[FEATURE][3D] Billboard Rendering for Points (#31308)

[QGIS-feature-tracker]

Original commit: qgis/QGIS@b9978d5 by wonder-sk

• Add button to change billboard symbol.

• Add shaders for billboards.

• Add billboard material class.

• Add sample billboard image.

• Add dummy handler for billboard.

• Add billboard geometry class.

• First working version of 3D point as billboard.

• Make selected feature bigger.

• Use default symbol preview as billboard.

• Update billboard when changes the viewport size.

• Use QgsTerrainTextureImage for adding image to texture.

• Show better quality of billboard default symbol.

• Promote QgsSymbolButton not working.

• Add QgsSymbolButton properly.

• Add seTexture2DFromSymbol.

• Use default symbol

• [On Progress] Get symbol from the QgsSymbolButton.

• [On progress] failed to change the symbol

• Fix billboard fragment shader for macOS

• Better transparency handling.

• Use size from the symbol.

• Add set layer for 3d billboard symbol.

• Set billboard size from the symbol pixel size * 20

• Use size from the image.

• [Debug] set white symbol to success kid, it work when previous billboard is success kid.

• Use store and restore symbol from Nyall.

• Remove unrelated code.

• Apply random extent to fix the bug, from Martin.

• Remove add mesh entities for billboard.

• Hide material and transformation widget for billboard.

• Remove add scene entities for billboard.

• Add selected as parameter in drawPreviewIcon.

• Add QgsMarkerSymbol to store the symbol in billboard

• Put billboard symbol in point3dsymbol serialization.

• Add billboard height in the UI.

• Set height for billboard.

• Store billboard height separately. Perhaps better to use existing transform.

• Set height of billboard to TY.

• Flipped image for billboard symbol.

• Add helper function to set billboard function.

• Generate billboard transform from general transform.

• Use static dpi for context size.

• Remove debug message.

• Use Qgs3DRenderContext for selection color and dpi from QgsApplication.

• Remove unnecessary file and code.

• Remove commented iut code.

• Add documentation of new classes.

• Fix banned keywords.

• Add missing parameter's documentation.

• Address PR review.

• Use context from readXML.

• Remove one line function.

• Fix billboard size.

• Make some functions private, remove unused function.

• Use unique_ptr for the ownership.

• Use unique_ptr for default symbol to avoid memory leak.

• Add parent to texture2D.

• Fix documentation.

• Add copy constructor.

• Fix documentation.

• Remove documentation warning.

• Fix sip error.

• Add unit test for billboard rendering.

• Set ambient to not transparent for measurement line.

• Add dpi in the Qgs3DMapSetting

• Update billboard rendering unit test.

• Remove layer from 3d point widget since it's not supported yet.

• Addressing PR review from Martin.

• Attach dom directly for the billboard symbol.

• Remove unused constructor for point3dsymbol.

• Use stroke width ratio for solving big stroke width.

• Update unit test for rendering with some stroke color.

• Fix typo.

[lajunek]

@wonder-sk are the billboard forms a way to depict points in 3D when the others forms are not possible?

[lajunek]

@DelazJ I want to expand 'The Vector Properties Dialog' with the '3D View' feature (including the billboard shape) first and then add a description of the 3D Map View feature (still have to look for a suitable place)

[DelazJ]

@lajunek Go ahead, please. Just: I'm not sure of how the vector properties dialog is close to the billboard shape but fyi we have https://docs.qgis.org/testing/en/docs/user_manual/introduction/qgis_gui.html#d-map-view about the "3D map view" in which the billboard widget is embedded afaict.

[lajunek]

@havatv @DelazJ @SrNetoChan is there detailed information about the settings of the 3D View properties available?

[havatv]

@havatv @DelazJ @SrNetoChan is there detailed information about the settings of the 3D View properties available?

@lajunek I don't think there is anything in the docs, except for: https://docs.qgis.org/testing/en/docs/user_manual/introduction/qgis_gui.html#scene-configuration (which was updated in a PR that was merged yesterday).
We probably have to rely on the developers and the code. The developers often describe / announce new features on the web, so you may find useful information out there.

[lajunek]

@andreasneumann Hello Andreas I found https://www.youtube.com/watch?v=Nj014eOZaAc , can you give a short description about setting a sphere for usage of point layers in the 3D View tool? I didn't find the clue so far in the layer properties 3D View tab. Would like to make a screenshot. Thanks.

[lajunek]

@wonder-sk For documentation purposes I'd like to set up in QGIS 3.10 a small 3D scene (to prevent the 3D view tool from crashing) and place some point vectors defined by a billboard symbol on it. Can you give a recommendation which data I could use? I have the idea to use qgis_sample_data, SR_50M_alaska_nad.tif for elevation, but I'm stuck in setting this up for the 3D-view as I just created a flat scene in the 3D view tool. It would be nice answering my question as there is only small information about the 3D View tool in the internet.

[lajunek]

@wonder-sk when setting the "billboard height", does the size refer to the units of the chosen CRS in the QGIS project?