Triangulate Mesh#

https://user-images.githubusercontent.com/14288520/199673451-2f024398-99ef-4e8c-a946-23eb64fb0edd.png

This node testing is in progress, so it can be found under Beta menu

Functionality#

This node applies Triangulate operator (Ctrl+T in normal mode) to the mesh. It can triangulate all faces or only selected ones.

https://user-images.githubusercontent.com/14288520/199745393-91f9f48a-b2a4-40d5-b58a-eeb814f4caea.png

This node is useful mainly when other node generates ngons, especially not-convex ones.

https://user-images.githubusercontent.com/14288520/199753486-0e465534-02e6-4eb8-827c-7dfa7a55f813.png

Inputs#

This node has the following inputs:

  • Vertices

  • Edges

  • Polygons

  • FaceData. List containing an arbitrary data item for each face of input mesh. For example, this may be used to provide material indexes of input mesh faces. Optional input.

  • Mask. List of boolean or integer flags. Zero or False means do not triangulate face with corresponding index. If this input is not connected, then all faces will be triangulated.

Parameters#

This node has the following parameters:

  • Quads mode. Method of quads processing. Available modes are:
    • Beauty. Split the quads in nice triangles, slower method.

    • Fixed. Split the quads on the 1st and 3rd vertices.

    • Fixed Alternate. Split the quads on the 2nd and 4th vertices.

    • Shortest Diagonal. Split the quads based on the distance between the vertices.

  • Ngon mode. Method of ngons processing. Available modes are:
    • Beauty. Arrange the new triangles nicely, slower method.

    • Scanfill. Split the ngons using a scanfill algorithm.

Outputs#

This node has the following outputs:

  • Vertices. This is just a copy of input vertices for convenience.

  • Edges.

  • Polygons.

  • FaceData. List containing data items from the FaceData input, which contains one item for each output mesh face.

  • NewEdges. This contains only new edges created by triangulation procedure.

  • NewPolys. This contains only new faces created by triangulation procedure. If Mask input is not used, then this output will contain the same as Polygons output.

See also#

Examples of usage#

Triangulated cube:

https://user-images.githubusercontent.com/14288520/199747483-94750b00-c600-4bc9-847c-294105eca9ee.png

Triangulate only two faces of extruded polygon:

https://user-images.githubusercontent.com/14288520/199759356-78797993-1d9d-4fb8-b3fc-e33b9563c040.png