def test_extract_paths_inside_group_keeping_nested_transform(self): #pylint: disable=invalid-name
""" Tests that extracted path from elements with nested transformation works correctly
"""
root = etree.Element("root")
group = etree.SubElement(root, "{http://www.w3.org/2000/svg}g",
{'transform': "translate(10,20)"})
subgroup = etree.SubElement(group, "{http://www.w3.org/2000/svg}g",
{'transform': "matrix(1,2,3,4,5,6)"})
etree.SubElement(subgroup, "{http://www.w3.org/2000/svg}path",
{'d': "M 10,20 L 50,30 L 20,70"})
extractor = PathsExtractor([group], to_mm, "wId")
extractor.extract()
self.assertEqual(extractor.paths()[0], [(85.0, 126.0), (155.0, 246.0),
(245.0, 346.0)])
def test_use_parent_transform_for_single_path_with_multiple_parents(self): #pylint: disable=invalid-name
""" Tests that extracted path takes all the ancestors transformations into account
"""
root = etree.Element("root", {'transform': "scale(10)"})
parent = etree.SubElement(root, "{http://www.w3.org/2000/svg}g",
{'transform': "translate(10,20)"})
element = etree.SubElement(parent, "{http://www.w3.org/2000/svg}path",
{
'transform': "matrix(1,2,3,4,5,6)",
'd': "M 10,20 L 50,30 L 20,70"
})
extractor = PathsExtractor([element], to_mm, "wId")
extractor.extract()
self.assertEqual(extractor.paths()[0], [(850.0, 1260.0),
(1550.0, 2460.0),
(2450.0, 3460.0)])
def effect(self):
""" Main function
"""
# A function to convert to millimiters
to_mm = lambda value: self.uutounit(value, 'mm')
# A function to convert to user units. This must be used to write units in the svg
to_uu = lambda value: self.unittouu(str(value) + "mm")
# Draw the working area
working_area_generator = WorkingAreaGenerator(to_uu, WORKING_AREA_ID)
working_area_generator.set_size(self.options.dim_x, self.options.dim_y)
working_area_generator.upsert(self.document.getroot())
if not self.options.ids:
# print info and exit
# Using error message even if this it not really an error...
inkex.debug(_(("No path was seletect, only the working area was generated. Now draw a "
"path inside the working area and select it to generate the g-code")))
else:
# Extracting paths in machine coordinates
paths_extractor = PathsExtractor(self.selected.values(), to_mm, WORKING_AREA_ID,
FlattenBezier(FLATNESS))
paths_extractor.extract()
# Generate tool positions and orientations
tool_path_generator = EngravingToolPathsGenerator(paths_extractor.paths(),
self.options.depth_z, MIN_DISTANCE,
DISCRETIZATION_STEP)
tool_path_generator.generate()
# Generating g-code
gcode_generator = EngravingGCodeGenerator(tool_path_generator.paths(), MM_PER_DEGREE,
SAFE_Z, SMALL_DISTANCE, SMALL_ANGLE)
gcode_generator.generate()
# Writing to file
filename = base_filename(self.options.filename, self.gcode_file_path) + ".gcode"
write_file(filename, lambda f: f.write(gcode_generator.gcode()))
inkex.debug(_("The generate g-code has been save to ") + filename)
def test_closed_paths_with_multiple_paths(self): #pylint: disable=invalid-name
""" Tests that closed paths are extracted correctly also when multiple subpaths are present
"""
root = etree.Element("root")
element = etree.SubElement(
root, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490 Z M 100,100 L 200,200"})
extractor = PathsExtractor([element], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 2)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0), (70.0, 800.0)])
self.assertEqual(extractor.paths()[1], [(100.0, 100.0),
(200.0, 200.0)])
def test_extract_multiple_paths_when_lines_interrupted(self): #pylint: disable=invalid-name
""" Tests that multiple paths are generated when svg path is not continuos
"""
root = etree.Element("root")
element = etree.SubElement(
root, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490 M 100,100 L 200,200"})
extractor = PathsExtractor([element], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 2)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0)])
self.assertEqual(extractor.paths()[1], [(100.0, 100.0),
(200.0, 200.0)])
def test_extract_svg_path_with_only_straight_lines(self): #pylint: disable=invalid-name
""" Tests that svg paths are correctly extracted
"""
root = etree.Element("root")
element = etree.SubElement(root, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490"})
extractor = PathsExtractor([element], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 1)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0)])
def test_closed_paths(self):
""" Tests that closed paths are extracted correctly by repeating the first point at the end
"""
root = etree.Element("root")
group = etree.SubElement(root, "{http://www.w3.org/2000/svg}g")
etree.SubElement(group, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490 Z"})
extractor = PathsExtractor([group], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 1)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0), (70.0, 800.0)])
def test_extract_path_inside_groups(self): #pylint: disable=invalid-name
""" Tests that a path inside a group is correctly extracted
"""
root = etree.Element("root")
group = etree.SubElement(root, "{http://www.w3.org/2000/svg}g")
etree.SubElement(group, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490"})
extractor = PathsExtractor([group], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 1)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0)])
def test_automatically_close_open_paths_does_nothing_if_paths_closed(self): #pylint: disable=invalid-name
""" Tests that nothing changes if closing paths is requested but paths are closed
"""
root = etree.Element("root")
element = etree.SubElement(
root, "{http://www.w3.org/2000/svg}path", {
'd': ("M 70,800 l 125,-300 l 60,490 Z "
"M 100,100 L 200,200 L 100,100")
})
extractor = PathsExtractor([element], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 2)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0), (70.0, 800.0)])
self.assertEqual(extractor.paths()[1], [(100.0, 100.0), (200.0, 200.0),
(100.0, 100.0)])
def test_extract_paths_inside_groups_and_outside(self): #pylint: disable=invalid-name
""" Tests that a mix of paths inside groups and outside are correctly extracted
"""
root = etree.Element("root")
element = etree.SubElement(root, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,390"})
group = etree.SubElement(root, "{http://www.w3.org/2000/svg}g")
etree.SubElement(group, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490"})
etree.SubElement(group, "{http://www.w3.org/2000/svg}path",
{'d': "M 60,700 l 127,-500 l 70,900"})
extractor = PathsExtractor([element, group], to_mm, "wId")
extractor.extract()
self.assertEqual(len(extractor.paths()), 3)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 890.0)])
self.assertEqual(extractor.paths()[1], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0)])
self.assertEqual(extractor.paths()[2], [(60.0, 700.0), (187.0, 200.0),
(257.0, 1100.0)])
def test_automatically_close_open_paths(self): #pylint: disable=invalid-name
""" Tests that open paths are automatically closed if requested
"""
root = etree.Element("root")
element = etree.SubElement(
root, "{http://www.w3.org/2000/svg}path",
{'d': "M 70,800 l 125,-300 l 60,490 M 100,100 L 200,200"})
extractor = PathsExtractor([element],
to_mm,
"wId",
auto_close_path=True)
extractor.extract()
self.assertEqual(len(extractor.paths()), 2)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0), (70.0, 800.0)])
self.assertEqual(extractor.paths()[1], [(100.0, 100.0), (200.0, 200.0),
(100.0, 100.0)])
def test_use_parent_transform_for_multiple_path(self): #pylint: disable=invalid-name
""" Tests that extracted path takes the parent transformation into account
"""
root1 = etree.Element("root", {'transform': "translate(10,20)"})
element1 = etree.SubElement(root1, "{http://www.w3.org/2000/svg}path",
{
'transform': "matrix(1,2,3,4,5,6)",
'd': "M 10,20 L 50,30 L 20,70"
})
root2 = etree.Element("root", {'transform': "translate(5,10)"})
element2 = etree.SubElement(root2, "{http://www.w3.org/2000/svg}path",
{
'transform': "matrix(1,2,3,4,5,6)",
'd': "M 10,20 L 50,30 L 20,70"
})
extractor = PathsExtractor([element1, element2], to_mm, "wId")
extractor.extract()
self.assertEqual(extractor.paths()[0], [(85.0, 126.0), (155.0, 246.0),
(245.0, 346.0)])
self.assertEqual(extractor.paths()[1], [(80.0, 116.0), (150.0, 236.0),
(240.0, 336.0)])
def test_flatten_path_if_requested(self):
""" Tests that path is flattened if the constructor flatten parameter is not None
"""
root = etree.Element("root")
element = etree.SubElement(root, "{http://www.w3.org/2000/svg}path",
{'d': "dummy value to check"})
class FlattenMock: #pylint: disable=missing-docstring,too-few-public-methods
def __init__(self, test):
self.test = test
def __call__(self, curve): #pylint: disable=missing-docstring
self.test.assertEqual(curve, "dummy value to check")
return [('M', (70.0, 800.0)), ('L', (195.0, 500.0)),
('L', (255.0, 990.0))]
extractor = PathsExtractor([element], to_mm, "wId", FlattenMock(self))
extractor.extract()
self.assertEqual(len(extractor.paths()), 1)
self.assertEqual(extractor.paths()[0], [(70.0, 800.0), (195.0, 500.0),
(255.0, 990.0)])
def effect(self):
""" Main function
"""
# First of all generating the machine instance and checking piece dimensions fit
machine = machine_factory(self.options.machine_type)
if machine:
valid_dimensions = machine.piece_dimensions_allowed(
self.options.dim_x, self.options.dim_y)
if not valid_dimensions:
raise InvalidWorkpieceDimensions(machine.working_area_width(),
machine.working_area_height())
# A function to convert to millimiters
to_mm = lambda value: self.uutounit(value, 'mm')
# A function to convert to user units. This must be used to write units in the svg
to_uu = lambda value: self.unittouu(str(value) + "mm")
# Draw the working area
working_area_generator = WorkingAreaGenerator(to_uu, WORKING_AREA_ID)
working_area_generator.set_size(self.options.dim_x, self.options.dim_y)
working_area_generator.upsert(self.document.getroot())
if not self.options.ids:
# print info and exit
inkex.debug(
_(("No path was seletect, only the working area was generated. Now draw a "
"path inside the working area and select it to generate the g-code"
)))
else:
# Extracting paths in machine coordinates
paths_extractor = PathsExtractor(
self.selected.values(), to_mm, WORKING_AREA_ID,
FlattenBezier(self.options.flatness),
self.options.auto_close_path)
paths_extractor.extract()
# The border to use. This is None if no border is requested. If border is present, also
# draws it
border = None
if self.options.square:
border = Border(paths_extractor.paths(), self.options.margin)
painter = BorderPainter(border)
painter.paint(working_area_generator)
# Joining paths. This will also check that all paths are closed
paths_joiner = PathsJoiner(paths_extractor.paths(), CLOSE_DISTANCE)
paths_joiner.unite()
# Generate tool positions
tool_path_generator = CuttingToolPathsGenerator(
paths_joiner.union_path(), CLOSE_DISTANCE, border)
tool_path_generator.generate()
# The object drawing the tool path
painter = ToolPathPainter(tool_path_generator.path())
# Draw tool path on original svg if requested
if self.options.draw_toolpath:
painter.paint(working_area_generator.get_element(),
working_area_generator.get_factor(), "255,0,0")
# Generating g-code
gcode_generator = CuttingGCodeGenerator(tool_path_generator.path(),
self.options.speed)
gcode_generator.generate()
# Computing information about path
generic_filename = base_filename(self.options.shapename,
self.gcode_file_path)
info = PathInfo(tool_path_generator.path(), self.options,
generic_filename)
# Writing gcode to file
write_file(
os.path.join(self.gcode_file_path, info.gcode_filename()),
lambda f: f.write(gcode_generator.gcode()))
# Writing svg to file
doc = generate_path_svg(painter)
write_file(os.path.join(self.gcode_file_path, info.svg_filename()),
lambda f: doc.write(f))
# Writing metainfo to file
write_file(
os.path.join(self.gcode_file_path, info.metainfo_filename()),
lambda f: f.write(json.dumps(info.metainfo(), indent=2)))
message = (_("The generate g-code has been saved to ") +
info.gcode_filename() +
_(". Estimated working time: ") +
str(info.working_time_min()) + _(" minutes"))
if not info.is_path_inside_workpiece():
message += _(
". WARNING: some points are outside the workpiece")
inkex.debug(message)