public static List <TessalatedShape> Triangulate(TopoDS.Shape topoShape)
{
TopExp.Explorer ex = new TopExp.Explorer(topoShape, TopAbs.ShapeEnum.FACE, TopAbs.ShapeEnum.SHAPE);
BRepMesh.General.Mesh(topoShape, 0.1);
List <TessalatedShape> faces = new List <TessalatedShape>();
// Loop all faces
while (ex.More())
{
TessalatedShape shape = new TessalatedShape();
TopoDS.Face F = TopoDS.General.Face(ex.Current());
TopLoc.Location location = new TopLoc.Location();
Poly.Triangulation triangulation = BRep.Tool.Triangulation(F, location);
Poly.Array1OfTriangle arrayOfTriangle = triangulation.Triangles();
TColgp.Array1OfPnt p3d = triangulation.Nodes();
shape.points = new gp.Pnt[p3d.Length()];
for (int i = 0; i < shape.points.Length; ++i)
{
shape.points[i] = p3d.Value(i + 1);
}
if (location != null)
{
gp.Trsf trsf = location.Transformation();
for (int i = 0; i < shape.points.Length; ++i)
{
trsf.Transforms(out shape.points[i].x, out shape.points[i].y, out shape.points[i].z);
}
}
TColgp.Array1OfPnt2d p2d = triangulation.UVNodes();
if (p2d != null)
{
shape.uvpoints = new gp.Pnt2d[p2d.Length()];
for (int i = 0; i < shape.uvpoints.Length; ++i)
{
shape.uvpoints[i] = p2d.Value(i + 1);
}
}
else
{
shape.uvpoints = null;
}
shape.triangles = new int[arrayOfTriangle.Length() * 3];
int l = arrayOfTriangle.Length();
for (int i = 0; i < l; ++i)
{
Poly.Triangle t = arrayOfTriangle.Value(i + 1);
shape.triangles[3 * i] = t.Value(1) - 1;
shape.triangles[3 * i + 1] = t.Value(2) - 1;
shape.triangles[3 * i + 2] = t.Value(3) - 1;
}
faces.Add(shape);
ex.Next();
}
return(faces);
}
public static List<TessalatedShape> Triangulate(TopoDS.Shape topoShape)
{
TopExp.Explorer ex = new TopExp.Explorer(topoShape, TopAbs.ShapeEnum.FACE, TopAbs.ShapeEnum.SHAPE);
BRepMesh.General.Mesh(topoShape, 0.1);
List<TessalatedShape> faces = new List<TessalatedShape>();
// Loop all faces
while (ex.More())
{
TessalatedShape shape = new TessalatedShape();
TopoDS.Face F = TopoDS.General.Face(ex.Current());
TopLoc.Location location = new TopLoc.Location();
Poly.Triangulation triangulation = BRep.Tool.Triangulation(F, location);
Poly.Array1OfTriangle arrayOfTriangle = triangulation.Triangles();
TColgp.Array1OfPnt p3d = triangulation.Nodes();
shape.points = new gp.Pnt[p3d.Length()];
for (int i = 0; i < shape.points.Length; ++i)
{
shape.points[i] = p3d.Value(i + 1);
}
if (location != null)
{
gp.Trsf trsf = location.Transformation();
for (int i = 0; i < shape.points.Length; ++i)
{
trsf.Transforms(out shape.points[i].x, out shape.points[i].y, out shape.points[i].z);
}
}
TColgp.Array1OfPnt2d p2d = triangulation.UVNodes();
if (p2d != null)
{
shape.uvpoints = new gp.Pnt2d[p2d.Length()];
for (int i = 0; i < shape.uvpoints.Length; ++i)
{
shape.uvpoints[i] = p2d.Value(i + 1);
}
}
else
{
shape.uvpoints = null;
}
shape.triangles = new int[arrayOfTriangle.Length() * 3];
int l = arrayOfTriangle.Length();
for (int i = 0; i < l; ++i)
{
Poly.Triangle t = arrayOfTriangle.Value(i + 1);
shape.triangles[3 * i] = t.Value(1) - 1;
shape.triangles[3 * i + 1] = t.Value(2) - 1;
shape.triangles[3 * i + 2] = t.Value(3) - 1;
}
faces.Add(shape);
ex.Next();
}
return faces;
}
