diff options
Diffstat (limited to 'gerbonara/gerber')
| -rw-r--r-- | gerbonara/gerber/tests/test_cairo_backend.py | 62 |
1 files changed, 50 insertions, 12 deletions
diff --git a/gerbonara/gerber/tests/test_cairo_backend.py b/gerbonara/gerber/tests/test_cairo_backend.py index 92c99ed..b4b8ce3 100644 --- a/gerbonara/gerber/tests/test_cairo_backend.py +++ b/gerbonara/gerber/tests/test_cairo_backend.py @@ -39,23 +39,17 @@ def cleanup(request): def test_render_two_boxes(): """Umaco exapmle of two boxes""" - _test_render( - "resources/example_two_square_boxes.gbr", "golden/example_two_square_boxes.png" - ) + _test_render("resources/example_two_square_boxes.gbr", "golden/example_two_square_boxes.png") def _DISABLED_test_render_single_quadrant(): """Umaco exapmle of a single quadrant arc""" - _test_render( - "resources/example_single_quadrant.gbr", "golden/example_single_quadrant.png" - ) + _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" - ) + gerber = _test_render("resources/example_simple_contour.gbr", "golden/example_simple_contour.png") # Check the resulting dimensions assert ((2.0, 11.0), (1.0, 9.0)) == gerber.bounding_box @@ -221,15 +215,60 @@ def test_render_svg_simple_contour(): _test_simple_render_svg("resources/example_simple_contour.gbr") +def test_fine_lines_x(): + """ Regression test for pcb-tools upstream PR #199 """ + for fn, axis in [ + ('resources/test_fine_lines_x.gbr', 1), + ('resources/test_fine_lines_y.gbr', 0) ]: + gerber_path = _resolve_path(fn) + + gerber = read(gerber_path) + + # Create PNG image to the memory stream + ctx = GerberCairoContext(scale=51) + gerber.render(ctx) + + global output_dir + with output_dir.create(suffix='.png') as outfile: + actual_bytes = ctx.dump(outfile) + + out = Image.open(outfile) + out = np.array(out) + out = out.astype(float).mean(axis=2) / 255 + + means = out[10:-10,10:-10].mean(axis=axis) + + print(means.mean(), means.max(), means.min(), means.std()) + #print(means_y.mean(), means_y.max(), means_y.min(), means_y.std()) + # means_x broken: 0.3240598567858516 0.3443678513071895 0.2778033088235294 0.017457710324088545 + # means_x fixed: 0.33338519639882097 0.3443678513071895 0.3183159722222221 0.006792500045785638 + # means_y broken: 0.3240598567858518 0.3247468922209409 0.1660387030629246 0.009953477851147686 + # means_y fixed: 0.33338519639882114 0.3340766371908242 0.17388184031782652 0.010043400730860096 + + assert means.std() < 0.01 + +# TODO add scale tests: Export with different scale=... params and compare against bitmap-scaled reference image + def _resolve_path(path): return os.path.join(os.path.dirname(__file__), path) def images_match(reference, output, max_delta): + global output_dir + ref, out = Image.open(reference), Image.open(output) ref, out = np.array(ref), np.array(out) # convert to grayscale ref, out = ref.astype(float).mean(axis=2), out.astype(float).mean(axis=2) + if ref.shape != out.shape: + print(f'Rendering image size mismatch') + print(f'Reference image: {Path(reference).absolute()}') + print(f'Actual output: {output}') + + output_dir.keep() + + return False + delta = np.abs(out - ref).astype(float) / 255 if delta.mean() > max_delta: @@ -241,7 +280,6 @@ def images_match(reference, output, max_delta): print_stats('reference', ref) print_stats('actual', out) - global output_dir output_dir.keep() return False @@ -249,7 +287,7 @@ def images_match(reference, output, max_delta): return True -def _test_render(gerber_path, png_expected_path, max_delta=1e-6): +def _test_render(gerber_path, png_expected_path, max_delta=1e-6, scale=300): """Render the gerber file and compare to the expected PNG output. Parameters @@ -269,7 +307,7 @@ def _test_render(gerber_path, png_expected_path, max_delta=1e-6): gerber = read(gerber_path) # Create PNG image to the memory stream - ctx = GerberCairoContext() + ctx = GerberCairoContext(scale=scale) gerber.render(ctx) global output_dir |