William Smith

Create a Sphere at the impact spot (your red circle center).

On your fractureable geo, add an Attribute Wrangle to paint a falloff “density”:

vector C = chv("center"); // impact center
float R = ch("radius"); // inner radius (most detail)
float F = ch("falloff"); // soft edge
float d = distance(@P, C);
float t = smoothstep(R, R+F, d); // 0 near center → 1 outside
@density = mix(chf("inner"), chf("outer"), t); // e.g. inner=10, outer=0.2


(Promote the parms; set center to your sphere position.)

Scatter SOP on the same surface:

Enable Density Attribute = density.

Adjust Global Density Scale and inner/outer to taste.

Feed those points into Voronoi Fracture (or RBD Material Fracture’s “Guides/Impact Points”).

That error usually pops up because Houdini is detecting the Red Giant / Maxon plugin hooks on startup even if it doesn’t use Magic Bullet Looks itself. A couple things you can try:

Make sure you’ve fully removed the Red Giant plugins (check both the Program Files\Adobe\Common\Plug-ins and any Documents\houdiniXX.X plugin folders).

Clear your Houdini environment variables (houdini.env) if there’s any reference to Red Giant/Maxon.

Run Maxon App and make sure there are no lingering services trying to load Looks.

If nothing else, a clean uninstall of Maxon/Red Giant and then reinstall Houdini usually clears it.

It won’t hurt Houdini, but cleaning out the leftover plugin hooks should stop the dialog.