# Simplygon API
We have done a lot of updates since Simplygon 7 but here a couple of important changes.
# Enum
All methods are now accepting and returning enums instead of uints.
# Aggregation
Two new settings objects added to the aggregation processor, GeometryCullingSettings, VertexWeightSettings.
# Reduction
Vertex weight settings are now in a separate settings object VertexWeightSettings
# Remeshing
Remeshing processor is now called RemeshingLegacyProcessor.
RemeshingSettings is now called RemeshingLegacySettings.
The GeometryCullingSettings settings object added.
# ShadowMeshProcessor
ShadowMeshProcessor is retired and removed.
# Material casting
VertexColorBaker is replaced by the VertexColorCaster.