GuiCommand: Name: Mesh SegmentationBestFit MenuLocation: Meshes , Create mesh segments from best-fit surfaces... Workbenches: Mesh_Workbench SeeAlso: Mesh_Segmentation

Mesh SegmentationBestFit

Description

The Mesh SegmentationBestFit command creates separate mesh segments for specified surface types of a mesh object. The command can also identify their parameters which can be useful when re-engineering a mesh object.

Usage

1. If you plan to identify the parameters of a surface type, note that the command uses the color red to mark the faces selected for this option. To see them properly:

   • The Display Mode of the mesh object ideally should be {{Value|Flat lines}}, but should at least show faces. If necessary use the Std DrawStyle command to override this property.
   • The Shape Color of the mesh object should not be red.

2. Select a single mesh object.

3. There are several ways to invoke the command:

   • Press the Create mesh segments from best-fit surfaces... button.
   • Select the Meshes → Create mesh segments from best-fit surfaces... option from the menu.

4. The Mesh segmentation task panel opens.

5. Optionally press one of the Parameters... buttons to identify the parameters of a surface:

   • The Surface fit dialog box opens.
   • Select one or more faces belonging to the surface:
     • Press the Region button and while holding down the left mouse button draw a region, a closed spline, in the 3D view. Faces that (partially) fall inside the region will be selected.
     • Press the Triangle button to select individual faces.
     • Optionally press the Clear button to clear the selection.
   • Press the Compute button to calculate the parameters.
   • Press the OK or Cancel button to close the dialog box.

6. Select the surface type(s) you wish to create mesh segments for:

   **Plane**

   • Cylinder

   • Sphere

7. Specify the Tolerance values.

8. Specify the Minimum number of faces values.

9. Press the OK button.

10. The command will create a group containing separate mesh objects, each a segment of the original mesh object.

11. If the created group is empty try using the command again with modified settings.

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