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Notes |
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(0017002)
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Ken Moreland
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2009-07-28 20:14
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Damn you Exodus and your start index of 1!
This is probably a lot harder than it sounds. The problem is that the mode shape index is inexorably tied to time (Exodus' fault, not ours), and ParaView stores time values in arrays that start indices at 0 (like all other C arrays). There would have to be some hackery, probably at many levels, get this to work.
I suggest having Utkarsh take a look at this first. Perhaps he will think of some brilliant solution to work around the problem. |
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(0017003)
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Alan Scott
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2009-07-28 20:20
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lol! Why not keep the internal way we do it as is, and just hack the Object Inspector panel for the Exodus Reader? We would also probably have to hack the Information tab...
Another idea (and I DO NOT know what I am talking about here) - could we just move the values in the Exodus reader when the user selects Mode Shapes? I.e., leave the 0th entry with nothing in it, and shift all values up. When Mode Shapes are turned off, shift them back down... |
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(0017005)
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Ken Moreland
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2009-07-29 11:00
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Unfortunately, it's not that simple. The GUI components set up links between the widgets and SM properties. The link is implemented with a rather complicated set of objects whose guts I don't like to get into. I don't know of any easy way to get around this. You would also have to make similar hacks to the Python code (not a huge deal), and anyone who access the Exodus reader through C++ or some other means would have to know about the hack.
Moving the indices in the Exodus reader itself is not that easy either. I can think of several hurdle, the biggest one being that the mode values inevitably have to pass through a SM property, and these are indexed starting at 0.
Again, I think Utkarsh, the expert, needs to look at this. |
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(0017030)
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Utkarsh Ayachit
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2009-07-31 09:37
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Hmm, I am confused. Once "Has Mode Shape" is checked, the Exodus reader no longer produces timesteps, right? Instead it has a time-range [0-1].
So what the mode-shapes slider or even what the "ModeShape" property accepts as a value can be easily changed to be 1 offseted, right? It totally internal to ExodusReader and it's panel and has nothing to do with the rest of the ParaView so we can very easily simply say the ModeShape index starts with 1, instead of 0. I am sure I am missing something here. Ken? |
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(0017048)
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Ken Moreland
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2009-08-02 17:07
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OK. Now that you bring this up, this may not be the best implementation. When the reader first comes up, it always has mode shapes off. In that case, the reader will report the "time steps". Those time steps will be recorded as mode values in the GUI. (The values only matter in that they are presented to the user. The property takes the 0-based index.)
It might be better to just make another property that gets the time values as a regular ivar property. It might make the code a bit cleaner, but the 0- vs. 1-based indexing is still an issue. |
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(0017196)
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Alan Scott
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2009-08-24 16:46
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We want this in 3.6.2 if it ends up fairly easy and safe. Otherwise, defer to 3.8.0 |
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(0017306)
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Utkarsh Ayachit
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2009-09-02 13:31
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ModeShape index now goes from [1, N] rather than [0, N-1].
/cvsroot/ParaView3/ParaView3/VTK/Hybrid/vtkExodusIIReader.h,v <-- VTK/Hybrid/vtkExodusIIReader.h
new revision: 1.29; previous revision: 1.28
/cvsroot/ParaView3/ParaView3/Servers/ServerManager/Resources/readers.xml,v <-- Servers/ServerManager/Resources/readers.xml
new revision: 1.168; previous revision: 1.167
/cvsroot/ParaView3/ParaView3/Qt/Components/pqExodusIIPanel.cxx,v <-- Qt/Components/pqExodusIIPanel.cxx
new revision: 1.21; previous revision: 1.20
/cvsroot/ParaView3/ParaView3/Applications/Client/Testing/XML/ExodusModeShapes.xml,v <-- Applications/Client/Testing/XML/ExodusModeShapes.xml
new revision: 1.5; previous revision: 1.4
Pending 3.6 commit. |
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(0017308)
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Utkarsh Ayachit
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2009-09-02 13:34
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/cvsroot/ParaView3/ParaView3/Applications/Client/Testing/XML/ExodusModeShapes.xml,v <-- Applications/Client/Testing/XML/ExodusModeShapes.xml
new revision: 1.4.2.1; previous revision: 1.4
/cvsroot/ParaView3/ParaView3/Qt/Components/pqExodusIIPanel.cxx,v <-- Qt/Components/pqExodusIIPanel.cxx
new revision: 1.19.6.2; previous revision: 1.19.6.1
/cvsroot/ParaView3/ParaView3/Servers/ServerManager/Resources/readers.xml,v <-- Servers/ServerManager/Resources/readers.xml
new revision: 1.152.2.5; previous revision: 1.152.2.4
/cvsroot/ParaView3/ParaView3/VTK/Hybrid/vtkExodusIIReader.h,v <-- VTK/Hybrid/vtkExodusIIReader.h
new revision: 1.27.2.1; previous revision: 1.27 |
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(0017365)
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Alan Scott
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2009-09-09 22:02
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