCircle(Circle):
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def line(self, ctx, x, y, color=(184/255., 115/255., 51/255.)):
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ctx.set_source_rgb (*color)
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ctx.set_line_width(self.diameter * SCALE)
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ctx.set_line_cap(cairo.LINE_CAP_ROUND)
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ctx.line_to(x * SCALE, y * SCALE)
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ctx.stroke()
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def arc(self, ctx, x, y, i, j, direction, color=(184/255., 115/255., 51/255.)):
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ctx_x, ctx_y = ctx.get_current_point()
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# Do the math
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center = ((x + i) * SCALE, (y + j) * SCALE)
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radius = math.sqrt(math.pow(ctx_x - center[0], 2) + math.pow(ctx_y - center[1], 2))
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delta_x0 = (ctx_x - center[0])
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delta_y0 = (ctx_y - center[1])
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delta_x1 = (x * SCALE - center[0])
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delta_y1 = (y * SCALE - center[1])
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theta0 = math.atan2(delta_y0, delta_x0)
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theta1 = math.atan2(delta_y1, delta_x1)
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# Draw the arc
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ctx.set_source_rgb (*color)
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ctx.set_line_width(self.diameter * SCALE)
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ctx.set_line_cap(cairo.LINE_CAP_ROUND)
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if direction == 'clockwise':
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ctx.arc_negative(center[0], center[1], radius, theta0, theta1)
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else:
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ctx.arc(center[0], center[1], radius, theta0, theta1)
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ctx.stroke()
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def flash(self, ctx, x, y, color=(184/255., 115/255., 51/255.)):
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ctx.set_source_rgb (*color)
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ctx.set_line_width(0)
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ctx.arc(x * SCALE, y * SCALE, (self.diameter/2.) * SCALE, 0, 2 * math.pi)
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ctx.fill()
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class CairoRect(Rect):
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def line(self, ctx, x, y, color=(184/255., 115/255., 51/255.)):
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ctx.set_source_rgb (*color)
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ctx.set_line_width(self.diameter * SCALE)
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ctx.set_line_cap(cairo.LINE_CAP_SQUARE)
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ctx.line_to(x * SCALE, y * SCALE)
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ctx.stroke()
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def flash(self, ctx, x, y, color=(184/255., 115/255., 51/255.)):
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xsize, ysize = self.size
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ctx.set_source_rgb (*color)
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ctx.set_line_width(0)
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x0 = SCALE * (x - (xsize / 2.))
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y0 = SCALE * (y - (ysize / 2.))
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ctx.rectangle(x0,y0,SCALE * xsize, SCALE * ysize)
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ctx.fill()
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class GerberCairoContext(GerberContext):
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def __init__(self, surface=None, size=(1000, 1000),
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color='rgb(184, 115, 51)', drill_color='gray'):
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GerberContext.__init__(self)
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if surface is None:
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self.surface = cairo.ImageSurface(cairo.FORMAT_ARGB32,
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size[0], size[1])
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else:
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self.surface = surface
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self.ctx = cairo.Context(self.surface)
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self.size = size
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self.ctx.translate(0, self.size[1])
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self.ctx.scale(1,-1)
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self.apertures = {}
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self.color = color
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self.drill_color = drill_color
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self.background = False
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def set_bounds(self, bounds):
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xbounds, ybounds = bounds
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self.ctx.rectangle(SCALE * xbounds[0], SCALE * ybounds[0], SCALE * (xbounds[1]- xbounds[0]), SCALE * (ybounds[1] - ybounds[0]))
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self.ctx.set_source_rgb(0,0,0)
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self.ctx.fill()
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def define_aperture(self, d, shape, modifiers):
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aperture = None
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if shape == 'C':
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aperture = CairoCircle(diameter=float(modifiers[0][0]))
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elif shape == 'R':
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aperture = CairoRect(size=modifiers[0][0:2])
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self.apertures[d] = aperture
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def stroke(self, x, y, i, j):
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super(GerberCairoContext, self).stroke(x, y, i, j)
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if self.interpolation == 'linear':
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self.line(x, y)
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elif self.interpolation == 'arc':
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self.arc(x, y, i, j)
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self.move(x,y)
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def line(self, x, y):
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x, y = self.resolve(x, y)
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ap = self.apertures.get(self.aperture, None)
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if ap is None:
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return
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ap.line(self.ctx, x, y)
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def arc(self, x, y, i, j):
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super(GerberCairoContext, self).arc(x, y, i, j)
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ap = self.apertures.get(self.aperture, None)
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if ap is None:
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return
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ap.arc(self.ctx, x, y, i, j, self.direction)
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def flash(self, x, y):
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x, y = self.resolve(x, y)
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ap = self.apertures.get(self.aperture, None)
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if ap is None:
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return
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ap.flash(self.ctx, x, y)
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self.move(x, y, resolve=False)
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def move(self, x, y, resolve=True):
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super(GerberCairoContext, self).move(x, y, resolve)
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if x is None:
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x = self.x
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if y is None:
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y = self.y
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if self.x is not None and self.y is not None:
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self.ctx.move_to(x * SCALE, y * SCALE)
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def dump(self, filename):
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self.surface.write_to_png(filename) |