Circle.java

package shape;

import javafx.geometry.Point2D;
import javafx.scene.canvas.GraphicsContext;

public class Circle implements Shape {

    private double radius, x, y;

    public Circle(double x, double y, double radius) {
        this.x = x;
        this.y = y;
        this.radius = radius;
    }


    @Override
    public void paint(GraphicsContext graphicsContext) {
        graphicsContext.strokeOval(x-radius, y-radius, 2 * radius, 2 * radius);
    }

    @Override
    public boolean contains(double x, double y) {
        double dx = x -= this.x;
        double dy = y -= this.y;
        return dx*dx + dy*dy <= radius*radius;
    }

    @Override
    public void translate(double dx, double dy) {
        this.x += dx;
        this.y += dy;
    }

}