Calculate Normals

Functionality

This node calculates normals for faces and edges of given mesh. Normals can be calculated even for meshes without faces, i.e. curves.

Inputs

This node has the following inputs:

• Vertices

• Polygons

Options

Offers different calculation methods:

• Bmesh (standard Blender, slowest),

• Mean Weighted Equally (Fastest),

• Mean Weighted Based on Triangle Area

• Mean Weighted Edge Length Reciprocal

• Mean Weighted by Sine

• Mean Weighted by Sine/Edge Length

• Mean Weighted Area

• Mean Weighted Angle*Area

• Mean Weighted Sine*Area

• Mean Weighted Edge Length

• Mean Weighted 1/Edge Length

• Mean Weighted 1/sqrt(Edge Length)

Outputs

This node has the following outputs:

• Face Normals. Normals of faces. This output will be empty if Polygons input is empty.

• Vertex Normals. Normals of vertices.

Examples of usage

Move each face of cube along its normal:

• Generator-> Box

• Generator-> Segment

• Transform-> Move

• Analyzers-> Origins

• Modifiers->Modifier Change-> Polygon Boom

• Viz-> Viewer Draw

TODO: NEED REPLAY

Next examples cannot be replayed with new node. No input edge. Need check:

Visualization of vertex normals for bezier curve:

Normals can be also calculated for closed curves: