MantisBT - ParaView
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0005339ParaView(No Category)public2007-07-13 12:462007-09-05 16:39
Ken Moreland 
Utkarsh Ayachit 
highmajoralways
closedfixed 
 
 
0005339: No scale on vol ren scalar opacity mapping
For unstructured volume rendering, it is important to have a scale parameter for the opacity mapping that defines what a unit length with respect to the opacity value means with respect to the model. ParaView 2 had this parameter, but it is missing in ParaView 3.

To see the need for the parameter, first create a wavelet source, convert it to an unstructured grid (filter it with Clean to Grid) and volume render it. The result will be an appropriately fuzzy image. Now run that through the transform filter to scale each dimension by 100. Volume render the result and it will look very opaque. This is because the opacity is now accumulating 100x as much as before the scaling.
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Issue History
2007-08-23 10:50Berk GeveciAssigned ToBerk Geveci => Utkarsh Ayachit
2007-08-23 10:50Berk GeveciPrioritynormal => high
2007-08-23 17:10Berk GeveciCategory => 3.2
2007-08-28 13:57Utkarsh AyachitNote Added: 0008716
2007-08-28 13:57Utkarsh AyachitStatustabled => @80@
2007-08-28 13:57Utkarsh AyachitResolutionopen => fixed
2007-08-29 12:59Ken MorelandStatus@80@ => @20@
2007-08-29 12:59Ken MorelandResolutionfixed => reopened
2007-08-29 12:59Ken MorelandNote Added: 0008736
2007-08-29 13:32Utkarsh AyachitStatus@20@ => @80@
2007-08-29 13:32Utkarsh AyachitResolutionreopened => fixed
2007-08-29 13:32Utkarsh AyachitNote Added: 0008742
2007-08-30 15:11Ken MorelandStatus@80@ => @20@
2007-08-30 15:11Ken MorelandResolutionfixed => reopened
2007-08-30 15:11Ken MorelandNote Added: 0008783
2007-08-31 10:04Utkarsh AyachitStatus@20@ => @80@
2007-08-31 10:04Utkarsh AyachitResolutionreopened => fixed
2007-08-31 10:04Utkarsh AyachitNote Added: 0008787
2007-09-05 16:39Ken MorelandStatus@80@ => closed
2011-06-16 13:10Zack GalbreathCategory => (No Category)

Notes
(0008716)
Utkarsh Ayachit   
2007-08-28 13:57   
This has been fixed.
(0008736)
Ken Moreland   
2007-08-29 12:59   
How is this fixed? I don't see any change.
(0008742)
Utkarsh Ayachit   
2007-08-29 13:32   
There's a Scalar Opacity Unit distance widget on the display tab. What was missing, I guess, is setting the default value based on the bounds, which is now added.

/cvsroot/ParaView3/ParaView3/Qt/Core/pqPipelineRepresentation.cxx,v <-- pqPipelineRepresentation.cxx
new revision: 1.11; previous revision: 1.10
(0008783)
Ken Moreland   
2007-08-30 15:11   
One more small request. Could you move the Scalar Opacity Unit Distance dialog box to the Color Scale Editor dialog box? That is where it was in ParaView 2 and where I would expect it now.
(0008787)
Utkarsh Ayachit   
2007-08-31 10:04   
Moved scalar opacity unit distance widget to color scale editor dialog.

/cvsroot/ParaView3/ParaView3/Qt/Components/pqColorScaleEditor.cxx,v <-- pqColorScaleEditor.cxx
new revision: 1.33; previous revision: 1.32
/cvsroot/ParaView3/ParaView3/Qt/Components/pqDisplayProxyEditor.cxx,v <-- pqDisplayProxyEditor.cxx
new revision: 1.41; previous revision: 1.40
/cvsroot/ParaView3/ParaView3/Qt/Components/Resources/UI/pqColorScaleDialog.ui,v <-- pqColorScaleDialog.ui
new revision: 1.7; previous revision: 1.6
/cvsroot/ParaView3/ParaView3/Qt/Components/Resources/UI/pqDisplayProxyEditor.ui,v <-- pqDisplayProxyEditor.ui
new revision: 1.25; previous revision: 1.24