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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Author: Garret Fick <garret@ficksworkshop.com>
import io
import os
from ..render.cairo_backend import GerberCairoContext
from ..rs274x import read, GerberFile
from .tests import *
from nose.tools import assert_tuple_equal
def test_render_two_boxes():
"""Umaco exapmle of two boxes"""
_test_render('resources/example_two_square_boxes.gbr', 'golden/example_two_square_boxes.png')
def test_render_single_quadrant():
"""Umaco exapmle of a single quadrant arc"""
_test_render('resources/example_single_quadrant.gbr', 'golden/example_single_quadrant.png')
def test_render_simple_contour():
"""Umaco exapmle of a simple arrow-shaped contour"""
gerber = _test_render('resources/example_simple_contour.gbr', 'golden/example_simple_contour.png')
# Check the resulting dimensions
assert_tuple_equal(((2.0, 11.0), (1.0, 9.0)), gerber.bounding_box)
def test_render_single_contour_1():
"""Umaco example of a single contour
The resulting image for this test is used by other tests because they must generate the same output."""
_test_render('resources/example_single_contour_1.gbr', 'golden/example_single_contour.png')
def test_render_single_contour_2():
"""Umaco exapmle of a single contour, alternate contour end order
The resulting image for this test is used by other tests because they must generate the same output."""
_test_render('resources/example_single_contour_2.gbr', 'golden/example_single_contour.png')
def test_render_single_contour_3():
"""Umaco exapmle of a single contour with extra line"""
_test_render('resources/example_single_contour_3.gbr', 'golden/example_single_contour_3.png')
def test_render_not_overlapping_contour():
"""Umaco example of D02 staring a second contour"""
_test_render('resources/example_not_overlapping_contour.gbr', 'golden/example_not_overlapping_contour.png')
def test_render_not_overlapping_touching():
"""Umaco example of D02 staring a second contour"""
_test_render('resources/example_not_overlapping_touching.gbr', 'golden/example_not_overlapping_touching.png')
def test_render_overlapping_touching():
"""Umaco example of D02 staring a second contour"""
_test_render('resources/example_overlapping_touching.gbr', 'golden/example_overlapping_touching.png')
def test_render_overlapping_contour():
"""Umaco example of D02 staring a second contour"""
_test_render('resources/example_overlapping_contour.gbr', 'golden/example_overlapping_contour.png')
def _DISABLED_test_render_level_holes():
"""Umaco example of using multiple levels to create multiple holes"""
# TODO This is clearly rendering wrong. I'm temporarily checking this in because there are more
# rendering fixes in the related repository that may resolve these.
_test_render('resources/example_level_holes.gbr', 'golden/example_overlapping_contour.png')
def _DISABLED_test_render_cutin():
"""Umaco example of using a cutin"""
# TODO This is clearly rendering wrong.
_test_render('resources/example_cutin.gbr', 'golden/example_cutin.png')
def test_render_fully_coincident():
"""Umaco example of coincident lines rendering two contours"""
_test_render('resources/example_fully_coincident.gbr', 'golden/example_fully_coincident.png')
def test_render_coincident_hole():
"""Umaco example of coincident lines rendering a hole in the contour"""
_test_render('resources/example_coincident_hole.gbr', 'golden/example_coincident_hole.png')
def test_render_cutin_multiple():
"""Umaco example of a region with multiple cutins"""
_test_render('resources/example_cutin_multiple.gbr', 'golden/example_cutin_multiple.png')
def test_flash_circle():
"""Umaco example a simple circular flash with and without a hole"""
_test_render('resources/example_flash_circle.gbr', 'golden/example_flash_circle.png')
def test_flash_rectangle():
"""Umaco example a simple rectangular flash with and without a hole"""
_test_render('resources/example_flash_rectangle.gbr', 'golden/example_flash_rectangle.png')
def test_flash_obround():
"""Umaco example a simple obround flash with and without a hole"""
_test_render('resources/example_flash_obround.gbr', 'golden/example_flash_obround.png')
def test_flash_polygon():
"""Umaco example a simple polygon flash with and without a hole"""
_test_render('resources/example_flash_polygon.gbr', 'golden/example_flash_polygon.png', 'golden/example_flash_polygon.png')
def _resolve_path(path):
return os.path.join(os.path.dirname(__file__),
path)
def _test_render(gerber_path, png_expected_path, create_output_path = None):
"""Render the gerber file and compare to the expected PNG output.
Parameters
----------
gerber_path : string
Path to Gerber file to open
png_expected_path : string
Path to the PNG file to compare to
create_output : string|None
If not None, write the generated PNG to the specified path.
This is primarily to help with
"""
gerber_path = _resolve_path(gerber_path)
png_expected_path = _resolve_path(png_expected_path)
if create_output_path:
create_output_path = _resolve_path(create_output_path)
gerber = read(gerber_path)
# Create PNG image to the memory stream
ctx = GerberCairoContext()
gerber.render(ctx)
actual_bytes = ctx.dump(None)
# If we want to write the file bytes, do it now. This happens
if create_output_path:
with open(create_output_path, 'wb') as out_file:
out_file.write(actual_bytes)
# Creating the output is dangerous - it could overwrite the expected result.
# So if we are creating the output, we make the test fail on purpose so you
# won't forget to disable this
assert_false(True, 'Test created the output %s. This needs to be disabled to make sure the test behaves correctly' % (create_output_path,))
# Read the expected PNG file
with open(png_expected_path, 'rb') as expected_file:
expected_bytes = expected_file.read()
assert_equal(expected_bytes, actual_bytes)
return gerber
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