Specifies the options you want for controlling the shape at the ends of the feature. For example, when you are creating a BlueSurf feature that must blend smoothly with adjacent surfaces, you can set the Normal to Section option to ensure a smooth blend between the existing surfaces.

The following options are available, depending on the geometry you select for the cross section or guide curve:

• Natural—There are no constraining condition enforced at the end sections. This is the default end condition and is valid for any cross section type.

  

• Normal to Section—End cross sections that are planar support a normal to section end condition. You can control the length of the vector using the variable table or by modifying the vector handle in the graphic window. In this example, the resultant surface illustrates the graphic handles (1) that you can use to modify the surface.

  

• Parallel to Section—End cross sections that are planar support a parallel to section end condition. You can control the length of the vector using the variable table or by modifying the vector handle in the graphic window. To see the effect of this setting, compare the following illustration of Parallel to Section with the Normal to Section example.

  

• Tangent Interior—End cross sections defined using part edges and construction surfaces support a tangent interior condition. Tangent Interior forces the surface to be tangent to the inside faces. For example, the surface below has the Tangent Continuous option applied to cross section (1), and the Tangent Interior option applied to cross section (2). The resulting surface is constructed tangent to the planar face (3).

  

• Tangent Continuous—End cross sections defined using part edges and construction curves support a tangent condition. The tangent vector for the surface is determined by the adjacent surfaces. You can control the length of the vector using the variable table or by modifying the vector handle in the graphic window.

  

• Curvature Continuous—End cross sections defined using part edges and construction surfaces support a curvature continuous condition. The tangent vector for the surface is determined by the adjacent surfaces. You can control the length of the vector using the variable table or by modifying the vector handle in the graphic window.

  

For more information and illustrations which show you how you can control the surface shape at the ends of BlueSurf and lofted features, see the End Conditions section in the Constructing Lofted Features (ordered) or Constructing Lofted Features (synchronous) Help topics.

Start Section

Specifies the tangency control option you want for the first cross section.

End Section

Specifies the tangency control option you want for the last cross section.

Edge Guide 1

Specifies the tangency control option you want for the first guide curve. The options available for defining guide curve tangency conditions depend on the type of element you select for the guide curve. For example, if you want to be able to control the tangency of the BlueSurf feature with respect to an adjacent surface, use an edge on the surface as the guide curve rather than, for example, the sketch that was used to construct the adjacent surface.

Edge Guide 2

Specifies the tangency control option you want for the last guide curve.  The options available for defining guide curve tangency conditions depend on the type of element you select for the guide curve. For example, if you want to be able to control the tangency of the BlueSurf feature with respect to an adjacent surface, use an edge on the surface as the guide curve rather than, for example, the sketch that was used to construct the adjacent surface.

Specifies the end capping options you want. This option is available only when the cross section profiles are closed.

Open Ends

Specifies that no planar end caps are added to the feature.

Close Ends

Specifies that planar end caps are added to the feature to create a enclosed volume.

Controls whether or not the feature closes on itself.

Open

Specifies that the feature begins with the first cross section and ends with the last cross section. The feature does not close on itself.

Closed

Specifies that the surface will close on itself. When you set this option, the first cross section is also used for the last cross section.

Specifies how a cross section and a guide curve are connected. These options only apply to new sketches you add using the Insert sketch button on the command bar.

Use Pierce Points

Specifies that a connect relationship is used to connect the cross section and guide curve where they intersect. The position of the connect relationship is calculated using the Pierce Point option on the IntelliSketch dialog box. The Use Pierce Points option is typically used when constructing engineered surfaces, such as the surfaces for a fan or turbine blade, where engineering data or dimension-driven criteria must be maintained.

Use BlueDots

Specifies that a BlueDot is used to connect the cross section and guide curve where they intersect. When you connect a cross section and a guide curve with a BlueDot , you can use the BlueDot as a handle to dynamically modify the shape of the cross section and guide curve. The Use BlueDots option is typically used when constructing esthetic surfaces, such as the surfaces for consumer electronics product, where a more free-form approach to surface design is desired.

Note:

The Use BlueDots option is available only in the ordered modeling environment. The BlueDots functionality is not available in the synchronous environment.

Allows you to define a tolerance value for sketches you insert. The tolerance value you specify is used to control the complexity of the curve that is created.

Tolerance

Specifies the tolerance value you want to use.

Vertex mapping is a technique to help create flow between section vertices; you can map a vertex or point on one cross section to a vertex or point on another cross section. Vertex mapping is useful for controlling or eliminating twists and discontinuities in a surface. If there is a vertex count mismatch between sections, equally spaced vertices are used on each section.

You can add vertex maps while creating a BlueSurf or by editing an existing BlueSurf.

Notice in the first image below that section (A) has four vertices and section (B) has three vertices. The BlueSurf command automatically inserts vertices equally spaced on each section. Notice the surface flow is not smooth.

The result of vertex mapping.

Map Sets

Lists the sets of mapped vertices you have defined. You can add vertex map sets to create a smooth surface flow; to add a new set of mapped vertices, click the Add button, then click a point on each cross section curve.

Add

Allows you to add a new mapped vertex set.

Delete

Allows you to add a delete an existing mapped vertex set.

Allows you to reorder cross sections that were defined out-of-sequence. This option is useful when you modify an existing feature by adding a new cross section. You cannot use the reordering capability to create a feature that intersects itself.

To reorder a cross section, select the cross section in the list, then click the Up or Down buttons to move the cross section entry in the list.