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<hr><h1>vector3.h</h1><div class="fragment"><pre>00001 <font class="comment">//</font>
00002 <font class="comment">// vector3.h</font>
00003 <font class="comment">//</font>
00004 <font class="comment">// Copyright (C) 1996 Limit Point Systems, Inc.</font>
00005 <font class="comment">//</font>
00006 <font class="comment">// Author: Curtis Janssen &lt;cljanss@limitpt.com&gt;</font>
00007 <font class="comment">// Maintainer: LPS</font>
00008 <font class="comment">//</font>
00009 <font class="comment">// This file is part of the SC Toolkit.</font>
00010 <font class="comment">//</font>
00011 <font class="comment">// The SC Toolkit is free software; you can redistribute it and/or modify</font>
00012 <font class="comment">// it under the terms of the GNU Library General Public License as published by</font>
00013 <font class="comment">// the Free Software Foundation; either version 2, or (at your option)</font>
00014 <font class="comment">// any later version.</font>
00015 <font class="comment">//</font>
00016 <font class="comment">// The SC Toolkit is distributed in the hope that it will be useful,</font>
00017 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00018 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</font>
00019 <font class="comment">// GNU Library General Public License for more details.</font>
00020 <font class="comment">//</font>
00021 <font class="comment">// You should have received a copy of the GNU Library General Public License</font>
00022 <font class="comment">// along with the SC Toolkit; see the file COPYING.LIB.  If not, write to</font>
00023 <font class="comment">// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.</font>
00024 <font class="comment">//</font>
00025 <font class="comment">// The U.S. Government is granted a limited license as per AL 91-7.</font>
00026 <font class="comment">//</font>
00027 
00028 <font class="preprocessor">#ifndef _math_scmat_vector3_h</font>
00029 <font class="preprocessor"></font><font class="preprocessor">#define _math_scmat_vector3_h</font>
00030 <font class="preprocessor"></font><font class="preprocessor">#ifdef __GNUC__</font>
00031 <font class="preprocessor"></font><font class="preprocessor">#pragma interface</font>
00032 <font class="preprocessor"></font><font class="preprocessor">#endif</font>
00033 <font class="preprocessor"></font>
00034 <font class="preprocessor">#include &lt;iostream&gt;</font>
00035 <font class="preprocessor">#include &lt;math.h&gt;</font>
00036 
00037 <font class="preprocessor">#include &lt;util/misc/exenv.h&gt;</font>
00038 <font class="preprocessor">#include &lt;util/keyval/keyval.h&gt;</font>
00039 
00040 <font class="keyword">namespace </font>sc {
00041 
00042 <font class="keyword">class </font>RefSCVector;
00043 <font class="keyword">class </font>SCMatrix3;
00044 
00045 <font class="keyword">class </font>SCVector3
00046 {
00047     <font class="keyword">friend</font> <font class="keyword">class </font>SCMatrix3;
00048   <font class="keyword">private</font>:
00049     <font class="keywordtype">double</font> _v[3];
00050   <font class="keyword">public</font>:
00051     SCVector3()<font class="keyword"> </font>{}
00052     SCVector3(<font class="keyword">const</font> <font class="keywordtype">double</font> p[3])<font class="keyword"> </font>{
00053         _v[0] = p[0]; _v[1] = p[1]; _v[2] = p[2];
00054       }
00055     SCVector3(<font class="keywordtype">double</font> d)<font class="keyword"> </font>{ _v[0] = d; _v[1] = d; _v[2] = d; }
00056     SCVector3(<font class="keywordtype">double</font> x,<font class="keywordtype">double</font> y,<font class="keywordtype">double</font> z)<font class="keyword"> </font>{
00057         _v[0] = x; _v[1] = y; _v[2] = z;
00058       }
00059     SCVector3(<font class="keyword">const</font> SCVector3&amp;p)<font class="keyword"> </font>{
00060         _v[0] = p._v[0]; _v[1] = p._v[1]; _v[2] = p._v[2];
00061       }
00062     SCVector3(<font class="keyword">const</font> RefSCVector&amp;);
00063     SCVector3(<font class="keyword">const</font> Ref&lt;KeyVal&gt;&amp;);
00064     <font class="keywordtype">void</font> normalize();
00065     SCVector3 operator -()<font class="keyword"> </font>{ <font class="keywordflow">return</font> SCVector3(-_v[0],-_v[1],-_v[2]); }
00066     SCVector3 operator*(<font class="keywordtype">double</font>) <font class="keyword">const</font>;
00067     <font class="keywordtype">void</font> operator = (<font class="keyword">const</font> <font class="keywordtype">double</font> *x)<font class="keyword"> </font>{
00068         _v[0] = x[0];
00069         _v[1] = x[1];
00070         _v[2] = x[2];
00071       }
00072     <font class="keywordtype">void</font> operator = (<font class="keyword">const</font> SCVector3&amp; x)<font class="keyword"> </font>{
00073         _v[0] = x._v[0];
00074         _v[1] = x._v[1];
00075         _v[2] = x._v[2];
00076       }
00077     <font class="keywordtype">void</font> operator = (<font class="keywordtype">double</font> d)<font class="keyword"> </font>{ _v[0] = d; _v[1] = d; _v[2] = d; }
00078     <font class="keywordtype">void</font> operator -= (<font class="keyword">const</font> SCVector3&amp; v)<font class="keyword"> </font>{
00079         _v[0] -= v._v[0];
00080         _v[1] -= v._v[1];
00081         _v[2] -= v._v[2];
00082       }
00083     <font class="keywordtype">void</font> operator += (<font class="keyword">const</font> SCVector3&amp; v)<font class="keyword"> </font>{
00084         _v[0] += v._v[0];
00085         _v[1] += v._v[1];
00086         _v[2] += v._v[2];
00087       }
00088     <font class="keywordtype">void</font> operator *= (<font class="keywordtype">double</font> m)<font class="keyword"> </font>{ _v[0] *= m; _v[1] *= m; _v[2] *= m; }
00089     SCVector3 operator+(<font class="keyword">const</font> SCVector3&amp;v)<font class="keyword"> const </font>{
00090         SCVector3 result;
00091         result._v[0] = _v[0] + v._v[0];
00092         result._v[1] = _v[1] + v._v[1];
00093         result._v[2] = _v[2] + v._v[2];
00094         <font class="keywordflow">return</font> result;
00095       }
00096     SCVector3 operator-(<font class="keyword">const</font> SCVector3&amp;v)<font class="keyword"> const </font>{
00097         SCVector3 result;
00098         result._v[0] = _v[0] - v._v[0];
00099         result._v[1] = _v[1] - v._v[1];
00100         result._v[2] = _v[2] - v._v[2];
00101         <font class="keywordflow">return</font> result;
00102       }
00103     <font class="keywordtype">double</font> dot(<font class="keyword">const</font> SCVector3&amp;v)<font class="keyword"> const </font>{
00104         <font class="keywordflow">return</font> _v[0]*v._v[0] + _v[1]*v._v[1] + _v[2]*v._v[2]; }
00105     SCVector3 cross(<font class="keyword">const</font> SCVector3&amp;) <font class="keyword">const</font>;
00106     <font class="comment">// returns a unit vector that is perpendicular to the two vectors</font>
00107     SCVector3 perp_unit(<font class="keyword">const</font> SCVector3&amp;) <font class="keyword">const</font>;
00108     <font class="keywordtype">void</font> spherical_coord(<font class="keywordtype">double</font> theta, <font class="keywordtype">double</font> phi, 
00109                          <font class="keywordtype">double</font> r);
00110     <font class="keywordtype">void</font> spherical_to_cartesian(SCVector3&amp;cart) <font class="keyword">const</font>;
00111     <font class="keywordtype">double</font> maxabs() <font class="keyword">const</font>;
00112     <font class="comment">// this returns the length of the difference vector</font>
00113     <font class="keywordtype">double</font> dist(<font class="keyword">const</font> SCVector3&amp;) <font class="keyword">const</font>;
00114     <font class="keywordtype">void</font> rotate(<font class="keywordtype">double</font> theta,SCVector3 &amp;v);
00115     <font class="keywordtype">double</font> norm()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> sqrt(this-&gt;dot(*<font class="keyword">this</font>)); }
00116     <font class="keywordtype">double</font>&amp; elem(<font class="keywordtype">int</font> xyz)<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[xyz]; }
00117     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; elem(<font class="keywordtype">int</font> xyz)<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[xyz]; }
00118     <font class="keywordtype">double</font>&amp; operator [] (<font class="keywordtype">int</font> i)<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[i]; }
00119     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; operator [] (<font class="keywordtype">int</font> i)<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[i]; }
00120     <font class="keywordtype">double</font>&amp; operator () (<font class="keywordtype">int</font> i)<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[i]; }
00121     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; operator () (<font class="keywordtype">int</font> i)<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[i]; }
00122     <font class="keyword">const</font> <font class="keywordtype">double</font>* data()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v; }
00123     <font class="keywordtype">double</font>* data()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v; }
00124     <font class="keywordtype">double</font>&amp; x()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[0]; }
00125     <font class="keywordtype">double</font>&amp; y()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[1]; }
00126     <font class="keywordtype">double</font>&amp; z()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[2]; }
00127     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; x()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[0]; }
00128     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; y()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[1]; }
00129     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; z()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[2]; }
00130     <font class="keywordtype">double</font>&amp; r()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[0]; }
00131     <font class="keywordtype">double</font>&amp; theta()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[1]; }
00132     <font class="keywordtype">double</font>&amp; phi()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _v[2]; }
00133     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; r()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[0]; }
00134     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; theta()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[1]; }
00135     <font class="keyword">const</font> <font class="keywordtype">double</font>&amp; phi()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _v[2]; }
00136     <font class="keywordtype">void</font> print(std::ostream&amp; =ExEnv::out0()) <font class="keyword">const</font>;
00137 };
00138 SCVector3 operator*(<font class="keywordtype">double</font>,<font class="keyword">const</font> SCVector3&amp;);
00139 std::ostream &amp;operator&lt;&lt;(std::ostream&amp;, <font class="keyword">const</font> SCVector3 &amp;);
00140 
00141 }
00142 
00143 <font class="preprocessor">#ifdef INLINE_FUNCTIONS</font>
00144 <font class="preprocessor"></font><font class="preprocessor">#include &lt;math/scmat/vector3_i.h&gt;</font>
00145 <font class="preprocessor">#endif</font>
00146 <font class="preprocessor"></font>
00147 <font class="preprocessor">#endif</font>
00148 <font class="preprocessor"></font>
00149 <font class="comment">// Local Variables:</font>
00150 <font class="comment">// mode: c++</font>
00151 <font class="comment">// c-file-style: "CLJ"</font>
00152 <font class="comment">// End:</font>
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