clockwise full ellipse (#9291)

The point returned by getPoint was always reverse clockwise on a full
ellipse even when the ellipse is clock wise.

src/extras/curves/EllipseCurve.js

@@ -46,12 +46,20 @@ THREE.EllipseCurve.prototype.getPoint = function( t ) {
 
 	}
 
-	if ( this.aClockwise === true && deltaAngle != twoPi && ! samePoints ) {
+	if ( this.aClockwise === true && ! samePoints ) {
+
+		if ( deltaAngle === twoPi ) {
+
+			deltaAngle = - twoPi;
+
+		} else {
 
 			deltaAngle = deltaAngle - twoPi;
 
 		}
 
+	}
+
 	var angle = this.aStartAngle + t * deltaAngle;
 	var x = this.aX + this.xRadius * Math.cos( angle );
 	var y = this.aY + this.yRadius * Math.sin( angle );