package com.company;

import org.knowm.xchart.SwingWrapper;
import org.knowm.xchart.XYChart;
import org.knowm.xchart.XYChartBuilder;

import java.util.ArrayList;
import java.util.Arrays;

public class Main {

    public static void main(String[] args) {
//        WindowApp window=new WindowApp();
//        window.setVisible(true);
        //
        XYChart chart=new XYChartBuilder().width(800).height(600).title("My chart").xAxisTitle("k").yAxisTitle("Error").build();
        //chart preferenses
        chart.getStyler().setChartTitleVisible(true);
        chart.getStyler().setYAxisLogarithmic(true);
        chart.getStyler().setXAxisLabelRotation(45);
        //
        ArrayList<Double> errors2Y= new ArrayList<>();//(Arrays.asList(10.0,100.0,100.0,1000.0,10000.1,10000.0,1000000.0,1000000.0));
        solveWithNewton2(errors2Y);
        //show errors
        ArrayList<Integer> errors2X=new ArrayList<>();
        for(int i=0;i<errors2Y.size();i++){
            errors2X.add(i+1);
        }
//        for(int i=0;i<errors2Y.size();i++){
//            double error=errors2Y.get(i);
//            errors2Y.set(i,error/FuncUtils.EPSILON);
//        }
        chart.addSeries("Newton 2", errors2X,errors2Y);
        //show chart
        new SwingWrapper<XYChart>(chart).displayChart();
    }

    public static void solveWithNewton2(ArrayList<Double> errors){
        double x0, x, error;
        int k=0;
        //init
        x0 = (2.0 + 2.5) / 2.0;
        x=x0;
        error=2+2.5;
        //
        while (error > FuncUtils.EPSILON) {
            k++;
            x0 = x;
            x = FuncUtils.NewtonPhi2(x0);
            x = FuncUtils.round(x,FuncUtils.PRECISION);
            error=FuncUtils.round(FuncUtils.getNorm(x,x0),FuncUtils.PRECISION);
            errors.add(error);
        }
    }
}