im making a right mess of this

1 files changed, 0 insertions, 1355 deletions

diff --git a/src/game/q_math.c b/src/game/q_math.c
deleted file mode 100644
index 324418e5..00000000
--- a/src/game/q_math.c
+++ /dev/null
@@ -1,1355 +0,0 @@
-// Copyright (C) 1999-2000 Id Software, Inc.
-//
-// q_math.c -- stateless support routines that are included in each code module
-
-/*
- *  Portions Copyright (C) 2000-2001 Tim Angus
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2, or (at your option)
- *  any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-/*  To assertain which portions are licensed under the GPL and which are
- *  licensed by Id Software, Inc. please run a diff between the equivalent
- *  versions of the "Tremulous" modification and the unmodified "Quake3"
- *  game source code.
- */
-                    
-#include "q_shared.h"
-
-
-vec3_t  vec3_origin = {0,0,0};
-vec3_t  axisDefault[3] = { { 1, 0, 0 }, { 0, 1, 0 }, { 0, 0, 1 } };
-
-
-vec4_t    colorBlack  = {0, 0, 0, 1};
-vec4_t    colorRed  = {1, 0, 0, 1};
-vec4_t    colorGreen  = {0, 1, 0, 1};
-vec4_t    colorBlue = {0, 0, 1, 1};
-vec4_t    colorYellow = {1, 1, 0, 1};
-vec4_t    colorMagenta= {1, 0, 1, 1};
-vec4_t    colorCyan = {0, 1, 1, 1};
-vec4_t    colorWhite  = {1, 1, 1, 1};
-vec4_t    colorLtGrey = {0.75, 0.75, 0.75, 1};
-vec4_t    colorMdGrey = {0.5, 0.5, 0.5, 1};
-vec4_t    colorDkGrey = {0.25, 0.25, 0.25, 1};
-
-vec4_t  g_color_table[8] =
-  {
-  {0.0, 0.0, 0.0, 1.0},
-  {1.0, 0.0, 0.0, 1.0},
-  {0.0, 1.0, 0.0, 1.0},
-  {1.0, 1.0, 0.0, 1.0},
-  {0.0, 0.0, 1.0, 1.0},
-  {0.0, 1.0, 1.0, 1.0},
-  {1.0, 0.0, 1.0, 1.0},
-  {1.0, 1.0, 1.0, 1.0},
-  };
-
-
-vec3_t  bytedirs[NUMVERTEXNORMALS] =
-{
-{-0.525731f, 0.000000f, 0.850651f}, {-0.442863f, 0.238856f, 0.864188f}, 
-{-0.295242f, 0.000000f, 0.955423f}, {-0.309017f, 0.500000f, 0.809017f}, 
-{-0.162460f, 0.262866f, 0.951056f}, {0.000000f, 0.000000f, 1.000000f}, 
-{0.000000f, 0.850651f, 0.525731f}, {-0.147621f, 0.716567f, 0.681718f}, 
-{0.147621f, 0.716567f, 0.681718f}, {0.000000f, 0.525731f, 0.850651f}, 
-{0.309017f, 0.500000f, 0.809017f}, {0.525731f, 0.000000f, 0.850651f}, 
-{0.295242f, 0.000000f, 0.955423f}, {0.442863f, 0.238856f, 0.864188f}, 
-{0.162460f, 0.262866f, 0.951056f}, {-0.681718f, 0.147621f, 0.716567f}, 
-{-0.809017f, 0.309017f, 0.500000f},{-0.587785f, 0.425325f, 0.688191f}, 
-{-0.850651f, 0.525731f, 0.000000f},{-0.864188f, 0.442863f, 0.238856f}, 
-{-0.716567f, 0.681718f, 0.147621f},{-0.688191f, 0.587785f, 0.425325f}, 
-{-0.500000f, 0.809017f, 0.309017f}, {-0.238856f, 0.864188f, 0.442863f}, 
-{-0.425325f, 0.688191f, 0.587785f}, {-0.716567f, 0.681718f, -0.147621f}, 
-{-0.500000f, 0.809017f, -0.309017f}, {-0.525731f, 0.850651f, 0.000000f}, 
-{0.000000f, 0.850651f, -0.525731f}, {-0.238856f, 0.864188f, -0.442863f}, 
-{0.000000f, 0.955423f, -0.295242f}, {-0.262866f, 0.951056f, -0.162460f}, 
-{0.000000f, 1.000000f, 0.000000f}, {0.000000f, 0.955423f, 0.295242f}, 
-{-0.262866f, 0.951056f, 0.162460f}, {0.238856f, 0.864188f, 0.442863f}, 
-{0.262866f, 0.951056f, 0.162460f}, {0.500000f, 0.809017f, 0.309017f}, 
-{0.238856f, 0.864188f, -0.442863f},{0.262866f, 0.951056f, -0.162460f}, 
-{0.500000f, 0.809017f, -0.309017f},{0.850651f, 0.525731f, 0.000000f}, 
-{0.716567f, 0.681718f, 0.147621f}, {0.716567f, 0.681718f, -0.147621f}, 
-{0.525731f, 0.850651f, 0.000000f}, {0.425325f, 0.688191f, 0.587785f}, 
-{0.864188f, 0.442863f, 0.238856f}, {0.688191f, 0.587785f, 0.425325f}, 
-{0.809017f, 0.309017f, 0.500000f}, {0.681718f, 0.147621f, 0.716567f}, 
-{0.587785f, 0.425325f, 0.688191f}, {0.955423f, 0.295242f, 0.000000f}, 
-{1.000000f, 0.000000f, 0.000000f}, {0.951056f, 0.162460f, 0.262866f}, 
-{0.850651f, -0.525731f, 0.000000f},{0.955423f, -0.295242f, 0.000000f}, 
-{0.864188f, -0.442863f, 0.238856f}, {0.951056f, -0.162460f, 0.262866f}, 
-{0.809017f, -0.309017f, 0.500000f}, {0.681718f, -0.147621f, 0.716567f}, 
-{0.850651f, 0.000000f, 0.525731f}, {0.864188f, 0.442863f, -0.238856f}, 
-{0.809017f, 0.309017f, -0.500000f}, {0.951056f, 0.162460f, -0.262866f}, 
-{0.525731f, 0.000000f, -0.850651f}, {0.681718f, 0.147621f, -0.716567f},
-{0.681718f, -0.147621f, -0.716567f},{0.850651f, 0.000000f, -0.525731f}, 
-{0.809017f, -0.309017f, -0.500000f}, {0.864188f, -0.442863f, -0.238856f}, 
-{0.951056f, -0.162460f, -0.262866f}, {0.147621f, 0.716567f, -0.681718f}, 
-{0.309017f, 0.500000f, -0.809017f}, {0.425325f, 0.688191f, -0.587785f}, 
-{0.442863f, 0.238856f, -0.864188f}, {0.587785f, 0.425325f, -0.688191f}, 
-{0.688191f, 0.587785f, -0.425325f}, {-0.147621f, 0.716567f, -0.681718f}, 
-{-0.309017f, 0.500000f, -0.809017f}, {0.000000f, 0.525731f, -0.850651f}, 
-{-0.525731f, 0.000000f, -0.850651f}, {-0.442863f, 0.238856f, -0.864188f}, 
-{-0.295242f, 0.000000f, -0.955423f}, {-0.162460f, 0.262866f, -0.951056f}, 
-{0.000000f, 0.000000f, -1.000000f}, {0.295242f, 0.000000f, -0.955423f}, 
-{0.162460f, 0.262866f, -0.951056f}, {-0.442863f, -0.238856f, -0.864188f}, 
-{-0.309017f, -0.500000f, -0.809017f}, {-0.162460f, -0.262866f, -0.951056f}, 
-{0.000000f, -0.850651f, -0.525731f}, {-0.147621f, -0.716567f, -0.681718f}, 
-{0.147621f, -0.716567f, -0.681718f}, {0.000000f, -0.525731f, -0.850651f}, 
-{0.309017f, -0.500000f, -0.809017f}, {0.442863f, -0.238856f, -0.864188f}, 
-{0.162460f, -0.262866f, -0.951056f}, {0.238856f, -0.864188f, -0.442863f}, 
-{0.500000f, -0.809017f, -0.309017f}, {0.425325f, -0.688191f, -0.587785f}, 
-{0.716567f, -0.681718f, -0.147621f}, {0.688191f, -0.587785f, -0.425325f}, 
-{0.587785f, -0.425325f, -0.688191f}, {0.000000f, -0.955423f, -0.295242f}, 
-{0.000000f, -1.000000f, 0.000000f}, {0.262866f, -0.951056f, -0.162460f}, 
-{0.000000f, -0.850651f, 0.525731f}, {0.000000f, -0.955423f, 0.295242f}, 
-{0.238856f, -0.864188f, 0.442863f}, {0.262866f, -0.951056f, 0.162460f}, 
-{0.500000f, -0.809017f, 0.309017f}, {0.716567f, -0.681718f, 0.147621f}, 
-{0.525731f, -0.850651f, 0.000000f}, {-0.238856f, -0.864188f, -0.442863f}, 
-{-0.500000f, -0.809017f, -0.309017f}, {-0.262866f, -0.951056f, -0.162460f}, 
-{-0.850651f, -0.525731f, 0.000000f}, {-0.716567f, -0.681718f, -0.147621f}, 
-{-0.716567f, -0.681718f, 0.147621f}, {-0.525731f, -0.850651f, 0.000000f}, 
-{-0.500000f, -0.809017f, 0.309017f}, {-0.238856f, -0.864188f, 0.442863f}, 
-{-0.262866f, -0.951056f, 0.162460f}, {-0.864188f, -0.442863f, 0.238856f}, 
-{-0.809017f, -0.309017f, 0.500000f}, {-0.688191f, -0.587785f, 0.425325f}, 
-{-0.681718f, -0.147621f, 0.716567f}, {-0.442863f, -0.238856f, 0.864188f}, 
-{-0.587785f, -0.425325f, 0.688191f}, {-0.309017f, -0.500000f, 0.809017f}, 
-{-0.147621f, -0.716567f, 0.681718f}, {-0.425325f, -0.688191f, 0.587785f}, 
-{-0.162460f, -0.262866f, 0.951056f}, {0.442863f, -0.238856f, 0.864188f}, 
-{0.162460f, -0.262866f, 0.951056f}, {0.309017f, -0.500000f, 0.809017f}, 
-{0.147621f, -0.716567f, 0.681718f}, {0.000000f, -0.525731f, 0.850651f}, 
-{0.425325f, -0.688191f, 0.587785f}, {0.587785f, -0.425325f, 0.688191f}, 
-{0.688191f, -0.587785f, 0.425325f}, {-0.955423f, 0.295242f, 0.000000f}, 
-{-0.951056f, 0.162460f, 0.262866f}, {-1.000000f, 0.000000f, 0.000000f}, 
-{-0.850651f, 0.000000f, 0.525731f}, {-0.955423f, -0.295242f, 0.000000f}, 
-{-0.951056f, -0.162460f, 0.262866f}, {-0.864188f, 0.442863f, -0.238856f}, 
-{-0.951056f, 0.162460f, -0.262866f}, {-0.809017f, 0.309017f, -0.500000f}, 
-{-0.864188f, -0.442863f, -0.238856f}, {-0.951056f, -0.162460f, -0.262866f}, 
-{-0.809017f, -0.309017f, -0.500000f}, {-0.681718f, 0.147621f, -0.716567f}, 
-{-0.681718f, -0.147621f, -0.716567f}, {-0.850651f, 0.000000f, -0.525731f}, 
-{-0.688191f, 0.587785f, -0.425325f}, {-0.587785f, 0.425325f, -0.688191f}, 
-{-0.425325f, 0.688191f, -0.587785f}, {-0.425325f, -0.688191f, -0.587785f}, 
-{-0.587785f, -0.425325f, -0.688191f}, {-0.688191f, -0.587785f, -0.425325f}
-};
-
-//==============================================================
-
-int   Q_rand( int *seed ) {
-  *seed = (69069 * *seed + 1);
-  return *seed;
-}
-
-float Q_random( int *seed ) {
-  return ( Q_rand( seed ) & 0xffff ) / (float)0x10000;
-}
-
-float Q_crandom( int *seed ) {
-  return 2.0 * ( Q_random( seed ) - 0.5 );
-}
-
-
-//=======================================================
-
-signed char ClampChar( int i ) {
-  if ( i < -128 ) {
-    return -128;
-  }
-  if ( i > 127 ) {
-    return 127;
-  }
-  return i;
-}
-
-signed short ClampShort( int i ) {
-  if ( i < -32768 ) {
-    return -32768;
-  }
-  if ( i > 0x7fff ) {
-    return 0x7fff;
-  }
-  return i;
-}
-
-
-// this isn't a real cheap function to call!
-int DirToByte( vec3_t dir ) {
-  int   i, best;
-  float d, bestd;
-
-  if ( !dir ) {
-    return 0;
-  }
-
-  bestd = 0;
-  best = 0;
-  for (i=0 ; i<NUMVERTEXNORMALS ; i++)
-  {
-    d = DotProduct (dir, bytedirs[i]);
-    if (d > bestd)
-    {
-      bestd = d;
-      best = i;
-    }
-  }
-
-  return best;
-}
-
-void ByteToDir( int b, vec3_t dir ) {
-  if ( b < 0 || b >= NUMVERTEXNORMALS ) {
-    VectorCopy( vec3_origin, dir );
-    return;
-  }
-  VectorCopy (bytedirs[b], dir);
-}
-
-
-unsigned ColorBytes3 (float r, float g, float b) {
-  unsigned  i;
-
-  ( (byte *)&i )[0] = r * 255;
-  ( (byte *)&i )[1] = g * 255;
-  ( (byte *)&i )[2] = b * 255;
-
-  return i;
-}
-
-unsigned ColorBytes4 (float r, float g, float b, float a) {
-  unsigned  i;
-
-  ( (byte *)&i )[0] = r * 255;
-  ( (byte *)&i )[1] = g * 255;
-  ( (byte *)&i )[2] = b * 255;
-  ( (byte *)&i )[3] = a * 255;
-
-  return i;
-}
-
-float NormalizeColor( const vec3_t in, vec3_t out ) {
-  float max;
-
-  max = in[0];
-  if ( in[1] > max ) {
-    max = in[1];
-  }
-  if ( in[2] > max ) {
-    max = in[2];
-  }
-
-  if ( !max ) {
-    VectorClear( out );
-  } else {
-    out[0] = in[0] / max;
-    out[1] = in[1] / max;
-    out[2] = in[2] / max;
-  }
-  return max;
-}
-
-
-/*
-=====================
-PlaneFromPoints
-
-Returns false if the triangle is degenrate.
-The normal will point out of the clock for clockwise ordered points
-=====================
-*/
-qboolean PlaneFromPoints( vec4_t plane, const vec3_t a, const vec3_t b, const vec3_t c ) {
-  vec3_t  d1, d2;
-
-  VectorSubtract( b, a, d1 );
-  VectorSubtract( c, a, d2 );
-  CrossProduct( d2, d1, plane );
-  if ( VectorNormalize( plane ) == 0 ) {
-    return qfalse;
-  }
-
-  plane[3] = DotProduct( a, plane );
-  return qtrue;
-}
-
-
-/// These optimised and much cleaner implementations of the Vector Rotation
-/// functions were provided by Riv of planetquake (riviera@planetquake.com)
-/// ...Cheers Riv...
-/*
-===============
-RotatePointAroundVector
-
-This is not implemented very well...
-===============
-*/
-void RotatePointAroundVector(vec3_t dst, const vec3_t dir, const vec3_t point, float degrees)
-{
-  float sin_a;
-  float cos_a;
-  float cos_ia;
-  float i_i_ia;
-  float j_j_ia;
-  float k_k_ia;
-  float i_j_ia;
-  float i_k_ia;
-  float j_k_ia;
-  float a_sin;
-  float b_sin;
-  float c_sin;
-  float rot[3][3];
-
-  cos_ia = DEG2RAD(degrees);
-  sin_a = sin(cos_ia);
-  cos_a = cos(cos_ia);
-  cos_ia = 1.0F - cos_a;
-
-  i_i_ia = dir[0] * dir[0] * cos_ia;
-  j_j_ia = dir[1] * dir[1] * cos_ia;
-  k_k_ia = dir[2] * dir[2] * cos_ia;
-  i_j_ia = dir[0] * dir[1] * cos_ia;
-  i_k_ia = dir[0] * dir[2] * cos_ia;
-  j_k_ia = dir[1] * dir[2] * cos_ia;
-
-  a_sin = dir[0] * sin_a;
-  b_sin = dir[1] * sin_a;
-  c_sin = dir[2] * sin_a;
-
-  rot[0][0] = i_i_ia + cos_a;
-  rot[0][1] = i_j_ia - c_sin;
-  rot[0][2] = i_k_ia + b_sin;
-  rot[1][0] = i_j_ia + c_sin;
-  rot[1][1] = j_j_ia + cos_a;
-  rot[1][2] = j_k_ia - a_sin;
-
-  rot[2][0] = i_k_ia - b_sin;
-  rot[2][1] = j_k_ia + a_sin;
-  rot[2][2] = k_k_ia + cos_a;
-
-  dst[0] = point[0] * rot[0][0] + point[1] * rot[0][1] + point[2] * rot[0][2];
-  dst[1] = point[0] * rot[1][0] + point[1] * rot[1][1] + point[2] * rot[1][2];
-  dst[2] = point[0] * rot[2][0] + point[1] * rot[2][1] + point[2] * rot[2][2];
-}
-
-
-/*
-===============
-RotateAroundDirection
-===============
-*/
-void RotateAroundDirection(vec3_t axis[3], vec_t angle)
-{
-  vec_t scale;
-
-  angle = DEG2RAD(angle);
-
-  // create an arbitrary axis[1] 
-  PerpendicularVector(axis[1], axis[0]);
-
-  // cross to get axis[2]
-  CrossProduct(axis[0], axis[1], axis[2]);
-
-  // rotate
-  scale = cos(angle);
-  VectorScale(axis[1], scale, axis[1]);
-
-  scale = sin(angle);
-  VectorMA(axis[1], scale, axis[2], axis[1]);
-
-  // recalculate axis[2]
-  CrossProduct(axis[0], axis[1], axis[2]);
-}
-
-
-void vectoangles( const vec3_t value1, vec3_t angles ) {
-  float forward;
-  float yaw, pitch;
-
-  if ( value1[1] == 0 && value1[0] == 0 ) {
-    yaw = 0;
-    if ( value1[2] > 0 ) {
-      pitch = 90;
-    }
-    else {
-      pitch = 270;
-    }
-  }
-  else {
-    if ( value1[0] ) {
-      yaw = ( atan2 ( value1[1], value1[0] ) * 180 / M_PI );
-    }
-    else if ( value1[1] > 0 ) {
-      yaw = 90;
-    }
-    else {
-      yaw = 270;
-    }
-    if ( yaw < 0 ) {
-      yaw += 360;
-    }
-
-    forward = sqrt ( value1[0]*value1[0] + value1[1]*value1[1] );
-    pitch = ( atan2(value1[2], forward) * 180 / M_PI );
-    if ( pitch < 0 ) {
-      pitch += 360;
-    }
-  }
-
-  angles[PITCH] = -pitch;
-  angles[YAW] = yaw;
-  angles[ROLL] = 0;
-}
-
-
-/*
-=================
-AxisToAngles
-TA: takes an axis (forward + right + up)
-    and returns angles -- including a roll
-=================
-*/
-void AxisToAngles( vec3_t axis[3], vec3_t angles ) {
-  float length1;
-  float yaw, pitch, roll;
-
-  if ( axis[0][1] == 0 && axis[0][0] == 0 ) {
-    yaw = 0;
-    if ( axis[0][2] > 0 ) {
-      pitch = 90;
-    }
-    else {
-      pitch = 270;
-    }
-  }
-  else {
-    if ( axis[0][0] ) {
-      yaw = ( atan2 ( axis[0][1], axis[0][0] ) * 180 / M_PI );
-    }
-    else if ( axis[0][1] > 0 ) {
-      yaw = 90;
-    }
-    else {
-      yaw = 270;
-    }
-    if ( yaw < 0 ) {
-      yaw += 360;
-    }
-
-    length1 = sqrt ( axis[0][0]*axis[0][0] + axis[0][1]*axis[0][1] );
-    pitch = ( atan2(axis[0][2], length1) * 180 / M_PI );
-    if ( pitch < 0 ) {
-      pitch += 360;
-    }
-
-    roll = ( atan2( axis[1][2], axis[2][2] ) * 180 / M_PI );
-    if ( roll < 0 ) {
-      roll += 360;
-    }
-  }
-
-  angles[PITCH] = -pitch;
-  angles[YAW] = yaw;
-  angles[ROLL] = roll;
-}
-
-/*
-=================
-AnglesToAxis
-=================
-*/
-void AnglesToAxis( const vec3_t angles, vec3_t axis[3] ) {
-  vec3_t  right;
-
-  // angle vectors returns "right" instead of "y axis"
-  AngleVectors( angles, axis[0], right, axis[2] );
-  VectorSubtract( vec3_origin, right, axis[1] );
-}
-
-void AxisClear( vec3_t axis[3] ) {
-  axis[0][0] = 1;
-  axis[0][1] = 0;
-  axis[0][2] = 0;
-  axis[1][0] = 0;
-  axis[1][1] = 1;
-  axis[1][2] = 0;
-  axis[2][0] = 0;
-  axis[2][1] = 0;
-  axis[2][2] = 1;
-}
-
-void AxisCopy( vec3_t in[3], vec3_t out[3] ) {
-  VectorCopy( in[0], out[0] );
-  VectorCopy( in[1], out[1] );
-  VectorCopy( in[2], out[2] );
-}
-
-void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal )
-{
-  float d;
-  vec3_t n;
-  float inv_denom;
-
-  inv_denom = 1.0F / DotProduct( normal, normal );
-
-  d = DotProduct( normal, p ) * inv_denom;
-
-  n[0] = normal[0] * inv_denom;
-  n[1] = normal[1] * inv_denom;
-  n[2] = normal[2] * inv_denom;
-
-  dst[0] = p[0] - d * n[0];
-  dst[1] = p[1] - d * n[1];
-  dst[2] = p[2] - d * n[2];
-}
-
-/*
-================
-MakeNormalVectors
-
-Given a normalized forward vector, create two
-other perpendicular vectors
-================
-*/
-void MakeNormalVectors( const vec3_t forward, vec3_t right, vec3_t up) {
-  float   d;
-
-  // this rotate and negate guarantees a vector
-  // not colinear with the original
-  right[1] = -forward[0];
-  right[2] = forward[1];
-  right[0] = forward[2];
-
-  d = DotProduct (right, forward);
-  VectorMA (right, -d, forward, right);
-  VectorNormalize (right);
-  CrossProduct (right, forward, up);
-}
-
-
-void VectorRotate( vec3_t in, vec3_t matrix[3], vec3_t out )
-{
-  out[0] = DotProduct( in, matrix[0] );
-  out[1] = DotProduct( in, matrix[1] );
-  out[2] = DotProduct( in, matrix[2] );
-}
-
-//============================================================================
-
-/*
-** float q_rsqrt( float number )
-*/
-float Q_rsqrt( float number )
-{
-  long i;
-  float x2, y;
-  const float threehalfs = 1.5F;
-
-  x2 = number * 0.5F;
-  y  = number;
-  i  = * ( long * ) &y;           // evil floating point bit level hacking
-  i  = 0x5f3759df - ( i >> 1 );               // what the fuck?
-  y  = * ( float * ) &i;
-  y  = y * ( threehalfs - ( x2 * y * y ) );   // 1st iteration
-//  y  = y * ( threehalfs - ( x2 * y * y ) );   // 2nd iteration, this can be removed
-
-  return y;
-}
-
-float Q_fabs( float f ) {
-  int tmp = * ( int * ) &f;
-  tmp &= 0x7FFFFFFF;
-  return * ( float * ) &tmp;
-}
-
-//============================================================
-
-/*
-===============
-LerpAngle
-
-===============
-*/
-float LerpAngle (float from, float to, float frac) {
-  float a;
-
-  if ( to - from > 180 ) {
-    to -= 360;
-  }
-  if ( to - from < -180 ) {
-    to += 360;
-  }
-  a = from + frac * (to - from);
-
-  return a;
-}
-
-
-/*
-=================
-AngleSubtract
-
-Always returns a value from -180 to 180
-=================
-*/
-float AngleSubtract( float a1, float a2 ) {
-  float a;
-
-  a = a1 - a2;
-  while ( a > 180 ) {
-    a -= 360;
-  }
-  while ( a < -180 ) {
-    a += 360;
-  }
-  return a;
-}
-
-
-void AnglesSubtract( vec3_t v1, vec3_t v2, vec3_t v3 ) {
-  v3[0] = AngleSubtract( v1[0], v2[0] );
-  v3[1] = AngleSubtract( v1[1], v2[1] );
-  v3[2] = AngleSubtract( v1[2], v2[2] );
-}
-
-
-float AngleMod(float a) {
-  a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535);
-  return a;
-}
-
-
-/*
-=================
-AngleNormalize360
-
-returns angle normalized to the range [0 <= angle < 360]
-=================
-*/
-float AngleNormalize360 ( float angle ) {
-  return (360.0 / 65536) * ((int)(angle * (65536 / 360.0)) & 65535);
-}
-
-
-/*
-=================
-AngleNormalize180
-
-returns angle normalized to the range [-180 < angle <= 180]
-=================
-*/
-float AngleNormalize180 ( float angle ) {
-  angle = AngleNormalize360( angle );
-  if ( angle > 180.0 ) {
-    angle -= 360.0;
-  }
-  return angle;
-}
-
-
-/*
-=================
-AngleDelta
-
-returns the normalized delta from angle1 to angle2
-=================
-*/
-float AngleDelta ( float angle1, float angle2 ) {
-  return AngleNormalize180( angle1 - angle2 );
-}
-
-
-//============================================================
-
-
-/*
-=================
-SetPlaneSignbits
-=================
-*/
-void SetPlaneSignbits (cplane_t *out) {
-  int bits, j;
-
-  // for fast box on planeside test
-  bits = 0;
-  for (j=0 ; j<3 ; j++) {
-    if (out->normal[j] < 0) {
-      bits |= 1<<j;
-    }
-  }
-  out->signbits = bits;
-}
-
-
-/*
-==================
-BoxOnPlaneSide
-
-Returns 1, 2, or 1 + 2
-
-// this is the slow, general version
-int BoxOnPlaneSide2 (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
-{
-  int   i;
-  float dist1, dist2;
-  int   sides;
-  vec3_t  corners[2];
-
-  for (i=0 ; i<3 ; i++)
-  {
-    if (p->normal[i] < 0)
-    {
-      corners[0][i] = emins[i];
-      corners[1][i] = emaxs[i];
-    }
-    else
-    {
-      corners[1][i] = emins[i];
-      corners[0][i] = emaxs[i];
-    }
-  }
-  dist1 = DotProduct (p->normal, corners[0]) - p->dist;
-  dist2 = DotProduct (p->normal, corners[1]) - p->dist;
-  sides = 0;
-  if (dist1 >= 0)
-    sides = 1;
-  if (dist2 < 0)
-    sides |= 2;
-
-  return sides;
-}
-
-==================
-*/
-#if !(defined __linux__ && defined __i386__ && !defined C_ONLY)
-#if defined __LCC__ || defined C_ONLY || !id386
-
-int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
-{
-  float dist1, dist2;
-  int   sides;
-
-// fast axial cases
-  if (p->type < 3)
-  {
-    if (p->dist <= emins[p->type])
-      return 1;
-    if (p->dist >= emaxs[p->type])
-      return 2;
-    return 3;
-  }
-
-// 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:
-    dist1 = dist2 = 0;    // shut up compiler
-    break;
-  }
-
-  sides = 0;
-  if (dist1 >= p->dist)
-    sides = 1;
-  if (dist2 < p->dist)
-    sides |= 2;
-
-  return sides;
-}
-#else
-#pragma warning( disable: 4035 )
-
-__declspec( naked ) int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
-{
-  static int bops_initialized;
-  static int Ljmptab[8];
-
-  __asm {
-
-    push ebx
-
-    cmp bops_initialized, 1
-    je  initialized
-    mov bops_initialized, 1
-
-    mov Ljmptab[0*4], offset Lcase0
-    mov Ljmptab[1*4], offset Lcase1
-    mov Ljmptab[2*4], offset Lcase2
-    mov Ljmptab[3*4], offset Lcase3
-    mov Ljmptab[4*4], offset Lcase4
-    mov Ljmptab[5*4], offset Lcase5
-    mov Ljmptab[6*4], offset Lcase6
-    mov Ljmptab[7*4], offset Lcase7
-
-initialized:
-
-    mov edx,dword ptr[4+12+esp]
-    mov ecx,dword ptr[4+4+esp]
-    xor eax,eax
-    mov ebx,dword ptr[4+8+esp]
-    mov al,byte ptr[17+edx]
-    cmp al,8
-    jge Lerror
-    fld dword ptr[0+edx]
-    fld st(0)
-    jmp dword ptr[Ljmptab+eax*4]
-Lcase0:
-    fmul dword ptr[ebx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ebx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase1:
-    fmul dword ptr[ecx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ebx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase2:
-    fmul dword ptr[ebx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ecx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase3:
-    fmul dword ptr[ecx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ecx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase4:
-    fmul dword ptr[ebx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ebx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase5:
-    fmul dword ptr[ecx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ebx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase6:
-    fmul dword ptr[ebx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ecx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ecx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-    jmp LSetSides
-Lcase7:
-    fmul dword ptr[ecx]
-    fld dword ptr[0+4+edx]
-    fxch st(2)
-    fmul dword ptr[ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[4+ecx]
-    fld dword ptr[0+8+edx]
-    fxch st(2)
-    fmul dword ptr[4+ebx]
-    fxch st(2)
-    fld st(0)
-    fmul dword ptr[8+ecx]
-    fxch st(5)
-    faddp st(3),st(0)
-    fmul dword ptr[8+ebx]
-    fxch st(1)
-    faddp st(3),st(0)
-    fxch st(3)
-    faddp st(2),st(0)
-LSetSides:
-    faddp st(2),st(0)
-    fcomp dword ptr[12+edx]
-    xor ecx,ecx
-    fnstsw ax
-    fcomp dword ptr[12+edx]
-    and ah,1
-    xor ah,1
-    add cl,ah
-    fnstsw ax
-    and ah,1
-    add ah,ah
-    add cl,ah
-    pop ebx
-    mov eax,ecx
-    ret
-Lerror:
-    int 3
-  }
-}
-#pragma warning( default: 4035 )
-
-#endif
-#endif
-
-/*
-=================
-RadiusFromBounds
-=================
-*/
-float RadiusFromBounds( const vec3_t mins, const vec3_t maxs ) {
-  int   i;
-  vec3_t  corner;
-  float a, b;
-
-  for (i=0 ; i<3 ; i++) {
-    a = fabs( mins[i] );
-    b = fabs( maxs[i] );
-    corner[i] = a > b ? a : b;
-  }
-
-  return VectorLength (corner);
-}
-
-
-void ClearBounds( vec3_t mins, vec3_t maxs ) {
-  mins[0] = mins[1] = mins[2] = 99999;
-  maxs[0] = maxs[1] = maxs[2] = -99999;
-}
-
-void AddPointToBounds( const vec3_t v, vec3_t mins, vec3_t maxs ) {
-  if ( v[0] < mins[0] ) {
-    mins[0] = v[0];
-  }
-  if ( v[0] > maxs[0]) {
-    maxs[0] = v[0];
-  }
-
-  if ( v[1] < mins[1] ) {
-    mins[1] = v[1];
-  }
-  if ( v[1] > maxs[1]) {
-    maxs[1] = v[1];
-  }
-
-  if ( v[2] < mins[2] ) {
-    mins[2] = v[2];
-  }
-  if ( v[2] > maxs[2]) {
-    maxs[2] = v[2];
-  }
-}
-
-
-int VectorCompare( const vec3_t v1, const vec3_t v2 ) {
-  if (v1[0] != v2[0] || v1[1] != v2[1] || v1[2] != v2[2]) {
-    return 0;
-  }
-
-  return 1;
-}
-
-
-vec_t VectorNormalize( vec3_t v ) {
-  float length, ilength;
-
-  length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
-  length = sqrt (length);
-
-  if ( length ) {
-    ilength = 1/length;
-    v[0] *= ilength;
-    v[1] *= ilength;
-    v[2] *= ilength;
-  }
-
-  return length;
-}
-
-//
-// fast vector normalize routine that does not check to make sure
-// that length != 0, nor does it return length
-//
-void VectorNormalizeFast( vec3_t v )
-{
-  float ilength;
-
-  ilength = Q_rsqrt( DotProduct( v, v ) );
-
-  v[0] *= ilength;
-  v[1] *= ilength;
-  v[2] *= ilength;
-}
-
-vec_t VectorNormalize2( const vec3_t v, vec3_t out) {
-  float length, ilength;
-
-  length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
-  length = sqrt (length);
-
-  if (length)
-  {
-    ilength = 1/length;
-    out[0] = v[0]*ilength;
-    out[1] = v[1]*ilength;
-    out[2] = v[2]*ilength;
-  } else {
-    VectorClear( out );
-  }
-
-  return length;
-
-}
-
-void _VectorMA( const vec3_t veca, float scale, const vec3_t vecb, vec3_t vecc) {
-  vecc[0] = veca[0] + scale*vecb[0];
-  vecc[1] = veca[1] + scale*vecb[1];
-  vecc[2] = veca[2] + scale*vecb[2];
-}
-
-
-vec_t _DotProduct( const vec3_t v1, const vec3_t v2 ) {
-  return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
-}
-
-void _VectorSubtract( const vec3_t veca, const vec3_t vecb, vec3_t out ) {
-  out[0] = veca[0]-vecb[0];
-  out[1] = veca[1]-vecb[1];
-  out[2] = veca[2]-vecb[2];
-}
-
-void _VectorAdd( const vec3_t veca, const vec3_t vecb, vec3_t out ) {
-  out[0] = veca[0]+vecb[0];
-  out[1] = veca[1]+vecb[1];
-  out[2] = veca[2]+vecb[2];
-}
-
-void _VectorCopy( const vec3_t in, vec3_t out ) {
-  out[0] = in[0];
-  out[1] = in[1];
-  out[2] = in[2];
-}
-
-void _VectorScale( const vec3_t in, vec_t scale, vec3_t out ) {
-  out[0] = in[0]*scale;
-  out[1] = in[1]*scale;
-  out[2] = in[2]*scale;
-}
-
-void CrossProduct( const vec3_t v1, const vec3_t v2, vec3_t cross ) {
-  cross[0] = v1[1]*v2[2] - v1[2]*v2[1];
-  cross[1] = v1[2]*v2[0] - v1[0]*v2[2];
-  cross[2] = v1[0]*v2[1] - v1[1]*v2[0];
-}
-
-vec_t VectorLength( const vec3_t v ) {
-  return sqrt (v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
-}
-
-
-vec_t VectorLengthSquared( const vec3_t v ) {
-    return (v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
-}
-
-
-vec_t Distance( const vec3_t p1, const vec3_t p2 ) {
-  vec3_t  v;
-
-  VectorSubtract (p2, p1, v);
-  return VectorLength( v );
-}
-
-vec_t DistanceSquared( const vec3_t p1, const vec3_t p2 ) {
-  vec3_t  v;
-
-  VectorSubtract (p2, p1, v);
-  return v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
-}
-
-
-void VectorInverse( vec3_t v ){
-  v[0] = -v[0];
-  v[1] = -v[1];
-  v[2] = -v[2];
-}
-
-void Vector4Scale( const vec4_t in, vec_t scale, vec4_t out ) {
-  out[0] = in[0]*scale;
-  out[1] = in[1]*scale;
-  out[2] = in[2]*scale;
-  out[3] = in[3]*scale;
-}
-
-
-int Q_log2( int val ) {
-  int answer;
-
-  answer = 0;
-  while ( ( val>>=1 ) != 0 ) {
-    answer++;
-  }
-  return answer;
-}
-
-
-
-/*
-=================
-PlaneTypeForNormal
-=================
-*/
-/*
-int PlaneTypeForNormal (vec3_t normal) {
-  if ( normal[0] == 1.0 )
-    return PLANE_X;
-  if ( normal[1] == 1.0 )
-    return PLANE_Y;
-  if ( normal[2] == 1.0 )
-    return PLANE_Z;
-
-  return PLANE_NON_AXIAL;
-}
-*/
-
-
-/*
-================
-MatrixMultiply
-================
-*/
-void MatrixMultiply(float in1[3][3], float in2[3][3], float out[3][3]) {
-  out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] +
-        in1[0][2] * in2[2][0];
-  out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] +
-        in1[0][2] * in2[2][1];
-  out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] +
-        in1[0][2] * in2[2][2];
-  out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] +
-        in1[1][2] * in2[2][0];
-  out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] +
-        in1[1][2] * in2[2][1];
-  out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] +
-        in1[1][2] * in2[2][2];
-  out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] +
-        in1[2][2] * in2[2][0];
-  out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] +
-        in1[2][2] * in2[2][1];
-  out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] +
-        in1[2][2] * in2[2][2];
-}
-
-
-void AngleVectors( const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up) {
-  float   angle;
-  static float    sr, sp, sy, cr, cp, cy;
-  // static to help MS compiler fp bugs
-
-  angle = angles[YAW] * (M_PI*2 / 360);
-  sy = sin(angle);
-  cy = cos(angle);
-  angle = angles[PITCH] * (M_PI*2 / 360);
-  sp = sin(angle);
-  cp = cos(angle);
-  angle = angles[ROLL] * (M_PI*2 / 360);
-  sr = sin(angle);
-  cr = cos(angle);
-
-  if (forward)
-  {
-    forward[0] = cp*cy;
-    forward[1] = cp*sy;
-    forward[2] = -sp;
-  }
-  if (right)
-  {
-    right[0] = (-1*sr*sp*cy+-1*cr*-sy);
-    right[1] = (-1*sr*sp*sy+-1*cr*cy);
-    right[2] = -1*sr*cp;
-  }
-  if (up)
-  {
-    up[0] = (cr*sp*cy+-sr*-sy);
-    up[1] = (cr*sp*sy+-sr*cy);
-    up[2] = cr*cp;
-  }
-}
-
-/*
-** assumes "src" is normalized
-*/
-void PerpendicularVector( vec3_t dst, const vec3_t src )
-{
-  int pos;
-  int i;
-  float minelem = 1.0F;
-  vec3_t tempvec;
-
-  /*
-  ** find the smallest magnitude axially aligned vector
-  */
-  for ( pos = 0, i = 0; i < 3; i++ )
-  {
-    if ( fabs( src[i] ) < minelem )
-    {
-      pos = i;
-      minelem = fabs( src[i] );
-    }
-  }
-  tempvec[0] = tempvec[1] = tempvec[2] = 0.0F;
-  tempvec[pos] = 1.0F;
-
-  /*
-  ** project the point onto the plane defined by src
-  */
-  ProjectPointOnPlane( dst, tempvec, src );
-
-  /*
-  ** normalize the result
-  */
-  VectorNormalize( dst );
-}
-
-float arccos( float x )
-{
-  return atan2( sqrt( 1.0 - x * x ) / x, x );
-}
-