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0029191Open CASCADE[OCCT] OCCT:Visualizationpublic2017-10-06 12:172019-08-12 14:28
abv 
kgv 
normalminor 
verifiedfixed 
[OCCT] 6.8.0 
[OCCT] 7.4.0* 
0029191: Visualization - viewer rotations are not smooth
When displayed shape is flat, after resetting the view so that the shape becomes parallel to the screen, rotations of the viewer by mouse become not smooth: even small movements lead to strange jumps. Sometimes parts of the shape get clipped by front or rear clip planes.
DRAW script to prepare scene:

pload AISV
restore [locate_data_file bug29191.brep] a
# when sub-shapes are displayed separately, effect is more noticeable
foreach s [explode a] { vdisplay $s }
vtop
vfit
No tags attached.
related to 0029837verified bugmaster Open CASCADE Visualization, Graphic3d_Camera - Fit All operation works incorrectly on flat object 
child of 0025063closed bugmaster Open CASCADE Visualization - 2D objects are not displayed at some camera positions 
zip bug29191.zip (187,696) 2017-10-06 12:20
https://tracker.dev.opencascade.org/
? occ_2d_rotate_KO.mp4 (1,784,638) 2017-10-06 13:52
https://tracker.dev.opencascade.org/
Issue History
2017-10-06 12:17abvNew Issue
2017-10-06 12:17abvAssigned To => kgv
2017-10-06 12:19abvSteps to Reproduce Updatedbug_revision_view_page.php?rev_id=17839#r17839
2017-10-06 12:20abvFile Added: bug29191.zip
2017-10-06 12:35abvDescription Updatedbug_revision_view_page.php?rev_id=17841#r17841
2017-10-06 13:52kgvFile Added: occ_2d_rotate_KO.mp4
2017-10-06 15:03kgvProduct Version => 7.2.0
2017-10-06 15:06kgvProduct Version7.2.0 => 6.8.0
2017-10-06 15:08kgvRelationship addedchild of 0025063
2017-10-06 15:11kgvRelationship addedchild of 0024001
2019-07-29 21:11kgvRelationship addedrelated to 0029837
2019-07-31 15:15kgvRelationship addedrelated to 0030482
2019-08-05 09:00kgvNote Added: 0086009
2019-08-05 09:00kgvAssigned Tokgv => abv
2019-08-05 09:00kgvStatusnew => resolved
2019-08-12 14:27abvNote Added: 0086186
2019-08-12 14:27abvStatusresolved => feedback
2019-08-12 14:28abvNote Added: 0086188
2019-08-12 14:28abvStatusfeedback => verified
2019-08-12 14:28abvResolutionopen => fixed
2019-08-12 14:28abvAssigned Toabv => kgv

Notes
(0086009)
kgv   
2019-08-05 09:00   
Should be fixed by patch for 0029837.
(0086186)
abv   
2019-08-12 14:27   
The issue has been fixed, now rotation is smooth, thanks!
(0086188)
abv   
2019-08-12 14:28   
I do not see easy way to create a test case (it is interactive operation), thus assume we do not need one