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PaulLaidler
Site Admin
Joined: 21 Feb 2005
Posts: 8263
Location: Salford, UK
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 Posted: Sat Sep 13, 2025 12:52 pm Post subject: |
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Eddie
SIMPLE.DLL is still included in the installation in case it is needed for legacy code.
For new code and 3D graphics you could use OpenGL (via ClearWin+ %og say). Although there have been complaints about the learning curve for OpenGL, I suspect that SIMPLEPLOT would not be easier to use.
For 2D graphics you could use ClearWin+ %gr/%pl or %og.
There is also Bill Bardsley's SIMFIT library which can be accessed via Simdem.exe/x64_Simdem.exe and is described the help file under FTN95 then SIMFIT. This includes some 3D plotting.
The original (non_native) %pl does not use winop@. |
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LitusSaxonicum
Joined: 23 Aug 2005
Posts: 2420
Location: Yateley, Hants, UK
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| Posted: Sat Sep 13, 2025 1:10 pm Post subject: |
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Brilliant, Ken. I missed that - or forgot about it!
So what is SIMPLE.DLL?
Eddie |
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PaulLaidler
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Joined: 21 Feb 2005
Posts: 8263
Location: Salford, UK
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| Posted: Sat Sep 13, 2025 1:49 pm Post subject: |
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| SIMPLE.DLL is the 32bit DLL for the SIMPLEPLOT library. |
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LitusSaxonicum
Joined: 23 Aug 2005
Posts: 2420
Location: Yateley, Hants, UK
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| Posted: Sun Sep 14, 2025 11:12 am Post subject: |
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Having peeked at the documentation Ken pointed me to, I think Paul's assertion that SimplePlot 3D is likely to be as difficult as OpenGL is very likely to be correct.
I think that I'll take the very broad hints and do something else!
Eddie |
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LitusSaxonicum
Joined: 23 Aug 2005
Posts: 2420
Location: Yateley, Hants, UK
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| Posted: Fri Sep 19, 2025 11:06 am Post subject: |
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Ken,
That final example is a bit of a revelation. I suppose that with a different algorithm the second pass could be configured to produce coloured bands rather than a continuous spectrum.
It seems that red to blue through green is the simplest colour sequence. Some years ago I asked if anyone knew others. No response!
Eddie |
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Kenneth_Smith
Joined: 18 May 2012
Posts: 845
Location: Lanarkshire, Scotland.
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| Posted: Fri Sep 19, 2025 5:08 pm Post subject: |
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Eddie, it does not change the intention of the last example but the assignment for z should be:
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z = spread(sin(x), 2, size(y)) * spread(cos(y), 1, size(x)) + &
0.5d0 * spread(sin(2.0d0*x), 2, size(y)) * spread(cos(2.0d0*y), 1, size(x))
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I should have used to nested do loops! However I�m trying to keep the number of lines in these examples small � hence the use of spread.
Bands are a good idea. Here is a very slightly modified version of the example which allows the plot to be drawn with different numbers of levels:
https://www.dropbox.com/scl/fi/h2svtrszccn1dpi8l3y7d/ex31_new.f95?rlkey=66mkzu6wctmqw1zspyj1fzvz0&st=v42sm89i&dl=0
There is a very good discussion of colour ramps to be found here:
https://paulbourke.net/miscellaneous/colourspace/ |
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