Houdini 20.5 Nodes Geometry nodes

Weight Array Interpolate geometry node

Evaluates weight arrays specified on points on a mesh at a given point within a primitive.

Given primitive index and primitive uv (prim & primuv) attributes on points, this operator interpolates index & weight arrays pairs from the second input.

You can use this to compute index & weight array pairs for points scattered on a mesh with index & weight attributes.

The resulting arrays are usually the union of indices & weights contained in the source primitive’s points. Indices found on multiple points within a primimtive will be combined into one entry with their weights summed. If the primitive uv coordinates result in a weight of zero for any points in the primitive, the weights of those points will be discarded. The weights of each point are multiplied by the point’s weight.

Parameters

Prim Attribute

Integer attribute specifying the primitive to interpolate.

Prim UV Attribute

Vector attribute specyfing the coordinates within the primitive specified by Prim Attribute.

Index Attribute

Integer or string array attribute. This may either be a vertex or point attribute, but must be the same class as the Weight Attribute.

Weight Attribute

Float array attribute. This may either be a vertex or point attribute, but must be the same class as the Index Attribute.

See also

Geometry nodes