COS126

• Download NgonArt.java

/******************************************************************************
  * Name: Donna Gabai
  * NetID: dgabai
  * Precept: P99
  * 
  * Description: A client program for Ngon that reads in Ngons
  * from StdIn and draws them in order from biggest area to smallest.
  * 
  * Dependencies: StdDraw, Ngon, StdIn, ST
  * 
  * Remarks: There are many ways to implement the sorting part of this program!
  *****************************************************************************/

import java.awt.Color;

public class NgonArt {
    
    // read from standard input values to define Ngons
    // store Ngons to draw in order of their areas
    public static void main(String[] args) {
        
        // same scale as Ngon
        StdDraw.setXscale(-1, 1);
        StdDraw.setYscale(-1, 1);
        
        // how many?
        int COUNT = StdIn.readInt();
        
        // store Ngons in ST using inverse area as key
        ST<Double, Ngon> ngons = new ST<Double, Ngon>();
        
        // read in Ngon info, construct Ngon, put in symbol table
        for (int i = 0; i < COUNT; i++) {
            int n = StdIn.readInt();
            double rad = StdIn.readDouble();
            double x = StdIn.readDouble();
            double y = StdIn.readDouble();
            int r = StdIn.readInt();
            int g = StdIn.readInt();
            int b = StdIn.readInt();
            Color c = new Color(r, g, b);
            Ngon ngon = new Ngon(n, rad, x, y, c);
            ngons.put(0 - ngon.area(), ngon);
        }
        
        // sorting by inverse area means largest will come out first
        for (double inverseArea : ngons) {
            Ngon ngon = ngons.get(inverseArea);
            ngon.drawFilled();
        }

        // NOTE:
        // There were many acceptable solutions for sorting
        // the Ngons. For instance, some students read in the
        // Ngons into an array and implemented insertion sort.
    }
}