///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
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/// @file test/gtx/gtx_intersect.cpp
/// @date 2013-10-25 / 2014-11-25
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////

#include <glm/gtx/intersect.hpp>

using namespace glm;

int test_LineLine() {
	int Error(0);

	Error += intersectLineLine(vec2(0, 2), vec2(2, 0), vec2(1, 1), vec2(1, 3)) ? 0 : 1;
	Error += intersectLineLine(vec2(-1, -1), vec2(1, 1), vec2(1, -1), vec2(-1, 1)) ? 0 : 1;
	Error += intersectLineLine(vec2(-1, -1), vec2(1, 1), vec2(-1, 1), vec2(1, -1)) ? 0 : 1;
	Error += !intersectLineLine(vec2(-1, 1), vec2(1, 1), vec2(-1, -1), vec2(1, -1)) ? 0 : 1;
	Error += !intersectLineLine(vec2(-1, 1), vec2(1, 1), vec2(0, 0), vec2(0, -1)) ? 0 : 1;

	return Error;
}

int test_LineLineProper() {
	int Error(0);

	Error += !intersectLineLineProper(vec2(0, 2), vec2(2, 0), vec2(1, 1), vec2(1, 3)) ? 0 : 1;
	Error += intersectLineLineProper(vec2(-1, -1), vec2(1, 1), vec2(1, -1), vec2(-1, 1)) ? 0 : 1;
	Error += intersectLineLineProper(vec2(-1, -1), vec2(1, 1), vec2(-1, 1), vec2(1, -1)) ? 0 : 1;
	Error += !intersectLineLineProper(vec2(-1, 1), vec2(1, 1), vec2(-1, -1), vec2(1, -1)) ? 0 : 1;
	Error += !intersectLineLineProper(vec2(-1, 1), vec2(1, 1), vec2(0, 0), vec2(0, -1)) ? 0 : 1;

	return Error;
}

int main()
{
	int Error(0);

	Error += test_LineLine();
	Error += test_LineLineProper();

	return Error;
}