[Synfig-devl] [ synfig-Bugs-1698604 ] Noise gradient and noise distort not working

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Bugs item #1698604, was opened at 2007-04-11 18:42
Message generated for change (Comment added) made by dooglus
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Category: Usability
Group: SVN version
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: dooglus (dooglus)
Summary: Noise gradient and noise distort not working

Initial Comment:
Noise gradient shows just one color, which seems to be the far right color in the gradient used. For example in the sample file "noise.sif" the gradient is fully transparent (I think it should some kind of flame)

The noise distort just moves the underlying image a bit not actually distorting it.

I think the noise function is not working correctly and it always returns the same value.

I'm using Ubuntu edgy on amd64 machine. I compiled Synfig from the latest source from SVN I checked out on 29.3.

-Heikki,
he...@sm...

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>Comment By: dooglus (dooglus)
Date: 2007-04-15 17:11

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Fixed in r469.

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Comment By: Heikki (hjoek)
Date: 2007-04-13 00:10

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Ok, here's what it printed:

ret1 = 3260590.500000
ret1 = 3260573.500000
ret1 = 3260585.000000
ret1 = 3260622.000000
ret1 = 68552.468750
ret1 = 3260613.250000
ret1 = 68515.507812
ret1 = 68539.500000
ret1 = 3260550.000000
ret1 = 68541.648438
ret1 = 68535.406250
ret1 = 68477.796875
ret1 = 68561.640625
ret1 = 68553.484375
ret1 = 68538.953125
ret1 = 68537.125000
ret1 = 3260570.250000
ret1 = 3260587.500000
ret1 = 3260549.000000
ret1 = 3260537.250000
ret1 = 68487.664062
ret1 = 3260547.750000
ret1 = 68548.531250
ret1 = 68524.531250
ret1 = 3260584.000000
ret1 = 68523.875000
ret1 = 68504.710938
ret1 = 68562.429688
ret1 = 68477.000000
ret1 = 68485.140625
ret1 = 68524.976562
ret1 = 68503.101562
ret1 = 3270324.000000
ret1 = 3270282.750000
ret1 = 3270377.750000
ret1 = 3270335.750000
ret1 = 58738.308594
ret1 = 3270300.500000
ret1 = 58796.601562
ret1 = 58821.769531
ret1 = 3270280.500000
ret1 = 58813.121094
ret1 = 58808.156250
ret1 = 58803.292969
ret1 = 58825.273438
ret1 = 58831.933594
ret1 = 58873.230469
ret1 = 58900.738281
ret1 = 3270278.250000
ret1 = 3270319.500000
ret1 = 3270328.000000
ret1 = 3270369.750000
ret1 = 58755.660156
ret1 = 3270302.000000
ret1 = 58800.652344
ret1 = 58775.406250
ret1 = 3270323.750000
ret1 = 58782.445312
ret1 = 58787.441406
ret1 = 58792.296875
ret1 = 58871.984375
ret1 = 58865.347656
ret1 = 58823.953125
ret1 = 58899.628906
ret1 = 3272143.250000
ret1 = 3272044.750000
ret1 = 3272133.250000
ret1 = 3272123.500000
ret1 = 56975.847656
ret1 = 3272094.500000
ret1 = 56958.234375
ret1 = 56957.925781
ret1 = 3272036.500000
ret1 = 56942.609375
ret1 = 56919.015625
ret1 = 56901.593750
ret1 = 57095.847656
ret1 = 56911.828125
ret1 = 56921.574219
ret1 = 56967.097656
ret1 = 3272069.000000
ret1 = 3272173.750000
ret1 = 3272055.250000
ret1 = 3272096.750000
ret1 = 57003.613281
ret1 = 3272117.750000
ret1 = 57035.507812
ret1 = 57035.792969
ret1 = 3272164.750000
ret1 = 57068.597656
ret1 = 57047.718750
ret1 = 57077.832031
ret1 = 56916.945312
ret1 = 57088.265625
ret1 = 57046.765625
ret1 = 57044.105469
ret1 = 3271467.500000
ret1 = 3271470.500000
ret1 = 3271399.500000
ret1 = 3271447.500000
ret1 = 57652.136719
ret1 = 3271481.250000
ret1 = 57665.777344
ret1 = 57665.910156
ret1 = 3271493.500000
ret1 = 57625.250000
ret1 = 57696.906250
ret1 = 57679.769531
ret1 = 57390.953125
ret1 = 57384.859375
ret1 = 57337.503906
ret1 = 57363.546875
ret1 = 3271493.750000
ret1 = 3271446.500000
ret1 = 3271423.750000
ret1 = 3271471.000000
ret1 = 57629.000000
ret1 = 3271454.750000
ret1 = 57693.140625
ret1 = 57693.011719
ret1 = 3271469.500000
ret1 = 57649.539062
ret1 = 57673.125000
ret1 = 57702.968750
ret1 = 57364.742188
ret1 = 57358.140625
ret1 = 57310.250000
ret1 = 57390.562500

-Heikki

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Comment By: dooglus (dooglus)
Date: 2007-04-12 21:29

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In that case my guess would be that the code in
* synfig-core/src/modules/mod_noise/random.cpp
doesn't work properly on your amd64.  Unfortunately I don't have access to
an amd64 machine to test this on.

You can help by applying this patch:
* http://dooglus.rincevent.net/synfig/random-patch.txt
in the core synfig directory then rebuilding synfig and running:

$ synfig -w 1 -h 1 messy.sif

on the same messy.sif file as before.  It'll print the 'random' values
it's using, and will confirm whether the random number generation is indeed
the problem.

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Comment By: Heikki (hjoek)
Date: 2007-04-12 19:54

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Here's how "messy.sif" renders on my conputer:

http://www.velvetdesperados.net/not_so_messy.png

As you can see the area to disort only moves a bit.

I could only find one version of libmod_noise.so...

-Heikki

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Comment By: dooglus (dooglus)
Date: 2007-04-12 01:05

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Note that 'noise' is a dynamically loaded module, loaded from
/usr/local/lib/synfig/modules/libmod_noise.so or some such.

Is it possible that you have 2 different versions of the module installed
(one from svn and one from your package manager perhaps?) and it's loading
the wrong one?

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Comment By: dooglus (dooglus)
Date: 2007-04-12 00:58

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I just tried, and it works for me.

When I load noise.sif into studio, I see a window like this:

http://dooglus.rincevent.net/synfig/1176331972.png

When I render the first frame of the animation using synfig like this:

$ synfig --time 0 ~/programs/synfig/svn/synfig-core/examples/noise.sif

I get a file like this:

http://dooglus.rincevent.net/synfig/noise.png

I also made a .sif file of my own showing a distortion layer:

http://dooglus.rincevent.net/synfig/messy.sif

It renders like this:

http://dooglus.rincevent.net/synfig/messy.png

I'm using svn r455, but I don't think anything has changed in this area
for a long time.

Can you check with my messy.sif and see whether you get the same messy.png
rendered?

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