AABoundingBox.h Source File

00001 /*
00002   File: AABoundingBox.h
00003 
00004   Copyright(C) C. Kotterink, Computed Graphics
00005 */
00006 #ifndef AABOUNDINGBOX_H
00007 #define AABOUNDINGBOX_H
00008 
00009 #include<Ray.h>
00010 #include<Vertex3.h>
00011 
00012 class ObjectFile;
00013 
00016 class AABoundingBox
00017 {
00018     friend ostream &operator<<(ostream &stream, const AABoundingBox &b);
00019     friend ObjectFile &operator>>(ObjectFile &f, AABoundingBox &b);
00020 public:
00021     AABoundingBox();
00022     AABoundingBox(Vertex3 &f, Vertex3 &t);
00023 
00024     Vertex3 size() const {
00025         return to - from;
00026     }
00027     Vertex3 center() const {
00028         return (to + from)*0.5;
00029     }
00030     void setRange(const Vertex3 &f, const Vertex3 &t);
00031     void getRange(Vertex3 &f, Vertex3 &t) const;
00032     const Vertex3 &getFrom() const {
00033         return from;
00034     }
00035     const Vertex3 &getTo() const {
00036         return to;
00037     }
00038 
00039     void clear();
00040     bool empty() const;
00041     void set(const Vertex3 &v, real r);
00042     void operator =(const Vertex3 &v) {
00043         from = v;
00044         to = v;
00045     }
00046 
00047     // Operators
00048     void sweep(Vertex3 &v);
00049     void operator +=(const Vertex3 &v);
00050 
00051     void operator =(const AABoundingBox &box) {
00052         from = box.from;
00053         to = box.to;
00054     }
00055     void operator +=(const AABoundingBox &box);
00056     void operator *=(const AABoundingBox &box);
00057     void sphere(const Vertex3 &v, real r);
00058 
00059     real distance(const Vertex3 &v) const;
00060     bool intersect(const AABoundingBox &box) const;
00061     bool intersect(const Ray &ray) const {
00062         real t0;
00063         real t1;
00064         return intersect(ray, t0, t1);
00065     }
00066     bool intersect(const Ray &ray, real &t0, real &t1) const;
00067 
00068 protected:
00069     Vertex3 from;
00070     Vertex3 to;
00071 };
00072 #endif