// BasicGraphicsDemo1.java

// A demo of some simple graphics operations, starting from BasicGraphics.java

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

public class BasicGraphicsDemo1 extends JComponent {
   
   public static void main(String[] args) {
      JComponent myGraphics = new BasicGraphicsDemo1(); // Your class name goes here!
      launch(myGraphics, 500, 300); // Set the initial dimensions here!
   }
   
   public void paint(Graphics page) {
      int width = getWidth();
      int height = getHeight();

      // filled blue rectangle as large as the window      
      page.setColor(Color.blue);
      page.fillRect(0,0,width,height);
      
      // filled yellow oval inscribed in the blue rectangle
      page.setColor(Color.yellow);
      page.fillOval(0,0,width,height);
      
      // unfilled (drawn) black rectangle on the left
      page.setColor(Color.black);
      page.drawRect(10,10,width/2-20,height-20);
      
      // unfilled thick-lined black ovals on the right
      ((Graphics2D)page).setStroke(new BasicStroke(5)); // 5 pixels wide
      page.drawOval(width/2+10,10,width/2-20,height/2-20); 
      page.drawOval(width/2+10,height/2+10,width/2-20,height/2-20); 

      // unfilled thin-lined red triangle on the right
      ((Graphics2D)page).setStroke(new BasicStroke(1)); // set back to 1 pixels wide
      page.setColor(Color.red);
      Polygon p1 = new Polygon();
      p1.addPoint(3*width/4,height/3);  // addPoint(x,y)
      p1.addPoint(width/2+40,2*height/3);
      p1.addPoint(width-40,2*height/3);
      page.drawPolygon(p1);
      
      // filled green pentagon in the middle
      page.setColor(Color.green);
      int pWidth = width/5;
      int pHeight = height/10;
      int pLeft = width/2  - pWidth/2;
      int pTop  = height/2 - pHeight/2;
      Polygon p2 = new Polygon();
      p2.addPoint(pLeft           , pTop);
      p2.addPoint(pLeft+pWidth/3  , pTop+pHeight);
      p2.addPoint(pLeft+2*pWidth/3, pTop+pHeight);
      p2.addPoint(pLeft+pWidth    , pTop);
      page.fillPolygon(p2);
      
      // custom-colored red rectangles in the middle
      page.setColor(new Color(100, 0, 0));  // RGB (Red, Green, Blue)
      page.fillRect(width/2-10, 10, 30, 30);
      page.setColor(new Color(200, 25, 25));
      page.fillRect(width/2-10, 50, 30, 30);
      page.setColor(new Color(255, 50, 50));
      page.fillRect(width/2-10, 90, 30, 30);
      
      // using trig to place a small blue circle at 70 degrees
      // in the first quadrant of an orange circle
      int radius = 50;
      page.setColor(Color.orange);
      // oval will be centered at (100,100)
      page.fillOval(100-radius,100-radius,2*radius,2*radius);
      // here we use 70 degrees
      int blueCenterX = 100 + (int)(radius*Math.cos(Math.PI*70/180));
      int blueCenterY = 100 - (int)(radius*Math.sin(Math.PI*70/180));
      int blueRadius = radius/10;
      page.setColor(Color.blue);
      page.fillOval(blueCenterX-blueRadius,blueCenterY-blueRadius,
                    2*blueRadius,2*blueRadius);
                    
      // draw a line connecting the centers of the orange and blue circles
      page.drawLine(100,100,blueCenterX,blueCenterY);
   }

   //////////////////////////////////////////////////////////////////////////////
   /////////////////           END OF YOUR CODE             /////////////////////
   /////////////////  (you may ignore all the code below!!! /////////////////////
   //////////////////////////////////////////////////////////////////////////////

   public static void launch(JComponent jc, int width, int height) {
      JFrame frame = new JFrame(jc.getClass().getName());
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      JPanel cp = new JPanel();
      cp.setLayout(new BorderLayout());
      cp.add(jc);
      frame.setContentPane(cp);
      frame.setSize(new Dimension(width,height));
      frame.setVisible(true);
   }
}