public Mat4f toMat()
{
Mat4f res = new Mat4f();
float wx, wy, wz, xx, yy, zz, yz, xy, xz, x2, y2, z2;
x2 = this.i + this.i;
y2 = this.j + this.j;
z2 = this.k + this.k;
xx = this.i * x2; xy = this.i * y2; xz = this.i * z2;
yy = this.j * y2; yz = this.j * z2; zz = this.k * z2;
wx = this.r * x2; wy = this.r * y2; wz = this.r * z2;
res.data[0][0] = 1.0f - (yy + zz); res.data[0][1] = xy - wz;
res.data[0][2] = xz + wy; res.data[0][3] = 0.0f;
res.data[1][0] = xy + wz; res.data[1][1] = 1.0f - (xx + zz);
res.data[1][2] = yz - wx; res.data[1][3] = 0.0f;
res.data[2][0] = xz - wy; res.data[2][1] = yz + wx;
res.data[2][2] = 1.0f - (xx + yy); res.data[2][3] = 0.0f;
res.data[3][0] = 0.0f; res.data[3][1] = 0.0f;
res.data[3][2] = 0.0f; res.data[3][3] = 1.0f;
return(res);
}
public static Mat4f operator +(Mat4f m1, Mat4f m2)
{
Mat4f res = new Mat4f();
res.data[0] = m1.data[0] + m2.data[0];
res.data[1] = m1.data[1] + m2.data[1];
res.data[2] = m1.data[2] + m2.data[2];
res.data[3] = m1.data[3] + m2.data[3];
return(res);
}
public static Mat4f lookAtLH(Vec3f eye, Vec3f center, Vec3f up)
{
Vec3f f = (center - eye).normal();
Vec3f s = (f * up).normal();
Vec3f u = s * f;
Mat4f Result = new Mat4f();
Result.data[0][0] = s.x;
Result.data[1][0] = s.y;
Result.data[2][0] = s.z;
Result.data[0][1] = u.x;
Result.data[1][1] = u.y;
Result.data[2][1] = u.z;
Result.data[0][2] = f.x;
Result.data[1][2] = f.y;
Result.data[2][2] = f.z;
Result.data[3][0] = -(s.dot(eye));
Result.data[3][1] = -(u.dot(eye));
Result.data[3][2] = -(f.dot(eye));
return(Result);
}
public void fromMat(Mat4f other)
{
}