Opening PACE

Editing curves using PACE from Lines is done in one of the following ways:

• Select the curves that you wish to edit from the tree in the Lines Curve Bar, then click the Right Mouse button on the tree and select the Patch and Curve Editor item from the popup menu:F

• Click the Patch and Curve Editor Tool button, , from the edit toolbar. Use the cursor to pick curves in a graphics window by clicking the Left Mouse button. When all the desired curves are selected, click the Right Mouse button to start the editor.

• Click the Patch and Curve Editor Tool button, , from the standard toolbar. This will given the option of editing the curves active at the end of the previous session.

It is a good strategy to work with related groups of curves, for example a number of adjacent sections. Editing curves in isolation increases the danger of producing sets of curves that whilst individually fair will not lie together in a fair surface. It may also be helpful to add other curves (such as boundaries) to give a sense of context and location, even if these curves are not going to be modified.

Curves that are enabled for editing in PACE are referred to as active curves. Other inactive curves can be displayed for visual purposes from the tree in PACE. Inactive curves can be made active and vice versa.

For additional information, see Patch and Curve Editor.