Calculate Mesh Tension

Calculates mesh tension and add it back onto input deforming mesh as primvar

Installation

To use this Node, you must enable omni.deform.tensionColor in the Extension Manager.

Inputs

Name	Type	Description	Default
frame	float	input frame	0
prim_path	string	input deforming mesh(es)
rest_prim	token	input rest mesh
Compression Color (tcolor_a)	colorf[3]	The Compression Color	[0, 0, 1]
Neutral Color (tcolor_b)	colorf[3]	The Neutral Color	[0, 1, 0]
Stretching Color (tcolor_c)	colorf[3]	The Stretching Color	[1, 0, 0]
Tension Multiplier (tcolor_m)	float	The Tension Multiplier	1.0
Tension Blur (tcolor_mean_blur)	bool	Blur tension	True
Tension Blur Count (tcolor_mean_blur_count)	int	Blur tension	1
execIn	execution	exec

Outputs

Name	Type	Description	Default
execOut	execution	exec

Example Usage

Here’s a sample tension node in action:

In this case, blue is compression, and red is stretching.

How to Use

Enable the omni.deform.tensionColor:

Select a rest (neutral) mesh. Then select a deforming mesh:

Run the Animation > Deformer > Create Tension Color command:

The tension node with the necessary information will be created:

The tension node will add a primvars:omni:tensionColor primvar onto the deforming mesh:

To access the primvar in materials, add a Primvar Lookup Color node in MDL graph:

Make sure the primvar name set on the node is omni:tensionColor:

Then use the accessed primvar as color on materials: