[futurebasic] Re : [FB] cicn to PICT

Message: < previous - next > : Reply : Subscribe : Cleanse
Home   : January 1999 : Group Archive : Group : All Groups

From: "jonathan" <jonathan@...>
Date: Mon, 25 Jan 1999 09:47:19 +0100
Another point concerning the 32K limit on
some PICT resources. 

Someone said that they didn't know why their
FN was failing, as the image wasn't 32K...

But a PICT file format is not a bitmap format, so you cannot
just look at the size, of the bitmap data and say "I'm in the
32K limit". PICT files have undergone different incarnations
(metaphore, I've never seen a PICT file made flesh) but they
basicly come down to a Picture Description Language, using
QuickDraw (in a similar manner, a well-known Page Description
Language uses PostScript) and as in EPS files you can have
a bitmap rather than vectors contained within, in PICT you can
be in a similar situation, this can lead to confusion.

So, you are going to need at least a header, to tell the file
'reader' that the following information is bitmap,rather than
vector, meaning that, compression protocols aside, a PICT file
wil be bigger than the similar image in a 'pure' bitmap format.

Moreover, I saw references to OPENPICTURE, which is usually
used for recording the drawing of vector graphics - does this
work for bitmap graphics? - and what overhead does it create?

jonathan

PS. Sorry if these points have already been treated, I've only
been following this thread with a distant eye, but going from the
original post 'cicn to pict' if they haven't been mentioned, they
are relevant to the persistant problems that the postees have met.