mirror of
https://github.com/FWGS/xash3d-fwgs
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5e0a0765ce
The `.editorconfig` file in this repo is configured to trim all trailing
whitespace regardless of whether the line is modified.
Trims all trailing whitespace in the repository to make the codebase easier
to work with in editors that respect `.editorconfig`.
`git blame` becomes less useful on these lines but it already isn't very useful.
Commands:
```
find . -type f -name '*.h' -exec sed --in-place 's/[[:space:]]\+$//' {} \+
find . -type f -name '*.c' -exec sed --in-place 's/[[:space:]]\+$//' {} \+
```
875 lines
17 KiB
C
875 lines
17 KiB
C
/*
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xash3d_mathlib.c - internal mathlib
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Copyright (C) 2010 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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#include "port.h"
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#include "xash3d_types.h"
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#include "const.h"
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#include "com_model.h"
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#include "xash3d_mathlib.h"
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#include "eiface.h"
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#define NUM_HULL_ROUNDS ARRAYSIZE( hull_table )
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#define HULL_PRECISION 4
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vec3_t vec3_origin = { 0, 0, 0 };
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static word hull_table[] = { 2, 4, 6, 8, 12, 16, 18, 24, 28, 32, 36, 40, 48, 54, 56, 60, 64, 72, 80, 112, 120, 128, 140, 176 };
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int boxpnt[6][4] =
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{
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{ 0, 4, 6, 2 }, // +X
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{ 0, 1, 5, 4 }, // +Y
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{ 0, 2, 3, 1 }, // +Z
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{ 7, 5, 1, 3 }, // -X
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{ 7, 3, 2, 6 }, // -Y
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{ 7, 6, 4, 5 }, // -Z
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};
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// pre-quantized table normals from Quake1
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const float m_bytenormals[NUMVERTEXNORMALS][3] =
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{
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#include "anorms.h"
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};
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/*
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=================
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anglemod
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=================
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*/
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float anglemod( float a )
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{
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a = (360.0f / 65536) * ((int)(a*(65536/360.0f)) & 65535);
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return a;
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}
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/*
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=================
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SimpleSpline
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NOTE: ripped from hl2 source
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hermite basis function for smooth interpolation
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Similar to Gain() above, but very cheap to call
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value should be between 0 & 1 inclusive
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=================
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*/
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float SimpleSpline( float value )
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{
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float valueSquared = value * value;
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// nice little ease-in, ease-out spline-like curve
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return (3.0f * valueSquared - 2.0f * valueSquared * value);
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}
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word FloatToHalf( float v )
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{
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unsigned int i = *((unsigned int *)&v);
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unsigned int e = (i >> 23) & 0x00ff;
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unsigned int m = i & 0x007fffff;
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unsigned short h;
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if( e <= 127 - 15 )
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h = ((m | 0x00800000) >> (127 - 14 - e)) >> 13;
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else h = (i >> 13) & 0x3fff;
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h |= (i >> 16) & 0xc000;
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return h;
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}
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float HalfToFloat( word h )
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{
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unsigned int f = (h << 16) & 0x80000000;
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unsigned int em = h & 0x7fff;
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if( em > 0x03ff )
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{
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f |= (em << 13) + ((127 - 15) << 23);
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}
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else
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{
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unsigned int m = em & 0x03ff;
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if( m != 0 )
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{
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unsigned int e = (em >> 10) & 0x1f;
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while(( m & 0x0400 ) == 0 )
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{
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m <<= 1;
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e--;
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}
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m &= 0x3ff;
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f |= ((e + (127 - 14)) << 23) | (m << 13);
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}
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}
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return *((float *)&f);
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}
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/*
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=================
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RoundUpHullSize
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round the hullsize to nearest 'right' value
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=================
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*/
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void RoundUpHullSize( vec3_t size )
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{
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int i, j;
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for( i = 0; i < 3; i++)
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{
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qboolean negative = false;
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float result, value;
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value = size[i];
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if( value < 0.0f ) negative = true;
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value = Q_ceil( fabs( value ));
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result = Q_ceil( size[i] );
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// lookup hull table to find nearest supposed value
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for( j = 0; j < NUM_HULL_ROUNDS; j++ )
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{
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if( value > hull_table[j] )
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continue; // ceil only
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if( negative )
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{
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result = ( value - hull_table[j] );
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if( result <= HULL_PRECISION )
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{
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result = -hull_table[j];
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break;
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}
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}
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else
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{
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result = ( value - hull_table[j] );
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if( result <= HULL_PRECISION )
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{
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result = hull_table[j];
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break;
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}
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}
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}
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size[i] = result;
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}
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}
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/*
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=================
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SignbitsForPlane
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fast box on planeside test
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=================
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*/
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int SignbitsForPlane( const vec3_t normal )
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{
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int bits, i;
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for( bits = i = 0; i < 3; i++ )
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if( normal[i] < 0.0f ) bits |= 1<<i;
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return bits;
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}
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/*
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=================
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PlaneTypeForNormal
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=================
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*/
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int PlaneTypeForNormal( const vec3_t normal )
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{
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if( normal[0] == 1.0f )
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return PLANE_X;
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if( normal[1] == 1.0f )
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return PLANE_Y;
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if( normal[2] == 1.0f )
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return PLANE_Z;
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return PLANE_NONAXIAL;
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}
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/*
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=================
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PlanesGetIntersectionPoint
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=================
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*/
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qboolean PlanesGetIntersectionPoint( const mplane_t *plane1, const mplane_t *plane2, const mplane_t *plane3, vec3_t out )
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{
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vec3_t n1, n2, n3;
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vec3_t n1n2, n2n3, n3n1;
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float denom;
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VectorNormalize2( plane1->normal, n1 );
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VectorNormalize2( plane2->normal, n2 );
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VectorNormalize2( plane3->normal, n3 );
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CrossProduct( n1, n2, n1n2 );
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CrossProduct( n2, n3, n2n3 );
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CrossProduct( n3, n1, n3n1 );
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denom = DotProduct( n1, n2n3 );
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VectorClear( out );
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// check if the denominator is zero (which would mean that no intersection is to be found
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if( denom == 0.0f )
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{
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// no intersection could be found, return <0,0,0>
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return false;
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}
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// compute intersection point
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#if 0
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VectorMAMAM( plane1->dist, n2n3, plane2->dist, n3n1, plane3->dist, n1n2, out );
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#else
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VectorMA( out, plane1->dist, n2n3, out );
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VectorMA( out, plane2->dist, n3n1, out );
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VectorMA( out, plane3->dist, n1n2, out );
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#endif
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VectorScale( out, ( 1.0f / denom ), out );
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return true;
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}
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/*
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=================
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NearestPOW
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=================
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*/
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int NearestPOW( int value, qboolean roundDown )
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{
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int n = 1;
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if( value <= 0 ) return 1;
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while( n < value ) n <<= 1;
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if( roundDown )
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{
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if( n > value ) n >>= 1;
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}
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return n;
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}
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// remap a value in the range [A,B] to [C,D].
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float RemapVal( float val, float A, float B, float C, float D )
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{
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return C + (D - C) * (val - A) / (B - A);
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}
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float ApproachVal( float target, float value, float speed )
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{
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float delta = target - value;
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if( delta > speed )
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value += speed;
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else if( delta < -speed )
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value -= speed;
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else value = target;
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return value;
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}
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/*
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=================
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rsqrt
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=================
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*/
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float rsqrt( float number )
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{
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int i;
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float x, y;
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if( number == 0.0f )
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return 0.0f;
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x = number * 0.5f;
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i = *(int *)&number; // evil floating point bit level hacking
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i = 0x5f3759df - (i >> 1); // what the fuck?
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y = *(float *)&i;
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y = y * (1.5f - (x * y * y)); // first iteration
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return y;
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}
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/*
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=================
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SinCos
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=================
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*/
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void SinCos( float radians, float *sine, float *cosine )
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{
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#if _MSC_VER == 1200
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_asm
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{
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fld dword ptr [radians]
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fsincos
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mov edx, dword ptr [cosine]
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mov eax, dword ptr [sine]
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fstp dword ptr [edx]
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fstp dword ptr [eax]
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}
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#else
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*sine = sin(radians);
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*cosine = cos(radians);
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#endif
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}
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/*
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==============
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VectorCompareEpsilon
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==============
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*/
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qboolean VectorCompareEpsilon( const vec3_t vec1, const vec3_t vec2, vec_t epsilon )
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{
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vec_t ax, ay, az;
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ax = fabs( vec1[0] - vec2[0] );
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ay = fabs( vec1[1] - vec2[1] );
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az = fabs( vec1[2] - vec2[2] );
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if(( ax <= epsilon ) && ( ay <= epsilon ) && ( az <= epsilon ))
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return true;
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return false;
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}
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float VectorNormalizeLength2( const vec3_t v, vec3_t out )
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{
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float length, ilength;
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length = v[0] * v[0] + v[1] * v[1] + v[2] * v[2];
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length = sqrt( length );
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if( length )
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{
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ilength = 1.0f / length;
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out[0] = v[0] * ilength;
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out[1] = v[1] * ilength;
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out[2] = v[2] * ilength;
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}
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return length;
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}
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void VectorVectors( const vec3_t forward, vec3_t right, vec3_t up )
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{
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float d;
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right[0] = forward[2];
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right[1] = -forward[0];
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right[2] = forward[1];
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d = DotProduct( forward, right );
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VectorMA( right, -d, forward, right );
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VectorNormalize( right );
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CrossProduct( right, forward, up );
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VectorNormalize( up );
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}
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/*
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=================
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AngleVectors
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=================
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*/
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void GAME_EXPORT AngleVectors( const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up )
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{
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float sr, sp, sy, cr, cp, cy;
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SinCos( DEG2RAD( angles[YAW] ), &sy, &cy );
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SinCos( DEG2RAD( angles[PITCH] ), &sp, &cp );
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SinCos( DEG2RAD( angles[ROLL] ), &sr, &cr );
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if( forward )
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{
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forward[0] = cp * cy;
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forward[1] = cp * sy;
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forward[2] = -sp;
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}
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if( right )
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{
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right[0] = (-1.0f * sr * sp * cy + -1.0f * cr * -sy );
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right[1] = (-1.0f * sr * sp * sy + -1.0f * cr * cy );
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right[2] = (-1.0f * sr * cp);
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}
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if( up )
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{
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up[0] = (cr * sp * cy + -sr * -sy );
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up[1] = (cr * sp * sy + -sr * cy );
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up[2] = (cr * cp);
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}
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}
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/*
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=================
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VectorAngles
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=================
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*/
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void GAME_EXPORT VectorAngles( const float *forward, float *angles )
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{
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float tmp, yaw, pitch;
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if( !forward || !angles )
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{
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if( angles ) VectorClear( angles );
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return;
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}
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if( forward[1] == 0 && forward[0] == 0 )
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{
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// fast case
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yaw = 0;
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if( forward[2] > 0 )
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pitch = 90.0f;
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else pitch = 270.0f;
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}
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else
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{
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yaw = ( atan2( forward[1], forward[0] ) * 180 / M_PI_F );
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if( yaw < 0 ) yaw += 360;
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tmp = sqrt( forward[0] * forward[0] + forward[1] * forward[1] );
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pitch = ( atan2( forward[2], tmp ) * 180 / M_PI_F );
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if( pitch < 0 ) pitch += 360;
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}
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VectorSet( angles, pitch, yaw, 0 );
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}
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/*
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=================
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VectorsAngles
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=================
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*/
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void VectorsAngles( const vec3_t forward, const vec3_t right, const vec3_t up, vec3_t angles )
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{
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float pitch, cpitch, yaw, roll;
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pitch = -asin( forward[2] );
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cpitch = cos( pitch );
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if( fabs( cpitch ) > EQUAL_EPSILON ) // gimball lock?
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{
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cpitch = 1.0f / cpitch;
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pitch = RAD2DEG( pitch );
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yaw = RAD2DEG( atan2( forward[1] * cpitch, forward[0] * cpitch ));
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roll = RAD2DEG( atan2( -right[2] * cpitch, up[2] * cpitch ));
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}
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else
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{
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pitch = forward[2] > 0 ? -90.0f : 90.0f;
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yaw = RAD2DEG( atan2( right[0], -right[1] ));
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roll = 180.0f;
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}
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angles[PITCH] = pitch;
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angles[YAW] = yaw;
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angles[ROLL] = roll;
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}
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//
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// bounds operations
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//
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/*
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=================
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ClearBounds
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=================
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*/
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void ClearBounds( vec3_t mins, vec3_t maxs )
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{
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// make bogus range
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mins[0] = mins[1] = mins[2] = 999999.0f;
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maxs[0] = maxs[1] = maxs[2] = -999999.0f;
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}
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/*
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=================
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AddPointToBounds
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=================
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*/
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void AddPointToBounds( const vec3_t v, vec3_t mins, vec3_t maxs )
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{
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float val;
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int i;
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for( i = 0; i < 3; i++ )
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{
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val = v[i];
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if( val < mins[i] ) mins[i] = val;
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if( val > maxs[i] ) maxs[i] = val;
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}
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}
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/*
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=================
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ExpandBounds
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=================
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*/
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void ExpandBounds( vec3_t mins, vec3_t maxs, float offset )
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{
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mins[0] -= offset;
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mins[1] -= offset;
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mins[2] -= offset;
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maxs[0] += offset;
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maxs[1] += offset;
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maxs[2] += offset;
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}
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/*
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=================
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BoundsIntersect
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=================
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*/
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qboolean BoundsIntersect( const vec3_t mins1, const vec3_t maxs1, const vec3_t mins2, const vec3_t maxs2 )
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{
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if( mins1[0] > maxs2[0] || mins1[1] > maxs2[1] || mins1[2] > maxs2[2] )
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return false;
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if( maxs1[0] < mins2[0] || maxs1[1] < mins2[1] || maxs1[2] < mins2[2] )
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return false;
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return true;
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}
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/*
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=================
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BoundsAndSphereIntersect
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=================
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*/
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qboolean BoundsAndSphereIntersect( const vec3_t mins, const vec3_t maxs, const vec3_t origin, float radius )
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{
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if( mins[0] > origin[0] + radius || mins[1] > origin[1] + radius || mins[2] > origin[2] + radius )
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return false;
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if( maxs[0] < origin[0] - radius || maxs[1] < origin[1] - radius || maxs[2] < origin[2] - radius )
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return false;
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return true;
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}
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/*
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=================
|
|
SphereIntersect
|
|
=================
|
|
*/
|
|
qboolean SphereIntersect( const vec3_t vSphereCenter, float fSphereRadiusSquared, const vec3_t vLinePt, const vec3_t vLineDir )
|
|
{
|
|
float a, b, c, insideSqr;
|
|
vec3_t p;
|
|
|
|
// translate sphere to origin.
|
|
VectorSubtract( vLinePt, vSphereCenter, p );
|
|
|
|
a = DotProduct( vLineDir, vLineDir );
|
|
b = 2.0f * DotProduct( p, vLineDir );
|
|
c = DotProduct( p, p ) - fSphereRadiusSquared;
|
|
|
|
insideSqr = b * b - 4.0f * a * c;
|
|
if( insideSqr <= 0.000001f )
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
PlaneIntersect
|
|
|
|
find point where ray
|
|
was intersect with plane
|
|
=================
|
|
*/
|
|
void PlaneIntersect( const mplane_t *plane, const vec3_t p0, const vec3_t p1, vec3_t out )
|
|
{
|
|
float distToPlane = PlaneDiff( p0, plane );
|
|
float planeDotRay = DotProduct( plane->normal, p1 );
|
|
float sect = -(distToPlane) / planeDotRay;
|
|
|
|
VectorMA( p0, sect, p1, out );
|
|
}
|
|
|
|
/*
|
|
=================
|
|
RadiusFromBounds
|
|
=================
|
|
*/
|
|
float RadiusFromBounds( const vec3_t mins, const vec3_t maxs )
|
|
{
|
|
vec3_t corner;
|
|
int i;
|
|
|
|
for( i = 0; i < 3; i++ )
|
|
{
|
|
corner[i] = fabs( mins[i] ) > fabs( maxs[i] ) ? fabs( mins[i] ) : fabs( maxs[i] );
|
|
}
|
|
return VectorLength( corner );
|
|
}
|
|
|
|
//
|
|
// studio utils
|
|
//
|
|
/*
|
|
====================
|
|
AngleQuaternion
|
|
|
|
====================
|
|
*/
|
|
void AngleQuaternion( const vec3_t angles, vec4_t q, qboolean studio )
|
|
{
|
|
float sr, sp, sy, cr, cp, cy;
|
|
|
|
if( studio )
|
|
{
|
|
SinCos( angles[ROLL] * 0.5f, &sy, &cy );
|
|
SinCos( angles[YAW] * 0.5f, &sp, &cp );
|
|
SinCos( angles[PITCH] * 0.5f, &sr, &cr );
|
|
}
|
|
else
|
|
{
|
|
SinCos( DEG2RAD( angles[YAW] ) * 0.5f, &sy, &cy );
|
|
SinCos( DEG2RAD( angles[PITCH] ) * 0.5f, &sp, &cp );
|
|
SinCos( DEG2RAD( angles[ROLL] ) * 0.5f, &sr, &cr );
|
|
}
|
|
|
|
q[0] = sr * cp * cy - cr * sp * sy; // X
|
|
q[1] = cr * sp * cy + sr * cp * sy; // Y
|
|
q[2] = cr * cp * sy - sr * sp * cy; // Z
|
|
q[3] = cr * cp * cy + sr * sp * sy; // W
|
|
}
|
|
|
|
/*
|
|
====================
|
|
QuaternionAngle
|
|
|
|
====================
|
|
*/
|
|
void QuaternionAngle( const vec4_t q, vec3_t angles )
|
|
{
|
|
matrix3x4 mat;
|
|
Matrix3x4_FromOriginQuat( mat, q, vec3_origin );
|
|
Matrix3x4_AnglesFromMatrix( mat, angles );
|
|
}
|
|
|
|
/*
|
|
====================
|
|
QuaternionAlign
|
|
|
|
make sure quaternions are within 180 degrees of one another,
|
|
if not, reverse q
|
|
====================
|
|
*/
|
|
void QuaternionAlign( const vec4_t p, const vec4_t q, vec4_t qt )
|
|
{
|
|
// decide if one of the quaternions is backwards
|
|
float a = 0.0f;
|
|
float b = 0.0f;
|
|
int i;
|
|
|
|
for( i = 0; i < 4; i++ )
|
|
{
|
|
a += (p[i] - q[i]) * (p[i] - q[i]);
|
|
b += (p[i] + q[i]) * (p[i] + q[i]);
|
|
}
|
|
|
|
if( a > b )
|
|
{
|
|
for( i = 0; i < 4; i++ )
|
|
qt[i] = -q[i];
|
|
}
|
|
else
|
|
{
|
|
for( i = 0; i < 4; i++ )
|
|
qt[i] = q[i];
|
|
}
|
|
}
|
|
|
|
/*
|
|
====================
|
|
QuaternionSlerpNoAlign
|
|
====================
|
|
*/
|
|
void QuaternionSlerpNoAlign( const vec4_t p, const vec4_t q, float t, vec4_t qt )
|
|
{
|
|
float omega, cosom, sinom, sclp, sclq;
|
|
int i;
|
|
|
|
// 0.0 returns p, 1.0 return q.
|
|
cosom = p[0] * q[0] + p[1] * q[1] + p[2] * q[2] + p[3] * q[3];
|
|
|
|
if(( 1.0f + cosom ) > 0.000001f )
|
|
{
|
|
if(( 1.0f - cosom ) > 0.000001f )
|
|
{
|
|
omega = acos( cosom );
|
|
sinom = sin( omega );
|
|
sclp = sin( (1.0f - t) * omega) / sinom;
|
|
sclq = sin( t * omega ) / sinom;
|
|
}
|
|
else
|
|
{
|
|
sclp = 1.0f - t;
|
|
sclq = t;
|
|
}
|
|
|
|
for( i = 0; i < 4; i++ )
|
|
{
|
|
qt[i] = sclp * p[i] + sclq * q[i];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
qt[0] = -q[1];
|
|
qt[1] = q[0];
|
|
qt[2] = -q[3];
|
|
qt[3] = q[2];
|
|
sclp = sin(( 1.0f - t ) * ( 0.5f * M_PI_F ));
|
|
sclq = sin( t * ( 0.5f * M_PI_F ));
|
|
|
|
for( i = 0; i < 3; i++ )
|
|
{
|
|
qt[i] = sclp * p[i] + sclq * qt[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
====================
|
|
QuaternionSlerp
|
|
|
|
Quaternion sphereical linear interpolation
|
|
====================
|
|
*/
|
|
void QuaternionSlerp( const vec4_t p, const vec4_t q, float t, vec4_t qt )
|
|
{
|
|
vec4_t q2;
|
|
|
|
// 0.0 returns p, 1.0 return q.
|
|
// decide if one of the quaternions is backwards
|
|
QuaternionAlign( p, q, q2 );
|
|
|
|
QuaternionSlerpNoAlign( p, q2, t, qt );
|
|
}
|
|
|
|
/*
|
|
====================
|
|
V_CalcFov
|
|
====================
|
|
*/
|
|
float V_CalcFov( float *fov_x, float width, float height )
|
|
{
|
|
float x, half_fov_y;
|
|
|
|
if( *fov_x < 1.0f || *fov_x > 179.0f )
|
|
*fov_x = 90.0f; // default value
|
|
|
|
x = width / tan( DEG2RAD( *fov_x ) * 0.5f );
|
|
half_fov_y = atan( height / x );
|
|
|
|
return RAD2DEG( half_fov_y ) * 2;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
V_AdjustFov
|
|
====================
|
|
*/
|
|
void V_AdjustFov( float *fov_x, float *fov_y, float width, float height, qboolean lock_x )
|
|
{
|
|
float x, y;
|
|
|
|
if( width * 3 == 4 * height || width * 4 == height * 5 )
|
|
{
|
|
// 4:3 or 5:4 ratio
|
|
return;
|
|
}
|
|
|
|
if( lock_x )
|
|
{
|
|
*fov_y = 2 * atan((width * 3) / (height * 4) * tan( *fov_y * M_PI_F / 360.0f * 0.5f )) * 360 / M_PI_F;
|
|
return;
|
|
}
|
|
|
|
y = V_CalcFov( fov_x, 640, 480 );
|
|
x = *fov_x;
|
|
|
|
*fov_x = V_CalcFov( &y, height, width );
|
|
if( *fov_x < x ) *fov_x = x;
|
|
else *fov_y = y;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
BoxOnPlaneSide
|
|
|
|
Returns 1, 2, or 1 + 2
|
|
==================
|
|
*/
|
|
int BoxOnPlaneSide( const vec3_t emins, const vec3_t emaxs, const mplane_t *p )
|
|
{
|
|
float dist1, dist2;
|
|
int sides = 0;
|
|
|
|
// general case
|
|
switch( p->signbits )
|
|
{
|
|
case 0:
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
break;
|
|
case 1:
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
break;
|
|
case 2:
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
break;
|
|
case 3:
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
break;
|
|
case 4:
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
break;
|
|
case 5:
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
break;
|
|
case 6:
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
break;
|
|
case 7:
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
break;
|
|
default:
|
|
// shut up compiler
|
|
dist1 = dist2 = 0;
|
|
break;
|
|
}
|
|
|
|
if( dist1 >= p->dist )
|
|
sides = 1;
|
|
if( dist2 < p->dist )
|
|
sides |= 2;
|
|
|
|
return sides;
|
|
}
|
|
|