Subject:
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Visio and Picture formats (was New Parts Drawings - Plates, Slope, Track Pieces)
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Newsgroups:
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lugnet.parts.custom, lugnet.cad
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Followup-To:
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lugnet.cad
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Date:
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Sat, 5 Feb 2005 23:09:47 GMT
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Viewed:
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10054 times
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In lugnet.parts.custom, Larry Pieniazek wrote:
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In lugnet.parts.custom, Mark Bellis wrote:
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...
It’s just that I usually post jpegs or bitmaps
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Please consider not posting bitmaps. They are very space intensive and take a
long time to load. Instead use a lossless compressed format like .gif if you
can. In my view jpegs are not as good for things like line drawings, they are
better for continuous tone photos.
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I only use bitmaps when they are smaller than the equivalent jpeg - ie they are
monochrome ones. This was the case for the parts I’ve drawn so far. I’ve used
jpegs for colour pictures up to now.
I did a test with the 4x4 round plate drawing:
monochrome bitmap is 34KB
jpeg is 66KB
png is 63KB but loses definition
gif is 13KB
In this case the jpeg is larger than the bitmap, which is why I posted the
bitmap. I haven’t yet investigated GIFs or PNGs, so perhaps you could tell me:
Is GIF the standard highest compression, lowest loss format? If so, why doesn’t
everyone use them? I’ve seen animation in GIFs - how do you do that?
What are PNGs used for, since they lose definition?
Are GIFs or PNGs any more vulnerable to viruses than jpegs or bitmaps?
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My CAD expertise is more developed in circuit diagrams
(see technic mindstorms folder), but this is 2D and very quick in
Visio, now that I’ve drawn a few component symbols.
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Would you consider sharing your Visio library occasionally? Just a zip would
be great. Visio is a great tool I think!
Thanks!
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I’m glad Visio is so quick, since I can draw some circuits in my 30 minute lunch
break, saving on needing Visio at home. I copy the drawing to Paint and save as
a jpeg, since Visio seems to have a problem with saving picture files. I only
use the internet at home, due to work policy. Posted pictures are still open to
doctoring, but give away a little less than the source files. Perhaps you would
like to develop your own style :-) Feel free to use a print of one of my
circuits as you design your component symbols though.
For a resistor I drew a 1x2 rectangle with no fill at 100% in Visio, then at
200% added leads the same length as the box to the centres of the ends of the
box. I then put a text box by the side for the value. I grouped the four items
and set the double-click action to “Open group in new window”, so that I can
copy the resistor and edit the resistance value rather than draw another one.
I did the same with capacitors and diodes, making them a similar size. I’ve
done other components as required, keeping the same proportions, but now have
transistors, op-amps, batteries, relay contacts, Lego 9V plugs and some logic
gates. Other components are just a box. I use a line with the end set to 10
(round blob) a lot, since every T-junction should have a blob. I keep one of
each component in a template file, which I copy to start a new diagram. When I
start a new one I just delete the components I know I won’t need. For posting
on Brickshelf I set the line weight to 9 so that the wires show up.
The results are here: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=97964
Hmmm.. I think the FUT should be to lugnet.cad!
Mark
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Message is in Reply To:
 | | Re: New Parts Drawings - Plates, Slope, Track Pieces
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| (...) Please consider not posting bitmaps. They are very space intensive and take a long time to load. Instead use a lossless compressed format like .gif if you can. In my view jpegs are not as good for things like line drawings, they are better for (...) (20 years ago, 5-Feb-05, to lugnet.parts.custom, FTX)
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