demotool/glm/test/gtx/gtx_intersect.cpp

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2017-09-30 10:26:30 +02:00
#define GLM_ENABLE_EXPERIMENTAL
#include <glm/glm.hpp>
#include <glm/gtc/epsilon.hpp>
#include <glm/gtx/intersect.hpp>
int test_intersectRayTriangle()
{
int Error = 0;
glm::vec3 const Orig(0, 0, 2);
glm::vec3 const Dir(0, 0, -1);
glm::vec3 const Vert0(0, 0, 0);
glm::vec3 const Vert1(-1, -1, 0);
glm::vec3 const Vert2(1, -1, 0);
glm::vec2 BaryPosition(0);
float Distance = 0;
bool const Result = glm::intersectRayTriangle(Orig, Dir, Vert0, Vert1, Vert2, BaryPosition, Distance);
Error += glm::all(glm::epsilonEqual(BaryPosition, glm::vec2(0), std::numeric_limits<float>::epsilon())) ? 0 : 1;
Error += glm::abs(Distance - 2.f) <= std::numeric_limits<float>::epsilon() ? 0 : 1;
Error += Result ? 0 : 1;
return Error;
}
int main()
{
int Error = 0;
Error += test_intersectRayTriangle();
return Error;
}