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< a href = "vector2_8h.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < pre class = "fragment" > < a name = "l00001" > < / a > 00001 < span class = "comment" > // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: t -*-< / span >
< a name = "l00002" > < / a > 00002
< a name = "l00003" > < / a > 00003 < span class = "comment" > // Copyright 2010 Michael Smith, all rights reserved.< / span >
< a name = "l00004" > < / a > 00004
< a name = "l00005" > < / a > 00005 < span class = "comment" > // This library is free software; you can redistribute it and / or< / span >
< a name = "l00006" > < / a > 00006 < span class = "comment" > // modify it under the terms of the GNU Lesser General Public< / span >
< a name = "l00007" > < / a > 00007 < span class = "comment" > // License as published by the Free Software Foundation; either< / span >
< a name = "l00008" > < / a > 00008 < span class = "comment" > // version 2.1 of the License, or (at your option) any later version.< / span >
< a name = "l00009" > < / a > 00009
< a name = "l00010" > < / a > 00010 < span class = "comment" > // Derived closely from:< / span >
< a name = "l00011" > < / a > 00011 < span class = "comment" > /****************************************< / span >
< a name = "l00012" > < / a > 00012 < span class = "comment" > * 2D Vector Classes< / span >
< a name = "l00013" > < / a > 00013 < span class = "comment" > * By Bill Perone (billperone@yahoo.com)< / span >
< a name = "l00014" > < / a > 00014 < span class = "comment" > * Original: 9-16-2002< / span >
< a name = "l00015" > < / a > 00015 < span class = "comment" > * Revised: 19-11-2003< / span >
< a name = "l00016" > < / a > 00016 < span class = "comment" > * 18-12-2003< / span >
< a name = "l00017" > < / a > 00017 < span class = "comment" > * 06-06-2004< / span >
< a name = "l00018" > < / a > 00018 < span class = "comment" > *< / span >
< a name = "l00019" > < / a > 00019 < span class = "comment" > * <20> 2003, This code is provided " as is" and you can use it freely as long as< / span >
< a name = "l00020" > < / a > 00020 < span class = "comment" > * credit is given to Bill Perone in the application it is used in< / span >
< a name = "l00021" > < / a > 00021 < span class = "comment" > ****************************************/< / span >
< a name = "l00022" > < / a > 00022
< a name = "l00023" > < / a > 00023 < span class = "preprocessor" > #ifndef VECTOR2_H< / span >
< a name = "l00024" > < / a > 00024 < span class = "preprocessor" > < / span > < span class = "preprocessor" > #define VECTOR2_H< / span >
< a name = "l00025" > < / a > 00025 < span class = "preprocessor" > < / span >
< a name = "l00026" > < / a > 00026 < span class = "preprocessor" > #include < math.h> < / span >
< a name = "l00027" > < / a > 00027
< a name = "l00028" > < / a > 00028 < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > T>
< a name = "l00029" > < / a > < a class = "code" href = "struct_vector2.html" > 00029< / a > < span class = "keyword" > struct < / span > < a class = "code" href = "struct_vector2.html" > Vector2< / a >
< a name = "l00030" > < / a > 00030 {
< a name = "l00031" > < / a > < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > 00031< / a > T < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > , < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ;
< a name = "l00032" > < / a > 00032
< a name = "l00033" > < / a > 00033 < span class = "comment" > // trivial ctor< / span >
< a name = "l00034" > < / a > 00034 < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > () {memset(< span class = "keyword" > this< / span > , 0, < span class = "keyword" > sizeof< / span > (*< span class = "keyword" > this< / span > ));}
< a name = "l00035" > < / a > 00035
< a name = "l00036" > < / a > 00036 < span class = "comment" > // setting ctor< / span >
< a name = "l00037" > < / a > 00037 < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > (< span class = "keyword" > const< / span > T x0, < span class = "keyword" > const< / span > T y0): < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > (x0), < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > (y0) {}
< a name = "l00038" > < / a > 00038
< a name = "l00039" > < / a > 00039 < span class = "comment" > // function call operator< / span >
< a name = "l00040" > < / a > < a class = "code" href = "struct_vector2.html#af58fdb320b592f2a623f767b96f82171" > 00040< / a > < span class = "keywordtype" > void< / span > < a class = "code" href = "struct_vector2.html#af58fdb320b592f2a623f767b96f82171" > operator ()< / a > (< span class = "keyword" > const< / span > T x0, < span class = "keyword" > const< / span > T y0)
< a name = "l00041" > < / a > 00041 { < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > = x0; < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > = y0; }
< a name = "l00042" > < / a > 00042
< a name = "l00043" > < / a > 00043 < span class = "comment" > // test for equality< / span >
< a name = "l00044" > < / a > < a class = "code" href = "struct_vector2.html#a90ace29e191da2edd698fe157c97c1cb" > 00044< / a > < span class = "keywordtype" > bool< / span > < a class = "code" href = "struct_vector2.html#a90ace29e191da2edd698fe157c97c1cb" > operator==< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)
< a name = "l00045" > < / a > 00045 { < span class = "keywordflow" > return< / span > (< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > ==v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > & & < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ==v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ); }
< a name = "l00046" > < / a > 00046
< a name = "l00047" > < / a > 00047 < span class = "comment" > // test for inequality< / span >
< a name = "l00048" > < / a > < a class = "code" href = "struct_vector2.html#aae7409be71fdf2f2680850c5d1075c59" > 00048< / a > < span class = "keywordtype" > bool< / span > < a class = "code" href = "struct_vector2.html#aae7409be71fdf2f2680850c5d1075c59" > operator!=< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)
< a name = "l00049" > < / a > 00049 { < span class = "keywordflow" > return< / span > (< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > !=v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > || < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > !=v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ); }
< a name = "l00050" > < / a > 00050
< a name = "l00051" > < / a > 00051 < span class = "comment" > // negation< / span >
< a name = "l00052" > < / a > < a class = "code" href = "struct_vector2.html#a339f9c13f2e01782181cc9eb1eaa72ab" > 00052< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#a339f9c13f2e01782181cc9eb1eaa72ab" > operator -< / a > (< span class = "keywordtype" > void< / span > )< span class = "keyword" > const< / span >
< a name = "l00053" > < / a > 00053 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > (-< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > , -< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ); }
< a name = "l00054" > < / a > 00054
< a name = "l00055" > < / a > 00055 < span class = "comment" > // addition< / span >
< a name = "l00056" > < / a > < a class = "code" href = "struct_vector2.html#a83a3ed475d346606e6617494aadd89d7" > 00056< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#a83a3ed475d346606e6617494aadd89d7" > operator +< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)< span class = "keyword" > const< / span >
< a name = "l00057" > < / a > 00057 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > (< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > +v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > , < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > +v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ); }
< a name = "l00058" > < / a > 00058
< a name = "l00059" > < / a > 00059 < span class = "comment" > // subtraction< / span >
< a name = "l00060" > < / a > < a class = "code" href = "struct_vector2.html#a7de0652ddb37d61ad2629c912edb0ec6" > 00060< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#a339f9c13f2e01782181cc9eb1eaa72ab" > operator -< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)< span class = "keyword" > const< / span >
< a name = "l00061" > < / a > 00061 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > (< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > -v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > , < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > -v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ); }
< a name = "l00062" > < / a > 00062
< a name = "l00063" > < / a > 00063 < span class = "comment" > // uniform scaling< / span >
< a name = "l00064" > < / a > < a class = "code" href = "struct_vector2.html#a518fc5ef42a00f68e65acce7c4e20bfa" > 00064< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#a518fc5ef42a00f68e65acce7c4e20bfa" > operator *< / a > (< span class = "keyword" > const< / span > T num)< span class = "keyword" > const< / span >
< a name = "l00065" > < / a > 00065 < span class = "keyword" > < / span > {
< a name = "l00066" > < / a > 00066 < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > temp(*< span class = "keyword" > this< / span > );
< a name = "l00067" > < / a > 00067 < span class = "keywordflow" > return< / span > temp*=num;
< a name = "l00068" > < / a > 00068 }
< a name = "l00069" > < / a > 00069
< a name = "l00070" > < / a > 00070 < span class = "comment" > // uniform scaling< / span >
< a name = "l00071" > < / a > < a class = "code" href = "struct_vector2.html#ac68df7fdae361068c6af67be44668407" > 00071< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#ac68df7fdae361068c6af67be44668407" > operator /< / a > (< span class = "keyword" > const< / span > T num)< span class = "keyword" > const< / span >
< a name = "l00072" > < / a > 00072 < span class = "keyword" > < / span > {
< a name = "l00073" > < / a > 00073 < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > temp(*< span class = "keyword" > this< / span > );
< a name = "l00074" > < / a > 00074 < span class = "keywordflow" > return< / span > temp/=num;
< a name = "l00075" > < / a > 00075 }
< a name = "l00076" > < / a > 00076
< a name = "l00077" > < / a > 00077 < span class = "comment" > // addition< / span >
< a name = "l00078" > < / a > < a class = "code" href = "struct_vector2.html#a5c004e8ca8365c0a2c266654f234023e" > 00078< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & < a class = "code" href = "struct_vector2.html#a5c004e8ca8365c0a2c266654f234023e" > operator +=< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)
< a name = "l00079" > < / a > 00079 {
< a name = "l00080" > < / a > 00080 < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > +=v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > ; < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > +=v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ;
< a name = "l00081" > < / a > 00081 < span class = "keywordflow" > return< / span > *< span class = "keyword" > this< / span > ;
< a name = "l00082" > < / a > 00082 }
< a name = "l00083" > < / a > 00083
< a name = "l00084" > < / a > 00084 < span class = "comment" > // subtraction< / span >
< a name = "l00085" > < / a > < a class = "code" href = "struct_vector2.html#a10ab47df2c0304ac442265f5d5d0b8a2" > 00085< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & < a class = "code" href = "struct_vector2.html#a10ab47df2c0304ac442265f5d5d0b8a2" > operator -=< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)
< a name = "l00086" > < / a > 00086 {
< a name = "l00087" > < / a > 00087 < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > -=v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > ; < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > -=v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ;
< a name = "l00088" > < / a > 00088 < span class = "keywordflow" > return< / span > *< span class = "keyword" > this< / span > ;
< a name = "l00089" > < / a > 00089 }
< a name = "l00090" > < / a > 00090
< a name = "l00091" > < / a > 00091 < span class = "comment" > // uniform scaling< / span >
< a name = "l00092" > < / a > < a class = "code" href = "struct_vector2.html#a9ec8c1bae98c7bded59b4b80fa3e9dd5" > 00092< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & < a class = "code" href = "struct_vector2.html#a9ec8c1bae98c7bded59b4b80fa3e9dd5" > operator *=< / a > (< span class = "keyword" > const< / span > T num)
< a name = "l00093" > < / a > 00093 {
< a name = "l00094" > < / a > 00094 < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > *=num; < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > *=num;
< a name = "l00095" > < / a > 00095 < span class = "keywordflow" > return< / span > *< span class = "keyword" > this< / span > ;
< a name = "l00096" > < / a > 00096 }
< a name = "l00097" > < / a > 00097
< a name = "l00098" > < / a > 00098 < span class = "comment" > // uniform scaling< / span >
< a name = "l00099" > < / a > < a class = "code" href = "struct_vector2.html#a969b871f32a8f0d25bd569302028165c" > 00099< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & < a class = "code" href = "struct_vector2.html#a969b871f32a8f0d25bd569302028165c" > operator /=< / a > (< span class = "keyword" > const< / span > T num)
< a name = "l00100" > < / a > 00100 {
< a name = "l00101" > < / a > 00101 < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > /=num; < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > /=num;
< a name = "l00102" > < / a > 00102 < span class = "keywordflow" > return< / span > *< span class = "keyword" > this< / span > ;
< a name = "l00103" > < / a > 00103 }
< a name = "l00104" > < / a > 00104
< a name = "l00105" > < / a > 00105 < span class = "comment" > // dot product< / span >
< a name = "l00106" > < / a > < a class = "code" href = "struct_vector2.html#a9e25e26dc47ede54ee2b49678aecdccf" > 00106< / a > T < a class = "code" href = "struct_vector2.html#a518fc5ef42a00f68e65acce7c4e20bfa" > operator *< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)< span class = "keyword" > const< / span >
< a name = "l00107" > < / a > 00107 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > < a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > *v.< a class = "code" href = "struct_vector2.html#a78fa1f2ed5e261c7fbeb8f3536a1ee34" > x< / a > + < a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > *v.< a class = "code" href = "struct_vector2.html#a6cfed8355591aa269f4dba43bd806ef9" > y< / a > ; }
< a name = "l00108" > < / a > 00108
< a name = "l00109" > < / a > 00109 < span class = "comment" > // gets the length of this vector squared< / span >
< a name = "l00110" > < / a > < a class = "code" href = "struct_vector2.html#a0fd42927ade2df86b44ca09dca1d8314" > 00110< / a > T < a class = "code" href = "struct_vector2.html#a0fd42927ade2df86b44ca09dca1d8314" > length_squared< / a > ()< span class = "keyword" > const< / span >
< a name = "l00111" > < / a > 00111 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > (T)(*< span class = "keyword" > this< / span > * *< span class = "keyword" > this< / span > ); }
< a name = "l00112" > < / a > 00112
< a name = "l00113" > < / a > 00113 < span class = "comment" > // gets the length of this vector< / span >
< a name = "l00114" > < / a > < a class = "code" href = "struct_vector2.html#a119c51f16f90ffb3b30ee59475e7fdf8" > 00114< / a > T < a class = "code" href = "struct_vector2.html#a119c51f16f90ffb3b30ee59475e7fdf8" > length< / a > ()< span class = "keyword" > const< / span >
< a name = "l00115" > < / a > 00115 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > (T)sqrt(*< span class = "keyword" > this< / span > * *< span class = "keyword" > this< / span > ); }
< a name = "l00116" > < / a > 00116
< a name = "l00117" > < / a > 00117 < span class = "comment" > // normalizes this vector< / span >
< a name = "l00118" > < / a > < a class = "code" href = "struct_vector2.html#ace2a626eaa79412e2946216e9c3e63c6" > 00118< / a > < span class = "keywordtype" > void< / span > < a class = "code" href = "struct_vector2.html#ace2a626eaa79412e2946216e9c3e63c6" > normalize< / a > ()
< a name = "l00119" > < / a > 00119 { *< span class = "keyword" > this< / span > /=< a class = "code" href = "struct_vector2.html#a119c51f16f90ffb3b30ee59475e7fdf8" > length< / a > (); }
< a name = "l00120" > < / a > 00120
< a name = "l00121" > < / a > 00121 < span class = "comment" > // returns the normalized vector< / span >
< a name = "l00122" > < / a > < a class = "code" href = "struct_vector2.html#a94313613241845651f3aba43ed9d5434" > 00122< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#a94313613241845651f3aba43ed9d5434" > normalized< / a > ()< span class = "keyword" > const< / span >
< a name = "l00123" > < / a > 00123 < span class = "keyword" > < / span > { < span class = "keywordflow" > return< / span > *< span class = "keyword" > this< / span > /< a class = "code" href = "struct_vector2.html#a119c51f16f90ffb3b30ee59475e7fdf8" > length< / a > (); }
< a name = "l00124" > < / a > 00124
< a name = "l00125" > < / a > 00125 < span class = "comment" > // reflects this vector about n< / span >
< a name = "l00126" > < / a > < a class = "code" href = "struct_vector2.html#ade6dd765f60fffb39e52cf117d043d97" > 00126< / a > < span class = "keywordtype" > void< / span > < a class = "code" href = "struct_vector2.html#ade6dd765f60fffb39e52cf117d043d97" > reflect< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & n)
< a name = "l00127" > < / a > 00127 {
< a name = "l00128" > < / a > 00128 < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > orig(*< span class = "keyword" > this< / span > );
< a name = "l00129" > < / a > 00129 < a class = "code" href = "struct_vector2.html#ae567d360aef8af212c7e3139cc22aff7" > project< / a > (n);
< a name = "l00130" > < / a > 00130 *< span class = "keyword" > this< / span > = *< span class = "keyword" > this< / span > *2 - orig;
< a name = "l00131" > < / a > 00131 }
< a name = "l00132" > < / a > 00132
< a name = "l00133" > < / a > 00133 < span class = "comment" > // projects this vector onto v< / span >
< a name = "l00134" > < / a > < a class = "code" href = "struct_vector2.html#ae567d360aef8af212c7e3139cc22aff7" > 00134< / a > < span class = "keywordtype" > void< / span > < a class = "code" href = "struct_vector2.html#ae567d360aef8af212c7e3139cc22aff7" > project< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)
< a name = "l00135" > < / a > 00135 { *< span class = "keyword" > this< / span > = v * (*< span class = "keyword" > this< / span > * v)/(v*v); }
< a name = "l00136" > < / a > 00136
< a name = "l00137" > < / a > 00137 < span class = "comment" > // returns this vector projected onto v< / span >
< a name = "l00138" > < / a > < a class = "code" href = "struct_vector2.html#a3212191028319eb5d8b00cfd85068722" > 00138< / a > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > < a class = "code" href = "struct_vector2.html#a3212191028319eb5d8b00cfd85068722" > projected< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v)
< a name = "l00139" > < / a > 00139 { < span class = "keywordflow" > return< / span > v * (*< span class = "keyword" > this< / span > * v)/(v*v); }
< a name = "l00140" > < / a > 00140
< a name = "l00141" > < / a > 00141 < span class = "comment" > // computes the angle between 2 arbitrary vectors< / span >
< a name = "l00142" > < / a > < a class = "code" href = "struct_vector2.html#a68370ff181ccbcc1731f531d4b813e84" > 00142< / a > T < a class = "code" href = "struct_vector2.html#a68370ff181ccbcc1731f531d4b813e84" > angle< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v1, < span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v2)
< a name = "l00143" > < / a > 00143 { < span class = "keywordflow" > return< / span > (T)acosf((v1*v2) / (v1.< a class = "code" href = "struct_vector2.html#a119c51f16f90ffb3b30ee59475e7fdf8" > length< / a > ()*v2.length())); }
< a name = "l00144" > < / a > 00144
< a name = "l00145" > < / a > 00145 < span class = "comment" > // computes the angle between 2 normalized arbitrary vectors< / span >
< a name = "l00146" > < / a > < a class = "code" href = "struct_vector2.html#ab64d67cf7a2946580a234e8e327d1bc3" > 00146< / a > T < a class = "code" href = "struct_vector2.html#ab64d67cf7a2946580a234e8e327d1bc3" > angle_normalized< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v1, < span class = "keyword" > const< / span > < a class = "code" href = "struct_vector2.html" > Vector2< T> < / a > & v2)
< a name = "l00147" > < / a > 00147 { < span class = "keywordflow" > return< / span > (T)acosf(v1*v2); }
< a name = "l00148" > < / a > 00148
< a name = "l00149" > < / a > 00149 };
< a name = "l00150" > < / a > 00150
< a name = "l00151" > < / a > < a class = "code" href = "vector2_8h.html#aa83d444bd6cbecb112158663c2e0c213" > 00151< / a > < span class = "keyword" > typedef< / span > < a class = "code" href = "struct_vector2.html" > Vector2< int> < / a > < a class = "code" href = "struct_vector2.html" > Vector2i< / a > ;
< a name = "l00152" > < / a > < a class = "code" href = "vector2_8h.html#a67842bda415130ff792b0e0f40899e50" > 00152< / a > < span class = "keyword" > typedef< / span > < a class = "code" href = "struct_vector2.html" > Vector2< unsigned int> < / a > < a class = "code" href = "struct_vector2.html" > Vector2ui< / a > ;
< a name = "l00153" > < / a > < a class = "code" href = "vector2_8h.html#af582ca987c4b5834434eac69cbbc5f68" > 00153< / a > < span class = "keyword" > typedef< / span > < a class = "code" href = "struct_vector2.html" > Vector2< long> < / a > < a class = "code" href = "struct_vector2.html" > Vector2l< / a > ;
< a name = "l00154" > < / a > < a class = "code" href = "vector2_8h.html#a0f0a8b46227cdb465d2f73d57281c972" > 00154< / a > < span class = "keyword" > typedef< / span > < a class = "code" href = "struct_vector2.html" > Vector2< unsigned long> < / a > < a class = "code" href = "struct_vector2.html" > Vector2ul< / a > ;
< a name = "l00155" > < / a > < a class = "code" href = "vector2_8h.html#a9f3739462b0605dcb64299fa289b6afe" > 00155< / a > < span class = "keyword" > typedef< / span > < a class = "code" href = "struct_vector2.html" > Vector2< float> < / a > < a class = "code" href = "struct_vector2.html" > Vector2f< / a > ;
< a name = "l00156" > < / a > 00156
< a name = "l00157" > < / a > 00157 < span class = "preprocessor" > #endif // VECTOR2_H< / span >
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2010-12-26 23:23:35 -04:00
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