Curve

Sub-function

Description

Intersection

Creates a curve or curves by intersection between two elements or planes.

Accept the prompt to select location, surface, panel, grid, or plane and then select the intersecting surfaces, panels, grids, or planes.

Repetition Terms:

Curves can also be created using repetition terms. Syntax for repetition is <start> <step> <end> <optional offset> as illustrated below:

Points

Creates a knuckle or spline curve from selected points.

Prerequisite for this function is that necessary points are created either in a point world (in CRM) or locally in another element for example in a panel.

Accept the prompt to select points in order. By default, the function selects CRM points and creates a CRM curve. If instead a local curve is requested the mode is changed by using the drop-down function Curve at panel. Once accepted, a spline curve is created. If a polyline curve is requested, then the mode is changed by the drop-down function Polyline curve that must be selected prior to accepting the selected points.

General Cylinder

Creates a general cylinder curve from a number of points selected in order. Select location surface and then select points in order. Choose projection direction. By default, the view direction is used. To change it key in the projection vector, or rotate the view with the scroll-button on the mouse or use the Power Compass visible in the canvas.

Once accepted, the general cylinder curve is projected and created as a curve in the selected surface.

Offset

Creates an offset curve from the selected curve with given offset value and direction.

At start of the function there is a prompt to select a curve to give an offset value (with sign to get direction). A new curve is created referencing the selected curve.

Equal Girth

Creates an equal girth length curve from a selected curve.

Select a curve created in a surface and give an offset value (with sign to get direction). A new curve is created referencing the selected curve.

Internal Curve

Creates a curve from a curve stored directly in a surface, such as a boundary curve.

Prior to using this function, the internal curves must be made available in the canvas. First, select the surface to make it the current element in the database tree browser. The internal curves are stored below the element SRFCGR. Drag this element into the canvas.

The internal curves can now be selected, and the function Internal Curve is ready to use. For better visibility, you can press the F11 key to turn off shading in the canvas.

Select internal curves and curves are created when accepted.