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Diffstat (limited to 'examples/cairo_example.py')
-rw-r--r-- | examples/cairo_example.py | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/examples/cairo_example.py b/examples/cairo_example.py new file mode 100644 index 0000000..14a7037 --- /dev/null +++ b/examples/cairo_example.py @@ -0,0 +1,69 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright 2015 Hamilton Kibbe <ham@hamiltonkib.be> + +# 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. + +""" +This example demonstrates the use of pcb-tools with cairo to render a composite +image from a set of gerber files. Each layer is loaded and drawn using a +GerberCairoContext. The color and opacity of each layer can be set individually. +Once all thedesired layers are drawn on the context, the context is written to +a .png file. +""" + +import os +from gerber import read +from gerber.render import GerberCairoContext, theme + +GERBER_FOLDER = os.path.abspath(os.path.join(os.path.dirname(__file__), 'gerbers')) + + +# Open the gerber files +copper = read(os.path.join(GERBER_FOLDER, 'copper.GTL')) +mask = read(os.path.join(GERBER_FOLDER, 'soldermask.GTS')) +silk = read(os.path.join(GERBER_FOLDER, 'silkscreen.GTO')) +drill = read(os.path.join(GERBER_FOLDER, 'ncdrill.DRD')) + +# Create a new drawing context +ctx = GerberCairoContext() + +# Set opacity and color for copper layer +ctx.alpha = 1.0 +ctx.color = theme.COLORS['hasl copper'] + +# Draw the copper layer +copper.render(ctx) + +# Set opacity and color for soldermask layer +ctx.alpha = 0.75 +ctx.color = theme.COLORS['green soldermask'] + +# Draw the soldermask layer +mask.render(ctx, invert=True) + +# Set opacity and color for silkscreen layer +ctx.alpha = 1.0 +ctx.color = theme.COLORS['white'] + +# Draw the silkscreen layer +silk.render(ctx) + +# Set opacity for drill layer +ctx.alpha = 1.0 +ctx.color = theme.COLORS['black'] +drill.render(ctx) + +# Write output to png file +ctx.dump(os.path.join(os.path.dirname(__file__), 'cairo_example.png')) |