// ===========================================================================
// Copyright 2018 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
// ===========================================================================
global proc string spiralSurface( float $ht, float $radius, float $numRounds,
								  float $tubeRadius)
//
//	Description:
//		This proc creates a spiral centred about the origin, with a specific
//		height, radius and number of rounds/turns/cycles.  Then it extrudes
//      a circle of "tubeRadius" along it.
{
	string $path = `spiral $ht $radius $numRounds`;
	string $circle[] = `circle -ch off -r $tubeRadius`;

	string $result[] = `extrude -n "spiral" -ch off -rn false -po 0 -et 2 -ucp 1 -fpt 1 -upn 1 $circle[0] $path`;

	delete $path $circle[0];
	return $result[0];
}