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00001 /******************************************************************************** 00002 * * 00003 * H o m o g e n e o u s D o u b l e - V e c t o r O p e r a t i o n s * 00004 * * 00005 ********************************************************************************* 00006 * Copyright (C) 1994,2002 by Jeroen van der Zijp. All Rights Reserved. * 00007 ********************************************************************************* 00008 * This library is free software; you can redistribute it and/or * 00009 * modify it under the terms of the GNU Lesser General Public * 00010 * License as published by the Free Software Foundation; either * 00011 * version 2.1 of the License, or (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 GNU * 00016 * Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public * 00019 * License along with this library; if not, write to the Free Software * 00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * 00021 ********************************************************************************* 00022 * $Id: FXDHVec.h,v 1.11 2002/04/03 13:50:30 fox Exp $ * 00023 ********************************************************************************/ 00024 #ifndef FXDHVEC_H 00025 #define FXDHVEC_H 00026 00027 namespace FX { 00028 00029 00030 /// Homogeneous vector (double-precision version) 00031 class FXAPI FXDHVec { 00032 protected: 00033 FXdouble v[4]; 00034 public: 00035 00036 /// Default constructor 00037 FXDHVec(){} 00038 00039 /// Copy constructor 00040 FXDHVec(const FXDHVec& w){v[0]=w.v[0];v[1]=w.v[1];v[2]=w.v[2];v[3]=w.v[3];} 00041 00042 /// Initialize with components 00043 FXDHVec(FXdouble x,FXdouble y,FXdouble z,FXdouble w=1.0){v[0]=x;v[1]=y;v[2]=z;v[3]=w;} 00044 00045 /// Initialize with 3-vector 00046 FXDHVec(const FXDVec& w){v[0]=w[0];v[1]=w[1];v[2]=w[2];v[3]=1.0;} 00047 00048 00049 /// Initialize with color 00050 FXDHVec(FXColor color); 00051 00052 /// Return a non-const reference to the ith element 00053 FXdouble& operator[](FXint i){return v[i];} 00054 00055 /// Return a const reference to the ith element 00056 const FXdouble& operator[](FXint i) const {return v[i];} 00057 00058 /// Assign color 00059 FXDHVec& operator=(FXColor color); 00060 00061 /// Assignment 00062 FXDHVec& operator=(const FXDHVec& w){v[0]=w.v[0];v[1]=w.v[1];v[2]=w.v[2];v[3]=w.v[3];return *this;} 00063 FXDHVec& operator=(const FXDVec& w){v[0]=w[0];v[1]=w[1];v[2]=w[2];v[3]=1.0F;return *this;} 00064 00065 00066 /// Assigning operators 00067 FXDHVec& operator+=(const FXDHVec& a){v[0]+=a.v[0];v[1]+=a.v[1];v[2]+=a.v[2];v[3]+=a.v[3];return *this;} 00068 FXDHVec& operator-=(const FXDHVec& a){v[0]-=a.v[0];v[1]-=a.v[1];v[2]-=a.v[2];v[3]-=a.v[3];return *this;} 00069 FXDHVec& operator*=(FXdouble n){v[0]*=n;v[1]*=n;v[2]*=n;v[3]*=n;return *this;} 00070 FXDHVec& operator/=(FXdouble n){v[0]/=n;v[1]/=n;v[2]/=n;v[3]/=n;return *this;} 00071 00072 /// Conversions 00073 operator FXdouble*(){return v;} 00074 operator const FXdouble*() const {return v;} 00075 00076 /// Convert to color 00077 operator FXColor() const; 00078 00079 /// Other operators 00080 friend FXDHVec operator-(const FXDHVec& a){return FXDHVec(-a.v[0],-a.v[1],-a.v[2],-a.v[3]);} 00081 friend FXDHVec operator!(const FXDHVec& a){return a.v[0]==0.0 && a.v[1]==0.0 && a.v[2]==0.0 && a.v[3]==0.0;} 00082 friend FXDHVec operator+(const FXDHVec& a,const FXDHVec& b){return FXDHVec(a.v[0]+b.v[0],a.v[1]+b.v[1],a.v[2]+b.v[2],a.v[3]+b.v[3]);} 00083 friend FXDHVec operator-(const FXDHVec& a,const FXDHVec& b){return FXDHVec(a.v[0]-b.v[0],a.v[1]-b.v[1],a.v[2]-b.v[2],a.v[3]-b.v[3]);} 00084 friend FXDHVec operator*(const FXDHVec& a,FXdouble n){return FXDHVec(a.v[0]*n,a.v[1]*n,a.v[2]*n,a.v[3]*n);} 00085 friend FXDHVec operator*(FXdouble n,const FXDHVec& a){return FXDHVec(n*a.v[0],n*a.v[1],n*a.v[2],n*a.v[3]);} 00086 friend FXDHVec operator/(const FXDHVec& a,FXdouble n){return FXDHVec(a.v[0]/n,a.v[1]/n,a.v[2]/n,a.v[3]/n);} 00087 friend FXDHVec operator/(FXdouble n,const FXDHVec& a){return FXDHVec(n/a.v[0],n/a.v[1],n/a.v[2],n/a.v[3]);} 00088 00089 /// Dot product 00090 friend FXdouble operator*(const FXDHVec& a,const FXDHVec& b){return a.v[0]*b.v[0]+a.v[1]*b.v[1]+a.v[2]*b.v[2]+a.v[3]*b.v[3];} 00091 00092 /// Equality tests 00093 friend int operator==(const FXDHVec& a,const FXDHVec& b){return a.v[0]==b.v[0] && a.v[1]==b.v[1] && a.v[2]==b.v[2] && a.v[3]==b.v[3];} 00094 friend int operator==(const FXDHVec& a,FXdouble n){return a.v[0]==n && a.v[1]==n && a.v[2]==n && a.v[3]==n;} 00095 friend int operator==(FXdouble n,const FXDHVec& a){return n==a.v[0] && n==a.v[1] && n==a.v[2] && n==a.v[3];} 00096 friend int operator!=(const FXDHVec& a,const FXDHVec& b){return a.v[0]!=b.v[0] || a.v[1]!=b.v[1] || a.v[2]!=b.v[2] || a.v[3]!=b.v[3];} 00097 friend int operator!=(const FXDHVec& a,FXdouble n){return a.v[0]!=n || a.v[1]!=n || a.v[2]!=n || a.v[3]!=n;} 00098 friend int operator!=(FXdouble n,const FXDHVec& a){return n!=a.v[0] || n!=a.v[1] || n!=a.v[2] || n!=a.v[3];} 00099 00100 /// Other functions 00101 friend FXAPI FXdouble len(const FXDHVec& a); 00102 friend FXAPI FXDHVec normalize(const FXDHVec& a); 00103 friend FXAPI FXDHVec lo(const FXDHVec& a,const FXDHVec& b); 00104 friend FXAPI FXDHVec hi(const FXDHVec& a,const FXDHVec& b); 00105 00106 /// Save to a stream 00107 friend FXAPI FXStream& operator<<(FXStream& store,const FXDHVec& v); 00108 00109 /// Load from a stream 00110 friend FXAPI FXStream& operator>>(FXStream& store,FXDHVec& v); 00111 }; 00112 00113 } 00114 00115 #endif