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| __title__ = "BOPTools.SplitAPI module" |
| __author__ = "DeepSOIC" |
| __url__ = "https://www.freecad.org" |
| __doc__ = "Split functions that operate on list_of_shapes." |
|
|
| import Part |
| from . import ShapeMerge |
| from .GeneralFuseResult import GeneralFuseResult |
| from . import Utils |
| import FreeCAD |
|
|
|
|
| def booleanFragments(list_of_shapes, mode, tolerance=0.0): |
| """booleanFragments(list_of_shapes, mode, tolerance = 0.0): functional part of |
| BooleanFragments feature. It's just result of generalFuse plus a bit of |
| post-processing. |
| |
| mode is a string. It can be "Standard", "Split" or "CompSolid". |
| "Standard" - return generalFuse as is. |
| "Split" - wires and shells will be split at intersections. |
| "CompSolid" - solids will be extracted from result of generelFuse, and compsolids will |
| be made from them; all other stuff is discarded.""" |
|
|
| pieces, map = list_of_shapes[0].generalFuse(list_of_shapes[1:], tolerance) |
| if mode == "Standard": |
| return pieces |
| elif mode == "CompSolid": |
| solids = pieces.Solids |
| if len(solids) < 1: |
| raise ValueError("No solids in the result. Can't make CompSolid.") |
| elif len(solids) == 1: |
| FreeCAD.Console.PrintWarning( |
| "Part_BooleanFragments: only one solid in the result, generating trivial compsolid." |
| ) |
| return ShapeMerge.mergeSolids(solids, bool_compsolid=True) |
| elif mode == "Split": |
| gr = GeneralFuseResult(list_of_shapes, (pieces, map)) |
| gr.splitAggregates() |
| return Part.makeCompound(gr.pieces) |
| else: |
| raise ValueError("Unknown mode: {mode}".format(mode=mode)) |
|
|
|
|
| def slice(base_shape, tool_shapes, mode, tolerance=0.0): |
| """slice(base_shape, tool_shapes, mode, tolerance = 0.0): functional part of |
| Slice feature. Splits base_shape into pieces based on intersections with tool_shapes. |
| |
| mode is a string. It can be "Standard", "Split" or "CompSolid". |
| "Standard" - return like generalFuse: edges, faces and solids are split, but wires, |
| shells, compsolids get extra segments but remain in one piece. |
| "Split" - wires and shells will be split at intersections, too. |
| "CompSolid" - slice a solid and glue it back together to make a compsolid""" |
|
|
| shapes = [base_shape] + [ |
| Part.makeCompound([tool_shape]) for tool_shape in tool_shapes |
| ] |
| if len(shapes) < 2: |
| raise ValueError("No slicing objects supplied!") |
| pieces, map = shapes[0].generalFuse(shapes[1:], tolerance) |
| gr = GeneralFuseResult(shapes, (pieces, map)) |
| result = None |
| if mode == "Standard": |
| result = gr.piecesFromSource(shapes[0]) |
| elif mode == "CompSolid": |
| solids = Part.makeCompound(gr.piecesFromSource(shapes[0])).Solids |
| if len(solids) < 1: |
| raise ValueError("No solids in the result. Can't make compsolid.") |
| elif len(solids) == 1: |
| FreeCAD.Console.PrintWarning( |
| "Part_Slice: only one solid in the result, generating trivial compsolid." |
| ) |
| result = ShapeMerge.mergeSolids(solids, bool_compsolid=True).childShapes() |
| elif mode == "Split": |
| gr.splitAggregates(gr.piecesFromSource(shapes[0])) |
| result = gr.piecesFromSource(shapes[0]) |
| if result != None: |
| return result[0] if len(result) == 1 else Part.makeCompound(result) |
| else: |
| return Part.Shape() |
|
|
|
|
| def xor(list_of_shapes, tolerance=0.0): |
| """xor(list_of_shapes, tolerance = 0.0): boolean XOR operation.""" |
| list_of_shapes = Utils.upgradeToAggregateIfNeeded(list_of_shapes) |
| pieces, map = list_of_shapes[0].generalFuse(list_of_shapes[1:], tolerance) |
| gr = GeneralFuseResult(list_of_shapes, (pieces, map)) |
| gr.explodeCompounds() |
| gr.splitAggregates() |
| pieces_to_keep = [] |
| for piece in gr.pieces: |
| if len(gr.sourcesOfPiece(piece)) % 2 == 1: |
| pieces_to_keep.append(piece) |
| return Part.makeCompound(pieces_to_keep) |
|
|
