Rotate a model to face camera

CesiumJS
1

Hi,

How would I go about rotate a model to face the camera at all times?

Thanks for the help in advance.

Thanks,
Josh

2

Solved!

const direction = Cesium.Cartesian3.subtract(camPos, modelPos, new Cesium.Cartesian3())
      Cesium.Cartesian3.normalize(direction, direction)
      const rotationMatrix = Cesium.Transforms.rotationMatrixFromPositionVelocity(modelPos, direction)
      const rot90 = Cesium.Matrix3.fromRotationY(Cesium.Math.toRadians(90))
      Cesium.Matrix3.multiply(rotationMatrix, rot90, model.modelMatrix)
3

This is exactly what I would need to do, but I don’t know how to use that code snippet. Could you give more context?

For example applied to the following example: Cesium Sandcastle. In my particular case, I would like the plane to remains horizontal, but with the cockpit always pointed the same way regardless of the camera orientation.

It would help me immensely.