• Curve types:

• Degree box—Sets the curve degree.

◦ Plane collector—Displays the planar or surface reference for the curve.

▪ Offset—Sets a distance between a planar curve and its reference plane. This parameter becomes external to the Style feature.

◦ Type—Sets the type of radial plane.

▪ Value—Defines a radial plane value. This parameter becomes external to the Style feature.

◦ Symmetrical Curve check box—Creates a curve that is symmetric and continuous on both sides of a datum plane, for free and planar curves.

▪ Plane collector—Defines the symmetry plane for the symmetric curve.

◦ Type—Sets the soft point type.

▪ Length Ratio—Maintains the position of the soft point to the percentage of the length from the beginning of the curve to the point, relative to the total length of the curve.

▪ Length—Determines the distance from the beginning of the referenced curve to the point.

▪ Parameter—Maintains the position of the point by keeping its parameter along the curve constant.

▪ Offset from Plane—Determines the position of the point by intersecting the referenced curve with a plane at a given offset.

▪ Curve Intersection—Snaps the soft point to the intersection of two curves or two edges. Displays as an “x” in the graphics window.

▪ Lock to Point—Locks the soft point to a defining point on the reference curve, finding the closest defining point on the parent curve, typically an endpoint.

▪ Linked—Indicates that the point is a soft point, but that none of the above soft point types are applicable. This includes soft points on a surface or a plane and soft points to a datum point or vertex. For example, a curve point that is snapped to a surface is linked.

▪ Unlink—Disconnects the soft point from the parent geometry. The point becomes free and defined at the current location.

◦ Value—Creates an external a soft point value.

◦ X, Y, and Z—Sets the x-, y-, and z-coordinate values for the selected point.

▪ Relative check box—Toggles the Relative mode for the coordinates on and off.

◦ Drag—Sets a constraint for dragging a point with your mouse.

▪ Free—Sets unrestricted dragging for points.

▪ Horizontal/Vertical—Sets dragging a point horizontal or vertical from its original position.

▪ Normal—Sets dragging a point perpendicular to its original position.

◦ Extend—Sets curve extension type.

◦ First and Second—Sets a constraint type for the primary constraint from the First box, and in some cases, sets a secondary constraint type from the Second box:

▪ Normal to Edge/Curve—Sets secondary constraint for free curves when the primary constraint is Surface Tangent or Surface Curvature, and primary constraint for COSs.

▪ Along U—Sets secondary constraint for free curves when the primary constraint is Surface Tangent or Surface Curvature, and primary constraint for COSs.

▪ Along V—Sets secondary constraint for free curves when the primary constraint is Surface Tangent or Surface Curvature, and primary constraint for COSs.

◦ Fix Length—Fixes tangent length proportionally. Define one or more of the following parameters:

▪ Length—Sets the tangent length.

▪ Angle—Sets the angle of the tangent in respect to a reference plane.

▪ Elevation—Sets tangent elevation angle from a reference plane.

◦ Relax Length—Relaxes tangent length proportionally.

◦ Plane collector—Displays a reference plane for the tangent.

◦ Drag—Sets a constraint for dragging a tangent with your mouse:

◦ Proportional Update check box—Moves the curve free points in proportion to the soft points to maintain the curve shape.

• Curve Collector—Activates a curve collector.

• Tangent Plane Collector—For symmetric curves, activates the collector for the plane across which the two sides of a curve are symmetric.

• Clear—Clears the currently selected collector.

• Symmetrical Curve—Creates a curve that is symmetric and continuous on both sides of a datum plane, for free and planar curves.

• Deselect All Points—Deselects any currently selected points.

• Free—Changes a curve to a free curve type.

• Planar—Changes a curve to a planar curve type.

• COS—Changes a curve to a curve on surface curve type.

• Show Only—Hides the display of all the Style entities except the selected entities.

• Show All—Displays all the previously hidden features or Style entities.

• Add Point—Adds a free point to the curve.

• Add Midpoint—Adds a free point at the curve midpoint.

• Planar on Endpoints—Fixes curve endpoints to a plane.

• Flip Curve Direction—Reverses the direction of the curve points of a symmetrical curve for free, planar, and COS curves.

• Delete Curve—Deletes the curve.

• Delete—Deletes the soft point.

• Split—Splits a curve into two curves. Available for internal points, not for endpoints.

• Extend to Boundary—Extends a COS to its surface boundary. Relevant to COS curve end points.

• Pick Soft Point—Opens the Pick Soft Point dialog box so you can select a soft point reference.

• Combine—Combines two curves into one curve. Available on endpoints that connect two curves.

• Flip Soft Point—Flips the following soft point parameters under these conditions:

◦ Flips the soft point parameter to the opposite end of the reference on which it is located, when the soft point is of the type Length Ratio, Length, or Parameter.

◦ Flips the direction of the soft point tangent, when the first constraint is G1-tangent, G2-curvature, or G3-acceleration.

• Length Ratio—Maintains the position of the soft point to the percentage of the length from the beginning of the curve to the point, relative to the total length of the curve.

• Length—Determines the distance from the beginning of the referenced curve to the point.

• Parameter—Maintains the position of the point by keeping its parameter along the curve constant.

• Offset from Plane—Determines the position of the point by intersecting the referenced curve with a plane at a given offset.

• Curve Intersection—Snaps the soft point to the intersection of two curves or two edges. Displays as an “x” in the graphics window.

• Lock to Point—Locks the soft point to a defining point on the reference curve, finding the closest defining point on the parent curve, typically an endpoint.

• Linked—Indicates that the point is a soft point, but that none of the above soft point types are applicable. This includes soft points on a surface or a plane and soft points to a datum point or vertex. For example, a curve point that is snapped to a surface is linked.

• Unlink—Disconnects the soft point from the parent geometry. The point becomes free and defined at the current location.