OpenEuphoria

RE: large bitmap

• Posted by Mike <vulcan at win.co.nz> Feb 05, 2002
• 385 views

Tone, I have just now sent an update of my dib  library to RDS. The only 
adjustments made in this release were adding 2 new demos. These demos 
show zooming and displaying only part of a bitmap (in this case a dib). 
If your computer has enough memory (ram) then this will not be a problem 
but to load 100mb might take some time..

Mike


tone.skoda at siol.net wrote:
> First, how can I read only a part of bitmap? Let's say I have a very 
> large bitmap, 100MB, and I want to only read one rectangle out of it.
> This is Windows bitmap (I am a little confused what types of bitmaps are 
> there, DIB?, ...)
> 
> Second, I want to display that large bitmap zoomed out. I was thinking I 
> would only read every third byte from file, or whatever zoom there is, 
> so that loading would be much faster, especially if bitmap would be very 
> zoomed out.