Fit on Cloud

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This command is used to fit a CAD Surface on a point cloud.

Fitting means that control points are moved in order to best fit the cloud.
The fitting is also dependent of the control point number: if you have 3 controls points along U and V direction, you cannot correctly fit your surface on a cloud having many different "curvature" areas.

Select the CAD surface(s) to fit and the cloud you want to use.

You can select one or several surfaces before launching the command

Note

The surface must be "close to" the cloud in order to have a good fitting.

Some surfaces can't be fitted on cloud:

  • The restricted surfaces

  • Closed surface (such as torus, cylinder, sphere)

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  1. Check Constraint borders if you want to not modify any edges of the input surfaces. Else, you allow modifying all edges.

  2. Click Preview if you want to see the result. You can see the deformation of the face inside the 3D scene. You can also see the Maximum distance and Standard deviation between the face and the mesh.

  3. Click OK to validate and exit the command, Cancel to retrieve the original surface.

Note

In this command, the cloud is not modified, only the surface is modified.

Note

If possible, choose the Fit on Mesh command because the result will be better and faster as:

  • we use the normal vector of the mesh to fit the surface,

  • the mesh is most often less noisy than a cloud.

Note

In some cases, the algorithm may fail due to overconstrained fitting. Try to disable Constraint borders option.