alignedAxis
The aligned axis is the direction vector that the billboard up vector points towards. The default is the zero vector, which means the billboard is aligned to the screen up vector. Note that only the zero vector (0,0,0) resets the alignment to screen up.
// Example 1.
// Have the billboard up vector point north
billboard.alignedAxis = Cartesian3.UNIT_Z;Content copied to clipboard
// Example 2.
// Have the billboard point east.
billboard.alignedAxis = Cartesian3.UNIT_Z;
billboard.rotation = -Cesium.Math.PI_OVER_TWO;Content copied to clipboard
// Example 3.
// Reset the aligned axis
billboard.alignedAxis = Cartesian3.ZERO;Content copied to clipboard