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<h1>FXVec2d.h</h1><div class="fragment"><pre>00001 <span class="comment">/********************************************************************************</span>
00002 <span class="comment">* *</span>
00003 <span class="comment">* D o u b l e - P r e c i s i o n 2 - E l e m e n t V e c t o r *</span>
00004 <span class="comment">* *</span>
00005 <span class="comment">*********************************************************************************</span>
00006 <span class="comment">* Copyright (C) 1994,2004 by Jeroen van der Zijp. All Rights Reserved. *</span>
00007 <span class="comment">*********************************************************************************</span>
00008 <span class="comment">* This library is free software; you can redistribute it and/or *</span>
00009 <span class="comment">* modify it under the terms of the GNU Lesser General Public *</span>
00010 <span class="comment">* License as published by the Free Software Foundation; either *</span>
00011 <span class="comment">* version 2.1 of the License, or (at your option) any later version. *</span>
00012 <span class="comment">* *</span>
00013 <span class="comment">* This library is distributed in the hope that it will be useful, *</span>
00014 <span class="comment">* but WITHOUT ANY WARRANTY; without even the implied warranty of *</span>
00015 <span class="comment">* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *</span>
00016 <span class="comment">* Lesser General Public License for more details. *</span>
00017 <span class="comment">* *</span>
00018 <span class="comment">* You should have received a copy of the GNU Lesser General Public *</span>
00019 <span class="comment">* License along with this library; if not, write to the Free Software *</span>
00020 <span class="comment">* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *</span>
00021 <span class="comment">*********************************************************************************</span>
00022 <span class="comment">* $Id: FXVec2d.h,v 1.3 2004/02/08 17:17:34 fox Exp $ *</span>
00023 <span class="comment">********************************************************************************/</span>
00024 <span class="preprocessor">#ifndef FXVEC2D_H</span>
00025 <span class="preprocessor"></span><span class="preprocessor">#define FXVEC2D_H</span>
00026 <span class="preprocessor"></span>
00027
00028 <span class="keyword">namespace </span>FX {
00029
00030 <span class="comment"></span>
00031 <span class="comment">/// Double-precision 2-element vector</span>
<a name="l00032"></a><a class="code" href="classFX_1_1FXVec2d.html">00032</a> <span class="comment"></span><span class="keyword">class </span>FXAPI FXVec2d {
00033 <span class="keyword">public</span>:
00034 FXdouble x;
00035 FXdouble y;
00036 <span class="keyword">public</span>:
00037 <span class="comment"></span>
00038 <span class="comment"> /// Default constructor</span>
<a name="l00039"></a><a class="code" href="classFX_1_1FXVec2d.html#a0">00039</a> <span class="comment"></span> FXVec2d(){}
00040 <span class="comment"></span>
00041 <span class="comment"> /// Copy constructor</span>
<a name="l00042"></a><a class="code" href="classFX_1_1FXVec2d.html#a1">00042</a> <span class="comment"></span> FXVec2d(<span class="keyword">const</span> FXVec2d& v){x=v.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>;y=v.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>;}
00043
00044 <span class="comment">// Initialize from array of floats</span>
00045 FXVec2d(<span class="keyword">const</span> FXdouble v[]){x=v[0];y=v[1];}
00046 <span class="comment"></span>
00047 <span class="comment"> /// Initialize with components</span>
<a name="l00048"></a><a class="code" href="classFX_1_1FXVec2d.html#a3">00048</a> <span class="comment"></span> FXVec2d(FXdouble xx,FXdouble yy){x=xx;y=yy;}
00049 <span class="comment"></span>
00050 <span class="comment"> /// Return a non-const reference to the ith element</span>
<a name="l00051"></a><a class="code" href="classFX_1_1FXVec2d.html#a4">00051</a> <span class="comment"></span> FXdouble& operator[](FXint i){<span class="keywordflow">return</span> (&x)[i];}
00052 <span class="comment"></span>
00053 <span class="comment"> /// Return a const reference to the ith element</span>
<a name="l00054"></a><a class="code" href="classFX_1_1FXVec2d.html#a5">00054</a> <span class="comment"></span> <span class="keyword">const</span> FXdouble& operator[](FXint i)<span class="keyword"> const </span>{<span class="keywordflow">return</span> (&x)[i];}
00055 <span class="comment"></span>
00056 <span class="comment"> /// Assignment</span>
<a name="l00057"></a><a class="code" href="classFX_1_1FXVec2d.html#a6">00057</a> <span class="comment"></span> FXVec2d& operator=(<span class="keyword">const</span> FXVec2d& v){x=v.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>;y=v.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>;<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00058 <span class="comment"></span>
00059 <span class="comment"> /// Assignment from array of floats</span>
<a name="l00060"></a><a class="code" href="classFX_1_1FXVec2d.html#a7">00060</a> <span class="comment"></span> FXVec2d& operator=(<span class="keyword">const</span> FXdouble v[]){x=v[0];y=v[1];<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00061 <span class="comment"></span>
00062 <span class="comment"> /// Assigning operators</span>
<a name="l00063"></a><a class="code" href="classFX_1_1FXVec2d.html#a8">00063</a> <span class="comment"></span> FXVec2d& operator*=(FXdouble n){x*=n;y*=n;<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00064 FXVec2d& operator/=(FXdouble n){x/=n;y/=n;<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00065 FXVec2d& operator+=(<span class="keyword">const</span> FXVec2d& v){x+=v.x;y+=v.y;<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00066 FXVec2d& operator-=(<span class="keyword">const</span> FXVec2d& v){x-=v.x;y-=v.y;<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00067 <span class="comment"></span>
00068 <span class="comment"> /// Conversions</span>
<a name="l00069"></a><a class="code" href="classFX_1_1FXVec2d.html#a12">00069</a> <span class="comment"></span> operator FXdouble*(){<span class="keywordflow">return</span> &x;}
00070 operator const FXdouble*()<span class="keyword"> const </span>{<span class="keywordflow">return</span> &x;}
00071 <span class="comment"></span>
00072 <span class="comment"> /// Unary</span>
<a name="l00073"></a><a class="code" href="classFX_1_1FXVec2d.html#n0">00073</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXVec2d operator+(<span class="keyword">const</span> FXVec2d& v){<span class="keywordflow">return</span> v;}
00074 <span class="keyword">friend</span> FXAPI FXVec2d operator-(<span class="keyword">const</span> FXVec2d& v){<span class="keywordflow">return</span> FXVec2d(-v.x,-v.y);}
00075 <span class="comment"></span>
00076 <span class="comment"> /// Adding</span>
<a name="l00077"></a><a class="code" href="classFX_1_1FXVec2d.html#n2">00077</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXVec2d operator+(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> FXVec2d(a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>+b.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>,a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>+b.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>);}
00078 <span class="keyword">friend</span> FXAPI FXVec2d operator-(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> FXVec2d(a.x-b.x,a.y-b.y);}
00079 <span class="comment"></span>
00080 <span class="comment"> /// Scaling</span>
<a name="l00081"></a><a class="code" href="classFX_1_1FXVec2d.html#n4">00081</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXVec2d operator*(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> FXVec2d(a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>*n,a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>*n);}
00082 <span class="keyword">friend</span> FXAPI FXVec2d operator*(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> FXVec2d(n*a.x,n*a.y);}
00083 <span class="keyword">friend</span> FXAPI FXVec2d operator/(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> FXVec2d(a.x/n,a.y/n);}
00084 <span class="keyword">friend</span> FXAPI FXVec2d operator/(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> FXVec2d(n/a.x,n/a.y);}
00085 <span class="comment"></span>
00086 <span class="comment"> /// Dot product</span>
<a name="l00087"></a><a class="code" href="classFX_1_1FXVec2d.html#n8">00087</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXdouble operator*(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>*b.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>+a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>*b.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>;}
00088 <span class="comment"></span>
00089 <span class="comment"> /// Test if zero</span>
<a name="l00090"></a><a class="code" href="classFX_1_1FXVec2d.html#n9">00090</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator!(<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>==0.0 && a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>==0.0;}
00091 <span class="comment"></span>
00092 <span class="comment"> /// Equality tests</span>
<a name="l00093"></a><a class="code" href="classFX_1_1FXVec2d.html#n10">00093</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator==(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>==b.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a> && a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>==b.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>;}
00094 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator!=(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.x!=b.x || a.y!=b.y;}
00095
00096 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator==(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> a.x==n && a.y==n;}
00097 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator!=(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> a.x!=n || a.y!=n;}
00098
00099 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator==(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> n==a.x && n==a.y;}
00100 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator!=(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> n!=a.x || n!=a.y;}
00101 <span class="comment"></span>
00102 <span class="comment"> /// Inequality tests</span>
<a name="l00103"></a><a class="code" href="classFX_1_1FXVec2d.html#n16">00103</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator<(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a><b.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a> && a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a><b.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>;}
00104 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator<=(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.x<=b.x && a.y<=b.y;}
00105 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator>(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.x>b.x && a.y>b.y;}
00106 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator>=(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> a.x>=b.x && a.y>=b.y;}
00107
00108 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator<(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> a.x<n && a.y<n;}
00109 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator<=(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> a.x<=n && a.y<=n;}
00110 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator>(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> a.x>n && a.y>n;}
00111 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator>=(<span class="keyword">const</span> FXVec2d& a,FXdouble n){<span class="keywordflow">return</span> a.x>=n && a.y>=n;}
00112
00113 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator<(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> n<a.x && n<a.y;}
00114 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator<=(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> n<=a.x && n<=a.y;}
00115 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator>(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> n>a.x && n>a.y;}
00116 <span class="keyword">friend</span> FXAPI <span class="keywordtype">int</span> operator>=(FXdouble n,<span class="keyword">const</span> FXVec2d& a){<span class="keywordflow">return</span> n>=a.x && n>=a.y;}
00117 <span class="comment"></span>
00118 <span class="comment"> /// Length and square of length</span>
<a name="l00119"></a><a class="code" href="classFX_1_1FXVec2d.html#n28">00119</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXdouble len2(<span class="keyword">const</span> FXVec2d& a){ <span class="keywordflow">return</span> a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>*a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>+a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>*a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>; }
00120 <span class="keyword">friend</span> FXAPI FXdouble len(<span class="keyword">const</span> FXVec2d& a){ <span class="keywordflow">return</span> sqrt(len2(a)); }
00121 <span class="comment"></span>
00122 <span class="comment"> /// Normalize vector</span>
00123 <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXVec2d normalize(<span class="keyword">const</span> FXVec2d& a);
00124 <span class="comment"></span>
00125 <span class="comment"> /// Lowest or highest components</span>
<a name="l00126"></a><a class="code" href="classFX_1_1FXVec2d.html#n31">00126</a> <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXVec2d lo(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> FXVec2d(FXMIN(a.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>,b.<a class="code" href="classFX_1_1FXVec2d.html#o0">x</a>),FXMIN(a.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>,b.<a class="code" href="classFX_1_1FXVec2d.html#o1">y</a>));}
00127 <span class="keyword">friend</span> FXAPI FXVec2d hi(<span class="keyword">const</span> FXVec2d& a,<span class="keyword">const</span> FXVec2d& b){<span class="keywordflow">return</span> FXVec2d(FXMAX(a.x,b.x),FXMAX(a.y,b.y));}
00128 <span class="comment"></span>
00129 <span class="comment"> /// Save vector to a stream</span>
00130 <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXStream& operator<<(FXStream& store,<span class="keyword">const</span> FXVec2d& v);
00131 <span class="comment"></span>
00132 <span class="comment"> /// Load vector from a stream</span>
00133 <span class="comment"></span> <span class="keyword">friend</span> FXAPI FXStream& operator>>(FXStream& store,FXVec2d& v);
00134 };
00135
00136 }
00137
00138 <span class="preprocessor">#endif</span>
</pre></div></font>
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