src/invert.h

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013 - 2020 Teemu Piippo
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once
#include "src/basics.h"
#include "src/gl/common.h"

enum Axis { X, Y, Z };

namespace math
{
	glm::mat4 flipmatrix(Axis dimension);
}

constexpr void invert(Quadrilateral& quad)
{
	std::swap(quad.p1, quad.p3);
}

constexpr Quadrilateral inverted(Quadrilateral quad)
{
	invert(quad);
	return quad;
}

constexpr void invert(Triangle& tri)
{
	std::swap(tri.p1, tri.p2);
}

constexpr Triangle inverted(Triangle tri)
{
	invert(tri);
	return tri;
}

namespace gl
{
	void invert(PolygonElement &polygon);
}

using gl::invert;