k3d/share/shaders/k3d_volcube.sl:209:    vector step_obj     = (outPoint_obj-inPoint_obj)/numOfSteps;
k3d/share/shaders/k3d_volcube.sl:210:    vector step_cur     = vtransform("object","current",step_obj);
k3d/share/shaders/k3d_volcube.sl:221:    point  Pcur_obj     = inPoint_obj + jitter * step_obj;
k3d/share/shaders/k3d_volcube.sl:296:	Pcur_obj += step_obj;
