750 lines
28 KiB
Python
750 lines
28 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Copyright (c) 2007 Jürgen Riegel <juergen.riegel@web.de>
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# LGPL
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import os
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import sys
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import io
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import FreeCAD, unittest, Mesh
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import MeshEnums
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from FreeCAD import Base
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import time, tempfile, math
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# http://python-kurs.eu/threads.php
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try:
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import _thread as thread
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except Exception:
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import thread
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from os.path import join
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# ---------------------------------------------------------------------------
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# define the functions to test the FreeCAD mesh module
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# ---------------------------------------------------------------------------
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class MeshTopoTestCases(unittest.TestCase):
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def setUp(self):
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# set up a planar face with 18 triangles
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self.planarMesh = []
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for x in range(3):
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for y in range(3):
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self.planarMesh.append([0.0 + x, 0.0 + y, 0.0000])
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self.planarMesh.append([1.0 + x, 1.0 + y, 0.0000])
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self.planarMesh.append([0.0 + x, 1.0 + y, 0.0000])
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self.planarMesh.append([0.0 + x, 0.0 + y, 0.0000])
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self.planarMesh.append([1.0 + x, 0.0 + y, 0.0000])
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self.planarMesh.append([1.0 + x, 1.0 + y, 0.0000])
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def testCollapseFacetsSingle(self):
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for i in range(18):
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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planarMeshObject.collapseFacets([i])
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def testCollapseFacetsMultible(self):
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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planarMeshObject.collapseFacets(range(7))
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def testCollapseFacetsAll(self):
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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planarMeshObject.collapseFacets(range(18))
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# fmt: off
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def testCorruptedFacet(self):
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v = FreeCAD.Vector
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mesh = Mesh.Mesh()
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mesh.addFacet(
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v(1.0e1, -1.0e1, 1.0e1),
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v(1.0e1, +1.0e1, 1.0e1),
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v(0.0e0, 0.0e0, 1.0e1))
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mesh.addFacet(
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v(-1.0e1, -1.0e1, 1.0e1),
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v(-1.0e1, +1.0e1, 1.0e1),
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v(0e0, 0.0e0, 1.0e1))
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mesh.addFacet(
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v(+1.0e1, +1.0e1, 1.0e1),
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v(-1.0e1, +1.0e1, 1.0e1),
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v(.0e0, 0.0e0, 1.0e1))
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mesh.addFacet(
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v(+1.0e1, -1.0e1, 1.0e1),
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v(-1.0e1, -1.0e1, 1.0e1),
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v(.0e0, 0.0e0, 1.0e1))
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mesh.addFacet(
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v(-1.0e1, +1.0e1, 1.0e1),
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v(+1.0e1, +1.0e1, 1.0e1),
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v(+1.0e1, +1.0e1, 1.0e1))
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mesh.addFacet(
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v(+1.0e1, +1.0e1, 1.0e1),
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v(+1.0e1, 00.0e1, 1.0e1),
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v(+1.0e1, -1.0e1, 1.0e1))
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self.assertEqual(mesh.CountFacets, 6)
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mesh.fixIndices()
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self.assertEqual(mesh.CountFacets, 5)
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# fmt: on
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class MeshSplitTestCases(unittest.TestCase):
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def setUp(self):
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self.mesh = Mesh.createBox(1.0, 1.0, 1.0)
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def testSplitFacetOnOneEdge(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, p1, (p2 + p3) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_21(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, (p1 + p3) / 2, (p2 + p3) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_12(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, (p2 + p3) / 2, (p1 + p3) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_01(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, (p1 + p2) / 2, (p2 + p3) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_10(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, (p2 + p3) / 2, (p1 + p2) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_02(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, (p1 + p2) / 2, (p1 + p3) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_20(self):
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p1 = self.mesh.Points[0].Vector
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p2 = self.mesh.Points[1].Vector
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p3 = self.mesh.Points[2].Vector
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self.mesh.splitFacet(0, (p1 + p3) / 2, (p1 + p2) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testSplitFacetOnTwoEdges_5teps(self):
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Vec3d = FreeCAD.Vector
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for i in range(5):
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f = self.mesh.Facets[0]
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p1 = Vec3d(f.Points[0])
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p2 = Vec3d(f.Points[1])
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p3 = Vec3d(f.Points[2])
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self.mesh.splitFacet(0, (p1 + p3) / 2, (p2 + p3) / 2)
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self.assertFalse(self.mesh.hasNonManifolds())
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self.assertFalse(self.mesh.hasInvalidNeighbourhood())
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self.assertFalse(self.mesh.hasPointsOutOfRange())
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self.assertFalse(self.mesh.hasFacetsOutOfRange())
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self.assertFalse(self.mesh.hasCorruptedFacets())
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self.assertTrue(self.mesh.isSolid())
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def testFindNearest(self):
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self.assertEqual(len(self.mesh.nearestFacetOnRay((-2, 2, -6), (0, 0, 1))), 0)
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self.assertEqual(len(self.mesh.nearestFacetOnRay((0.5, 0.5, 0.5), (0, 0, 1))), 1)
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self.assertEqual(
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len(self.mesh.nearestFacetOnRay((0.5, 0.5, 0.5), (0, 0, 1), -math.pi / 2)), 0
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)
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self.assertEqual(
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len(self.mesh.nearestFacetOnRay((0.2, 0.1, 0.2), (0, 0, 1))),
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len(self.mesh.nearestFacetOnRay((0.2, 0.1, 0.2), (0, 0, -1))),
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)
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self.assertEqual(
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len(self.mesh.nearestFacetOnRay((0.2, 0.1, 0.2), (0, 0, 1), math.pi / 2)),
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len(self.mesh.nearestFacetOnRay((0.2, 0.1, 0.2), (0, 0, -1), math.pi / 2)),
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)
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# Apply placement to mesh
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plm = Base.Placement(Base.Vector(1, 2, 3), Base.Rotation(1, 1, 1, 1))
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pnt = Base.Vector(0.5, 0.5, 0.5)
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vec = Base.Vector(0.0, 0.0, 1.0)
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self.mesh.Placement = plm
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self.assertEqual(len(self.mesh.nearestFacetOnRay(pnt, vec)), 0)
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# Apply the placement on the ray as well
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pnt = plm.multVec(pnt)
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vec = plm.Rotation.multVec(vec)
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self.assertEqual(len(self.mesh.nearestFacetOnRay(pnt, vec)), 1)
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def testForaminate(self):
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class FilterAngle:
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def __init__(self, mesh, vec, limit):
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self.myMesh = mesh
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self.vec = vec
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self.limit = limit
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def check_angle(self, item):
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angle = self.myMesh.Facets[item].Normal.getAngle(self.vec)
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return angle < self.limit
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results = self.mesh.foraminate((0.0, 0.0, 0.0), (0, 1, 1))
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filtered_result = list(
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filter(
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FilterAngle(self.mesh, FreeCAD.Vector(0, 1, 1), math.pi / 2).check_angle,
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results.keys(),
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)
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)
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self.assertEqual(
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filtered_result, list(self.mesh.foraminate((0.0, 0.0, 0.0), (0, 1, 1), math.pi / 2))
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)
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def testForaminatePlacement(self):
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pnt = Base.Vector(0.0, 0.0, 0.0)
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vec = Base.Vector(0.0, 1.0, 1.0)
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results = self.mesh.foraminate(pnt, vec)
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self.assertEqual(len(results), 4)
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# Apply placement to mesh
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plm = Base.Placement(Base.Vector(1, 2, 3), Base.Rotation(1, 1, 1, 1))
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self.mesh.Placement = plm
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self.assertEqual(len(self.mesh.foraminate(pnt, vec)), 0)
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# Apply the placement on the ray as well
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pnt = plm.multVec(pnt)
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vec = plm.Rotation.multVec(vec)
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results2 = self.mesh.foraminate(pnt, vec)
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self.assertEqual(len(results2), 4)
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self.assertEqual(list(results), list(results2))
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class MeshGeoTestCases(unittest.TestCase):
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def setUp(self):
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# set up a planar face with 2 triangles
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self.planarMesh = []
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def testIntersection(self):
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self.planarMesh.append([0.9961, 1.5413, 4.3943])
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self.planarMesh.append([9.4796, 10.024, -3.0937])
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self.planarMesh.append([1.4308, 11.3841, 2.6829])
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self.planarMesh.append([2.6493, 2.2536, 3.0679])
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self.planarMesh.append([13.1126, 0.4857, -4.4417])
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self.planarMesh.append([10.2410, 8.9040, -3.5002])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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res = f1.intersect(f2)
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self.assertTrue(len(res) == 0)
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def testIntersection2(self):
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self.planarMesh.append([-16.097176, -29.891157, 15.987688])
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self.planarMesh.append([-16.176304, -29.859991, 15.947966])
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self.planarMesh.append([-16.071451, -29.900553, 15.912505])
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self.planarMesh.append([-16.092241, -29.893408, 16.020439])
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self.planarMesh.append([-16.007210, -29.926180, 15.967641])
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self.planarMesh.append([-16.064457, -29.904951, 16.090832])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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# does definitely NOT intersect
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res = f1.intersect(f2)
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self.assertTrue(len(res) == 0)
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def testIntersectionOfTransformedMesh(self):
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self.planarMesh.append([0.0, 10.0, 10.0])
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self.planarMesh.append([10.0, 0.0, 10.0])
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self.planarMesh.append([10.0, 10.0, 10.0])
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self.planarMesh.append([6.0, 8.0, 10.0])
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self.planarMesh.append([16.0, 8.0, 10.0])
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self.planarMesh.append([6.0, 18.0, 10.0])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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mat = Base.Matrix()
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mat.rotateX(1.0)
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mat.rotateY(1.0)
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mat.rotateZ(1.0)
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planarMeshObject.transformGeometry(mat)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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res = f1.intersect(f2)
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self.assertEqual(len(res), 2)
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def testIntersectionOfParallelTriangles(self):
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self.planarMesh.append([0.0, 10.0, 10.0])
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self.planarMesh.append([10.0, 0.0, 10.0])
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self.planarMesh.append([10.0, 10.0, 10.0])
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self.planarMesh.append([6.0, 8.0, 10.1])
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self.planarMesh.append([16.0, 8.0, 10.1])
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self.planarMesh.append([6.0, 18.0, 10.1])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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mat = Base.Matrix()
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mat.rotateX(1.0)
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mat.rotateY(1.0)
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mat.rotateZ(1.0)
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planarMeshObject.transformGeometry(mat)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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res = f1.intersect(f2)
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self.assertTrue(len(res) == 0)
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def testIntersectionOnEdge(self):
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self.planarMesh.append([5.0, -1.9371663331985474, 0.49737977981567383])
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self.planarMesh.append([4.0, -1.9371663331985474, 0.49737977981567383])
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self.planarMesh.append([5.0, -1.9842294454574585, 0.25066646933555603])
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self.planarMesh.append([4.6488823890686035, -1.7827962636947632, 0.4577442705631256])
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self.planarMesh.append([4.524135112762451, -2.0620131492614746, 0.5294350385665894])
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self.planarMesh.append([4.6488823890686035, -1.8261089324951172, 0.23069120943546295])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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res = f1.intersect(f2)
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self.assertEqual(len(res), 2)
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def testIntersectionCoplanar(self):
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self.planarMesh.append([0.0, 10.0, 10.0])
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self.planarMesh.append([10.0, 0.0, 10.0])
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self.planarMesh.append([10.0, 10.0, 10.0])
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self.planarMesh.append([6.0, 8.0, 10.0])
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self.planarMesh.append([16.0, 8.0, 10.0])
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self.planarMesh.append([6.0, 18.0, 10.0])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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res = f1.intersect(f2)
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self.assertTrue(len(res) == 2)
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def testIntersectionOverlap(self):
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self.planarMesh.append([0.0, 0.0, 0.0])
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self.planarMesh.append([5.0, 0.0, 0.0])
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self.planarMesh.append([8.0, 5.0, 0.0])
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self.planarMesh.append([4.0, 0.0, 0.0])
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self.planarMesh.append([10.0, 0.0, 0.0])
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self.planarMesh.append([9.0, 5.0, 0.0])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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f1 = planarMeshObject.Facets[0]
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f2 = planarMeshObject.Facets[1]
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res = f1.intersect(f2)
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self.assertTrue(len(res) == 2)
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def testIntersectionOfIntersectingEdges(self):
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self.planarMesh.append([0.0, 10.0, 10.0])
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self.planarMesh.append([10.0, 0.0, 10.0])
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self.planarMesh.append([10.0, 10.0, 10.0])
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self.planarMesh.append([6.0, 8.0, 10.0])
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self.planarMesh.append([16.0, 8.0, 10.0])
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self.planarMesh.append([6.0, 18.0, 10.0])
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planarMeshObject = Mesh.Mesh(self.planarMesh)
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edge1 = planarMeshObject.Facets[0].getEdge(2)
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edge2 = planarMeshObject.Facets[1].getEdge(2)
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res = edge1.intersectWithEdge(edge2)
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self.assertTrue(len(res) == 1)
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self.assertEqual(res[0][0], 6.0)
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self.assertEqual(res[0][1], 10.0)
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self.assertEqual(res[0][2], 10.0)
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def testIntersectionOfParallelEdges(self):
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self.planarMesh.append([0.0, 10.0, 10.0])
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self.planarMesh.append([10.0, 0.0, 10.0])
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self.planarMesh.append([10.0, 10.0, 10.0])
|
|
self.planarMesh.append([6.0, 8.0, 10.0])
|
|
self.planarMesh.append([16.0, 8.0, 10.0])
|
|
self.planarMesh.append([6.0, 18.0, 10.0])
|
|
planarMeshObject = Mesh.Mesh(self.planarMesh)
|
|
|
|
edge1 = planarMeshObject.Facets[0].getEdge(2)
|
|
edge2 = planarMeshObject.Facets[1].getEdge(0)
|
|
res = edge1.intersectWithEdge(edge2)
|
|
self.assertTrue(len(res) == 0)
|
|
|
|
def testIntersectionOfCollinearEdges(self):
|
|
self.planarMesh.append([0.0, 0.0, 0.0])
|
|
self.planarMesh.append([6.0, 0.0, 0.0])
|
|
self.planarMesh.append([3.0, 4.0, 0.0])
|
|
self.planarMesh.append([7.0, 0.0, 0.0])
|
|
self.planarMesh.append([13.0, 0.0, 0.0])
|
|
self.planarMesh.append([10.0, 4.0, 0.0])
|
|
planarMeshObject = Mesh.Mesh(self.planarMesh)
|
|
|
|
edge1 = planarMeshObject.Facets[0].getEdge(0)
|
|
edge2 = planarMeshObject.Facets[1].getEdge(0)
|
|
res = edge1.intersectWithEdge(edge2)
|
|
self.assertTrue(len(res) == 0)
|
|
|
|
def testIntersectionOfWarpedEdges(self):
|
|
self.planarMesh.append([0.0, 0.0, 0.0])
|
|
self.planarMesh.append([6.0, 0.0, 0.0])
|
|
self.planarMesh.append([3.0, 4.0, 0.0])
|
|
self.planarMesh.append([2.0, 2.0, 1.0])
|
|
self.planarMesh.append([8.0, 2.0, 1.0])
|
|
self.planarMesh.append([5.0, 6.0, 1.0])
|
|
planarMeshObject = Mesh.Mesh(self.planarMesh)
|
|
|
|
edge1 = planarMeshObject.Facets[0].getEdge(1)
|
|
edge2 = planarMeshObject.Facets[1].getEdge(0)
|
|
res = edge1.intersectWithEdge(edge2)
|
|
self.assertTrue(len(res) == 0)
|
|
|
|
def testSelfIntersection(self):
|
|
s = b"""solid Simple
|
|
facet normal 0.0e0 0.0e0 1.0e1
|
|
outer loop
|
|
vertex 0.0e1 0.0e1 1.0e1
|
|
vertex 0.0e1 +1.0e1 1.0e1
|
|
vertex +1.0e1 0.0e1 1.0e1
|
|
endloop
|
|
endfacet
|
|
facet normal 0.0e0 0.0e0 1.0e1
|
|
outer loop
|
|
vertex 0.0e1 +1.0e1 1.0e1
|
|
vertex +1.0e1 0.0e1 1.0e1
|
|
vertex 1.0e1 1.0e1 1.0e1
|
|
endloop
|
|
endfacet
|
|
facet normal 0.0e0 0.0e0 1.0e1
|
|
outer loop
|
|
vertex 0.0e1 0.0e1 1.0e1
|
|
vertex 0.0e1 +1.0e1 1.0e1
|
|
vertex -1.0e1 1.0e1 1.0e1
|
|
endloop
|
|
endfacet
|
|
facet normal 0.0e0 0.0e0 1.0e1
|
|
outer loop
|
|
vertex 0.0e1 0.0e1 1.0e1
|
|
vertex +1.0e1 0.0e1 1.0e1
|
|
vertex +1.0e1 -1.0e1 1.0e1
|
|
endloop
|
|
endfacet
|
|
facet normal 0.0e0 0.0e0 1.0e1
|
|
outer loop
|
|
vertex 0.6e1 0.8e1 1.0e1
|
|
vertex +1.6e1 0.8e1 1.0e1
|
|
vertex +0.6e1 1.8e1 1.0e1
|
|
endloop
|
|
endfacet
|
|
endsolid Simple"""
|
|
mesh = Mesh.Mesh()
|
|
data = io.BytesIO(s)
|
|
mesh.read(Stream=data, Format="AST")
|
|
self.assertTrue(mesh.hasSelfIntersections())
|
|
|
|
|
|
class PivyTestCases(unittest.TestCase):
|
|
def setUp(self):
|
|
# set up a planar face with 2 triangles
|
|
self.planarMesh = []
|
|
FreeCAD.newDocument("MeshTest")
|
|
|
|
def testRayPick(self):
|
|
if not FreeCAD.GuiUp:
|
|
return
|
|
self.planarMesh.append([-16.097176, -29.891157, 15.987688])
|
|
self.planarMesh.append([-16.176304, -29.859991, 15.947966])
|
|
self.planarMesh.append([-16.071451, -29.900553, 15.912505])
|
|
self.planarMesh.append([-16.092241, -29.893408, 16.020439])
|
|
self.planarMesh.append([-16.007210, -29.926180, 15.967641])
|
|
self.planarMesh.append([-16.064457, -29.904951, 16.090832])
|
|
planarMeshObject = Mesh.Mesh(self.planarMesh)
|
|
|
|
from pivy import coin
|
|
import FreeCADGui
|
|
|
|
Mesh.show(planarMeshObject)
|
|
view = FreeCADGui.ActiveDocument.ActiveView.getViewer()
|
|
rp = coin.SoRayPickAction(view.getSoRenderManager().getViewportRegion())
|
|
rp.setRay(coin.SbVec3f(-16.05, 16.0, 16.0), coin.SbVec3f(0, -1, 0))
|
|
rp.apply(view.getSoRenderManager().getSceneGraph())
|
|
pp = rp.getPickedPoint()
|
|
self.assertTrue(pp is not None)
|
|
det = pp.getDetail()
|
|
self.assertTrue(det.getTypeId() == coin.SoFaceDetail.getClassTypeId())
|
|
det = coin.cast(det, det.getTypeId().getName().getString())
|
|
self.assertTrue(det.getFaceIndex() == 1)
|
|
|
|
def testPrimitiveCount(self):
|
|
if not FreeCAD.GuiUp:
|
|
return
|
|
self.planarMesh.append([-16.097176, -29.891157, 15.987688])
|
|
self.planarMesh.append([-16.176304, -29.859991, 15.947966])
|
|
self.planarMesh.append([-16.071451, -29.900553, 15.912505])
|
|
self.planarMesh.append([-16.092241, -29.893408, 16.020439])
|
|
self.planarMesh.append([-16.007210, -29.926180, 15.967641])
|
|
self.planarMesh.append([-16.064457, -29.904951, 16.090832])
|
|
planarMeshObject = Mesh.Mesh(self.planarMesh)
|
|
|
|
from pivy import coin
|
|
import FreeCADGui
|
|
|
|
Mesh.show(planarMeshObject)
|
|
view = FreeCADGui.ActiveDocument.ActiveView
|
|
view.setAxisCross(False)
|
|
pc = coin.SoGetPrimitiveCountAction()
|
|
pc.apply(view.getSceneGraph())
|
|
self.assertTrue(pc.getTriangleCount() == 2)
|
|
# self.assertTrue(pc.getPointCount() == 6)
|
|
|
|
def tearDown(self):
|
|
# closing doc
|
|
FreeCAD.closeDocument("MeshTest")
|
|
|
|
|
|
# Threads
|
|
|
|
|
|
def loadFile(name):
|
|
# lock.acquire()
|
|
mesh = Mesh.Mesh()
|
|
# FreeCAD.Console.PrintMessage("Create mesh instance\n")
|
|
# lock.release()
|
|
mesh.read(name)
|
|
# FreeCAD.Console.PrintMessage("Mesh loaded successfully.\n")
|
|
|
|
|
|
def createMesh(r, s):
|
|
# FreeCAD.Console.PrintMessage("Create sphere (%s,%s)...\n"%(r,s))
|
|
mesh = Mesh.createSphere(r, s)
|
|
# FreeCAD.Console.PrintMessage("... destroy sphere\n")
|
|
|
|
|
|
class LoadMeshInThreadsCases(unittest.TestCase):
|
|
def setUp(self):
|
|
pass
|
|
|
|
def testSphereMesh(self):
|
|
for i in range(6, 8):
|
|
thread.start_new(createMesh, (10.0, (i + 1) * 20))
|
|
time.sleep(10)
|
|
|
|
def testLoadMesh(self):
|
|
mesh = Mesh.createSphere(10.0, 100) # a fine sphere
|
|
name = tempfile.gettempdir() + os.sep + "mesh.stl"
|
|
mesh.write(name)
|
|
# FreeCAD.Console.PrintMessage("Write mesh to %s\n"%(name))
|
|
# lock=thread.allocate_lock()
|
|
for i in range(2):
|
|
thread.start_new(loadFile, (name,))
|
|
time.sleep(1)
|
|
|
|
def tearDown(self):
|
|
pass
|
|
|
|
|
|
class PolynomialFitCases(unittest.TestCase):
|
|
def setUp(self):
|
|
pass
|
|
|
|
def testFitGood(self):
|
|
# symmetric
|
|
v = []
|
|
v.append(FreeCAD.Vector(0, 0, 0.0))
|
|
v.append(FreeCAD.Vector(1, 0, 0.5))
|
|
v.append(FreeCAD.Vector(2, 0, 0.0))
|
|
v.append(FreeCAD.Vector(0, 1, 0.5))
|
|
v.append(FreeCAD.Vector(1, 1, 1.0))
|
|
v.append(FreeCAD.Vector(2, 1, 0.5))
|
|
v.append(FreeCAD.Vector(0, 2, 0.0))
|
|
v.append(FreeCAD.Vector(1, 2, 0.5))
|
|
v.append(FreeCAD.Vector(2, 2, 0.0))
|
|
d = Mesh.polynomialFit(v)
|
|
c = d["Coefficients"]
|
|
# print ("Polynomial: f(x,y)=%f*x^2%+f*y^2%+f*x*y%+f*x%+f*y%+f" % (c[0],c[1],c[2],c[3],c[4],c[5]))
|
|
for i in d["Residuals"]:
|
|
self.assertTrue(math.fabs(i) < 0.0001, "Too high residual %f" % math.fabs(i))
|
|
|
|
def testFitExact(self):
|
|
# symmetric
|
|
v = []
|
|
v.append(FreeCAD.Vector(0, 0, 0.0))
|
|
v.append(FreeCAD.Vector(1, 0, 0.0))
|
|
v.append(FreeCAD.Vector(2, 0, 0.0))
|
|
v.append(FreeCAD.Vector(0, 1, 0.0))
|
|
v.append(FreeCAD.Vector(1, 1, 1.0))
|
|
v.append(FreeCAD.Vector(2, 1, 0.0))
|
|
d = Mesh.polynomialFit(v)
|
|
c = d["Coefficients"]
|
|
# print ("Polynomial: f(x,y)=%f*x^2%+f*y^2%+f*x*y%+f*x%+f*y%+f" % (c[0],c[1],c[2],c[3],c[4],c[5]))
|
|
for i in d["Residuals"]:
|
|
self.assertTrue(math.fabs(i) < 0.0001, "Too high residual %f" % math.fabs(i))
|
|
|
|
def testFitBad(self):
|
|
# symmetric
|
|
v = []
|
|
v.append(FreeCAD.Vector(0, 0, 0.0))
|
|
v.append(FreeCAD.Vector(1, 0, 0.0))
|
|
v.append(FreeCAD.Vector(2, 0, 0.0))
|
|
v.append(FreeCAD.Vector(0, 1, 0.0))
|
|
v.append(FreeCAD.Vector(1, 1, 1.0))
|
|
v.append(FreeCAD.Vector(2, 1, 0.0))
|
|
v.append(FreeCAD.Vector(0, 2, 0.0))
|
|
v.append(FreeCAD.Vector(1, 2, 0.0))
|
|
v.append(FreeCAD.Vector(2, 2, 0.0))
|
|
d = Mesh.polynomialFit(v)
|
|
c = d["Coefficients"]
|
|
# print ("Polynomial: f(x,y)=%f*x^2%+f*y^2%+f*x*y%+f*x%+f*y%+f" % (c[0],c[1],c[2],c[3],c[4],c[5]))
|
|
for i in d["Residuals"]:
|
|
self.assertFalse(math.fabs(i) < 0.0001, "Residual %f must be higher" % math.fabs(i))
|
|
|
|
def tearDown(self):
|
|
pass
|
|
|
|
|
|
class NastranReader(unittest.TestCase):
|
|
def setUp(self):
|
|
self.test_dir = join(FreeCAD.getHomePath(), "Mod", "Mesh", "App", "TestData")
|
|
|
|
def testEightCharGRIDElement(self):
|
|
m = Mesh.read(f"{self.test_dir}/NASTRAN_Test_GRID_CQUAD4.bdf")
|
|
self.assertEqual(m.CountPoints, 10)
|
|
self.assertEqual(m.CountFacets, 8) # Quads split into two triangles
|
|
|
|
def testDelimitedGRIDElement(self):
|
|
m = Mesh.read(f"{self.test_dir}/NASTRAN_Test_Delimited_GRID_CQUAD4.bdf")
|
|
self.assertEqual(m.CountPoints, 10)
|
|
self.assertEqual(m.CountFacets, 8) # Quads split into two triangles
|
|
|
|
def testSixteenCharGRIDElement(self):
|
|
m = Mesh.read(f"{self.test_dir}/NASTRAN_Test_GRIDSTAR_CQUAD4.bdf")
|
|
self.assertEqual(m.CountPoints, 4)
|
|
self.assertEqual(m.CountFacets, 2) # Quads split into two triangles
|
|
|
|
def testCTRIA3Element(self):
|
|
m = Mesh.read(f"{self.test_dir}/NASTRAN_Test_GRID_CTRIA3.bdf")
|
|
self.assertEqual(m.CountPoints, 3)
|
|
self.assertEqual(m.CountFacets, 1)
|
|
|
|
def tearDown(self):
|
|
pass
|
|
|
|
|
|
class MeshSubElement(unittest.TestCase):
|
|
def setUp(self):
|
|
self.mesh = Mesh.createBox(1.0, 1.0, 1.0)
|
|
|
|
def testCenterOfGravity(self):
|
|
c = self.mesh.CenterOfGravity
|
|
self.assertEqual(c, Base.Vector(0.0, 0.0, 0.0))
|
|
|
|
def testSubElements(self):
|
|
types = self.mesh.getElementTypes()
|
|
self.assertIn("Mesh", types)
|
|
self.assertIn("Segment", types)
|
|
|
|
def testCountSubElements(self):
|
|
self.assertEqual(self.mesh.countSubElements("Mesh"), 1)
|
|
self.assertEqual(self.mesh.countSubElements("Segment"), 0)
|
|
|
|
def testFacesFromSubElement(self):
|
|
element = self.mesh.getFacesFromSubElement("Mesh", 0)
|
|
self.assertIsInstance(element, tuple)
|
|
self.assertEqual(len(element), 2)
|
|
self.assertEqual(len(element[0]), 8)
|
|
self.assertEqual(len(element[1]), 12)
|
|
|
|
def testSegmentSubElement(self):
|
|
self.mesh.addSegment([0, 2, 4, 6, 8])
|
|
self.assertEqual(self.mesh.countSegments(), 1)
|
|
self.assertEqual(self.mesh.countSubElements("Segment"), 1)
|
|
element = self.mesh.getFacesFromSubElement("Segment", 0)
|
|
self.assertIsInstance(element, tuple)
|
|
self.assertEqual(len(element), 2)
|
|
self.assertEqual(len(element[0]), 7)
|
|
self.assertEqual(len(element[1]), 5)
|
|
segment = self.mesh.meshFromSegment(self.mesh.getSegment(0))
|
|
self.assertEqual(segment.CountPoints, 7)
|
|
self.assertEqual(segment.CountFacets, 5)
|
|
|
|
def tearDown(self):
|
|
pass
|
|
|
|
|
|
class MeshProperty(unittest.TestCase):
|
|
def setUp(self):
|
|
self.doc = FreeCAD.newDocument("MeshTest")
|
|
|
|
def tearDown(self):
|
|
FreeCAD.closeDocument(self.doc.Name)
|
|
|
|
def testMaterial(self):
|
|
mesh = self.doc.addObject("Mesh::Feature", "Sphere")
|
|
mesh.Mesh = Mesh.createBox(1.0, 1.0, 1.0)
|
|
len1 = int(mesh.Mesh.CountFacets / 2)
|
|
len2 = int(mesh.Mesh.CountFacets - len1)
|
|
material = {"transparency": [0.2] * len1 + [0.8] * len2}
|
|
material["binding"] = MeshEnums.Binding.PER_FACE
|
|
material["ambientColor"] = [(1, 0, 0)] * (len1 + len2)
|
|
material["diffuseColor"] = [(0, 1, 0)] * (len1 + len2)
|
|
material["specularColor"] = [(0, 0, 1)] * (len1 + len2)
|
|
material["emissiveColor"] = [(1, 1, 1)] * (len1 + len2)
|
|
material["shininess"] = [0.3] * (len1 + len2)
|
|
|
|
mesh.addProperty("Mesh::PropertyMaterial", "Material")
|
|
mesh.Material = material
|
|
|
|
TempPath = tempfile.gettempdir()
|
|
SaveName = TempPath + os.sep + "mesh_with_material.FCStd"
|
|
self.doc.saveAs(SaveName)
|
|
FreeCAD.closeDocument(self.doc.Name)
|
|
|
|
self.doc = FreeCAD.openDocument(SaveName)
|
|
mesh2 = self.doc.Sphere
|
|
material2 = mesh2.Material
|
|
|
|
self.assertEqual(int(material2["binding"]), int(MeshEnums.Binding.PER_FACE))
|
|
self.assertEqual(len(material2["ambientColor"]), len1 + len2)
|
|
self.assertEqual(len(material2["diffuseColor"]), len1 + len2)
|
|
self.assertEqual(len(material2["specularColor"]), len1 + len2)
|
|
self.assertEqual(len(material2["emissiveColor"]), len1 + len2)
|
|
self.assertEqual(len(material2["shininess"]), len1 + len2)
|
|
self.assertEqual(len(material2["transparency"]), len1 + len2)
|