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Profile Editor

When a point or segment is selected in the Cross-section View, Profile View displays plot of the current parameter for the selected object. For example, when a point is selected in cross-object, Profile View will show plot of the first coordinate against z. To change the parameter currently displayed in the Profile Editor, use background menu (right mouse button) or select another option from the Current Profile combo box on Profile Page of the Form View. This combo box is not available when there are no objects selected in Cross-section View or the selected object has no editable parameters,  like straight line, for example.

The Profile editor has common functionality of a 2D editor with the difference that modifications with the mouse or dialogs apply only to vertical direction. Horizontal changes can be made by modifying base knots and this change will apply to all profiles in the object.

The base knots  are shown at the top of the Profile Editor window. They are drawn with red ticks. To modify a base knot drag the tick with the mouse or edit the position using Axial Knots Editor available in Menu > Base > Modify. To add a new knot select Menu > Base > New knot command and click in the profile view at x position where you would like to put it. The knot's position can be adjusted precisely using the above dialog.

Another method to add a new knot is to set the cross position to the needed point and press "New knot" button on the Command Page of the form.

The blue vertical line in Profile View shows current cross position. It can be moved with the mouse. Precise cross position can be set by using correspondent edit box in the Form View. When cross position coincides with one of base knots, modifications in the Cross-section View apply to joints of 3D surface strips (See also Cross-section Editor). This is equivalent to selecting correspondent point in profile editor and modifying it.

Note that for the sake of saving screen space profile editor is not isometric, which means that the strip normally is either stretched or contracted in vertical direction. Just remember that actual segments are always either lines or arcs. The actual proportions can be observed in 3D View.