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| author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2020-03-22 01:54:12 +0000 |
|---|---|---|
| committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2020-03-22 01:54:12 +0000 |
| commit | 895e9c3897d592b7df1c579a9522185c826c3a36 (patch) | |
| tree | 2dec329e3a6ab73aaac39b52a0acde8ea32e0f64 /pnmshear.html | |
| parent | d9bbf089cc1180650c6222cc4ce98c89c9ccb8b9 (diff) | |
| download | netpbm-mirror-895e9c3897d592b7df1c579a9522185c826c3a36.tar.gz netpbm-mirror-895e9c3897d592b7df1c579a9522185c826c3a36.tar.xz netpbm-mirror-895e9c3897d592b7df1c579a9522185c826c3a36.zip | |
miscellaneous update
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@3769 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'pnmshear.html')
| -rw-r--r-- | pnmshear.html | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/pnmshear.html b/pnmshear.html index 4ff36304..abdff36f 100644 --- a/pnmshear.html +++ b/pnmshear.html @@ -2,7 +2,7 @@ <HTML><HEAD><TITLE>Pnmshear User Manual</TITLE></HEAD> <BODY> <H1>pnmshear</H1> -Updated: 27 November 2006 +Updated: 22 March 2020 <BR> <A HREF="#index">Table Of Contents</A> @@ -48,8 +48,10 @@ If the angle is negative, it shears the other way: +-------+ +-------+ </PRE> -The angle should not get too close to 90 or -90, or the resulting -image will be unreasonably wide. +The angle should not get too close to 90 or -90, or the resulting image will +be unreasonably wide. In fact, if it gets too close, the width will be so +large that <b>pnmshear</b> cannot do computations in the word sizes it uses, +and the program detects this and fails. <P><b>pnmshear</b> does the shearing by looping over the source pixels and distributing fractions to each of the destination pixels. This |