+++ /dev/null
-/*
-Copyright (C) 1999-2006 Id Software, Inc. and contributors.
-For a list of contributors, see the accompanying CONTRIBUTORS file.
-
-This file is part of GtkRadiant.
-
-GtkRadiant 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 of the License, or
-(at your option) any later version.
-
-GtkRadiant 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 GtkRadiant; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#ifndef __MATH_QUATERNION_H__
-#define __MATH_QUATERNION_H__
-
-#include <assert.h>
-#include <math.h>
-
-class idVec3_t;
-class angles_t;
-class mat3_t;
-
-class quat_t {
-public:
- float x;
- float y;
- float z;
- float w;
-
- quat_t();
- quat_t( float x, float y, float z, float w );
-
- friend void toQuat( idVec3_t &src, quat_t &dst );
- friend void toQuat( angles_t &src, quat_t &dst );
- friend void toQuat( mat3_t &src, quat_t &dst );
-
- float *vec4( void );
-
- float operator[]( int index ) const;
- float &operator[]( int index );
-
- void set( float x, float y, float z, float w );
-
- void operator=( quat_t a );
-
- friend quat_t operator+( quat_t a, quat_t b );
- quat_t &operator+=( quat_t a );
-
- friend quat_t operator-( quat_t a, quat_t b );
- quat_t &operator-=( quat_t a );
-
- friend quat_t operator*( quat_t a, float b );
- friend quat_t operator*( float a, quat_t b );
- quat_t &operator*=( float a );
-
- friend int operator==( quat_t a, quat_t b );
- friend int operator!=( quat_t a, quat_t b );
-
- float Length( void );
- quat_t &Normalize( void );
-
- quat_t operator-();
-};
-
-inline quat_t::quat_t() {
-}
-
-inline quat_t::quat_t( float x, float y, float z, float w ) {
- this->x = x;
- this->y = y;
- this->z = z;
- this->w = w;
-}
-
-inline float *quat_t::vec4( void ) {
- return &x;
-}
-
-inline float quat_t::operator[]( int index ) const {
- assert( ( index >= 0 ) && ( index < 4 ) );
- return ( &x )[ index ];
-}
-
-inline float& quat_t::operator[]( int index ) {
- assert( ( index >= 0 ) && ( index < 4 ) );
- return ( &x )[ index ];
-}
-
-inline void quat_t::set( float x, float y, float z, float w ) {
- this->x = x;
- this->y = y;
- this->z = z;
- this->w = w;
-}
-
-inline void quat_t::operator=( quat_t a ) {
- x = a.x;
- y = a.y;
- z = a.z;
- w = a.w;
-}
-
-inline quat_t operator+( quat_t a, quat_t b ) {
- return quat_t( a.x + b.x, a.y + b.y, a.z + b.z, a.w + b.w );
-}
-
-inline quat_t& quat_t::operator+=( quat_t a ) {
- x += a.x;
- y += a.y;
- z += a.z;
- w += a.w;
-
- return *this;
-}
-
-inline quat_t operator-( quat_t a, quat_t b ) {
- return quat_t( a.x - b.x, a.y - b.y, a.z - b.z, a.w - b.w );
-}
-
-inline quat_t& quat_t::operator-=( quat_t a ) {
- x -= a.x;
- y -= a.y;
- z -= a.z;
- w -= a.w;
-
- return *this;
-}
-
-inline quat_t operator*( quat_t a, float b ) {
- return quat_t( a.x * b, a.y * b, a.z * b, a.w * b );
-}
-
-inline quat_t operator*( float a, quat_t b ) {
- return b * a;
-}
-
-inline quat_t& quat_t::operator*=( float a ) {
- x *= a;
- y *= a;
- z *= a;
- w *= a;
-
- return *this;
-}
-
-inline int operator==( quat_t a, quat_t b ) {
- return ( ( a.x == b.x ) && ( a.y == b.y ) && ( a.z == b.z ) && ( a.w == b.w ) );
-}
-
-inline int operator!=( quat_t a, quat_t b ) {
- return ( ( a.x != b.x ) || ( a.y != b.y ) || ( a.z != b.z ) && ( a.w != b.w ) );
-}
-
-inline float quat_t::Length( void ) {
- float length;
-
- length = x * x + y * y + z * z + w * w;
- return ( float )sqrt( length );
-}
-
-inline quat_t& quat_t::Normalize( void ) {
- float length;
- float ilength;
-
- length = this->Length();
- if ( length ) {
- ilength = 1 / length;
- x *= ilength;
- y *= ilength;
- z *= ilength;
- w *= ilength;
- }
-
- return *this;
-}
-
-inline quat_t quat_t::operator-() {
- return quat_t( -x, -y, -z, -w );
-}
-
-#endif /* !__MATH_QUATERNION_H__ */