Modify
CurveControl Points
The Curve through Control Points command provides an environment within which you can create and modify curves by governing their control points.
In the Mode drop-down list you can select the type of action to perform:
| Edit control points | Enables you to modify existing curves by handling their control points. There are a number of actions which can be easily performed on selected curves.
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| Add control points | Enables you to add control points to existing curves, thus making the curves more flexible. |
| New curve | Enables you to create new curves by specifying their control points. |
You need to select the curves to be modified for the Curves selector.
While this command is active, you can start the Curvature command (either from the menu bar or from the context menu). This will start the curvature analysis on the curve and the result will be displayed as a curvature plot on the curve being created/modified. You will also get the Curvature related options in the selection list.
| Internal Undo/Redo Every time you move a control point, it is considered as an achieved position of the curve. An internal Undo button (  ) is available on top of the selection list to undo the change (up to 10 times).As soon as you click the Undo button, your changes will be undone and the Redo button (  ) will show up on top of the selection list. If you click it, your former changes will be applied again.Virtual mirroring in previews When the virtual mirroring mode is enabled (Enable check box selected in the View- Advanced category of the Document Properties), the preview of the resulting curves /surfaces will be displayed as mirrored. The control points will not be mirrored, because only the true objects can be modified and/or constrained. Deselection It is not possible to deselect a single curve: within the editor the active objects are displayed as previews and thus not selectable. This is why you can only reset the entire selection and not the single “elements”. |
If the selected curve is not a NURBS, and the Ask before converting check box is selected, then you will be asked to convert it into a NURBS before applying the command. The conversion precision is controlled by the Tolerance: parameter.
You can analyze the curvature of the selected and resulting curves by using the Curvature command.
| Please note the command does not apply to associative curves created using the Curve through Interpolation Points (with the Associative Mode check box selected). |