public Vector3f scalar_multiply(Vector3f A, float d)
{
scalar_multiply (A.v, d, v);
return this;
}
public Vector3f scalar_divide(Vector3f A, float d)
{
scalar_divide (A.v, d, v);
return this;
}
public Vector3f scalar_minus(Vector3f A, float d)
{
scalar_minus (A.v, d, v);
return this;
}
public Vector3f normalize(Vector3f A)
{
normalize (A.v, v);
return this;
}
public Vector3f negate(Vector3f A)
{
negate (A.v, v);
return this;
}
public Vector3f minus(Vector3f A, Vector3f B)
{
minus (A.v, B.v, v);
return this;
}
public Vector3f cross(Vector3f A, Vector3f B)
{
float [] C = v;
if (A == this || B == this) C = new float [3];
v = cross (A.v, B.v, C);
return this;
}
private void triangle(float [] x0, float [] x1, float [] x2, int type)
{
// TODO subdivide
Vector3f A = new Vector3f (x0).normalize ();
Vector3f B = new Vector3f (x1).normalize ();
Vector3f C = new Vector3f (x2).normalize ();
Vector3f AB = new Vector3f ().minus (A, B);
Vector3f AC = new Vector3f ().minus (A, C);
Vector3f n = new Vector3f ().cross (AC, AB).normalize ();
gl.begin (type);
gl.normal3fv (n.v);
gl.vertex3fv (x0);
gl.vertex3fv (x1);
gl.vertex3fv (x2);
gl.end ();
}