52 lines
2.0 KiB
52 lines
2.0 KiB
/* |
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gl_frustum.cpp - frustum test implementation |
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Copyright (C) 2016 Uncle Mike |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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*/ |
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#ifndef GL_FRUSTUM_H |
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#define GL_FRUSTUM_H |
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// don't change this order |
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#define FRUSTUM_LEFT 0 |
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#define FRUSTUM_RIGHT 1 |
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#define FRUSTUM_BOTTOM 2 |
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#define FRUSTUM_TOP 3 |
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#define FRUSTUM_FAR 4 |
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#define FRUSTUM_NEAR 5 |
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#define FRUSTUM_PLANES 6 |
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typedef struct gl_frustum_s |
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{ |
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mplane_t planes[FRUSTUM_PLANES]; |
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unsigned int clipFlags; |
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} gl_frustum_t; |
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void GL_FrustumInitProj( gl_frustum_t *out, float flZNear, float flZFar, float flFovX, float flFovY ); |
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void GL_FrustumInitOrtho( gl_frustum_t *out, float xLeft, float xRight, float yTop, float yBottom, float flZNear, float flZFar ); |
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void GL_FrustumInitBox( gl_frustum_t *out, const vec3_t org, float radius ); // used for pointlights |
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void GL_FrustumInitProjFromMatrix( gl_frustum_t *out, const matrix4x4 projection ); |
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void GL_FrustumSetPlane( gl_frustum_t *out, int side, const vec3_t vecNormal, float flDist ); |
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void GL_FrustumNormalizePlane( gl_frustum_t *out, int side ); |
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void GL_FrustumComputeBounds( gl_frustum_t *out, vec3_t mins, vec3_t maxs ); |
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void GL_FrustumComputeCorners( gl_frustum_t *out, vec3_t bbox[8] ); |
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void GL_FrustumDrawDebug( gl_frustum_t *out ); |
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// cull methods |
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qboolean GL_FrustumCullBox( gl_frustum_t *out, const vec3_t mins, const vec3_t maxs, int userClipFlags ); |
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qboolean GL_FrustumCullSphere( gl_frustum_t *out, const vec3_t centre, float radius, int userClipFlags ); |
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// plane manipulating |
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void GL_FrustumEnablePlane( gl_frustum_t *out, int side ); |
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void GL_FrustumDisablePlane( gl_frustum_t *out, int side ); |
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#endif//GL_FRUSTUM_H
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