Unable to find a way to colour or select the entities that are contained within a polygon. There seems to be a Cesium.pointInsideTriangle but this doesn't cater for a polygon
To highlight all elements of 3D buildings that are contained within a defined building area(polygon). Manual selection of all building components not a scalable solution
Have you tried using the 3D Tiles Styling Language (like in this example https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=3D%20Tiles%20Feature%20Styling.html ) ?
You could use the long/lat properties of your buildings to color anything within a certain area.
I have seen it but can’t see how to check if the entity is within a polygon
Have you tried using the 3D Tiles Styling Language (like in this example https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=3D%20Tiles%20Feature%20Styling.html ) ?
You could use the long/lat properties of your buildings to color anything within a certain area.
Unable to find a way to colour or select the entities that are contained within a polygon. There seems to be a Cesium.pointInsideTriangle but this doesn’t cater for a polygon
To highlight all elements of 3D buildings that are contained within a defined building area(polygon). Manual selection of all building components not a scalable solution
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I was suggesting you could use the lat/long conditions to approximate the bounds of your polygon, but it looks like there’s a better way. Note that you can use a custom expression for the color as described here:
https://cesiumjs.org/Cesium/Build/Documentation/Cesium3DTileStyle.html#color
So you could run your own bounds checking algorithm or use something like Turf (http://turfjs.org/) to do it.
If the end goal is only to color the buildings within a polygon or the portions of buildings within a polygon, you can also use Classification Polygons. See here: https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=Classification%20Types.html