Contour Parameters of Fill Hole

After selecting the contour, you need to configure the parameters for creating the surface.

There are four parameters available - Method, Shape, Smoothness, and Auxiliary Condition.

Method

With this parameter, you can adjust the filling method of the area.

This parameter has two options Patch and Extend.

Patch enables you to fill an area in the classic way, leaving a "trail" of filling the area in the form of edges.

This option is the main method.

Extend is a special case and enables you to "tighten" the surface.

With this method, the selection of the remaining parameters becomes unavailable.

Shape

With this parameter, you can adjust the shape of the created surface.

This parameter has four options - Smooth, Non-smooth, Preferable Plane, Plane.

With the Smooth option, you can fill the area using the boundary condition G0, G1 or G2 for each boundary edge, and also control the overall smoothness for the contour.

The Preferable Plane option can also control the overall smoothness, but you cannot set boundary conditions for each edge. The system first tries to fill the selected area with a plane, and in case of failure, a spline surface. In this case, the result will be similar to the Smooth option, but it will not be possible to set edge conditions for the edges.

With the Non-smooth option, the hole is filled, ignoring all smoothness requirements, using an analytical solution where possible.

With the Plane option, you can only fill the body with a flat surface. All smoothness requirements are not available for this option.

Auxiliary Condition

With the help of auxiliary conditions, you can specify the behavior of the created surface.

Auxiliary condition Points enables you to create a surface passing through a set of points, belonging or not belonging to the contour.

A Normal can be specified for each point. After selecting the appropriate option, a menu for specifying vectors will appear, similar to the Loft operation. The only difference is that the length of the vector is taken from the unit length.

Auxiliary condition Vertex enables you to select one point, which belongs or does not belong to the contour, and create a surface relative to it. Under this condition, the type of Clamp can be selected. Clamp type accepts three values - No, Auto, Normal. When the No mode is selected, the surface is created without additional smoothness conditions.

If the Normal mode is selected, the system works in the same way as the auxiliary condition Points using the normal.

Auto mode allows the system to independently determine the required clamp.

Auxiliary condition Edges enables you to set guides for the surface being created. The principle of operation is similar to the guides in the Loft operation. If the selected guides are longer than the boundaries of the contour, then the contour of the guide that is inside the contour will be used when creating the surface.

For guides, you can also select Composition.

If necessary, guides can be imprinted on a face, that is, split a face along a guide.

In this figure, the selected shape is Non-Smooth, because Smooth shape can be only if the edges meet the condition of tangency to the contour body.

With the auxiliary condition Faces, additional faces are specified that will be converted to a filling surface. If the faces are outside the area to be filled, then you can specify the source surface LCS and the face LCS, with which the system can correctly determine where the area is filled. You can fill an area along the edges of an additional surface with a trim by contour ...

... and trim by faces. In this case, you can fill in multiple contours.

With the auxiliary condition Surface, the contour is projected onto the auxiliary surface along the normal. The resulting projection is a bounding path on the selected surface. The surface obtained inside the contour is the result of the operation. A workplane/surface, 3D profile, face, edge, or operation can be selected as an additional surface. If you merge with the source body, then the result must be on the source body.

For toroidal and spherical surfaces, face refinement may be required. For this, an auxiliary point is set, thanks to which the closest face to this point is selected.