diff options
Diffstat (limited to 'examples/cairo_example.py')
-rw-r--r-- | examples/cairo_example.py | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/examples/cairo_example.py b/examples/cairo_example.py new file mode 100644 index 0000000..ecfed4d --- /dev/null +++ b/examples/cairo_example.py @@ -0,0 +1,78 @@ +#! /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 load_layer +from gerber.render import RenderSettings, theme +from gerber.render.cairo_backend import GerberCairoContext + +GERBER_FOLDER = os.path.abspath(os.path.join(os.path.dirname(__file__), 'gerbers')) + + +# Open the gerber files +copper = load_layer(os.path.join(GERBER_FOLDER, 'copper.GTL')) +mask = load_layer(os.path.join(GERBER_FOLDER, 'soldermask.GTS')) +silk = load_layer(os.path.join(GERBER_FOLDER, 'silkscreen.GTO')) +drill = load_layer(os.path.join(GERBER_FOLDER, 'ncdrill.DRD')) + +# Create a new drawing context +ctx = GerberCairoContext() + +# Draw the copper layer. render_layer() uses the default color scheme for the +# layer, based on the layer type. Copper layers are rendered as +ctx.render_layer(copper) + +# Draw the soldermask layer +ctx.render_layer(mask) + + +# The default style can be overridden by passing a RenderSettings instance to +# render_layer(). +# First, create a settings object: +our_settings = RenderSettings(color=theme.COLORS['white'], alpha=0.85) + +# Draw the silkscreen layer, and specify the rendering settings to use +ctx.render_layer(silk, settings=our_settings) + +# Draw the drill layer +ctx.render_layer(drill) + +# Write output to png file +ctx.dump(os.path.join(os.path.dirname(__file__), 'cairo_example.png')) + +# Load the bottom layers +copper = load_layer(os.path.join(GERBER_FOLDER, 'bottom_copper.GBL')) +mask = load_layer(os.path.join(GERBER_FOLDER, 'bottom_mask.GBS')) + +# Clear the drawing +ctx.clear() + +# Render bottom layers +ctx.render_layer(copper) +ctx.render_layer(mask) +ctx.render_layer(drill) + +# Write png file +ctx.dump(os.path.join(os.path.dirname(__file__), 'cairo_bottom.png')) |