The point-to-shape visibility calculations get the elevation values at different points on the map from an ALcdTerrainElevationProvider.

The configuration file of the add-on allows you to switch between two different implementations:

  • A fast, but less accurate elevation provider: the fast elevation provider uses the elevation data that is already available in the view for painting. Because the data is already loaded, requesting the data is a very fast process.

    This elevation provider also has a disadvantage: if the models of certain layers contains more detailed elevation data than what is currently loaded in the view, this data is ignored.

  • A provider that queries the model for detailed elevation data. This results in more detailed elevation data at the performance cost of having to retrieve that data.

To switch between the two elevation providers, open the configuration file of the TLcyShapeVisibilityAddOn, and change the TLcyoint2ShapeVisibilityAddOn.useModelElevationData property.