Re: [AD] clipping, sub bitmaps

[Matthew Leverton <meffer@xxxxxxxxxx>]

On Wed, Aug 19, 2009 at 10:05 AM, Thomas Fjellstrom<tfjellstrom@xxxxxxxxxx> wrote:
>
> What is it exactly do you want? You want Sub bitmaps but don't want to use
> offsets? That's what sub bitmaps are :o
>
Offsets aren't what I suggested; Elias did. The offset idea is only
for drawing bitmaps, and is tied to the source.

al_set_offset(bmp, 16, 16);
al_draw_bitmap(bmp, 0, 0); //  draws to 16,16

Whereas I'm suggesting specifying the origin for the target bitmap to
go along with clipping, which is totally different from above:

al_set_origin(16, 16);
al_draw_bitmap(bmp, 0, 0); // draws to 16, 16

It would affect all drawing operations.

The latter feature is what I would personally find extremely useful.
Yes, it's very similar to sub-bitmaps, but I need the origin to be
able to be positioned off of the bitmap, which currently is not
possible with sub bitmaps. Also, sub-bitmaps have the overhead of
creating bitmaps and destroying them.

--
Matthew Leverton