mat4 lightweight binds

game/lua/mat4.lua

@@ -0,0 +1,81 @@
+local ffi = require("ffi")
+
+ffi.cdef
+[[
+	typedef struct
+	{
+		float r1c1;
+		float r2c1;
+		float r3c1;
+		float r4c1;
+		float r1c2;
+		float r2c2;
+		float r3c2;
+		float r4c2;
+		float r1c3;
+		float r2c3;
+		float r3c3;
+		float r4c3;
+		float r1c4;
+		float r2c4;
+		float r3c4;
+		float r4c4;
+	} Mat4;
+
+	Mat4*				mat4(float r1c1, float r2c1, float r3c1, float r1c2, float r2c2, float r3c2, float r1c3, float r2c3, float r3c3);
+						
+	Mat4*				mat4_add(Mat4* self, Mat4* m);
+
+	Mat4*				mat4_subtract(Mat4* self, Mat4* m);
+
+	Mat4*				mat4_multiply(Mat4* self, Mat4* m);
+
+	Mat4*				mat4_multiply_by_scalar(Mat4* self, float k);
+
+	Mat4*				mat4_divide_by_scalar(Mat4* self, float k);
+
+	void				mat4_build_rotation_x(Mat4* self, float radians);
+
+	void				mat4_build_rotation_y(Mat4* self, float radians);	
+
+	void				mat4_build_rotation_z(Mat4* self, float radians);
+
+	void				mat4_build_rotation(Mat4* self, const Vec3* n, float radians);
+
+	void				mat4_build_projection_perspective_rh(Mat4* self, float fovy, float aspect, float near, float far);
+
+	void				mat4_build_projection_perspective_lh(Mat4* self, float fovy, float aspect, float near, float far);
+
+	void				mat4_build_projection_ortho_rh(Mat4* self, float width, float height, float near, float far);
+
+	void				mat4_build_projection_ortho_lh(Mat4* self, float width, float height, float near, float far);
+
+	void				mat4_build_projection_ortho_2d_rh(Mat4* self, float width, float height, float near, float far);
+
+	void				mat4_build_look_at_rh(Mat4* self, const Vec3* pos, const Vec3* target, const Vec3* up);
+
+	void				mat4_build_look_at_lh(Mat4* self, const Vec3* pos, const Vec3* target, const Vec3* up);
+
+	void				mat4_build_viewpoint_billboard(Mat4* self, const Vec3* pos, const Vec3* target, const Vec3* up);
+
+	void				mat4_build_axis_billboard(Mat4* self, const Vec3* pos, const Vec3* target, const Vec3* axis);
+
+	Mat4*				mat4_transpose(Mat4* self);
+
+	float				mat4_determinant(Mat4* self);
+
+	Mat4*				mat4_invert(Mat4* self);
+
+	void				mat4_load_identity(Mat4* self);
+
+	Vec3*				mat4_get_translation(Mat4* self);
+
+	void				mat4_set_translation(Mat4* self, const Vec3* trans);
+
+	Vec3*				mat4_get_scale(Mat4* self);
+
+	void				mat4_set_scale(Mat4* self, const Vec3* scale);
+
+	void 				mat4_print(Mat4* self);
+
+]]