fox-toolkit.org - Documentation

00001 /********************************************************************************
00002 *                                                                               *
00003 *       S i n g l e - P r e c i s i o n   3 - E l e m e n t   V e c t o r       *
00004 *                                                                               *
00005 *********************************************************************************
00006 * Copyright (C) 1994,2012 by Jeroen van der Zijp.   All Rights Reserved.        *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or modify          *
00009 * it under the terms of the GNU Lesser General Public License as published by   *
00010 * the Free Software Foundation; either version 3 of the License, or             *
00011 * (at your option) any later version.                                           *
00012 *                                                                               *
00013 * This library is distributed in the hope that it will be useful,               *
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of                *
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                 *
00016 * GNU Lesser General Public License for more details.                           *
00017 *                                                                               *
00018 * You should have received a copy of the GNU Lesser General Public License      *
00019 * along with this program.  If not, see <http://www.gnu.org/licenses/>          *
00020 ********************************************************************************/
00021 #ifndef FXVEC3F_H
00022 #define FXVEC3F_H
00023 
00024 
00025 namespace FX {
00026 
00027 
00029 class FXAPI FXVec3f {
00030 public:
00031   FXfloat x;
00032   FXfloat y;
00033   FXfloat z;
00034 public:
00035 
00037   FXVec3f(){}
00038 
00040   FXVec3f(const FXVec2f& v,FXfloat s=0.0f):x(v.x),y(v.y),z(s){}
00041 
00043   FXVec3f(const FXVec3f& v):x(v.x),y(v.y),z(v.z){}
00044 
00046   FXVec3f(const FXfloat v[]):x(v[0]),y(v[1]),z(v[2]){}
00047 
00049   FXVec3f(FXfloat xx,FXfloat yy,FXfloat zz):x(xx),y(yy),z(zz){}
00050 
00052   FXfloat& operator[](FXint i){return (&x)[i];}
00053 
00055   const FXfloat& operator[](FXint i) const {return (&x)[i];}
00056 
00058   FXVec3f& operator=(const FXVec3f& v){x=v.x;y=v.y;z=v.z;return *this;}
00059 
00061   FXVec3f& operator=(const FXfloat v[]){x=v[0];y=v[1];z=v[2];return *this;}
00062 
00064   FXVec3f& set(const FXVec3f& v){x=v.x;y=v.y;z=v.z;return *this;}
00065 
00067   FXVec3f& set(const FXfloat v[]){x=v[0];y=v[1];z=v[2];return *this;}
00068 
00070   FXVec3f& set(FXfloat xx,FXfloat yy,FXfloat zz){x=xx;y=yy;z=zz;return *this;}
00071 
00073   FXVec3f& operator*=(FXfloat n){ return set(x*n,y*n,z*n); }
00074   FXVec3f& operator/=(FXfloat n){ return set(x/n,y/n,z/n); }
00075   FXVec3f& operator+=(const FXVec3f& v){ return set(x+v.x,y+v.y,z+v.z); }
00076   FXVec3f& operator-=(const FXVec3f& v){ return set(x-v.x,y-v.y,z-v.z); }
00077   FXVec3f& operator^=(const FXVec3f& v){ return set(y*v.z-z*v.y,z*v.x-x*v.z,x*v.y-y*v.x); }
00078 
00080   operator FXfloat*(){return &x;}
00081   operator const FXfloat*() const {return &x;}
00082   operator FXVec2f&(){return *reinterpret_cast<FXVec2f*>(this);}
00083   operator const FXVec2f&() const {return *reinterpret_cast<const FXVec2f*>(this);}
00084 
00086   FXbool operator!() const { return x==0.0f && y==0.0f && z==0.0f; }
00087 
00089   FXVec3f operator+() const { return *this; }
00090   FXVec3f operator-() const { return FXVec3f(-x,-y,-z); }
00091 
00093   FXfloat length2() const { return x*x+y*y+z*z; }
00094   FXfloat length() const { return sqrtf(length2()); }
00095 
00097   FXVec3f& clamp(FXfloat lo,FXfloat hi){ return set(FXCLAMP(lo,x,hi),FXCLAMP(lo,y,hi),FXCLAMP(lo,z,hi)); }
00098 
00100  ~FXVec3f(){}
00101   };
00102 
00103 
00105 inline FXfloat operator*(const FXVec3f& a,const FXVec3f& b){ return a.x*b.x+a.y*b.y+a.z*b.z; }
00106 
00108 inline FXVec3f operator^(const FXVec3f& a,const FXVec3f& b){ return FXVec3f(a.y*b.z-a.z*b.y, a.z*b.x-a.x*b.z, a.x*b.y-a.y*b.x); }
00109 
00111 inline FXVec3f operator*(const FXVec3f& a,FXfloat n){return FXVec3f(a.x*n,a.y*n,a.z*n);}
00112 inline FXVec3f operator*(FXfloat n,const FXVec3f& a){return FXVec3f(n*a.x,n*a.y,n*a.z);}
00113 inline FXVec3f operator/(const FXVec3f& a,FXfloat n){return FXVec3f(a.x/n,a.y/n,a.z/n);}
00114 inline FXVec3f operator/(FXfloat n,const FXVec3f& a){return FXVec3f(n/a.x,n/a.y,n/a.z);}
00115 
00117 inline FXVec3f operator+(const FXVec3f& a,const FXVec3f& b){ return FXVec3f(a.x+b.x,a.y+b.y,a.z+b.z); }
00118 inline FXVec3f operator-(const FXVec3f& a,const FXVec3f& b){ return FXVec3f(a.x-b.x,a.y-b.y,a.z-b.z); }
00119 
00121 inline FXbool operator==(const FXVec3f& a,FXfloat n){return a.x==n && a.y==n && a.z==n;}
00122 inline FXbool operator!=(const FXVec3f& a,FXfloat n){return a.x!=n || a.y!=n || a.z!=n;}
00123 inline FXbool operator==(FXfloat n,const FXVec3f& a){return n==a.x && n==a.y && n==a.z;}
00124 inline FXbool operator!=(FXfloat n,const FXVec3f& a){return n!=a.x || n!=a.y || n!=a.z;}
00125 
00127 inline FXbool operator==(const FXVec3f& a,const FXVec3f& b){ return a.x==b.x && a.y==b.y && a.z==b.z; }
00128 inline FXbool operator!=(const FXVec3f& a,const FXVec3f& b){ return a.x!=b.x || a.y!=b.y || a.z!=b.z; }
00129 
00131 inline FXbool operator<(const FXVec3f& a,FXfloat n){return a.x<n && a.y<n && a.z<n;}
00132 inline FXbool operator<=(const FXVec3f& a,FXfloat n){return a.x<=n && a.y<=n && a.z<=n;}
00133 inline FXbool operator>(const FXVec3f& a,FXfloat n){return a.x>n && a.y>n && a.z>n;}
00134 inline FXbool operator>=(const FXVec3f& a,FXfloat n){return a.x>=n && a.y>=n && a.z>=n;}
00135 
00137 inline FXbool operator<(FXfloat n,const FXVec3f& a){return n<a.x && n<a.y && n<a.z;}
00138 inline FXbool operator<=(FXfloat n,const FXVec3f& a){return n<=a.x && n<=a.y && n<=a.z;}
00139 inline FXbool operator>(FXfloat n,const FXVec3f& a){return n>a.x && n>a.y && n>a.z;}
00140 inline FXbool operator>=(FXfloat n,const FXVec3f& a){return n>=a.x && n>=a.y && n>=a.z;}
00141 
00143 inline FXbool operator<(const FXVec3f& a,const FXVec3f& b){ return a.x<b.x && a.y<b.y && a.z<b.z; }
00144 inline FXbool operator<=(const FXVec3f& a,const FXVec3f& b){ return a.x<=b.x && a.y<=b.y && a.z<=b.z; }
00145 inline FXbool operator>(const FXVec3f& a,const FXVec3f& b){ return a.x>b.x && a.y>b.y && a.z>b.z; }
00146 inline FXbool operator>=(const FXVec3f& a,const FXVec3f& b){ return a.x>=b.x && a.y>=b.y && a.z>=b.z; }
00147 
00149 inline FXVec3f lo(const FXVec3f& a,const FXVec3f& b){return FXVec3f(FXMIN(a.x,b.x),FXMIN(a.y,b.y),FXMIN(a.z,b.z));}
00150 inline FXVec3f hi(const FXVec3f& a,const FXVec3f& b){return FXVec3f(FXMAX(a.x,b.x),FXMAX(a.y,b.y),FXMAX(a.z,b.z));}
00151 
00153 extern FXAPI FXColor colorFromVec3f(const FXVec3f& vec);
00154 
00156 extern FXAPI FXVec3f colorToVec3f(FXColor clr);
00157 
00159 extern FXAPI FXVec3f normal(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c);
00160 
00162 extern FXAPI FXVec3f normal(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c,const FXVec3f& d);
00163 
00165 extern FXAPI FXVec3f normalize(const FXVec3f& v);
00166 extern FXAPI FXVec3f fastnormalize(const FXVec3f& v);
00167 
00169 extern FXAPI FXVec3f lerp(const FXVec3f& u,const FXVec3f& v,FXfloat f);
00170 
00172 extern FXAPI FXStream& operator<<(FXStream& store,const FXVec3f& v);
00173 
00175 extern FXAPI FXStream& operator>>(FXStream& store,FXVec3f& v);
00176 
00177 }
00178 
00179 #endif