73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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Copyright (C) 2002-2007 Victor Luchits
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __R_MATH_H__
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#define __R_MATH_H__
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// r_math.h
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float CalcFov( float fov_x, float width, float height );
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int BoxOnPlaneSide( const vec3_t emins, const vec3_t emaxs, const mplane_t *p );
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void AdjustFov( float *fov_x, float *fov_y, float width, float height, qboolean lock_x );
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void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
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void PlaneFromPoints( vec3_t verts[3], mplane_t *plane );
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void CategorizePlane( mplane_t *plane );
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#define BOX_ON_PLANE_SIDE( emins, emaxs, p ) \
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((( p )->type < 3 ) ? \
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( \
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((p)->dist <= (emins)[(p)->type]) ? \
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1 \
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: \
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( \
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((p)->dist >= (emaxs)[(p)->type]) ? \
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2 \
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: \
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3 \
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) \
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) \
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: \
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BoxOnPlaneSide(( emins ), ( emaxs ), ( p )))
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/*
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===============
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ColorNormalize
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===============
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*/
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_inline float ColorNormalize( const float *in, vec3_t out )
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{
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float f = max( max( in[0], in[1] ), in[2] );
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if( f > 1.0f )
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{
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f = 1.0f / f;
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out[0] = in[0] * f;
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out[1] = in[1] * f;
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out[2] = in[2] * f;
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}
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else
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{
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out[0] = in[0];
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out[1] = in[1];
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out[2] = in[2];
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}
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return f;
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}
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#endif /*__R_MATH_H__*/
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