Fix coordinate calculation

Issue-Ref: 4261
Signed-off-by: Ulrich Schöpp <schoepp@fortiss.org>

org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/lwfxef/visual/elliptic/CircularContentVisualBase.java

@@ -90,8 +90,8 @@ public abstract class CircularContentVisualBase extends ContentVisualBase {
 		double angleRad = toRadians(angleDeg);
 		double nx = cos(angleRad);
 		double ny = sin(angleRad);
-		double x = pb.getMinX() + w2 + radius * nx;
-		double y = pb.getMinY() + h2 + radius * ny;
+		double x = w2 + radius * nx;
+		double y = h2 + radius * ny;
 		return new DiagramCoordinate(x, y);
 	}