00001 /* 00002 Copyright (c) 2010, The Barbarian Group 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Cinder.h" 00026 #include "cinder/Vector.h" 00027 00028 #include <iostream> 00029 #include <utility> 00030 #include <boost/rational.hpp> 00031 00032 namespace cinder { 00033 00034 template<typename T> 00035 class RectT; 00036 00037 template<typename T> 00038 class AreaT { 00039 public: 00040 AreaT() {} 00041 AreaT( const Vec2<T> &UL, const Vec2<T> &LR ); 00042 AreaT( T aX1, T aY1, T aX2, T aY2 ) 00043 { set( aX1, aY1, aX2, aY2 ); } 00044 template<typename Y> 00045 explicit AreaT( const AreaT<Y> &aAreaBase ); 00046 explicit AreaT( const RectT<float> &r ); 00047 00048 void set( T aX1, T aY1, T aX2, T aY2 ); 00049 00050 T getWidth() const { return x2 - x1; } 00051 T getHeight() const { return y2 - y1; } 00052 Vec2<T> getSize() const { return Vec2<T>( x2 - x1, y2 - y1 ); } 00053 T calcArea() const { return getWidth() * getHeight(); } 00054 00055 void clipBy( const AreaT<T> &clip ); 00056 AreaT<T> getClipBy( const AreaT<T> &clip ) const; 00057 00059 void offset( const Vec2<T> &off ); 00061 AreaT<T> getOffset( const Vec2<T> &off ) const; 00063 void moveULTo( const Vec2<T> &newUL ); 00065 AreaT<T> getMoveULTo( const Vec2<T> &newUL ) const; 00067 void expand( T expandX, T expandY ) { x1 -= expandX; x2 += expandX; y1 -= expandY; y2 += expandY; } 00068 00069 T getX1() const { return x1; } 00070 void setX1( T aX1 ) { x1 = aX1; } 00071 T getY1() const { return y1; } 00072 void setY1( T aY1 ) { y1 = aY1; } 00073 T getX2() const { return x2; } 00074 void setX2( T aX2 ) { x2 = aX2; } 00075 T getY2() const { return y2; } 00076 void setY2( T aY2 ) { y2 = aY2; } 00077 Vec2<T> getUL() const { return Vec2<T>( x1, y1 ); } // left-top offset 00078 Vec2<T> getLR() const { return Vec2<T>( x2, y2 ); } // right-bottom offset 00079 00080 bool contains( const Vec2<T> &offset ) const; 00081 template<typename Y> 00082 bool contains( const Vec2<Y> &offset ) const { return contains( Vec2<T>( (T)math<Y>::ceil( offset. x ), (T)math<Y>::ceil( offset.y ) ) ); } 00083 bool intersects( const AreaT<T> &area ) const; 00084 00086 template<typename Y> 00087 float distance( const Vec2<Y> &pt ) const; 00089 template<typename Y> 00090 float distanceSquared( const Vec2<Y> &pt ) const; 00091 00093 template<typename Y> 00094 Vec2<Y> closestPoint( const Vec2<Y> &pt ) const; 00095 00096 T x1, y1, x2, y2; 00097 00098 bool operator==( const AreaT<T> &aArea ) const { return ( ( x1 == aArea.x1 ) && ( y1 == aArea.y1 ) && ( x2 == aArea.x2 ) && ( y2 == aArea.y2 ) ); } 00099 bool operator<( const AreaT<T> &aArea ) const; 00100 00101 const AreaT<T> operator+( const Vec2<T> &o ) const { return this->getOffset( o ); } 00102 const AreaT<T> operator-( const Vec2<T> &o ) const { return this->getOffset( -o ); } 00103 00104 AreaT<T>& operator+=( const Vec2<T> &o ) { offset( o ); return *this; } 00105 AreaT<T>& operator-=( const Vec2<T> &o ) { offset( -o ); return *this; } 00106 00107 static AreaT<T> proportionalFit( const AreaT<T> &srcArea, const AreaT<T> &dstArea, bool center, bool expand = false ); 00108 00109 friend std::ostream& operator<<( std::ostream &o, const AreaT<T> &area ) 00110 { 00111 return o << "(" << area.x1 << ", " << area.y1 << ")-(" << area.x2 << ", " << area.y2 << ")"; 00112 } 00113 }; 00114 00115 typedef AreaT<int32_t> Area; 00116 typedef AreaT<boost::rational<int32_t> > AreaRational; 00117 00118 extern std::pair<Area,Vec2i> clippedSrcDst( const Area &srcSurfaceBounds, const Area &srcArea, const Area &dstSurfaceBounds, const Vec2i &dstLT ); 00119 00120 } // namespace cinder