Fill-in Surfaces. A fill in surfaces made from a composite curve or a group of wireframe

5. Fill-in Surfaces.

A fill in surfaces made from a composite curve or a group of wireframe.

Pump Project Example….continued

Using the pump example we can make a flat base for the extruded side.

·  Open the model pump-project2.

·  Generate a composite curve around the base of the extrusion.

·  Make a Fill-in surface  using the selected composite curve.

The surface is created.

·  Select Fileè Save and then File è Close

My bottle Example…continued

A Fill in surface can also be made from several composite curves or wireframe. When a fill in surface is generated, the composite curve is used to create trimmed boundaries. By default when you see a surface you only see the trimmed portion.

·  Open the model my-bottle.

·  Delete the existing Fill-in surface at the top of the bottle.

·  Generate a composite curve around the base of the neck form.

·  Select the new curve in addition to the original composite curve defining the top of the bottle sidewalls.

A new fill in surface will be generated from these composite curves. Any number of composite curves can be used to generate a surface.

·  Select all of the surfaces and select Blank.

·  Make a Fill-in surface  using the 2 selected composite curves.

The surface has been generated.

·  Select Fileè Save and then File è Close

Cap Example

A composite curve does not have to be pre-made as it can be generated within the fill in surface form. The fill in surface form has other options that allow you to generate a tangent surface, rather than a flat one.

·  Select Create New Model.

·  Create a single line from 50 to  -20 0 20.

·  Select the Z plane.  Select the line. Select the wireframe view.

·  From the surface menu  select Surface of Revolution.

The angled surface has been made.

·  Open the Fill-in Surface dialogue box.

·  Select the Curve Creator option and trace a composite curve around the top of the surface.

·  Select the Options tab.

For a planar composite curve, the fill-in surface will be non-tangential by default.

·  Select Preview on the form.

The surface previewed is flat with no tangency to the surrounding surface.

·  Switch Tangency on and re-select Preview.

The surface previewed is tangential to the surrounding surface.

·  Apply and Accept the form.

·  Accept the fill in surface form.

·  Select the Shaded view.

The domed fill in surface can now be seen.

·  Select File è Close.