rect.h

Go to the documentation of this file.

#ifndef __RECT_H
#define __RECT_H

#include <SDL/SDL.h>

class Rect
{
public:
        Rect() { r.x = r.y = r.w = r.h = 0; }
        Rect( int x, int y, int w, int h ) { setRect( x, y, w, h ); }
        ~Rect() {}

        void setRect( int x, int y, int w, int h ) { r.x = x; r.y = y; r.w = w; r.h = h; }
        SDL_Rect getRect() { return r; }
        int x() { return r.x; }
        int y() { return r.y; }
        int w() { return r.w; }
        int h() { return r.h; }

        void x( int x) { r.x = x; }
        void y( int y) { r.y = y; }
        void w( int w) { r.w = w; }
        void h( int h) { r.h = h; }

        void moveBy( int x, int y )
        {
                r.x += x;
                r.y += y;
        }

        bool intersects( Rect r2 )
        {
                int tw = r.w;
                int th = r.h;
                int rw = r2.w();
                int rh = r2.h();
                if (rw <= 0 || rh <= 0 || tw <= 0 || th <= 0) {
                        return false;
                }
                int tx = r.x;
                int ty = r.y;
                int rx = r2.x();
                int ry = r2.y();
                rw += rx;
                rh += ry;
                tw += tx;
                th += ty;

                //      overflow || intersect
                return ((rw < rx || rw > tx) &&
                        (rh < ry || rh > ty) &&
                        (tw < tx || tw > rx) &&
                        (th < ty || th > ry));
        }

private:
        SDL_Rect r;
};

#endif

---