Frustum math from raylib extras.

include/frustum.h

@@ -0,0 +1,62 @@
+/**********************************************************************************************
+*
+*   raylibExtras * Utilities and Shared Components for Raylib
+*
+*   RLSprite * Simple Sprite Managment System for Raylib
+*
+*   LICENSE: MIT
+*
+*   Copyright (c) 2020 Jeffery Myers
+*
+*   Permission is hereby granted, free of charge, to any person obtaining a copy
+*   of this software and associated documentation files (the "Software"), to deal
+*   in the Software without restriction, including without limitation the rights
+*   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+*   copies of the Software, and to permit persons to whom the Software is
+*   furnished to do so, subject to the following conditions:
+*
+*   The above copyright notice and this permission notice shall be included in all
+*   copies or substantial portions of the Software.
+*
+*   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+*   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+*   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+*   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+*   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+*   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+*   SOFTWARE.
+*
+**********************************************************************************************/
+
+#pragma once
+#ifndef FRUSTUM_H
+#define FRUSTUM_H
+
+#include "raylib.h"
+#include "raymath.h"
+#include "frustum.h"
+
+typedef enum
+{
+    Back = 0,
+    Front = 1,
+    Bottom = 2,
+    Top = 3,
+    Right = 4,
+    Left = 5,
+    MAX = 6
+}FrustumPlanes;
+
+typedef struct
+{
+    Vector4 Planes[6];
+}Frustum;
+
+// RLAPI void ExtractFrustum(Frustum* frustrum);
+RLAPI void ExtractFrustum(Frustum* frustum, Matrix projection, Matrix modelview);
+RLAPI bool PointInFrustumV(Frustum* frustrum, Vector3 position);
+RLAPI bool SphereInFrustumV(Frustum* frustrum, Vector3 position, float radius);
+
+RLAPI bool AABBoxInFrustum(Frustum* frustrum, Vector3 min, Vector3 max);
+
+#endif //FRUSTUM_H

include/rmath.h

@@ -152,3 +152,8 @@ int lmathQuaternionFromEuler( lua_State* L );
 int lmathQuaternionToEuler( lua_State* L );
 int lmathQuaternionTransform( lua_State* L );
 int lmathQuaternionEquals( lua_State* L );
+/* Frustum */
+int lmathExtractFrustum( lua_State* L );
+int lmathPointInFrustum( lua_State* L );
+int lmathSphereInFrustum( lua_State* L );
+int lmathAABBInFrustum( lua_State* L );