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33 ///////////////////////////////////////////////////////////////////////////
37 #ifndef INCLUDED_IMATHINTERVAL_H
38 #define INCLUDED_IMATHINTERVAL_H
41 //-------------------------------------------------------------------
43 // class Imath::Interval<class T>
44 // --------------------------------
46 // An Interval has a min and a max and some miscellaneous
47 // functions. It is basically a Box<T> that allows T to be
50 //-------------------------------------------------------------------
62 //-------------------------
63 // Data Members are public
64 //-------------------------
69 //-----------------------------------------------------
70 // Constructors - an "empty" Interval is created by default
71 //-----------------------------------------------------
74 Interval(const T& point);
75 Interval(const T& minT, const T& maxT);
77 //--------------------------------
78 // Operators: we get != from STL
79 //--------------------------------
81 bool operator == (const Interval<T> &src) const;
84 // Interval manipulation
88 void extendBy(const T& point);
89 void extendBy(const Interval<T>& interval);
91 //---------------------------------------------------
92 // Query functions - these compute results each time
93 //---------------------------------------------------
97 bool intersects(const T &point) const;
98 bool intersects(const Interval<T> &interval) const;
104 bool hasVolume() const;
105 bool isEmpty() const;
109 //--------------------
110 // Convenient typedefs
111 //--------------------
114 typedef Interval <float> Intervalf;
115 typedef Interval <double> Intervald;
116 typedef Interval <short> Intervals;
117 typedef Interval <int> Intervali;
125 inline Interval<T>::Interval()
131 inline Interval<T>::Interval(const T& point)
138 inline Interval<T>::Interval(const T& minV, const T& maxV)
146 Interval<T>::operator == (const Interval<T> &src) const
148 return (min == src.min && max == src.max);
153 Interval<T>::makeEmpty()
155 min = limits<T>::max();
156 max = limits<T>::min();
161 Interval<T>::extendBy(const T& point)
172 Interval<T>::extendBy(const Interval<T>& interval)
174 if ( interval.min < min )
177 if ( interval.max > max )
183 Interval<T>::intersects(const T& point) const
185 return point >= min && point <= max;
190 Interval<T>::intersects(const Interval<T>& interval) const
192 return interval.max >= min && interval.min <= max;
197 Interval<T>::size() const
204 Interval<T>::center() const
211 Interval<T>::isEmpty() const
217 inline bool Interval<T>::hasVolume() const