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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0008690 | ParaView | (No Category) | public | 2009-03-06 11:57 | 2011-01-13 17:00 | ||||
| Reporter | Ken Moreland | ||||||||
| Assigned To | Ken Moreland | ||||||||
| Priority | normal | Severity | minor | Reproducibility | have not tried | ||||
| Status | closed | Resolution | fixed | ||||||
| Platform | OS | OS Version | |||||||
| Product Version | |||||||||
| Target Version | 3.6 | Fixed in Version | 3.6 | ||||||
| Summary | 0008690: Rubber band zoom should change center of rotation | ||||||||
| Description | When you use the rubber band zoom anywhere but near the center of rotation, a subsequent rotation spins the object in strange ways. When the user does a rubber band zoom, the center of rotation should be moved somewhere to the middle of the area that was zoomed in on. | ||||||||
| Tags | No tags attached. | ||||||||
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| Notes | |
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(0015598) Utkarsh Ayachit (administrator) 2009-03-08 14:44 |
Reset center of rotation when user zooms to box. /cvsroot/ParaView3/ParaView3/Qt/Core/pqRenderView.h,v <-- Qt/Core/pqRenderView.h new revision: 1.27; previous revision: 1.26 /cvsroot/ParaView3/ParaView3/Qt/Core/pqRubberBandHelper.cxx,v <-- Qt/Core/pqRubberBandHelper.cxx new revision: 1.12; previous revision: 1.11 |
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(0015636) Alan Scott (manager) 2009-03-10 20:17 |
There is an error in the zoom. Replicate as follows: Paraview trunk, local server, XP. Open Can.exo. +Y Rubber band zoom, starting to the left and below the left bottom of the can. End slightly to the right and above the left bottom of the can. Notice that the whole screen is filled. This is wrong. |
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(0015693) Eric Monson (reporter) 2009-03-16 10:49 |
There is another problem with the zoom: When you zoom in very close on something (as in note 0015636 above) the camera view angle is changed to some very low value which is not reflected correctly in the Adjust Camera dialog. (If you Reset the view it almost looks like parallel projection.) With a default 3d view the Adjust Camera dialog will still say 30 degrees, as does servermanager.GetRenderView().CameraViewAngle. To see the difference, reset the angle to 30.01 degrees in the dialog, or directly to 30 in Python, and see the big adjustment in the view. |
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(0016476) Ken Moreland (manager) 2009-05-15 10:06 |
The previous two notes presented two separate problems, each of which are different than the original request of this bug. The first issue deals with a general problem of zooming and translating simultaneously in perspective mode. The problem is that when you translate parallel to the viewing plane (which you must do for a rubber band zoom), geometry near the camera moves a different amount on screen than geometry far from the camera. The rubber band zoom picks a particular distance from the camera and bases the translation on that point. Any geometry not at the same depth will not move the exact same amount. This disparity becomes most noticeable when you draw a little box in the corner of the view (which is what is described above) because the difference between movements near and far are greatest and the zoom in is extreme and therefore makes the change the most noticeable. THERE IS NO RELIABLE WAY TO FIX THIS. Fortunately, it seems to behave well enough if you do not do extreme views. So if you do the view described above, but incrementally with, say three zooms, it behaves pretty well. The second issue deals with the viewing angle. (Good call. I didn't notice that.) That was caused because the rubber band zoom was using the viewing angle to make the object look bigger whereas all the other interactions move the camera closer or further away to perform the zoom. I change the interactor to dolly the camera instead of adjusting the viewing angle. This should be fixed now. /cvsroot/VTKData/VTKData/Baseline/Rendering/TestStyleRubberBandZoom.png,v <-- TestStyleRubberBandZoom.png new revision: 1.4; previous revision: 1.3 /cvsroot/ParaView3/ParaView3/VTK/Rendering/vtkInteractorStyleRubberBandZoom.cxx,v <-- vtkInteractorStyleRubberBandZoom.cxx new revision: 1.11; previous revision: 1.10 |
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(0016489) Alan Scott (manager) 2009-05-15 17:21 |
Tested local server. |
| Notes |
| Issue History | |||
| Date Modified | Username | Field | Change |
| 2009-03-06 11:57 | Ken Moreland | New Issue | |
| 2009-03-06 11:57 | Ken Moreland | Status | backlog => tabled |
| 2009-03-06 11:57 | Ken Moreland | Assigned To | => Utkarsh Ayachit |
| 2009-03-08 14:44 | Utkarsh Ayachit | Note Added: 0015598 | |
| 2009-03-08 14:44 | Utkarsh Ayachit | Status | tabled => @80@ |
| 2009-03-08 14:44 | Utkarsh Ayachit | Resolution | open => fixed |
| 2009-03-10 20:17 | Alan Scott | Note Added: 0015636 | |
| 2009-03-10 20:17 | Alan Scott | Status | @80@ => @20@ |
| 2009-03-10 20:17 | Alan Scott | Resolution | fixed => reopened |
| 2009-03-16 10:49 | Eric Monson | Note Added: 0015693 | |
| 2009-05-13 13:46 | Utkarsh Ayachit | Target Version | => 3.6 |
| 2009-05-14 18:01 | Ken Moreland | Status | @20@ => tabled |
| 2009-05-14 18:01 | Ken Moreland | Assigned To | Utkarsh Ayachit => Ken Moreland |
| 2009-05-15 10:06 | Ken Moreland | Note Added: 0016476 | |
| 2009-05-15 10:06 | Ken Moreland | Status | tabled => @80@ |
| 2009-05-15 10:06 | Ken Moreland | Fixed in Version | => 3.6 |
| 2009-05-15 10:06 | Ken Moreland | Resolution | reopened => fixed |
| 2009-05-15 17:21 | Alan Scott | Note Added: 0016489 | |
| 2009-05-15 17:21 | Alan Scott | Status | @80@ => closed |
| 2011-01-13 17:00 | Source_changeset_attached | => VTK master a2bd8391 | |
| 2011-01-13 17:00 | Source_changeset_attached | => VTK master 020ef709 | |
| 2011-06-16 13:10 | Zack Galbreath | Category | => (No Category) |
| Issue History |
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