Question

How do I go about making boundaries on drawing an NSMakeRect when my x and y coordinates are equal to the mouse coordinates. I do not want my NSRect to be drawn past a certain coordiante

NSMakeRect(mouseLoc.x, mouseLoc.y, 50, 50);

Do I create a range or max x and y values and if so how do i incorporate it into my MakeRect?

Thanks

Answer 1

If you’re building 64-bit, then NSRect is typedefed to be CGRect. You can do the following:

CGRect oldRect; // This is the rectangle's previous position saved somewhere
CGRect newRect = NSMakeRect (mouseLoc.x, mouseLoc.y, 50, 50);
if (CGRectContainsRect (constrainingRect, newRect))
{
    oldRect = newRect;
}

So you construct the new rectangle, see if it’s contained in the larger bounding rectangle, and if so, replace the old one with the new one. Otherwise, use the old one again.