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Subject: Help Needed
- From: Lofton Henderson <lofton@rockynet.com>
- To: cgmopen-members@lists.oasis-open.org
- Date: Tue, 15 May 2001 16:01:29 -0600
Hello CGM Open Members --
I need some contributions to help finish the WebCGM test suite.
I have finished work (for now) on one major part of the WebCGM suite --
the static-graphics parts. Unfortunately, this has taken *much*
more effort than I had planned (and I lost significant time in April for
personal reasons). Accordingly, I must put this part aside
for now and finish an acceptable "BE subset" of the dynamic
stuff.
Per the project plan, I started with the ATA grex (2.4) suite, threw out
a bunch of tests (e.g. ASFs, parabolic arcs, etc), modified all tests for
the global differences between ATA & WebCGM (e.g., the legend block),
fixed broken stuff, and modified for differences between ATA & WebCGM
(a real pain, esp little differences like ATA allows 'text' if monospaced
fonts are used, subtle differences in the color/monochrome rules,
etc).
I have produced PNG reference images for the current 232 static-graphics
tests in the WebCGM suite, using a batch run with the only tool available
to me. I have not figured out how to properly control the size and
resolution of the rasterized picture. As a result, especially the
text rendering is pretty low-quality, on all of the reference
pictures. It might technically pass the "max{1%, 1/2
pixel}" criterion, but it should look better for the reference
images of the suite's public release.
You will find what I have done at:
http://www.cgmopen.org/technical/webCGM-static-0515.zip
Unzip that file, then unzip the two resulting ZIP files (w/
the 'use folder names' option checked). You will see all of the
CGMs. I believe that these are all now correct WebCGM test cases,
and they all pass "metachek -r webcgm".
You will also see the file, webCGMframe.html. Open this in IE5.5
(NN won't work). It is the Javascript-based NIST harness, modified
for the WebCGM suite. You can use it to navigate and view the
reference images for the test cases.
Question. So who can contribute correct, better-quality reference
PNGs? Please let me know, either by public reply or
privately.
FYI, I think all of the reference images are more-or-less correct except
the following list (but this assertion could be wrong). I said
"more-or-less", because there are some marginal
renderings. For example, dotted lines are made with a short dash,
that to my eye is too long (look at the construction lines on any of the
circular/elliptical arc tests, for example). The list:
Wrong:
----------
COLLVL03
COLRMD02
LINSTD01
LINSTD03
ZEROSZ01
(BTW, I can get correct reference images by a painful process of view
[hsiview or metaweb], alt-shift-PrtScreen, paste into Adobe ImageReady,
crop, SaveAs png -- but this is very time consuming compared to what
several of you ought to be able to do with rasterizers.)
Questionable:
-------------------
INTSTL06
INTSTL07
INTSTL08
PATTBL01
PATTBL02
(I haven't verified yet whether the pattern orientations are correct in
these picture -- maybe, maybe not.)
Thanks,
-Lofton.
p.s. In the Javascript harness, you will notice that new tests and
some others have "TBD" for the Test Purpose and the Operator
Script. I'll sort this out later.
*******************
Lofton Henderson
1919 Fourteenth St., #604
Boulder, CO 80302
Phone: 303-449-8728
Email: lofton@rockynet.com
*******************
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