rayzor: src/vmath.cc annotate

rayzor

rayzor first commit

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sat, 05 Apr 2014 08:46:27 +0300
parents
children	a826bf0fb169

rev	line source
nuclear@0	1 #include "vmathmat.h"
nuclear@0	2 #include "vmath.h"
nuclear@0	3
nuclear@0	4 void Matrix4x4::lookat(const Vector3 &pos, const Vector3 &targ, const Vector3 &up)
nuclear@0	5 {
nuclear@0	6 Vector3 vk = normalize(targ - pos);
nuclear@0	7 Vector3 vj = normalize(up);
nuclear@0	8 Vector3 vi = normalize(cross(vk, vj));
nuclear@0	9 vj = cross(vi, vk);
nuclear@0	10
nuclear@0	11 Matrix4x4 m(
nuclear@0	12 vi.x, vi.y, vi.z, 0,
nuclear@0	13 vj.x, vj.y, vj.z, 0,
nuclear@0	14 -vk.x, -vk.y, -vk.z, 0,
nuclear@0	15 0, 0, 0, 1);
nuclear@0	16 translate(-pos.x, -pos.y, -pos.z);
nuclear@0	17 this = this * m;
nuclear@0	18 }