Parabolic Polygon

Right click Smooth Polygon to add a parabolic curve to your drawing.

PARABOLIC SPOLY (smooth polygon) draws a closed, curved shape defined by a series of node points called a frame. The curve draws through all the nodes. A smooth polygon must have at least 3 nodes. Each smooth polygon can be solid filled or crosshatched.

1. The prompt reads "1st point:". To select, use the crosshairs and left button or type numeric coordinates.

CC3 displays a rubber-band cursor, anchored at the 1st point.

1. The prompt reads "Next point:". Select the next point for another node.

CC3 displays a dynamic cursor showing both the curve and the frame.

2. The prompt reads "Next point:". Continue selecting nodes as needed. Right-click to end node selection.

CC3 draws the Parabolic SPoly by constructing the final frame segment from the last point back to the first point, automatically closing the smooth polygon. The command terminates.

Using frames

After the smooth polygon is drawn, CC3 normally hides the frame that you used to define the parabolic SPoly. To force display of frames on or off throughout your drawing, select TOGGLE FRAMES (Specs > Toggle Frames), or press CTRL F on the keyboard.

To reshape a parabolic smooth polygon (move nodes in relation to others):

Use STRETCH (Edit > Resize > Stretch) or DYNAMIC EDIT ().

To insert a gap in an existing parabolic smooth polygon, creating a parabolic spline:

Use BREAK ().

To select a fill pattern for new smooth polygons:

Use FILL STYLE ().

To change the fill pattern of existing smooth polygons

Use CHANGE-FILL STYLE (bmc CHANGEFS.BMP).

To convert a smooth polygon to another path-like entity

You can use EDIT to convert a smooth polygon into a path, polygon or smooth path by changing the Options and Smoothing settings on the dialog box.

Text equivalent: PSPOLY