# Repair settings

Welding consists of merging vertices that are closer than a certain distance from each other. This is often used as a pre-processing step to make sure that the geometry is properly connected. Geometry information imported from file formats that do not use vertex indexing have to be welded or gaps between the triangles would be introduced when simplifying it. T-junction removal is also performed by the reducer processor as a pre-processing step. A T-junction is when a vertex is very close to an edge causing a small gap between the triangles. This is solved by splitting the edge at the projection of the vertex onto the edge and then then merging the two vertices.

The following figure shows the t-junction processing, before (left) and after (right).

T-junction

# Supported processors

  • Reduction processor

# Example

This example shows how to use the Reduction processor with repair settings.