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Notes for playing around with the Cesium Unreal Plugin.

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Test Cesium Plugin for UE45 Preview 2

This documents issues with the Cesium Plugin relased for the UE5 preview here.

Create Project

The first issue encountered is when creating and empty project as Games->Blank without Starter Content it automatically adds a landscape which can not just be deleted.

Solutions ( Closed)

Use one of the other templates like First Person and delete the extras when the new project opens.

UE5 Cesium Plugin Warning and Error Suppression

This warning / errors may be useful but they spam the logs so I am going to update them for my plugin.

LogCesium: Warning: [2022-01-18 08:24:44.620] [warning] [Batched3DModelContent.cpp:130] This b3dm header is using the legacy format[batchLength][batchTableByteLength]. The new format is[featureTableJsonByteLength][featureTableBinaryByteLength][batchTableJsonByteLength][batchTableBinaryByteLength] from https://github.com/CesiumGS/3d-tiles/tree/master/specification/TileFormats/Batched3DModel.

LogCesium: Error: [2022-01-18 08:24:44.620] [error] [GltfContent.cpp:37] Failed to load binary glTF from https://jason.goffeney:[email protected]/3dtiles/vricon_tilesets/3563213151/10/513/408.b3dm:
- Only binary glTF version 2 is supported, found version 1

LogCesium: Error: [2022-01-18 08:24:44.470] [error] [Tileset.cpp:817] Tile contained an unknown refine value: replace

Create mesh from raster

Creating an initial mesh from a raster file.

Using Vister code for example:

GLTF to Raster

Currently able to load the GLTF / GLB and render using a glOrtho based on the model bounds and essentially a passthrough for the shaders using the original POSITION vertex data.

Currently the test GLB file was generated as Geotiff->Unreal->mesh->FBX->Blender->GLB.

Issues:

Test GLB
- The mesh was generated by script within Unreal from Lat/Lon raster data and converted to meters which removes the base grid. It is better to use projected data with equal 1 cell spacing.
- When exporting from blender it creates Camera and Light nodes in the GLB which have their own transforms. It is better to just ignore the node transforms in favor of just working with the data. It makes the shaders very simple and setting up glOrtho easy by just using the GLTF POSITION vertex data.

To Dos:

Create a test mesh to try to get as close to a 1 to 1 raster input and output in the pipeline.
Try with terracotta data
- It is in a format that already follows the curvature of the earth.

Enable Switchable Camera

Switch camera between standard pawn and top down.

Create GDAL Plugin

GDAL Plugin is working in project GDALBlank3. The example pawn is loaded in level NewMap.

Having trouble packaging the plugin. For reasons unknown it is including Cesium although this project does not have Cesium loaded.

UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/CesiumSubLevel.h(81) : LogCompile: Error: An explicit Category specifier is required for any property exposed to the editor or Blueprints in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/Cesium3DTileset.h(78) : LogCompile: Error: An explicit Category specifier is required for any property exposed to the editor or Blueprints in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/Cesium3DTileset.h(83) : LogCompile: Error: An explicit Category specifier is required for Blueprint accessible functions in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/Cesium3DTileset.h(87) : LogCompile: Error: An explicit Category specifier is required for Blueprint accessible functions in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/Cesium3DTileset.h(133) : LogCompile: Error: An explicit Category specifier is required for any property exposed to the editor or Blueprints in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/Cesium3DTileset.h(138) : LogCompile: Error: An explicit Category specifier is required for Blueprint accessible functions in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/Cesium3DTileset.h(142) : LogCompile: Error: An explicit Category specifier is required for Blueprint accessible functions in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/CesiumGlobeAnchorComponent.h(53) : LogCompile: Error: An explicit Category specifier is required for any property exposed to the editor or Blueprints in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/CesiumGlobeAnchorComponent.h(58) : LogCompile: Error: An explicit Category specifier is required for Blueprint accessible functions in an Engine module.
UATHelper: Package Plugin Task (Windows):   C:/Program Files/Epic Games/UE_4.26/Engine/Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/CesiumGlobeAnchorComponent.h(62) : LogCompile: Error: An explicit Category specifier is required for Blueprint accessible functions in an Engine module.

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