To display or hide the points of a curve, click on or outside it.
To display points only, unselect this option.
To display a grid in the editor, select the
The grid's step is adapted automatically to the window size and to the axis scale.
p to show or hide the indexes of the points. The indexes are not ordered "chronologically", but follow the abscissa axis order.
BPC editors have an additional option : the
Closed BPC option.
This option allows to connect the first and last point of the curve, in order to get a polyhedron.
To browse the editor's surface :
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.
To zoom in a region of a curve :
select the zoom tool ,
click and drag a region.
To fit the editor's scale to the object size, click on the rezise tool .
A picture can be associated with the BPF or BPC editors and displayed as background. To select a background picture :
Ctrl / right click and and select
Background Picture in the contextual menu
Click on the picyre icon
Select a picture via the dialogue window
To delete the picture, click on the small cross icon.
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.
To modify the spline resolution or degree :
click on the "Degree" or " Resolution" frames
scroll the mouse up or down to change the value.