ZRect ZRect::Intersection(const ZRect &rect) const
{
float tempX=0,tempY=0,tempW=0,tempH=0;
//can only grab the intersection if they intersect
if(Intersects(rect))
{
tempX = rX > rect.X() ? rX : rect.X();
tempY = rY > rect.Y() ? rY : rect.Y();
tempW = rX+rWidth < rect.Right() ? rX+rWidth : rect.Right();
tempH = rY+rHeight < rect.Bottom() ? rY+rHeight : rect.Bottom();
tempW -= tempX; //adjust width and height
tempH -= tempY;
}
return ZRect(tempX,tempY,tempW,tempH);
}
bool ZRect::Contains(const ZRect &rect) const
{
//contains all 4 points
return Contains(rect.Left(),rect.Top()) && Contains(rect.Right(),rect.Top()) &&
Contains(rect.Left(),rect.Bottom()) && Contains(rect.Right(),rect.Bottom());
}
bool ZRect::Intersects(const ZRect &rect) const
{
return !(rX > rect.Right() || rect.Left() > rX+rWidth ||
rY > rect.Bottom() || rect.Top() > rY+rHeight);
}