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[Devel] transformation problem
From: |
Werner LEMBERG |
Subject: |
[Devel] transformation problem |
Date: |
Thu, 27 Jun 2002 11:52:58 +0200 (CEST) |
David Turner mentioned on the FreeType list:
> Note also that the OpenType specification doesn't specify whether a
> transformation matrix within a composite glyph is stored as [ xx xy
> yx yy ] or [ xx yx xy yy ] ...
>
> The Apple TrueType specification suggests that it's really [ xx yx
> xy yy ], however. The TrueType loader (of FreeType) expects [ xx xy
> yx yy ]. This works e.g. with wingding.ttf.
The above assumes the following computation rule:
zx = x*xx + y*xy
zy = y*yx + y*yy
Can someone clarify this, please? It should probably added to the
specs.
Werner
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