Just checking...

[Peter Achten]

Dear Jerzy,

At 13:35 23-5-00 +0100, you wrote:
>I should test that myself, but perhaps this is a quicker way...
>
>
>How *portable* is the StandardBitmap stuff?
>
>It seems that at least a substantial part of this OO.I/O is
>written in Clean. I ask because I do not understand that:
>
>"the only sensible information one can retrieve from a bitmap
>  is its size".

I don't know where you got the quote from: in the Tutorial to the Clean 
Object I/O Library the word "sensible" is not present...

>I would like to:
>
>1. Be able to draw PARTS of a bitmap
>2. ... and to blit them using XOR or other combination protocol.
>3. To store them on an external file using zlib (PNG format) or
>    anything I manage to produce.
>4. To be able to write a rotation procedure with, say, bicubic
>    interpolation.
>5. To be able to compute Fourier transforms, try the wavelet decom-
>    positions etc.
>
>So, in two words: I want to reinvent some wheels, which turn around
>everywhere. Please don't tell me that I don't need all this code.
>For pedagogic reasons it would be very nice to reimplement several
>image processing pieces in a functional way. Clean seems to be much
>more efficient than other functional languages in this contexts,
>so...

In a recent reply to a question of Valery Khamenya (dated 20-4-2000) I 
mentioned that in the Object I/O library bitmap handling is in its infancy. 
I would like to have all the goodies you describe above as well..., 
however, it has low priority in our team.

>M. Kesseler wrote a JPEG package, but - apparently - this is not (yet?)
>complete (I might be wrong).
>
>Best.
>
>Jerzy Karczmarczuk
>Caen, France

Greetings,
Peter Achten