the final rename

src/maths/rays.hpp

@@ -0,0 +1,77 @@
+#ifndef MATHS_RAYS_HPP_
+#define MATHS_RAYS_HPP_
+
+#include "aabb.hpp"
+#include "glm/glm.hpp"
+#define GLM_ENABLE_EXPERIMENTAL
+#include "glm/gtx/hash.hpp"
+
+#include <array>
+
+using rayvec3 = glm::highp_dvec3;
+using rayvec2 = glm::highp_dvec2;
+using scalar_t = double;
+
+enum class RayRelation {
+    Embed=2, Intersect=1, Parallel=0, None=0
+};
+
+class AABBFaces {
+	static const unsigned char AABBFACES_COUNT = 6;
+public:
+	std::array<std::pair<rayvec3, rayvec2>, AABBFACES_COUNT> faces; // every face is min-point and opposite corner point
+
+	AABBFaces(){};
+	AABBFaces(const rayvec3& parentBoxPos, const AABB& parentBox);
+};
+
+class Ray {
+public:
+	rayvec3 origin;
+	rayvec3 dir;
+
+	Ray(const rayvec3& rayOrigin,
+		const rayvec3& rayDir);
+
+	RayRelation isIntersectsYZFace(
+		const rayvec3& faceMin,
+		const rayvec2& faceOppositeCorner);	
+	RayRelation isIntersectsXZFace(
+		const rayvec3& faceMin,
+		const rayvec2& faceOppositeCorner);	
+	RayRelation isIntersectsXYFace(
+		const rayvec3& faceMin,
+		const rayvec2& faceOppositeCorner);
+
+///returns normal and distance
+	RayRelation intersectYZFace( 
+		const rayvec3& faceMin,
+		const rayvec2& faceOppositeCorner,
+		glm::ivec3& normal_ret,
+		scalar_t& distance_ret);
+	RayRelation intersectXZFace(
+		const rayvec3& faceMin,
+		const rayvec2& faceOppositeCorner,
+		glm::ivec3& normal_ret,
+		scalar_t& distance_ret);
+	RayRelation intersectXYFace(
+		const rayvec3& faceMin,
+		const rayvec2& faceOppositeCorner,
+		glm::ivec3& normal_ret,
+		scalar_t& distance_ret);
+
+	RayRelation intersectAABB(
+		const rayvec3& boxPos,
+		const AABB& box,
+		float maxDist,
+		glm::ivec3& normal_ret,
+		scalar_t& distance_ret);
+
+	RayRelation intersectAABBFaces( // calculates only normal and distance
+		const AABBFaces& boxFaces,
+		float maxDist,
+		glm::ivec3& normal_ret,
+		scalar_t& distance_ret);
+};
+
+#endif // SRC_VOXNATHS_HPP_