psp/math.hpp

   1 /*
   2 Copyright (C) 2007 Peter Mackay and Chris Swindle.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #ifndef QUAKE_MATH_HPP
  22 #define QUAKE_MATH_HPP
  23
  24 #include <math.h>
  25 #include <psptypes.h>
  26
  27 namespace quake
  28 {
  29         namespace math
  30         {
  31                 static inline float dot(const ScePspFVector4& a, const ScePspFVector4& b)
  32                 {
  33                         return (a.x * b.x) + (a.y * b.y) + (a.z * b.z);
  34                 }
  35
  36                 static inline void normalise(ScePspFVector4* v)
  37                 {
  38                         const float scale = 1.0f / sqrtf(dot(*v, *v));
  39                         v->x *= scale;
  40                         v->y *= scale;
  41                         v->z *= scale;
  42                         v->w *= scale;
  43                 }
  44
  45                 void multiply(const ScePspFMatrix4& a, const ScePspFMatrix4& b, ScePspFMatrix4* out);
  46         }
  47 }
  48
  49 #endif