Reshaping NURBS Surfaces

The 3D Reshape tool, located on the 3D Modeling tool set, can be used to manipulate NURBS surface control points and to reshape NURBS surfaces. For example, a dome or bell-curve effect can be created by manipulating the vertices.

This tool can potentially create surfaces which cannot be further manipulated in the 3D Power Pack. See Surface Geometry Requirements.

 

To reshape a NURBS surface:

1.	Select the NURBS surface to reshape.

2.	Click the 3D Reshape tool from the 3D Modeling tool set.

Select the mode from the Tool bar.

 

Mode	Description
Move NURBS Surface Vertex	Changes the position of the selected vertex or vertices only
Move NURBS Surface U Vertices	Changes the position of all vertices in a row in the U direction
Move NURBS Surface V Vertices	Changes the position of all vertices in a row in the V direction
Working plane constrain	Moves the selected vertex or vertices on a working plane
X axis constrain	Moves the selected vertex or vertices along the X axis
Y axis constrain	Moves the selected vertex or vertices along the Y axis
Z axis constrain	Moves the selected vertex or vertices along the Z axis

To select one vertex or row of vertices, position the cursor over one of the NURBS surface vertices. When the cursor is over a vertex, the standard arrow cursor changes to an unfilled, four-way arrow.

To select several vertices at one time, click with the Shift key pressed or click and drag to create a marquee around the desired vertices.

If several vertices are selected, position the cursor over one of them.

3.	Click-drag the mouse to move the vertex or vertices.

4.	Release the mouse at the desired location.