X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fgeometry.hpp;h=df75f22bf66720d31c6b4d4e0c08b83cb7fb312d;hb=83ed3de28841d1eecfca39ff540e804cf6809b32;hp=e8ead98de83bc75b1b32481cca16673371c966b3;hpb=4d0ef1687987a0801469c7262f81efd36636605a;p=blank.git

diff --git a/src/geometry.hpp b/src/geometry.hpp
index e8ead98..df75f22 100644
--- a/src/geometry.hpp
+++ b/src/geometry.hpp
@@ -7,11 +7,17 @@
 
 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;
 
-	void Adjust() {
+	void Adjust() noexcept {
 		if (max.x < min.x) std::swap(max.x, min.x);
 		if (max.y < min.y) std::swap(max.y, min.y);
 		if (max.z < min.z) std::swap(max.z, min.z);
@@ -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) noexcept;
+
+bool CullTest(const AABB &box, const glm::mat4 &MVP) noexcept;
 
 }