private void _testCurve(GeometryBuilder builder) {
GeometryFactoryImpl tCoordFactory = (GeometryFactoryImpl) builder.getGeometryFactory();
PrimitiveFactoryImpl tPrimFactory = (PrimitiveFactoryImpl) builder.getPrimitiveFactory();
PositionImpl p1 = new PositionImpl(tCoordFactory.createDirectPosition(new double[]{-50, 0}));
PositionImpl p2 = new PositionImpl(tCoordFactory.createDirectPosition(new double[]{-30, 30}));
PositionImpl p3 = new PositionImpl(tCoordFactory.createDirectPosition(new double[]{0, 50}));
PositionImpl p4 = new PositionImpl(tCoordFactory.createDirectPosition(new double[]{30, 30}));
PositionImpl p5 = new PositionImpl(tCoordFactory.createDirectPosition(new double[]{50, 0}));