1 #include "vmathmat.h"

2 #include "vmath.h"

3

4 void Matrix4x4::lookat(const Vector3 &pos, const Vector3 &targ, const Vector3 &up)

5 {

6 Vector3 vk = normalize(targ - pos);

7 Vector3 vj = normalize(up);

8 Vector3 vi = normalize(cross(vk, vj));

9 vj = cross(vi, vk);

10

11 Matrix4x4 m(

12 vi.x, vi.y, vi.z, 0,

13 vj.x, vj.y, vj.z, 0,

14 -vk.x, -vk.y, -vk.z, 0,

15 0, 0, 0, 1);

16 translate(-pos.x, -pos.y, -pos.z);

17 *this = *this * m;

18 }