public void XorRectRegion(Rectangle newRectangle)
{
//Step 0) Resize rectangle. Anything outside regionRectangle does not interest us as it will not be added to In
int backMinX = this.region.getCoord()[0];
int backMaxX = this.region.getCoord()[1];
int backMinY = this.region.getCoord()[2];
int backMaxY = this.region.getCoord()[3];
Rectangle back = new Rectangle(backMinX, backMaxX, backMinY, backMaxY);
Rectangle Rintersect = Rectangle.intersection(back, newRectangle);
if (!Rintersect.getInvalid())
{
// Step 1) Find Intersection with Rectangles
ListOperations intersect = ListOperations.regionListIntersect(this.In, newRectangle);
// Step 2) Add rectangles except for the intersection
this.In = addNotInIntersect(intersect, newRectangle);
// Step 3) do the offset thing
this.OffsetRegion();
}
else
{
this.OrRectRegion(newRectangle);
}
this.region.RegionRect(In);
}
public static Rectangle intersection(Rectangle a, Rectangle b)
{
//Falls a oder b invalid gebe einen invalid rectangle zurück
if((a.getInvalid() || b.getInvalid()))
{
Rectangle d = new Rectangle(0, -1, 0, 0);
return d;
}
// get intersection x_Axis:
int minX = Math.Max(a.getCoord()[0], b.getCoord()[0]);
int maxX = Math.Min(a.getCoord()[1], b.getCoord()[1]);
// get Intersection y-Axis:
int minY = Math.Max(a.getCoord()[2], b.getCoord()[2]);
int maxY = Math.Min(a.getCoord()[3], b.getCoord()[3]);
//Falls intersection keinen sinn macht, z.B. minX>maxX, dann setzt konstruktor invalid auf true;
Rectangle c = new Rectangle(minX, maxX, minY, maxY);
return c;
}