6f876edd09
this incorporates some of @chintal's layers.py changes PCB.from_directory() simplifies loading of multiple gerbers the PCB() class should be pretty helpful going forward... the context classes could use some cleaning up, although I'd like to wait until the freecad stuff gets merged, that way we can try to refactor the context base to support more use cases
69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2015 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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"""
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This example demonstrates the use of pcb-tools with cairo to render a composite
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image from a set of gerber files. Each layer is loaded and drawn using a
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GerberCairoContext. The color and opacity of each layer can be set individually.
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Once all thedesired layers are drawn on the context, the context is written to
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a .png file.
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"""
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import os
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from gerber import read
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from gerber.render import GerberCairoContext, theme
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GERBER_FOLDER = os.path.abspath(os.path.join(os.path.dirname(__file__), 'gerbers'))
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# Open the gerber files
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copper = read(os.path.join(GERBER_FOLDER, 'copper.GTL'))
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mask = read(os.path.join(GERBER_FOLDER, 'soldermask.GTS'))
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silk = read(os.path.join(GERBER_FOLDER, 'silkscreen.GTO'))
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drill = read(os.path.join(GERBER_FOLDER, 'ncdrill.DRD'))
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# Create a new drawing context
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ctx = GerberCairoContext()
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# Set opacity and color for copper layer
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ctx.alpha = 1.0
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ctx.color = theme.COLORS['hasl copper']
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# Draw the copper layer
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copper.render(ctx)
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# Set opacity and color for soldermask layer
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ctx.alpha = 0.75
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ctx.color = theme.COLORS['green soldermask']
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# Draw the soldermask layer
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mask.render(ctx, invert=True)
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# Set opacity and color for silkscreen layer
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ctx.alpha = 1.0
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ctx.color = theme.COLORS['white']
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# Draw the silkscreen layer
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silk.render(ctx)
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# Set opacity for drill layer
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ctx.alpha = 1.0
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ctx.color = theme.COLORS['black']
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drill.render(ctx)
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# Write output to png file
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ctx.dump(os.path.join(os.path.dirname(__file__), 'cairo_example.png'))
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