Mesh/Upload Model UI reference

Level of Detail

Mesh

Auto generate

Generates a new level of detail based upon the model you uploaded.

Method

Choose a method from the dropdown menu by which the lower level of detail is calculated:

• Triangle limit: Enter the maximum number of triangles for the model at the selected level of detail. This number must not exceed the number of triangles in the LOD above it.
• Error threshold: How does this work?

Build Operator

Selects the method used for incrementally reducing the geometry while building the multiresolution hierarchy. Need a higher-level explanation with less jargon.

• Edge Collapse: Merges two vertices currently connected by an edge. Both vertices are replace by a new, unified vertex, which is chosen to minimize error.
• Half Edge Collapse: Merges two vertices currently connected by an edge. One of the two vertices is merged into the other, which remains (essentially) unchanged.

Why would I choose one of these over the other?

Queue Mode

Changes the order in which vertices are chosen to be collapsed.

• Greedy: Recalculates the priority values for each neighboring edge after each simplification operation.
• Lazy: Marks the priority values of each neighboring edge as "dirty" after each simplification operation. Recomputation of costs is only done on required edges. What does "dirty" mean?
• Independent: This method performs non-overlapping sets of operations on the input geometry, resulting in hierarchies of logarithmic height. Need a higher-level explanation with less jargon.

Why would I choose one of these over the others?

Border Mode

Changes the handling of vertices on a geometric border; these are vertices without a full ring of triangles around them.

• Unlock: The default behavior, does not treat geometric border vertices specially.
• Lock: Prevents any modification to or removal of border vertices.

Under what circumstances would I choose one of these over the other?

Share Tolerance

This floating point parameter is intended to compensate for small floating point errors present in your data set. It controls the amount of distance between two vertices before they are considered coincident. Try increasing this number if cracks appear in your object during simplification.

Crease Angle

The Crease Angle adjusts the smoothness of the model. Increase this value to soften the hard, "faceted" look of models with relatively few vertices.