Houdini 20.0 Nodes Geometry nodes

Labs Dirt Skirt geometry node

Create a geometry 'skirt' where an object and ground plane intersect, to be used as a soft blend in a game engine.

This node creates dirt shirts where an object and a ground plane intersects.

Parameters

Object Skirt

Distance

Distance on the object the skirt will reach

Noise Frequency

Noise on the object portion of the skirt. High Frequency means tighter noise

Noise Intensity

Strength of the noise on the object portion of the skirt

Ground Skirt

Distance

Distance on the ground the skirt will reach

Noise Frequency

Noise on the ground portion of the skirt. High Frequency means tighter noise

Noise Intensity

Strength of the noise on the ground portion of the skirt

Tweak Parameters

Relaxation Iterations

Amount to relax the inner surface of the skirt. Higher values will even out the topology, creating a softer blend.

Ground Offset

Vertical height to offset start of dirt skirt above the ground geometry.

Rotate X

Rotation on X to slump the dirt skirt higher on +Z or -Z.

Rotate Z

Rotation on Z to slump the dirt skirt higher on +X or -X.

Add Vertex Color

When enabled will add a gradient to the edges of the dirt skirt. When exported to a game engine this can be used as alpha fade, or a mask to blend between materials used for the object and the ground.

Clean Up

Target Polycount

Total amount of polygons to be used in the skirt, default is 1000.

Delete Small Area Threshold

Area threshold used to identify small triangles and delete them.

Z Offset

Amount to push all points along their normals, to avoid intersections with the ground or object mesh.

Keep Ground Mesh

When enabled will include the ground mesh in the output geometry.

Keep Object Mesh

When enabled will include the object mesh in the output geometry.

Geometry nodes