box2.h

Go to the documentation of this file.

/**********************************************************************
 *<
    FILE: box2.h

    DESCRIPTION:

    CREATED BY: Dan Silva

    HISTORY:

 *> Copyright (c) 1994, All Rights Reserved.
 **********************************************************************/
#pragma once

#include "GeomExport.h"
#include "maxheap.h"
#include "ipoint2.h"
#include "point2.h"
#include <wtypes.h>

class Box2: public RECT, public MaxHeapOperators {
    public:
    GEOMEXPORT Box2();
    GEOMEXPORT Box2(const IPoint2 a, const IPoint2 b);
    GEOMEXPORT int IsEmpty();
    GEOMEXPORT void SetEmpty();
    GEOMEXPORT void Rectify();   // makes top<bottom, left<right
    GEOMEXPORT void Scale(float f);
    GEOMEXPORT void Translate(IPoint2 t);

    IPoint2 GetCenter() { return IPoint2((left+right)/2, (top+bottom)/2); }
    int x() { return min(left,right); }
    int y() { return min(top,bottom); }
    int w() { return abs(right-left)+1; }
    int h() { return abs(bottom-top)+1; }
    
    void SetW(int w) { right = left + w -1; } 
    void SetH(int h) { bottom = top + h -1; } 
    void SetX(int x) { left = x; }
    void SetY(int y) { top = y; }
    void SetWH(int w, int h) { SetW(w); SetH(h); }
    void SetXY(int x, int y) { SetX(x); SetY(y); }

    GEOMEXPORT Box2& operator=(const RECT& r);
    GEOMEXPORT Box2& operator=(RECT& r);
    GEOMEXPORT Box2& operator+=(const Box2& b);
    GEOMEXPORT Box2& operator+=(const IPoint2& p);
    int operator==( const Box2& b ) const {     return (left==b.left && right==b.right && top==b.top && bottom==b.bottom); }
    GEOMEXPORT int Contains(const IPoint2& p) const;  // is point in this box?
    };

typedef Box2 Rect;


struct FBox2: public MaxHeapOperators {
    Point2 pmin;
    Point2 pmax;
    int IsEmpty() { return pmin.x>pmax.x?1:0; }
    void SetEmpty() { pmin = Point2(1E30,1E30); pmax = -pmin; }
    FBox2& operator=(const FBox2& r) { pmin = r.pmin; pmax = r.pmax; return *this; }
    GEOMEXPORT FBox2& operator+=(const Point2& p);
    GEOMEXPORT FBox2& operator+=(const FBox2& b);
    GEOMEXPORT int Contains(const Point2& p) const;  // is point in this box?
    };