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/*
* Copyright (c), Recep Aslantas.
*
* MIT License (MIT), http://opensource.org/licenses/MIT
* Full license can be found in the LICENSE file
*/
#ifndef cglm_plane_h
#define cglm_plane_h
#include "common.h"
#include "vec3.h"
#include "vec4.h"
/*
Plane equation: Ax + By + Cz + D = 0;
It stored in vec4 as [A, B, C, D]. (A, B, C) is normal and D is distance
*/
/*
Functions:
CGLM_INLINE void glm_plane_normalize(vec4 plane);
*/
/*!
* @brief normalizes a plane
*
* @param[in, out] plane plane to normalize
*/
CGLM_INLINE
void
glm_plane_normalize(vec4 plane) {
float norm;
if (CGLM_UNLIKELY((norm = glm_vec3_norm(plane)) < FLT_EPSILON)) {
glm_vec4_zero(plane);
return;
}
glm_vec4_scale(plane, 1.0f / norm, plane);
}
#endif /* cglm_plane_h */
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