[news.eclipse.tools] Re: Here is what we are trying to do...

["Randy Hudson" <none@xxxxxxx>]

Suppose the drawing is 10,000 x 10,000 pixels, and the Thumbnail is 67 x 67?
Where would I place the first 1000 x 1000 tile?  There is no way to preserve
the scale factor of .0067 unless you could do:

gc.drawImage ( buffer, 0,0,1000,1000, 0, 0, 6.7, 6.7);

That is the problem with tiling.  We can't place the tiles in the correct
place on the thumbnail.

"Nick Edgar" <nick_edgar@xxxxxxx> wrote in message
news:9k6eb1$qst$1@xxxxxxxxxxxxxxxx
> I see the problem.  About the only thing I could suggest is tiling the
large
> image, eg. into 1000x1000 chunks, and blitting them down to your thumbnail
> one at a time (it would be best to reuse the tile image rather than
> recreating it).  But you'd have to be careful about overlaps.
> Maybe you calculate the maximum area within your thumbnail corresponding
to
> an area in the whole drawing which is less than some reasonable limit.  So
> you'd always be scaling down to an integral number of pixels in the
> thumbnail.
>
>
>