Newbie: Efficient overlapping windows

Newbie: Efficient overlapping windows

Post by Douglas Eleve » Mon, 10 Feb 1997 04:00:00



Does anyone know how I can implement efficient overlapping windows for my GUI?

When I update a window, I image it makes a huge difference in update
speed if it's partially, completely or not overlapped with another.  What's
the best way do update the windows in this case?

P.S. If the answer is in the FAQ, then where is the FAQ?

Thanks in advance,

Doug Eleveld

 
 
 

1. Newbie: Check overlapping squares

Hi,

I want want to check if several given squares do not overlap. These squares
are given as xmin, xmax, ymin and ymax. The sqaures can be of different
size, but form an even larger square.

(view widt a unscalable font)
^   +-------------+-----+--------------+
|   |             |     |              |
Y   +---------+---+-----+----+---------+
    |         |              |         |
    +---------+              +---------+
    |         |              |         |
    +-----+---+------+-------+         |
    |     |          |       |         |
    +-----+----------+       |         |
    |     |          |       |         |
    +-----+----------+-------+---------+

                                    X ->

Any suggestions what algorithm I could use?

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