[REBOL] Re: dynamically adding images
From: petr:krenzelok:trz:cz at: 22-Oct-2001 12:03
Carl Read wrote:
> On 22-Oct-01, Petr Krenzelok wrote:
> > Brett Handley wrote:
> >> Hi Graham,
> >>>>> Anyone got a short example on how to add/remove images
> >>>>> dynamically to a face?
> >>>> Each image requires its own face, doesn't it?
> >>> Don't think so.
> >>> Perhaps I should clarify - I need to add from 1 to 400 of
> >>> the same image onto a face. I don't want to put 400 on to
> >>> the face and move them as required. I want to add/remove
> >>> them to/from the layout.
> >> I'm a bit rusty not having used Rebol for a while (been
> >> travelling), but I
> >> think Carl is correct, each image is displayed by a face. If you
> >> need 1 to
> >> 400 images incrementally added/removed to/from a layout (the main
> >> face) then
> >> you will need 1 to 400 faces created/destroyed or shown/hidden at
> >> the
> >> appropriate time.
> > This is not imo true and Cyphre will show us another aproach with
> > his upcoming game :-) If I understand him correctly, he uses 1 main
> > face, and every other image is being drawn using draw effect
> > dialect. Then you need only one show to your top face ... Of course
> > the question is which aproach is more efficient ...
> Graham's trying to move from the draw dialect to bitmap images. Are
> you saying the draw dialect can be used to display bitmaps? (One can
> but hope.:)
of course it can ;-) You can find example in Easy Draw doc in Rebol
desktop/rebol.com/docs section ...