#VRML V2.0 utf8
PROTO RevolveZ [
	field SFInt32 spineSides 3
	field MFVec2f crossSection [ ]
	field SFBool ccw TRUE
	field SFBool convex TRUE
	field SFFloat creaseAngle 0
	field SFBool solid TRUE
	field SFBool offset FALSE
]
{
	DEF EX Extrusion {
		crossSection []
		spine []
		beginCap FALSE
		endCap FALSE
		ccw IS ccw
		convex IS convex
		creaseAngle IS creaseAngle
		solid IS solid
	}
	Script {
		field SFInt32 s IS spineSides
		field MFVec2f c IS crossSection
		field SFNode e USE EX
		field SFInt32 l 0

		field SFInt32 i 0
		field SFInt32 m 0
		field SFInt32 os 0
		field SFFloat ps 0
		field SFFloat p 0
		field SFFloat r 0 #radius
		field MFVec3f st [] # spine temp
		field SFBool ofs IS offset
		url [ "javascript:
			function initialize() {
				//find biggest x in crossSection
				l = c.length;
				for ( i = 0; i < l; i++ ) {
					if ( c[i].x > c[m].x ) { m = i; }
				}
				r = c[m].x;
				//move crossSection to Center
				for ( i = 0; i < l; i++ ) {
					c[i].x = c[i].x - r;
				}
				if ( ofs ){ os = 1; };
				//compute the spine
				ps = Math.PI / s;
				for (i = 0; i < s; i++) {
					p = ps * (i * 2 + os);
					st[i] = new SFVec3f( r * Math.cos(p), r * Math.sin(p),0);
				}
				st[s] = st[0];
				e.set_crossSection = c;
				e.set_spine = st;
			}
		" ]
	}
}