Create Geo node by pressing tab and typing geoĢ. Once you have a result, you can adjust all the options procedurally in attribute editorġ. – Keep original: If you want non-uniform decimation by painting weight, turn this onĥ. Decimate mesh by clicking Mesh – Reduce (option box) – Most of time you will get the error message saying that “Cleanup the object using Mesh -> Cleanup before reducing” when you work with lidar or photogrammetry in MayaĤ. Prepare mesh for decimation by clicking Mesh – Cleanup (option box) – Usually Lidar or Phtogremmetry models are already have triangulated facesģ. – We want to keep the original contour as much as possible so we need to work with the smallest unit that forms polygon and it’s triangle with three vertex. Triangulate faces by clicking Mesh – Triangulate Import the Mesh by clicking File – ImportĢ. – Decimate All: Creates progressive mesh with all models (sub tools) in this toolġ. – Decimate Current: Creates progressive mesh with currently selected model only
Apply decimation by clicking Decimate Current – However, even lower than 1%, the change of shape is very subtle and hard to notice so I recommend to go with lower value.Ĩ. – Output quality is vary from model to model but technically 0.01% – 40% is considered as low quality and you may notice change of shape and 40% to 100% is considered as high quality. – If you have precise target number, you can adjust Polys or Points instead of %. This % of polygons to be remained and the rest will be decimated. Choose the quality of the decimation to apply by adjusting % slide(0.01% – 100%). – Pre-process All: Creates progressive mesh with all models (sub tools) in this toolħ. – Pre-process Current: Creates progressive mesh with currently selected model only This creates meshes with decimate quality 100% to 0% in advance so that it can apply them later based on your target selection. Create progressive processed mesh by clicking Pre-process Current. Turning this on consumes 50% more memory but usually total calculation is very fast. – Keep UVs: If you have already done some texturing, this tried to optimize UV based on current UV’s seam. – Freeze borders: This tries to keep overall contour of the object by avoiding touching edges and vertices on the opening area of the object Turn on the Freeze borders and Keep UVs options Press Shift + F or click Line Fill icon to see wireframe if you needĥ. – Preserve Normal: this tries to to avoid face flipping and tries to preserve the original orientation of the surface.ģ. Weight 1 means all the edges on the boundary has same importance equally. – Preserve Boundary of the mesh: this tries to keep open faces (overall contour of the object) as much as it can. I recommend to use this option over inputing the target number manually. – Percentage reduction: it keeps this percentage of faces and reduces rest of it. This only useful when you have precise target number. – Target number of faces: this shows half of current face numbers as a default.
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