AbstractShape.java

package shape;

import javafx.geometry.Point2D;
import java.util.ArrayList;
import java.util.List;
import javafx.scene.canvas.GraphicsContext;

public abstract  class AbstractShape implements Shape {
    private List<Point2D> points = new ArrayList<>();

    public void addPoints(Point2D... points){//Point2D... refere a plusieurs points
         for(Point2D point:points) { // utilise la boucle vu que je dois ajouter tous les points
             this.points.add(point); //this.points refere a la liste
         }
    }
    public int pointsCount(){ //nombre total de points
        return points.size();
    }
    public Point2D point(int index){
        return points.get(index);
    }

    public abstract void draw(GraphicsContext graphicsContext);

}