def buildCrossSection(sliceName, axis, distance, built_parts_dict):
"""Render the 2D objects required for cross-sections.
Parameters
----------
sliceName :
axis :
distance :
built_parts_dict : dict
Returns
-------
"""
polygons = {}
for part_name in built_parts_dict:
built_part = built_parts_dict[part_name]
# loop over FreeCAD shapes corresponding to part
# slice the 3D part
fcName = f"{part_name}_section_{sliceName}"
section = crossSection(built_part, axis=axis, d=distance, name=fcName)
# separate disjoint pieces
segments, cycles = findEdgeCycles(section)
for i, cycle in enumerate(cycles):
points = [tuple(segments[idx, 0]) for idx in cycle]
patchName = f"{part_name}_{i}"
# this mapping is necessary since numpy floats have a pickle error:
polygons[patchName] = [list(map(float, point)) for point in points]
return polygons
def buildCrossSection(sliceInfo, passModel=None):
"""Render the 2D objects required for cross-sections."""
if passModel is None:
passModel = getModel()
doc = FreeCAD.ActiveDocument
sliceName = sliceInfo['sliceName']
axis, distance = sliceInfo['axis'], sliceInfo['distance']
sliceParts = {}
for name, part in iteritems(passModel.modelDict['3DParts']):
# loop over FreeCAD shapes corresponding to part
polygons = {}
for shapeName in part['fileNames'].keys():
# slice the 3D part
fcName = shapeName + '_section_' + sliceName
partObj = doc.getObject(shapeName)
section = crossSection(partObj, axis=axis, d=distance, name=fcName)
# separate disjoint pieces
segments, cycles = findEdgeCycles(section)
for i, cycle in enumerate(cycles):
points = [tuple(segments[idx, 0]) for idx in cycle]
patchName = fcName
patchName = '{}_{}'.format(shapeName, i)
polygons[patchName] = points
# store sliced part
if polygons:
slicePart = part.copy()
slicePart['type'] = "domain"
slicePart['3DPart'] = name
slicePart['geometry'] = polygons
sliceParts[name] = slicePart
return sliceParts
