Null To Weightmap

Updated: 10 Feb 2025

Converts a position to a weightmap

Example .dfx

Method #

This deformer node uses the distances from a set of input Nulls, or a transform array, to generate per-vertex or per-polygon weightmap for the parent mesh. These can then be used to vary the strength of Deformers on the parent mesh.

The output from this node is a vertex weightmap which is unique to the parent mesh, so can’t be used to influence other meshes.

Node placement is important! Weightmaps are generated following the deformer processing stack, so make sure to place the weightmap at some point before the deformer its applied to.

Parameters

Attributes

These properties control the core behaviours of the node.

Parameter	Details
Vertex Source Mode	How vertexes are selected to be used by the deformer. Vertex Positions : Vertexes are chosen based on their positions in the scene. Chunks : Vertexes are chosen based on the enclosed section of the mesh they are used.
Per-Polygon Weightmap	Determines whether the weightmap should specify a value per-polygon or per-vertex.
Max Radius	The falloff radius from each null.
Gain	Scale the generated value.
Offset	Offset the generated value.
Sharpness	Ramps the sharpness of the generated value to a power.
Min Value	Limit the minimum value generated.
Max Value	Limit the maximum value generated.
Invert	Invert the generated weightmap values.
Show Weightmap	Visualise the weightmap as vertex colours on the source geometry

Inputs

Name	Description	Typical Input
Nulls	The geometry nulls used to define the weightmap.	Null
Transform Modifiers	Apply the transforms of another node to this node.	Null
Target Node	Modifiy the rotations of the node to always direct the z axis towards the input.	Null
Local Transform Override	Apply the transforms of another node to this node, relative to its parent.	Null