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Re: Bitmap image offset bug solution
From: |
Willem Rein Oudshoorn |
Subject: |
Re: Bitmap image offset bug solution |
Date: |
28 Jan 2002 22:44:34 +0100 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.1 |
Pete French <pete@twisted.org.uk> writes:
> Simply removing this line
[refering to line 1758, which is rect.origin = point;]
> fixes the bug as the origin becomes 0,0 from
> the initialisation at line 1700.
>
> I think I've got this right, but given the recent discussions about
> co-oprdinate transformations on -discuss then I'd like someone to
> verify it.
Yes, this should do it.
Reason for removing
`rect.orging = point;'
in DPSimage
Is that the corresponding postscript operator
`image' maps as follows:
+-----+ +-----+ +-----+
| Im | <-- image matrx -- |user | -- CTM -> | page|
| | |space| | |
+-----+ +-----+ +-----+
So this does not involve the current value of point at all.
Wim Oudshoorn.