
Spiral 

Spiral is an element used for creation of every possible spirals (flat spiral, conical helix, and many other types).
It has the following parameters:
"1.Radius,(m)"  radius of spiral in the start (metres).
"2.Height,(m)"  height of spiral (metres).
"3.Number of turns"  number of spiral turns (fullscrew): it's possible set noninteger values too.
"4.Crossection width(m)"  width of crossection in the start of the spiral (metres).
"5.Crossection height(m)"  height of crossection in the start of the spiral (metres).
"6.Crossection shape(14)"  type of crossection shape: 1,2  rectangular, 3  rhombus, 4  circle (integer).
"7.Ratio of Radius"  ratio of radius: startradius to endradius of the spiral (if the parameter is equal "1" the spiral has constant radius).
"8.Ratio of Width"  ratio of width: startwidth to endwidth of crossection (if the parameter is equal "1" the spiral has constant width of crossection).
"9.Ratio of Height"  ratio of height: startheight to endheight of crossection (if the parameter is equal "1" the spiral has constant height of crossection).
"10.Points in circle(350):"  quantity of points describing a base circle of the spiral (integer).
Range of use: curved walls, spiral stairs.


Example 3D scene:
(requires a vrmlviewer)
view 3D scene
edit 3D scene

