Fixed intersectRayTriangle #6

test/gtx/gtx_intersect.cpp

@@ -1,9 +1,34 @@
 #define GLM_ENABLE_EXPERIMENTAL
+#include <glm/glm.hpp>
+#include <glm/gtc/epsilon.hpp>
 #include <glm/gtx/intersect.hpp>
 
-int main()
+int test_intersectRayTriangle()
 {
-	int Error(0);
+	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;
 }