Practical VEX Techniques for Geometry Manipulation and Particle Control in Houdini
Bounding Box Based Rotation
vector bbox_low, bbox_high;
getbbox(bbox_low, bbox_high);
float spin_limit = 4;
matrix3 base_mtx = ident();
float spin_factor = fit(@P.y, bbox_low.y, bbox_high.y, 0, 1);
rotate(base_mtx, spin_factor * spin_limit, {0, 1, 0});
@P *= base_mtx;
Custom Parameter UI Definition
#pragma label oper_mode "Operation" ...
Posted on Wed, 20 May 2026 02:50:15 +0000 by kanika