How to change the scale for box defined tilesets?

[mholt...@gmail.com]

1. A concise explanation of the problem you're experiencing.

I have a tileset which is defined with a box as boundingVolume. The tiles are displayed on the right place.

I want to use Matrix4.setScale() to update the scale of a tileset.

Using the code as shown in section 2 makes the tileset to disapper from the view area completely.

How can I apply a valid vertical exaggeration to the matrix of this tileset?

2. A minimal code example. If you've found a bug, this helps us reproduce and repair it.

Matrix4.setScale(

tileset.root.transform,

new Cartesian3(1, 1, scale),

tileset.root.transform

);

The default transform matrix here is:

Matrix4 {0: 1, 1: 0, 2: 0, 3: 0, 4: 0, 5: 1, 6: 0, 7: 0, 8: 0, 9: 0, 10: 1, 11: 0, 12: 0, 13: 0, 14: 0, 15: 1}

Setting the scale value to e.g. 1.9 this will be changed by the code above to:

Matrix4 {0: 1, 1: 0, 2: 0, 3: 0, 4: 0, 5: 1, 6: 0, 7: 0, 8: 0, 9: 0, 10: 1.9, 11: 0, 12: 0, 13: 0, 14: 0, 15: 1}

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

Update the scale of a tileset which contains a geoligical layer to apply vertical exaggeration.

4. The Cesium version you're using, your operating system and browser.

Cesium 1.67 & current Google Chrome