Populate Mesh (Random points on mesh)

Functionality

The node distributes points on given mesh.

Volume:

Category

Spatial -> Populate Mesh

Inputs

• Verts - vertices of given mesh(es)

• Faces - faces of given mesh(es)

• Face weight (optional, one value per face of mesh) - any value per face, the less value the less number of vertices generates on current face. Values lessen then 0 will be changed to 0. This input can be used as mask. Just assign 0 values to faces on which there is no need in generation points.

• Number (one value per mesh) - number of vertices which should be distributed on given mesh

• Seed (one value per mesh) - seed for generation random vertices

Parameters

This node has the following parameters:

• Mode. The available options are:

  • Surface. Generate points on the surface of the mesh.

  • Volume. Generate points inside the volume of the mesh. The mesh is expected to represent a closed volume in this case. Recomend use [Modifiers->Modifier Change-> Recalculate Normals] before node.

  • Edges. Generate points on the edges of the mesh.

  The default option is Surface.

• Proportional. This parameter is available only when Mode parameter is set to Surface. If checked, then the number of points on each face will be proportional to the area of the face (and to the weight provided in the Face weight input). If not checked, then the number of points on each face will be only defined by Face weight input. Checked by default.

• All Triangles. Enable if the input mesh is made only of triangles (makes node faster). Available in Surfaces and Volume modes (in N-Panel)

• Safe Check. Disabling it will make node faster but polygon indices referring to unexisting points will crash Blender. Only available in Volume Mode. (in N-Panel)

• Implementation. Offers two implementations: * Numpy. Faster * Mathutils. Old implementation. Slower. Only available in Surface Mode (in N-Panel)

• Output Numpy. Output NumPy arrays in stead of regular list (makes node faster) Only available in Surface and Edges modes (in N-Panel)

Outputs

• Verts - random vertices on mesh

• Face / Edges index - indexes of faces/edges to which random vertices lays. This input is available only when Mode parameter is set to Surface or Edges.

Examples

• Generator-> Cricket

• Viz-> Viewer Draw

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Normals of faces of regular solid, located on random points

• Generator-> Line

• Generator->Generatots Extended-> Regular Solid

• Analyzers-> Origins

• List->List Struct-> List Item

• Viz-> Viewer Draw

• Text-> Stethoscope

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Distribution of points on sphere surface according distance to floating point

• Generator-> IcoSphere

• Generator-> Segment

• Modifiers->Modifier Change-> Polygon Boom

• Analyzers-> Nearest Point on Mesh

• Number-> Map Range

• Number-> List Input

• Vector-> Vector Polar Input

• List->List Struct-> List Levels

• List->List Struct-> List Sort

• List->List Struct-> List Item

• List->List Struct-> List First & Last

• Viz-> Viewer Draw

• Text-> Stethoscope

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Voronoi from unevenly distributed points on faces

• Generator-> Plane

• List->List Main-> List Length

• Number-> Random Num Gen

• Matrix-> Matrix In

• Transform-> Noise Displace

• Spacial-> Voronoi 2D

• Viz-> Viewer Draw