Hi,
As per my understanding, you would like to know why you are able to pick ‘IndexedFaceSet’ using ‘LinePickSensor’, but not ‘ElevationGrid’ in Simulink 3d animation.
‘LinePickSensor’ uses sets of lines that detect the distance to the colliding geometries. It may not work properly with ‘ElevationGrid’ objects because ‘ElevationGrid’ objects are defined by a grid of heights, rather than a set of surface faces. The ‘LinePickSensor’ may not be able to detect intersection with an ‘ElevationGrid’ object, or it may detect the intersection with the wrong point on the grid.
One possible solution is to use a different type of sensor that is better suited for ‘ElevationGrid’ objects, such as the ‘PointPickSensor’ or ‘PrimitivePickSensor’.
For further information, please refer to the below link:
Hope this helps!
Regards,
Rasmita
