View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0030484 | Open CASCADE | OCCT:Visualization | public | 2019-02-07 12:03 | 2023-09-11 16:49 |
| Reporter | nds | Assigned To | mzernova | ||
| Priority | high | Severity | major | ||
| Status | new | Resolution | open | ||
| Product Version | 7.3.0 | ||||
| Target Version | 7.8.0 | ||||
| Summary | 0030484: Visualization, SelectMgr_ViewerSelector - Graphic3d_TMF_2d persistence sorting issues | ||||
| Description | SelectMgr_ViewerSelector relies on the following SelectMgr_SortCriterion properties for sorting picking results, which might be invalid in case of 2D persistent (Graphic3d_TMF_2d) presentations: - Distance to the geometry center (SelectBasics_PickResult::DistToGeomCenter()). This property has no much sense for 2D objects. - Depth from eye with tolerance. The tolerance can have a negative sign for transformation-persistence objects leading to invalid comparison results for objects having equal depth. | ||||
| Steps To Reproduce |
pload MODELING VISUALIZATION
vclear
vinit View1
vselprops dynHighlight -dispMode 1 -color WHITE
box b1 75 -250 0 200 200 200
box b2 175 -300 0 200 200 200
vdisplay b1 -2d topLeft -top -dispmode 1
vsetmaterial b1 PLASTIC
vsetcolor b1 DEEPPINK2
vdisplay b2 -2d topLeft -top -dispmode 1
vsetmaterial b2 PLASTIC
vsetcolor b2 PALEGREEN2
vmoveto 205 170
if { [vreadpixel 205 170 rgb name] != "WHITE" } { puts "Error: common area should be highlighted" }
if { [vreadpixel 150 170 rgb name] == "WHITE" } { puts "Error: box b1 should NOT be highlighted" }
if { [vreadpixel 330 170 rgb name] != "WHITE" } { puts "Error: box b2 should be highlighted" }
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| Tags | No tags attached. | ||||
| Test case number | |||||
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30484_wrong_highlight.png (11,792 bytes) |
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Branch CR30484 has been created by nds. SHA-1: d812a0899284f8dc807f087cd77d6f68768924d7 Detailed log of new commits: Author: nds Date: Thu Feb 7 15:31:50 2019 +0300 0030484: Visualization - 2d persistent: order of detection doesn't coincide with order of objects creation |
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Zeroing MinDist for 2D objects is not really helpful - it can provide desired effect only within limited usage scenarios, while in other cases result will become worse. Consider extending your test case with removal/redisplay of first box: pload MODELING VISUALIZATION vclear vinit View1 vselprops dynHighlight -dispMode 1 -color WHITE box b1 75 -250 0 200 200 200 box b2 175 -300 0 200 200 200 vdisplay b1 -2d topLeft -top -dispmode 1 vsetmaterial b1 PLASTIC vsetcolor b1 DEEPPINK2 vdisplay b2 -2d topLeft -top -dispmode 1 vsetmaterial b2 PLASTIC vsetcolor b2 PALEGREEN2 vremove b1 vdisplay b1 -2d topLeft -top -dispmode 1 vsetmaterial b1 PLASTIC vsetcolor b1 DEEPPINK2 The result will be that b1 will now visually overlap b2, but highlighting (with patch applied) will tend to highlight b2 behind b1. The root cause of the issue is an attempt to display two overlapping 2D objects with the same depth, which in general case produce undefined behavior for both - selection and visualization. OCCT visualization does NOT guarantee rendering order for objects within a single ZLayer and having the same rendering priority - the actual rendering order following the order of displaying objects in AIS_InteractiveContext is a side effect of usage of collections with well-defined ordering in memory like to achieve reproducibility of visual results, and easily messed up after objects movements in context (like selecting/deselecting objects leading to movements from one Priority to another). So that in this particular use case it is really desired displaying objects with extra information (different display Priority, different ZLayer, artificially different Z) for producing coherent visual and selection results. Note that since Selection currently ignores Display Priority, this property still wouldn't help (although selection itself has its own independent Selection Priorities actually used for sorting). |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2019-02-07 12:03 | nds | New Issue | |
| 2019-02-07 12:03 | nds | Assigned To | => kgv |
| 2019-02-07 13:55 | nds | File Added: 30484_wrong_highlight.png | |
| 2019-02-07 13:55 | nds | Assigned To | kgv => nds |
| 2019-02-07 15:36 | git | Note Added: 0082063 | |
| 2019-05-01 12:00 | kgv | Product Version | => 7.3.0 |
| 2019-05-01 12:00 | kgv | Summary | Visualization - 2d persistent: order of detection doesn't coincide with order of objects creation => Visualization, SelectMgr_ViewerSelector - Graphic3d_TMF_2d persistence sorting issues |
| 2019-05-01 12:00 | kgv | Description Updated | |
| 2019-05-01 12:10 | kgv | Steps to Reproduce Updated | |
| 2019-05-01 12:24 | kgv | Note Added: 0084087 | |
| 2019-05-01 12:29 | kgv | Relationship added | related to 0030686 |
| 2019-05-01 12:36 | kgv | Note Edited: 0084087 | |
| 2019-09-04 17:35 | kgv | Target Version | 7.4.0 => 7.5.0 |
| 2020-09-21 10:18 | nds | Target Version | 7.5.0 => 7.6.0 |
| 2021-08-24 14:21 | kgv | Target Version | 7.6.0 => 7.7.0 |
| 2022-08-17 11:57 | kgv | Target Version | 7.7.0 => 7.8.0 |
| 2023-08-01 15:09 | dpasukhi | Target Version | 7.8.0 => Unscheduled |
| 2023-09-11 16:48 | eugeny.belousov_162739 | Assigned To | nds => mzernova |
| 2023-09-11 16:49 | eugeny.belousov_162739 | Priority | normal => high |
| 2023-09-11 16:49 | eugeny.belousov_162739 | Severity | minor => major |
| 2023-09-11 16:49 | eugeny.belousov_162739 | Target Version | Unscheduled => 7.8.0 |
