curvature Struct Reference

#include <hit.h>

Data Fields
vect_t	crv_pdir
	Principle direction. More...
fastf_t	crv_c1
	curvature in principle dir More...
fastf_t	crv_c2
	curvature in other direction More...

Detailed Description

Information about curvature of the surface at a hit point. The principal direction pdir has unit length and principal curvature c1. |c1| <= |c2|, i.e. c1 is the most nearly flat principle curvature. A POSITIVE curvature indicates that the surface bends TOWARD the (outward pointing) normal vector at that point. c1 and c2 are the inverse radii of curvature. The other principle direction is implied: pdir2 = normal x pdir1.

Definition at line 118 of file hit.h.

Field Documentation

crv_pdir

vect_t crv_pdir

Principle direction.

Definition at line 119 of file hit.h.

crv_c1

fastf_t crv_c1

curvature in principle dir

Definition at line 120 of file hit.h.

crv_c2

fastf_t crv_c2

curvature in other direction

Definition at line 121 of file hit.h.

---

The documentation for this struct was generated from the following file:

• include/rt/hit.h