Subject:
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Re: Parts Cataloging Program
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Newsgroups:
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lugnet.cad.dev
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Date:
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Tue, 28 Mar 2000 21:22:55 GMT
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Viewed:
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1912 times
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In lugnet.cad.dev, Don Heyse wrote:
> That's too bad, since it pretty much rules out GIF output directly from
> LdGLite. The last thing I need is annoying licensing restrictions.
Well, it's not *that* big'o'deal: GIF is restricted to 256 colors. If
you convert down to 256 colors, will PNG give compression on par with
GIF? If it doesn't, you can always look into BMP/RLE.
FYI, here are some links into the MS documentation:
Bitmap storage:
<http://msdn.microsoft.com/library/psdk/gdi/bitmaps_4v1h.htm>
Bitmap Compression:
<http://msdn.microsoft.com/library/psdk/gdi/bitmaps_6x0u.htm>
If these don't work, go to msdn.microsoft.com (may require a freebie
registration), and search for the topics 'Bitmap Storage' and/or 'Bitmap
Compression'.
> > 1) LDAO does this -- the HTML Generator uses ImageMagick to convert BMP
> > to GIF, and then LDAO tweaks the palette entries in the GIF files,
> > without touching the data blocks.
>
> Why do you have to tweak the palette entries? Should I be tweaking the
> true color values in the PNG files from LdGLite?
The HTML Generator only works with LDraw. The LDraw color values are a
bit messed, so LDAO modifies them.
Steve
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Message has 1 Reply:
 | | Re: Parts Cataloging Program
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| (...) From what I've seen PNG gives BETTER compression than GIF for flat shaded ldlite type images, and as far as I can tell it only does 32bpp true color. I put a sample PNG on the ldglite web page if you want to try converting to various formats (...) (24 years ago, 29-Mar-00, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: Parts Cataloging Program
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| (...) This problem is why I chose PNG. It compresses flat shaded images quite well and still retains the true color pixels. My comprehensive testing of one sample image (the one on the LdGLite web page) put the PNG file at about half the size of the (...) (24 years ago, 28-Mar-00, to lugnet.cad.dev)
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