1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/vmath.cc	Sat Apr 05 08:46:27 2014 +0300
     1.3 @@ -0,0 +1,18 @@
     1.4 +#include "vmathmat.h"
     1.5 +#include "vmath.h"
     1.6 +
     1.7 +void Matrix4x4::lookat(const Vector3 &pos, const Vector3 &targ, const Vector3 &up)
     1.8 +{
     1.9 +	Vector3 vk = normalize(targ - pos);
    1.10 +	Vector3 vj = normalize(up);
    1.11 +	Vector3 vi = normalize(cross(vk, vj));
    1.12 +	vj = cross(vi, vk);
    1.13 +
    1.14 +	Matrix4x4 m(
    1.15 +			vi.x, vi.y, vi.z, 0,
    1.16 +			vj.x, vj.y, vj.z, 0,
    1.17 +			-vk.x, -vk.y, -vk.z, 0,
    1.18 +			0, 0, 0, 1);
    1.19 +	translate(-pos.x, -pos.y, -pos.z);
    1.20 +	*this = *this * m;
    1.21 +}