1. A concise explanation of the problem you’re experiencing.
When we draw a viewshed, on terrain or on a building, then the viewshed cover do sense the tileset buildings but does not senses a cesium entity like an extruded polygon entity model. Thus it shows the hiding area with red color, for tileset feature but does not behaves in same way when an extruded entity is kept.
2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.
3. Context. Why do you need to do this? We might know a better way to accomplish your goal.
This would help a user to draw its own entities as an obstruction before a viewshed cover and find out the hiding areas and thus can make relative decisions.
4. The Cesium version you’re using, your operating system and browser.
We own Cesium 1.55 licensed version
