package dip007;

import javafx.scene.shape.Circle;
import org.jetbrains.annotations.NotNull;

import java.awt.*;
import java.util.Scanner;

public class Main {

    static Point[] redRect = new Point[]{
            new Point(3, 6),
            new Point(3, 8),
            new Point(11, 8),
            new Point(11, 6)
    };

    static Point[] blueTriangleTop = new Point[]{
            new Point(4, 8),
            new Point(4, 13),
            new Point(9, 8)
    };

    static Point[] blueTriangleBottom = new Point[]{
            new Point(4, 1),
            new Point(4, 6),
            new Point(9, 6)
    };

    static Point[] smallTopTrapezoid = new Point[]{
            new Point(6, 11),
            new Point(8, 11),
            new Point(8, 10),
            new Point(6, 10)
    };

    static Point[] smallBottomTrapezoid = new Point[]{
            new Point(6, 3),
            new Point(7, 4),
            new Point(8, 4),
            new Point(8, 3)
    };

    static String red = "red";
    static String blue = "blue";
    static String green = "green";

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        float x = 0, y = 0;
        while (x == 0) {
            try {
                System.out.println("enter x plz");
                x = Float.parseFloat(input.nextLine());
            } catch (Exception e) {
                System.out.println("not a valid number");
            }
        }

        while (y == 0) {
            try {
                System.out.println("enter y plz");
                y = Float.parseFloat(input.nextLine());
            } catch (Exception e) {
                System.out.println("not a valid number");
            }
        }

        System.out.println(isPartOf(x, y, redRect));
        System.out.println(isPartOf(x, y, blueTriangleTop));
        System.out.println(isPartOf(x, y, blueTriangleBottom));
        System.out.println(isPartOf(x, y, smallTopTrapezoid));
        System.out.println(isPartOf(x, y, smallBottomTrapezoid));
    }

    private static boolean contains(float x, float y, Point[] points) {
        int i;
        int j;
        boolean result = false;
        for (i = 0, j = points.length - 1; i < points.length; j = i++) {
            if ((points[i].y > y) != (points[j].y > y) &&
                    (x < (points[j].x - points[i].x) * (y - points[i].y) / (points[j].y - points[i].y) + points[i].x)) {
                result = !result;
            }
        }
        return result;
    }

    private static boolean isPartOf(float x, float y, @NotNull Point[] points) {
        Polygon shape = new Polygon();
        for (Point point : points) {
            shape.addPoint(point.x, point.y);
        }
        return shape.contains(x, y);
    }

    public static boolean isPartOfCircle(int radius, Point center, float x, float y) {
        return new Circle(center.x, center.y,radius).contains(x,y);
    }

}