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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>maths/vector3.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.4 --><div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a></div><div class="nav"><a class="el" href="dir_000004.html">maths</a></div><h1>vector3.cpp</h1><a href="vector3_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="common_8h.html">common.h</a>"</span><a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="vector3_8h.html">vector3.h</a>"</span><a name="l00027"></a>00027 <a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="comment">/*</span><a name="l00030"></a>00030 <span class="comment">Members or class Vector3</span><a name="l00031"></a>00031 <span class="comment">*/</span><a name="l00032"></a>00032 <a name="l00033"></a>00033 <a name="l00034"></a><a class="code" href="classVector3.html#a2">00034</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a> <a class="code" href="classVector3.html#a2">Vector3::operator - </a>()<span class="keyword"> const</span><a name="l00035"></a>00035 <span class="keyword"> </span>{<a name="l00036"></a>00036 <span class="keywordflow">return</span> <a class="code" href="classVector3.html#a0">Vector3</a>(-<a class="code" href="classVector3.html#o0">X</a>,-<a class="code" href="classVector3.html#o1">Y</a>,-<a class="code" href="classVector3.html#o2">Z</a>);<a name="l00037"></a>00037 }<a name="l00038"></a>00038 <a name="l00039"></a>00039 <a name="l00040"></a><a class="code" href="classVector3.html#a3">00040</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a> <a class="code" href="classVector3.html#a3">Vector3::operator + </a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<span class="keyword"> const</span><a name="l00041"></a>00041 <span class="keyword"> </span>{<a name="l00042"></a>00042 <span class="keywordflow">return</span> <a class="code" href="classVector3.html#a0">Vector3</a>(<a class="code" href="classVector3.html#o0">X</a>+vector.<a class="code" href="classVector3.html#o0">X</a>,<a class="code" href="classVector3.html#o1">Y</a>+vector.<a class="code" href="classVector3.html#o1">Y</a>,<a class="code" href="classVector3.html#o2">Z</a>+vector.<a class="code" href="classVector3.html#o2">Z</a>);<a name="l00043"></a>00043 }<a name="l00044"></a>00044 <a name="l00045"></a>00045 <a name="l00046"></a><a class="code" href="classVector3.html#a4">00046</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a> <a class="code" href="classVector3.html#a2">Vector3::operator - </a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<span class="keyword"> const</span><a name="l00047"></a>00047 <span class="keyword"> </span>{<a name="l00048"></a>00048 <span class="keywordflow">return</span> <a class="code" href="classVector3.html#a0">Vector3</a>(<a class="code" href="classVector3.html#o0">X</a>-vector.<a class="code" href="classVector3.html#o0">X</a>,<a class="code" href="classVector3.html#o1">Y</a>-vector.<a class="code" href="classVector3.html#o1">Y</a>,<a class="code" href="classVector3.html#o2">Z</a>-vector.<a class="code" href="classVector3.html#o2">Z</a>);<a name="l00049"></a>00049 }<a name="l00050"></a>00050 <a name="l00051"></a>00051 <a name="l00052"></a><a class="code" href="classVector3.html#a5">00052</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a> <a class="code" href="classVector3.html#a5">Vector3::operator * </a>(<a class="code" href="group__fix.html#ga0">fix</a> scalar)<span class="keyword"> const</span><a name="l00053"></a>00053 <span class="keyword"> </span>{<a name="l00054"></a>00054 <span class="keywordflow">return</span> <a class="code" href="classVector3.html#a0">Vector3</a>(<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o0">X</a>,scalar),<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o1">Y</a>,scalar),<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o2">Z</a>,scalar));<a name="l00055"></a>00055 }<a name="l00056"></a>00056 <a name="l00057"></a>00057 <a name="l00058"></a><a class="code" href="classVector3.html#a6">00058</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a> <a class="code" href="classVector3.html#a6">Vector3::operator / </a>(<a class="code" href="group__fix.html#ga0">fix</a> scalar)<span class="keyword"> const</span><a name="l00059"></a>00059 <span class="keyword"> </span>{<a name="l00060"></a>00060 <span class="keywordflow">return</span> <a class="code" href="classVector3.html#a0">Vector3</a>(<a class="code" href="classFix.html#e4">Fix::Div</a>(<a class="code" href="classVector3.html#o0">X</a>,scalar),<a class="code" href="classFix.html#e4">Fix::Div</a>(<a class="code" href="classVector3.html#o1">Y</a>,scalar),<a class="code" href="classFix.html#e4">Fix::Div</a>(<a class="code" href="classVector3.html#o2">Z</a>,scalar));<a name="l00061"></a>00061 }<a name="l00062"></a>00062 <a name="l00063"></a>00063 <a name="l00064"></a><a class="code" href="classVector3.html#a7">00064</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a>& <a class="code" href="classVector3.html#a7">Vector3::operator += </a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<a name="l00065"></a>00065 {<a name="l00066"></a>00066 <a class="code" href="classVector3.html#o0">X</a> += vector.<a class="code" href="classVector3.html#o0">X</a>;<a name="l00067"></a>00067 <a class="code" href="classVector3.html#o1">Y</a> += vector.<a class="code" href="classVector3.html#o1">Y</a>;<a name="l00068"></a>00068 <a class="code" href="classVector3.html#o2">Z</a> += vector.<a class="code" href="classVector3.html#o2">Z</a>;<a name="l00069"></a>00069 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <a name="l00072"></a>00072 <a name="l00073"></a><a class="code" href="classVector3.html#a8">00073</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a>& <a class="code" href="classVector3.html#a8">Vector3::operator -= </a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<a name="l00074"></a>00074 {<a name="l00075"></a>00075 <a class="code" href="classVector3.html#o0">X</a> -= vector.<a class="code" href="classVector3.html#o0">X</a>;<a name="l00076"></a>00076 <a class="code" href="classVector3.html#o1">Y</a> -= vector.<a class="code" href="classVector3.html#o1">Y</a>;<a name="l00077"></a>00077 <a class="code" href="classVector3.html#o2">Z</a> -= vector.<a class="code" href="classVector3.html#o2">Z</a>;<a name="l00078"></a>00078 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00079"></a>00079 }<a name="l00080"></a>00080 <a name="l00081"></a>00081 <a name="l00082"></a><a class="code" href="classVector3.html#a9">00082</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a>& <a class="code" href="classVector3.html#a9">Vector3::operator *= </a>(<a class="code" href="group__fix.html#ga0">fix</a> scalar)<a name="l00083"></a>00083 {<a name="l00084"></a>00084 <a class="code" href="classVector3.html#o0">X</a> = <a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o0">X</a>,scalar);<a name="l00085"></a>00085 <a class="code" href="classVector3.html#o1">Y</a> = <a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o1">Y</a>,scalar);<a name="l00086"></a>00086 <a class="code" href="classVector3.html#o2">Z</a> = <a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o2">Z</a>,scalar);<a name="l00087"></a>00087 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00088"></a>00088 }<a name="l00089"></a>00089 <a name="l00090"></a>00090 <a name="l00091"></a><a class="code" href="classVector3.html#a10">00091</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a>& <a class="code" href="classVector3.html#a10">Vector3::operator /= </a>(<a class="code" href="group__fix.html#ga0">fix</a> scalar)<a name="l00092"></a>00092 {<a name="l00093"></a>00093 <a class="code" href="classVector3.html#o0">X</a> = <a class="code" href="classFix.html#e4">Fix::Div</a>(<a class="code" href="classVector3.html#o0">X</a>,scalar);<a name="l00094"></a>00094 <a class="code" href="classVector3.html#o1">Y</a> = <a class="code" href="classFix.html#e4">Fix::Div</a>(<a class="code" href="classVector3.html#o1">Y</a>,scalar);<a name="l00095"></a>00095 <a class="code" href="classVector3.html#o2">Z</a> = <a class="code" href="classFix.html#e4">Fix::Div</a>(<a class="code" href="classVector3.html#o2">Z</a>,scalar);<a name="l00096"></a>00096 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00097"></a>00097 }<a name="l00098"></a>00098 <a name="l00099"></a>00099 <a name="l00100"></a><a class="code" href="classVector3.html#a11">00100</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <span class="keywordtype">bool</span> <a class="code" href="classVector3.html#a11">Vector3::operator == </a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<span class="keyword"> const</span><a name="l00101"></a>00101 <span class="keyword"> </span>{<a name="l00102"></a>00102 <span class="keywordflow">return</span> (<a class="code" href="classVector3.html#o0">X</a>==vector.<a class="code" href="classVector3.html#o0">X</a> && <a class="code" href="classVector3.html#o1">Y</a>==vector.<a class="code" href="classVector3.html#o1">Y</a> && <a class="code" href="classVector3.html#o2">Z</a>==vector.<a class="code" href="classVector3.html#o2">Z</a>);<a name="l00103"></a>00103 }<a name="l00104"></a>00104 <a name="l00105"></a>00105 <a name="l00106"></a><a class="code" href="classVector3.html#a13">00106</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="group__fix.html#ga0">fix</a> <a class="code" href="classVector3.html#a13">Vector3::DotProduct</a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<span class="keyword"> const</span><a name="l00107"></a>00107 <span class="keyword"> </span>{<a name="l00108"></a>00108 <span class="keywordflow">return</span> <a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o0">X</a>,vector.<a class="code" href="classVector3.html#o0">X</a>)+<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o1">Y</a>,vector.<a class="code" href="classVector3.html#o1">Y</a>)+<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o2">Z</a>,vector.<a class="code" href="classVector3.html#o2">Z</a>);<a name="l00109"></a>00109 }<a name="l00110"></a>00110 <a name="l00111"></a>00111 <a name="l00112"></a><a class="code" href="classVector3.html#a14">00112</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="classVector3.html">Vector3</a> <a class="code" href="classVector3.html#a14">Vector3::CrossProduct</a>(<span class="keyword">const</span> <a class="code" href="classVector3.html">Vector3</a>& vector)<span class="keyword"> const</span><a name="l00113"></a>00113 <span class="keyword"> </span>{<a name="l00114"></a>00114 <span class="keywordflow">return</span> <a class="code" href="classVector3.html#a0">Vector3</a>(<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o1">Y</a>,vector.<a class="code" href="classVector3.html#o2">Z</a>)-<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o2">Z</a>,vector.<a class="code" href="classVector3.html#o1">Y</a>),<a name="l00115"></a>00115 <a class="code" href="classFix.html#e3">Fix::MulNS</a>(Z,vector.<a class="code" href="classVector3.html#o0">X</a>)-<a class="code" href="classFix.html#e3">Fix::MulNS</a>(<a class="code" href="classVector3.html#o0">X</a>,vector.<a class="code" href="classVector3.html#o2">Z</a>),<a name="l00116"></a>00116 <a class="code" href="classFix.html#e3">Fix::MulNS</a>(X,vector.<a class="code" href="classVector3.html#o1">Y</a>)-<a class="code" href="classFix.html#e3">Fix::MulNS</a>(Y,vector.<a class="code" href="classVector3.html#o0">X</a>));<a name="l00117"></a>00117 }<a name="l00118"></a>00118 <a name="l00119"></a>00119 <a name="l00120"></a><a class="code" href="vector3_8cpp.html#a0">00120</a> <span class="keyword">static</span> <a class="code" href="group__integers.html#ga6">uint</a> <a class="code" href="vector3_8cpp.html#a0">MostSignificantBit</a>(<a class="code" href="group__integers.html#ga2">uint32</a> a)<a name="l00121"></a>00121 {<a name="l00122"></a>00122 <a class="code" href="group__integers.html#ga6">uint</a> b = 0;<a name="l00123"></a>00123 <span class="keywordflow">if</span>(a>=(1<<16)) b |= 16, a >>= 16;<a name="l00124"></a>00124 <span class="keywordflow">if</span>(a>=(1<<8)) b |= 8, a >>= 8;<a name="l00125"></a>00125 <span class="keywordflow">if</span>(a>=(1<<4)) b |= 4, a >>= 4;<a name="l00126"></a>00126 <span class="keywordflow">if</span>(a>=(1<<2)) b |= 2, a >>= 2;<a name="l00127"></a>00127 b |= a>>1;<a name="l00128"></a>00128 <span class="keywordflow">return</span> b;<a name="l00129"></a>00129 }<a name="l00130"></a>00130 <a name="l00131"></a>00131 <a name="l00132"></a><a class="code" href="classVector3.html#a15">00132</a> <a class="code" href="common_8h.html#a2">EXPORT</a> <a class="code" href="group__fix.html#ga1">ufix</a> <a class="code" href="classVector3.html#a15">Vector3::Length</a>()<span class="keyword"> const</span><a name="l00133"></a>00133 <span class="keyword"> </span>{<a name="l00134"></a>00134 <span class="comment">// calculate square of the length</span><a name="l00135"></a>00135 <a class="code" href="group__integers.html#ga6">uint</a> f;<a name="l00136"></a>00136 <a class="code" href="group__integers.html#ga6">uint</a> i = <a class="code" href="classVector3.html#a18">LengthSquared</a>(f);<a name="l00137"></a>00137 <a name="l00138"></a>00138 <span class="comment">// if no integer part, return the square root</span><a name="l00139"></a>00139 <span class="keywordflow">if</span>(!i)<a name="l00140"></a>00140 <span class="keywordflow">return</span> <a class="code" href="classFix.html#e5">Fix::Sqrt</a>(f)>>8;<a name="l00141"></a>00141 <a name="l00142"></a>00142 <span class="comment">// shift square of result so it fits into 32 bits</span><a name="l00143"></a>00143 <span class="keywordtype">int</span> shift = (2+<a class="code" href="vector3_8cpp.html#a0">MostSignificantBit</a>(i))&~1;<a name="l00144"></a>00144 <a class="code" href="group__fix.html#ga1">ufix</a> s;<a name="l00145"></a>00145 <span class="keywordflow">if</span>(shift==32)<a name="l00146"></a>00146 s = i;<a name="l00147"></a>00147 <span class="keywordflow">else</span><a name="l00148"></a>00148 {<a name="l00149"></a>00149 s = f>>shift;<a name="l00150"></a>00150 s |= i<<(32-shift);<a name="l00151"></a>00151 }<a name="l00152"></a>00152 <a name="l00153"></a>00153 <span class="comment">// take the square root</span><a name="l00154"></a>00154 <a class="code" href="group__fix.html#ga1">ufix</a> r = <a class="code" href="classFix.html#e5">Fix::Sqrt</a>(s);<a name="l00155"></a>00155 <a name="l00156"></a>00156 <span class="comment">// shift result to get binary point in the correct place</span>⌨️ 快捷键说明
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