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<h1>vector3.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
<a name="l00002"></a>00002 <span class="comment">// vector3.h</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 1996 Limit Point Systems, Inc.</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// Author: Curtis Janssen &lt;cljanss@limitpt.com&gt;</span>
<a name="l00007"></a>00007 <span class="comment">// Maintainer: LPS</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// This file is part of the SC Toolkit.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// The SC Toolkit is free software; you can redistribute it and/or modify</span>
<a name="l00012"></a>00012 <span class="comment">// it under the terms of the GNU Library General Public License as published by</span>
<a name="l00013"></a>00013 <span class="comment">// the Free Software Foundation; either version 2, or (at your option)</span>
<a name="l00014"></a>00014 <span class="comment">// any later version.</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016 <span class="comment">// The SC Toolkit is distributed in the hope that it will be useful,</span>
<a name="l00017"></a>00017 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00018"></a>00018 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00019"></a>00019 <span class="comment">// GNU Library General Public License for more details.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021 <span class="comment">// You should have received a copy of the GNU Library General Public License</span>
<a name="l00022"></a>00022 <span class="comment">// along with the SC Toolkit; see the file COPYING.LIB.  If not, write to</span>
<a name="l00023"></a>00023 <span class="comment">// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00024"></a>00024 <span class="comment">//</span>
<a name="l00025"></a>00025 <span class="comment">// The U.S. Government is granted a limited license as per AL 91-7.</span>
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="preprocessor">#ifndef _math_scmat_vector3_h</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define _math_scmat_vector3_h</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#ifdef __GNUC__</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#pragma interface</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include &lt;iostream&gt;</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include &lt;math.h&gt;</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="preprocessor">#include &lt;util/misc/exenv.h&gt;</span>
<a name="l00038"></a>00038 <span class="preprocessor">#include &lt;util/keyval/keyval.h&gt;</span>
<a name="l00039"></a>00039 
<a name="l00040"></a>00040 <span class="keyword">namespace </span>sc {
<a name="l00041"></a>00041 
<a name="l00042"></a>00042 <span class="keyword">class </span>RefSCVector;
<a name="l00043"></a>00043 <span class="keyword">class </span>SCMatrix3;
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 <span class="keyword">class </span>SCVector3
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047     <span class="keyword">friend</span> <span class="keyword">class </span>SCMatrix3;
<a name="l00048"></a>00048   <span class="keyword">private</span>:
<a name="l00049"></a>00049     <span class="keywordtype">double</span> _v[3];
<a name="l00050"></a>00050   <span class="keyword">public</span>:
<a name="l00051"></a>00051     SCVector3() {}
<a name="l00052"></a>00052     SCVector3(<span class="keyword">const</span> <span class="keywordtype">double</span> p[3]) {
<a name="l00053"></a>00053         _v[0] = p[0]; _v[1] = p[1]; _v[2] = p[2];
<a name="l00054"></a>00054       }
<a name="l00055"></a>00055     SCVector3(<span class="keywordtype">double</span> d) { _v[0] = d; _v[1] = d; _v[2] = d; }
<a name="l00056"></a>00056     SCVector3(<span class="keywordtype">double</span> x,<span class="keywordtype">double</span> y,<span class="keywordtype">double</span> z) {
<a name="l00057"></a>00057         _v[0] = x; _v[1] = y; _v[2] = z;
<a name="l00058"></a>00058       }
<a name="l00059"></a>00059     SCVector3(<span class="keyword">const</span> SCVector3&amp;p) {
<a name="l00060"></a>00060         _v[0] = p._v[0]; _v[1] = p._v[1]; _v[2] = p._v[2];
<a name="l00061"></a>00061       }
<a name="l00062"></a>00062     SCVector3(<span class="keyword">const</span> RefSCVector&amp;);
<a name="l00063"></a>00063     SCVector3(<span class="keyword">const</span> Ref&lt;KeyVal&gt;&amp;);
<a name="l00064"></a>00064     <span class="keywordtype">void</span> normalize();
<a name="l00065"></a>00065     SCVector3 operator -() { <span class="keywordflow">return</span> SCVector3(-_v[0],-_v[1],-_v[2]); }
<a name="l00066"></a>00066     SCVector3 operator*(<span class="keywordtype">double</span>) <span class="keyword">const</span>;
<a name="l00067"></a>00067     <span class="keywordtype">void</span> operator = (<span class="keyword">const</span> <span class="keywordtype">double</span> *x) {
<a name="l00068"></a>00068         _v[0] = x[0];
<a name="l00069"></a>00069         _v[1] = x[1];
<a name="l00070"></a>00070         _v[2] = x[2];
<a name="l00071"></a>00071       }
<a name="l00072"></a>00072     <span class="keywordtype">void</span> operator = (<span class="keyword">const</span> SCVector3&amp; x) {
<a name="l00073"></a>00073         _v[0] = x._v[0];
<a name="l00074"></a>00074         _v[1] = x._v[1];
<a name="l00075"></a>00075         _v[2] = x._v[2];
<a name="l00076"></a>00076       }
<a name="l00077"></a>00077     <span class="keywordtype">void</span> operator = (<span class="keywordtype">double</span> d) { _v[0] = d; _v[1] = d; _v[2] = d; }
<a name="l00078"></a>00078     <span class="keywordtype">void</span> operator -= (<span class="keyword">const</span> SCVector3&amp; v) {
<a name="l00079"></a>00079         _v[0] -= v._v[0];
<a name="l00080"></a>00080         _v[1] -= v._v[1];
<a name="l00081"></a>00081         _v[2] -= v._v[2];
<a name="l00082"></a>00082       }
<a name="l00083"></a>00083     <span class="keywordtype">void</span> operator += (<span class="keyword">const</span> SCVector3&amp; v) {
<a name="l00084"></a>00084         _v[0] += v._v[0];
<a name="l00085"></a>00085         _v[1] += v._v[1];
<a name="l00086"></a>00086         _v[2] += v._v[2];
<a name="l00087"></a>00087       }
<a name="l00088"></a>00088     <span class="keywordtype">void</span> operator *= (<span class="keywordtype">double</span> m) { _v[0] *= m; _v[1] *= m; _v[2] *= m; }
<a name="l00089"></a>00089     SCVector3 operator+(<span class="keyword">const</span> SCVector3&amp;v)<span class="keyword"> const </span>{
<a name="l00090"></a>00090         SCVector3 result;
<a name="l00091"></a>00091         result._v[0] = _v[0] + v._v[0];
<a name="l00092"></a>00092         result._v[1] = _v[1] + v._v[1];
<a name="l00093"></a>00093         result._v[2] = _v[2] + v._v[2];
<a name="l00094"></a>00094         <span class="keywordflow">return</span> result;
<a name="l00095"></a>00095       }
<a name="l00096"></a>00096     SCVector3 operator-(<span class="keyword">const</span> SCVector3&amp;v)<span class="keyword"> const </span>{
<a name="l00097"></a>00097         SCVector3 result;
<a name="l00098"></a>00098         result._v[0] = _v[0] - v._v[0];
<a name="l00099"></a>00099         result._v[1] = _v[1] - v._v[1];
<a name="l00100"></a>00100         result._v[2] = _v[2] - v._v[2];
<a name="l00101"></a>00101         <span class="keywordflow">return</span> result;
<a name="l00102"></a>00102       }
<a name="l00103"></a>00103     <span class="keywordtype">double</span> dot(<span class="keyword">const</span> SCVector3&amp;v)<span class="keyword"> const </span>{
<a name="l00104"></a>00104         <span class="keywordflow">return</span> _v[0]*v._v[0] + _v[1]*v._v[1] + _v[2]*v._v[2]; }
<a name="l00105"></a>00105     SCVector3 cross(<span class="keyword">const</span> SCVector3&amp;) <span class="keyword">const</span>;
<a name="l00106"></a>00106     <span class="comment">// returns a unit vector that is perpendicular to the two vectors</span>
<a name="l00107"></a>00107     SCVector3 perp_unit(<span class="keyword">const</span> SCVector3&amp;) <span class="keyword">const</span>;
<a name="l00108"></a>00108     <span class="keywordtype">void</span> spherical_coord(<span class="keywordtype">double</span> theta, <span class="keywordtype">double</span> phi, 
<a name="l00109"></a>00109                          <span class="keywordtype">double</span> r);
<a name="l00110"></a>00110     <span class="keywordtype">void</span> spherical_to_cartesian(SCVector3&amp;cart) <span class="keyword">const</span>;
<a name="l00111"></a>00111     <span class="keywordtype">double</span> maxabs() <span class="keyword">const</span>;
<a name="l00112"></a>00112     <span class="comment">// this returns the length of the difference vector</span>
<a name="l00113"></a>00113     <span class="keywordtype">double</span> dist(<span class="keyword">const</span> SCVector3&amp;) <span class="keyword">const</span>;
<a name="l00114"></a>00114     <span class="keywordtype">void</span> rotate(<span class="keywordtype">double</span> theta,SCVector3 &amp;v);
<a name="l00115"></a>00115     <span class="keywordtype">double</span> norm()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> sqrt(this-&gt;dot(*<span class="keyword">this</span>)); }
<a name="l00116"></a>00116     <span class="keywordtype">double</span>&amp; elem(<span class="keywordtype">int</span> xyz) { <span class="keywordflow">return</span> _v[xyz]; }
<a name="l00117"></a>00117     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; elem(<span class="keywordtype">int</span> xyz)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[xyz]; }
<a name="l00118"></a>00118     <span class="keywordtype">double</span>&amp; operator [] (<span class="keywordtype">int</span> i) { <span class="keywordflow">return</span> _v[i]; }
<a name="l00119"></a>00119     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; operator [] (<span class="keywordtype">int</span> i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[i]; }
<a name="l00120"></a>00120     <span class="keywordtype">double</span>&amp; operator () (<span class="keywordtype">int</span> i) { <span class="keywordflow">return</span> _v[i]; }
<a name="l00121"></a>00121     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; operator () (<span class="keywordtype">int</span> i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[i]; }
<a name="l00122"></a>00122     <span class="keyword">const</span> <span class="keywordtype">double</span>* data()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v; }
<a name="l00123"></a>00123     <span class="keywordtype">double</span>* data() { <span class="keywordflow">return</span> _v; }
<a name="l00124"></a>00124     <span class="keywordtype">double</span>&amp; x() { <span class="keywordflow">return</span> _v[0]; }
<a name="l00125"></a>00125     <span class="keywordtype">double</span>&amp; y() { <span class="keywordflow">return</span> _v[1]; }
<a name="l00126"></a>00126     <span class="keywordtype">double</span>&amp; z() { <span class="keywordflow">return</span> _v[2]; }
<a name="l00127"></a>00127     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; x()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[0]; }
<a name="l00128"></a>00128     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; y()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[1]; }
<a name="l00129"></a>00129     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; z()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[2]; }
<a name="l00130"></a>00130     <span class="keywordtype">double</span>&amp; r() { <span class="keywordflow">return</span> _v[0]; }
<a name="l00131"></a>00131     <span class="keywordtype">double</span>&amp; theta() { <span class="keywordflow">return</span> _v[1]; }
<a name="l00132"></a>00132     <span class="keywordtype">double</span>&amp; phi() { <span class="keywordflow">return</span> _v[2]; }
<a name="l00133"></a>00133     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; r()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[0]; }
<a name="l00134"></a>00134     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; theta()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[1]; }
<a name="l00135"></a>00135     <span class="keyword">const</span> <span class="keywordtype">double</span>&amp; phi()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _v[2]; }
<a name="l00136"></a>00136     <span class="keywordtype">void</span> print(std::ostream&amp; =<a class="code" href="classsc_1_1ExEnv.html#360216acd1f990e999c0ed46cb350b1f" title="Return an ostream that writes from node 0.">ExEnv::out0</a>()) <span class="keyword">const</span>;
<a name="l00137"></a>00137 };
<a name="l00138"></a>00138 SCVector3 operator*(<span class="keywordtype">double</span>,<span class="keyword">const</span> SCVector3&amp;);
<a name="l00139"></a>00139 std::ostream &amp;operator&lt;&lt;(std::ostream&amp;, <span class="keyword">const</span> SCVector3 &amp;);
<a name="l00140"></a>00140 
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 
<a name="l00143"></a>00143 <span class="preprocessor">#ifdef INLINE_FUNCTIONS</span>
<a name="l00144"></a>00144 <span class="preprocessor"></span><span class="preprocessor">#include &lt;math/scmat/vector3_i.h&gt;</span>
<a name="l00145"></a>00145 <span class="preprocessor">#endif</span>
<a name="l00146"></a>00146 <span class="preprocessor"></span>
<a name="l00147"></a>00147 <span class="preprocessor">#endif</span>
<a name="l00148"></a>00148 <span class="preprocessor"></span>
<a name="l00149"></a>00149 <span class="comment">// Local Variables:</span>
<a name="l00150"></a>00150 <span class="comment">// mode: c++</span>
<a name="l00151"></a>00151 <span class="comment">// c-file-style: "CLJ"</span>
<a name="l00152"></a>00152 <span class="comment">// End:</span>
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