Reorder Helix elements for Isolate Geometry Mode to display isolated geometry #11163
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aparajit-pratap
commented
Oct 5, 2020
Comment on lines
531
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547
| if (Element3DDictionary == null) | ||
| { | ||
| sceneItems = new ObservableElement3DCollection(); | ||
| return; | ||
| } | ||
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| var values = Element3DDictionary.Values.ToList(); | ||
| if (Camera != null) | ||
| { | ||
| values.Sort(new Element3DComparer(Camera.Position)); | ||
| } | ||
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| if (sceneItems == null) | ||
| sceneItems = new ObservableElement3DCollection(); | ||
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| sceneItems.Clear(); | ||
| sceneItems.AddRange(values); |
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This logic has been lifted off of UpdateSceneItems, however, UpdateSceneItems seems to be doing some extra work like cycling through the list of elements and updating vertices, triangles, and colors, which I'm not sure if that is necessary in this case. Skipping that saves some time.
mjkkirschner
reviewed
Oct 6, 2020
mjkkirschner
reviewed
Oct 6, 2020
| var values = Element3DDictionary.Values.ToList(); | ||
| if (Camera != null) | ||
| { | ||
| values.Sort(new Element3DComparer(Camera.Position)); |
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Why does this need to happen every time the selection changes? Couldn't it be done once when the isolation mode is enabled?
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Tried that. Doesn't work for some reason.
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nice! @aparajit-pratap would you also mind adding an image comparison test for this so it does not regress again? I added a few for the mesh mesh case in the last pr. |
mjkkirschner
approved these changes
Oct 6, 2020
aparajit-pratap
changed the title
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Purpose
https://jira.autodesk.com/browse/DYN-3130
This attempts to fix a regression with Isolate Selected Geometry feature where point-line geometry when selected does not appear when hidden by mesh geometry (solids and surfaces). The reason for this is that the geometry needs to be reordered so that selected geometries will have higher precedence and rendered closer to the camera compared to unselected geometries.
Caveat: This comes with some performance penalty when rendering selected geometry in isolated mode.
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