3d polygon

[samareshdasglobal]

Hello,
I am trying to render polygons with altitude in TerriaMap. I have prepared a GeoJSON with a height property. During debugging, I noticed that the following code is executed, but it does not draw polygons in 3D shape. Using the same GeoJSON data, I am able to draw 3D polygons using CesiumJS.

entity.polygon.closeTop = new ConstantProperty(true);
entity.polygon.extrudedHeight = properties[this.heightProperty];
entity.polygon.height = properties[this.heightProperty];
entity.polygon.heightReference = new ConstantProperty(
HeightReference.CLAMP_TO_GROUND
);
entity.polygon.extrudedHeightReference = new ConstantProperty(
HeightReference.RELATIVE_TO_GROUND
);

[samareshdasglobal]

Hello,
After some investigation and debugging, I noticed that 3D polygon drawing is implemented in TerriaJS. The only problem is that I couldn't find a way to set this.heightProperty dynamically.

[na9da]

Hi @samareshdasglobal - you could try setting the heightProperty in the catalog definition.

Example:

{
      "type": "geojson",
      "url": "https://data.melbourne.vic.gov.au/api/v2/catalog/datasets/2023-building-footprints/exports/geojson",
      "name": "Extruded buildings",
      "heightProperty": "structure_extrusion"
}

Here is a link to see it in action
(warning the dataset is huge so your browser might hang a bit while rendering).