Modify MeshDecimate

The Decimate Mesh command enables you to reduce the number of triangles in the mesh without any significant changes in the object shape.

1. Select the mesh you would like to smooth.
   
   
   
   
2. If you want to use only a section of the mesh, select the Selection Only check box and subsequently select the mesh triangles to be included for decimation. You can also make a Window selection.
   
   Select the Selection through check box to select all the triangles in the selection Window area. Otherwise, by default only the visible triangles are selected.
   
   
3. Make the additional settings in the Decimate Mesh selection list:
   
   
   
   

   No. of Start Triangles	Represents the number of triangles in the mesh; this number is important if the No. of End Triangles is set.
   No. of End Triangles	Required final number of triangles in the resulting mesh as an absolute number. Following this strategy automatically generates the reduction percentage in the field below.
   End Triangles Percentage	Percent of the initial number of triangles. Following this strategy automatically generates the approximate number of end triangles in the field above.
   Max. error	Checking this box, the decimation process will preserve maximum deviation of the decimated mesh from the original one less than the value set in the emerging field; in this case the required final number of triangles may be not achieved due to the deviation limit.
   Preserve Boundaries	Checking this box, the operation will not affect the mesh boundaries
   Remove Skew Triangles	Checking this box, the procedure will try to suppress a formation of irregular skew triangles, though it may make the approximation quality worse.

   
   
4. Click the OK button to confirm the operation, or the Cancel button to abort.
   
   

   The original mesh (375.000 triangles)	The same mesh after decimation (50.000 triangles)