Extended splines are enhancements to the original spline set.
For procedures on creating extended splines, see Spline Primitives.
Use WRectangle to create closed shapes from two concentric rectangles. Each rectangle is made of four vertices. The WRectangle is similar to the Donut tool except it uses rectangles instead of circles.
Use Channel to create a closed “C” shaped spline. You have the option to specify the interior and exterior corners between the vertical web and horizontal legs of the section.
Use Angle to create a closed “L” shaped spline. You have the option to specify the radii of the corners between the vertical and horizontal legs of the section.
Use Tee to create a closed T-shaped spline. You can specify the radius of the two interior corners between the vertical web and horizontal flange of the section.
Use Wide Flange to create a closed spline shaped like a capital letter I. You can specify the interior corners between the vertical web and horizontal flanges of the section.
