<dependency> <groupId>net.sf.curvesapi</groupId> <artifactId>curvesapi</artifactId> <version>1.06</version> </dependency> Curve curve = CurveFactory.createQuadraticBezier(0, 0, 10, 20, 30, 0); double length = curve.length(); System.out.println("Length of curve: " + length); SampledCurve sampledCurve = new SampledCurve(curve); Point2D point = sampledCurve.sample(10); System.out.println("Point at distance 10: " + point); List<Point2D> points = new ArrayList<>(); points.add(new Point2D.Double(0, 0)); points.add(new Point2D.Double(10, 20)); points.add(new Point2D.Double(30, 0)); FittingCurve fittingCurve = new FittingCurve(); Curve fittedCurve = fittingCurve.fit(points); System.out.println("Fitted curve: " + fittedCurve);