mirror of
https://github.com/cjcliffe/CubicSDR.git
synced 2024-11-27 14:09:11 -05:00
41 lines
922 B
C++
41 lines
922 B
C++
//
|
|
// triangle.h
|
|
// CubicVR2
|
|
//
|
|
// Created by Charles J. Cliffe on 2013-02-22.
|
|
// Copyright (c) 2013 Charles J. Cliffe. All rights reserved.
|
|
//
|
|
|
|
#ifndef __CubicVR2__triangle__
|
|
#define __CubicVR2__triangle__
|
|
|
|
#include <iostream>
|
|
#include "vec3.h"
|
|
|
|
namespace CubicVR {
|
|
|
|
struct triangle {
|
|
static vec3 normal(vec3 pt1, vec3 pt2, vec3 pt3) {
|
|
|
|
__float v10 = pt1[0] - pt2[0];
|
|
__float v11 = pt1[1] - pt2[1];
|
|
__float v12 = pt1[2] - pt2[2];
|
|
__float v20 = pt2[0] - pt3[0];
|
|
__float v21 = pt2[1] - pt3[1];
|
|
__float v22 = pt2[2] - pt3[2];
|
|
|
|
vec3 mOut;
|
|
|
|
mOut[0] = v11 * v22 - v12 * v21;
|
|
mOut[1] = v12 * v20 - v10 * v22;
|
|
mOut[2] = v10 * v21 - v11 * v20;
|
|
|
|
return mOut;
|
|
};
|
|
};
|
|
|
|
}
|
|
|
|
|
|
#endif /* defined(__CubicVR2__triangle__) */
|