#! /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 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() # Draw the copper layer copper.render(ctx) # Set opacity and color for soldermask layer ctx.alpha = 0.6 ctx.color = (0.2, 0.2, 0.75) # Draw the soldermask layer mask.render(ctx) # Set opacity and color for silkscreen layer ctx.alpha = 0.85 ctx.color = (1, 1, 1) # Draw the silkscreen layer silk.render(ctx) # Set opacity for drill layer ctx.alpha = 1. drill.render(ctx) # Write output to png file ctx.dump(os.path.join(os.path.dirname(__file__), 'cairo_example.png'))