X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fgeometry.hpp;h=78fe5f5a2ce538deb943eee6c160f9369eb26c9f;hb=4ef32c5a4a5bdb6da8383f66d8265715eb2ed4f9;hp=e8ead98de83bc75b1b32481cca16673371c966b3;hpb=4d0ef1687987a0801469c7262f81efd36636605a;p=blank.git

diff --git a/src/geometry.hpp b/src/geometry.hpp
index e8ead98..78fe5f5 100644
--- a/src/geometry.hpp
+++ b/src/geometry.hpp
@@ -7,6 +7,12 @@
 
 namespace blank {
 
+constexpr float PI = 3.141592653589793238462643383279502884;
+constexpr float PI_0p25 = PI * 0.25f;
+constexpr float PI_0p5 = PI * 0.5f;
+constexpr float PI_1p5 = PI * 1.5f;
+constexpr float PI_2p0 = PI * 2.0f;
+
 struct AABB {
 	glm::vec3 min;
 	glm::vec3 max;
@@ -23,7 +29,14 @@ struct Ray {
 	glm::vec3 dir;
 };
 
-bool Intersection(const Ray &, const AABB &, const glm::mat4 &M, float *dist = nullptr);
+bool Intersection(
+	const Ray &,
+	const AABB &,
+	const glm::mat4 &M,
+	float *dist = nullptr,
+	glm::vec3 *normal = nullptr);
+
+bool CullTest(const AABB &box, const glm::mat4 &MVP);
 
 }