goat3d: libs/vmath/ray.cc annotate

goat3d

ops, screwed up the GOAT3DAPI define

author	John Tsiombikas <nuclear@member.fsf.org>
date	Thu, 05 Dec 2013 18:49:19 +0200
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rev	line source
nuclear@27	1 #include "ray.h"
nuclear@27	2 #include "vector.h"
nuclear@27	3
nuclear@27	4 scalar_t Ray::env_ior = 1.0;
nuclear@27	5
nuclear@27	6 Ray::Ray()
nuclear@27	7 {
nuclear@27	8 ior = env_ior;
nuclear@27	9 energy = 1.0;
nuclear@27	10 time = 0;
nuclear@27	11 iter = 0;
nuclear@27	12 }
nuclear@27	13
nuclear@27	14 Ray::Ray(const Vector3 &origin, const Vector3 &dir)
nuclear@27	15 {
nuclear@27	16 this->origin = origin;
nuclear@27	17 this->dir = dir;
nuclear@27	18 ior = env_ior;
nuclear@27	19 energy = 1.0;
nuclear@27	20 time = 0;
nuclear@27	21 iter = 0;
nuclear@27	22 }
nuclear@27	23
nuclear@27	24 void Ray::transform(const Matrix4x4 &xform)
nuclear@27	25 {
nuclear@27	26 Matrix4x4 upper = xform;
nuclear@27	27 upper[0][3] = upper[1][3] = upper[2][3] = upper[3][0] = upper[3][1] = upper[3][2] = 0.0;
nuclear@27	28 upper[3][3] = 1.0;
nuclear@27	29
nuclear@27	30 dir.transform(upper);
nuclear@27	31 origin.transform(xform);
nuclear@27	32 }
nuclear@27	33
nuclear@27	34 Ray Ray::transformed(const Matrix4x4 &xform) const
nuclear@27	35 {
nuclear@27	36 Ray foo = *this;
nuclear@27	37 foo.transform(xform);
nuclear@27	38 return foo;
nuclear@27	39 }