def test_export_to_x3d_TriangleSet(self):
""" 3rd test : export a sphere to an X3D TriangleSet triangle mesh """
a_sphere = BRepPrimAPI_MakeBox(10., 10., 10.).Shape()
sphere_tess = ShapeTesselator(a_sphere)
sphere_tess.Compute()
sphere_triangle_set_string = sphere_tess.ExportShapeToX3DTriangleSet()
self.assertTrue(sphere_triangle_set_string.startswith("<TriangleSet"))
self.assertTrue("0 10 0" in sphere_triangle_set_string) # a vertex
self.assertTrue("0 0 1" in sphere_triangle_set_string) # a normal
def compute(self):
shape_tesselator = ShapeTesselator(self._shape)
shape_tesselator.Compute(compute_edges=self._export_edges,
mesh_quality=self._mesh_quality,
parallel=True)
self._triangle_sets.append(
shape_tesselator.ExportShapeToX3DTriangleSet())
# then process edges
if self._export_edges:
# get number of edges
nbr_edges = shape_tesselator.ObjGetEdgeCount()
for i_edge in range(nbr_edges):
edge_point_set = []
nbr_vertices = shape_tesselator.ObjEdgeGetVertexCount(i_edge)
for i_vert in range(nbr_vertices):
edge_point_set.append(
shape_tesselator.GetEdgeVertex(i_edge, i_vert))
ils = export_edge_to_indexed_lineset(edge_point_set)
self._line_sets.append(ils)