Display Tools and Options

To display or hide the points of a curve, click on or outside it.

To zoom in a region of a curve :

1. select the zoom tool ,

2. click and drag a region.

To fit the window to the object size, click on the rezise tool .

To display a grid in the editor, select the grid option.

The grid's step is adapted automatically to the window size and to the axis scale.

To change the editor's scale, click and drag the abscissa or ordinates axis.

The adjustment limits of the abscissa ruler depends on the value of the "decimals" input.

Spline are mathematical functions defined piecewise by polynomial interpolation. They are used for generating smoothed interpolated shapes , starting from a set of control points. Some functions in OM allow to generate spline curves starting from the points of a BPF or BPC.

To display the preview of a spline curve computed from the BPF/BPC, check the spline display option.

• The spline's resolution represents the number of points to compute in the spline preview.
• The spline's approximation degree determines the number of adjacent control points used for computing the spline curve points. Higher values produce smoother curves.

To modify the spline resolution or degree :

1. click on the "Degree" or " Resolution" frames

2. scroll the mouse up or down to change the value.