44 lines
747 B
C
44 lines
747 B
C
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/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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#ifndef cglm_plane_h
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#define cglm_plane_h
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#include "common.h"
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#include "vec4.h"
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/*
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Plane equation: Ax + By + Cz + D = 0;
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It stored in vec4 as [A, B, C, D]. (A, B, C) is normal and D is distance
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*/
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/*
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Functions:
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CGLM_INLINE void glm_plane_normalize(vec4 plane);
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*/
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/*!
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* @brief normalizes a plane
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*
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* @param[in, out] plane plane to normalize
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*/
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CGLM_INLINE
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void
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glm_plane_normalize(vec4 plane) {
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float norm;
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if ((norm = glm_vec3_norm(plane)) == 0.0f) {
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glm_vec4_zero(plane);
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return;
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}
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glm_vec4_scale(plane, 1.0f / norm, plane);
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}
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#endif /* cglm_plane_h */
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