Triangle.cpp

/*
 * This file is part of Bubba-3D.
 *
 * Bubba-3D is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Bubba-3D is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Bubba-3D. If not, see http://www.gnu.org/licenses/.
 */
#include "Triangle.h"

using namespace chag;

Triangle::Triangle(float3 p1, float3 p2, float3 p3) 
    :p1(p1), p2(p2), p3(p3)
{
    box = calculateBoundingBox();
}

Triangle::~Triangle(void) {

}

BoundingBox* Triangle::getBoundingBox(){
    return &box;
}

BoundingBox Triangle::calculateBoundingBox(){
    float maxX = fmax(fmax(p1.x, p2.x), p3.x);
    float maxY = fmax(fmax(p1.y, p2.y), p3.y);
    float maxZ = fmax(fmax(p1.z, p2.z), p3.z);

    float minX = fmin(fmin(p1.x, p2.x), p3.x);
    float minY = fmin(fmin(p1.y, p2.y), p3.y);
    float minZ = fmin(fmin(p1.z, p2.z), p3.z);

    BoundingBox b;

    b.points[0] = make_vector(maxX,  maxY, maxZ);
    b.points[1] = make_vector(maxX,  minY, maxZ);
    b.points[2] = make_vector(minX, maxY, maxZ);
    b.points[3] = make_vector(minX, minY, maxZ);

    b.points[4] = make_vector(maxX, maxY, minZ);
    b.points[5] = make_vector(maxX, minY, minZ);
    b.points[6] = make_vector(minX, maxY, minZ);
    b.points[7] = make_vector(minX, minY, minZ);

    return b;
}