// This program draws a rudimentary van using DrawingPanel.
//
// DEVELOPMENT NOTES:
// (These notes would not be in your program's comments. They are here
// to help you understand important topics or elements of this code.)
//
// Further improves the van drawing program by adding a parameter for 
//   the van's size to the drawVan method. Notice how both the size
//   of the van and the offsets for the components depend on the size.
//
// You must download DrawingPanel.java from the course website and save it
//   in the same folder as this file to run this program.
import java.awt.*;

public class Drawing3 {
   public static void main(String[] args) {
      DrawingPanel panel = new DrawingPanel(400, 200);
      panel.setBackground(Color.LIGHT_GRAY);
      Graphics brush = panel.getGraphics();
      
      drawVan(brush, 10, 30, 100);
      drawVan(brush, 150, 10, 50);
      
      for (int i = 0; i < 5; i++) {
         drawVan(brush, 10 + 50 * i, 130, 40);
      }
   }

   // draw a single van
   //
   // Graphics pen - the Graphics object to use when drawing
   // int x - the x-coordinate of the van's upper-left corner
   // int y - the y-coordinate of the van's upper-left corner
   // int size - the size (width) of the van
   public static void drawVan(Graphics pen, int x, int y, int size) {
      // draw body
      pen.setColor(Color.BLACK);
      pen.fillRect(x, y, size, size / 2);
      
      // draw windshield
      pen.setColor(Color.CYAN);
      pen.fillRect(x + (size * 7 / 10), y + (size / 10), size * 3 / 10, size / 5);
      
      // draw wheels
      pen.setColor(Color.RED);
      pen.fillOval(x + (size / 10), y + (size * 4 / 10), size / 5, size / 5);
      pen.fillOval(x + (size * 7 / 10), y + (size * 4 / 10), size / 5, size / 5);
   }
}