This custom HDA reimplements heightfield scattering with more options so that an environment artist can skirt assets on rockfaces. Vertical growth control allows an artist to expand the point scattering above or below the mask. Vertical clipping removes points vertically on the mask. These are used in conjunction with multiple skirting nodes so that skirting can be done in layers.
*Note: The rock asset .fbx and prefab scales in this demo are not aligned, which is why the scale/spacing isn't exact between Houdini/Unity. Correctly created assets are necessary.
Scatters points on mask. Requires a reference .fbx to average bounding box size for spacing out points.
Has vertical growth and clipping controls so that multiple skirting nodes can be used to "layer" assets.
Heightfield painting can also be used. Real time visualization using custom visualizer.