Starter File for Graphics Introduction

GraphicsIntro

// Introduction to DrawingPanel, Graphics, Color

import java.awt.*;  // to use Graphics, Color


public class GraphicsIntro {

		public static void main(String[] args) {
			DrawingPanel panel = new DrawingPanel(300, 200);
			
			// Set its Background
			panel.setBackground(Color.YELLOW);
			
			// Create the Graphics Object
			Graphics g = panel.getGraphics();
			
			// A Line
			g.drawLine(25, 75, 100, 25);
			// Make it a Triangle
			//g.drawLine(100, 25, 175, 75);
			//g.drawLine(175,75,25,75);
			
			// Now draw a Rectangle (<x>, <y>, <width>, <height>)
			//g.drawRect(15,30,20,30);
			
			// Now draw an Oval (<x>, <y>, <width>, <height>)
			//g.drawOval(15,30,20,30);	
			
			// Fill them in
			// Fill a Rectangle (<x>, <y>, <width>, <height>)
			//g.fillRect(200,30,20,30);
			// Fill an Oval (<x>, <y>, <width>, <height>)
			//g.fillOval(250,30,20,30);	
			
			// Set the Color for our Graphics drawing (like the pen)
			//g.setColor(Color.GREEN);
			
			// What shall we color??			
			//g.fillRect(200,100,20,30);
			//g.fillOval(250,100,20,30);	
			
			//Change color and add thier outline?	
			//g.setColor(Color.RED);
			//g.drawRect(200,100,20,30);
			//g.drawOval(250,100,20,30);	
			
			// Using Methods, we can pass Graphics object g along...		
			//drawFace(g);
			//drawSingleCar(g);
			//r2D2(g);
			
			// Loops
			// Draw ten stacked rectangles starting at (20, 20), height 10, 
			//   width starting at 100 and decreasing by 10 each time
			/* for (int i = 0; i < 10; i++) {
	    		g.drawRect(20, 20 + 10 * i, 100 - 10 * i, 10);		
			*/
			
		}
		
		
		// Draws a face with a rectangular mouth
		// Notice that drawn shapes "stack" (the last drawn is what shows up)
		public static void drawFace(Graphics g) {
			g.setColor(Color.ORANGE);
			g.fillOval(50, 50, 100, 100);
			
			g.setColor(Color.BLACK);
			g.fillOval(75, 80, 5, 20);
			g.fillOval(125, 80, 5, 20);
			
			g.setColor(Color.RED);
			g.drawRect(80, 120, 40, 10);	
		}
		
		public static void r2D2(Graphics g) {
			//Dome
			g.setColor(Color.LIGHT_GRAY);
			g.fillOval(50,100,50,50);
			g.setColor(Color.BLUE);		
			g.fillRect(67,107,20,18);
			g.setColor(Color.RED);		
			g.fillOval(70,110,12,12);
			//Body & Legs
			g.setColor(Color.WHITE);
			g.fillRect(50,125,50,60);
			g.fillRect(40,125,10,75);
			g.fillRect(100,125,10,75);	
			g.fillRect(30,170,10,30);			
			g.fillRect(110,170,10,30);	
			// Detail
			g.setColor(Color.LIGHT_GRAY);
			g.fillRect(65,155,10,10);			
			g.fillRect(65,140,10,10);
			g.setColor(Color.BLACK);
			g.drawRect(50,125,50,60);
			g.drawRect(55,130,5,40);
			g.drawRect(90,130,5,40);
			g.drawRect(55,175,40,5);
			g.drawRect(30,195,20,10);
			g.drawRect(100,195,20,10);	
			g.drawRect(40,125,10,70);			
			g.drawRect(100,125,10,70);	
			g.drawOval(66,156,8,8);			
			g.drawOval(66,141,8,8);	
			g.drawLine(30,195,40,170);
			g.drawLine(120,195,110,170);		
			g.drawOval(30,170,8,8);			
			g.drawOval(112,170,8,8);						
		}		
		
		// Draw ten stacked rectangles starting at (20, 20), height 10, 
		//   width starting at 100 and decreasing by 10 each time
		public static void stairs0(Graphics g) {
			for (int i = 0; i < 10; i++) {
	    		g.drawRect(20, 20 + 10 * i, 100 - 10 * i, 10);
			}
		}
		
		// Both the width of the stairs and their starting position change
		// as we go down
		public static void stairs1(Graphics g) {
			for (int i = 0; i < 10; i++) {
	    		g.drawRect(20 + 10 * i, 20 + 10 * i, 100 - 10 * i, 10);
			}
		}
		
		// The width of the stairs increases, the starting position decreases 
		public static void stairs2(Graphics g) {
			for (int i = 0; i < 10; i++) {
	    		g.drawRect(110 - (10 * i), 20 + 10 * i, 10 + 10 * i, 10);
			}
		}
		
		// Standard Single Car
		public static void drawSingleCar(Graphics g) {
		
			g.setColor(Color.BLACK);
			g.fillRect(10, 30, 100, 50);
		
			
			g.setColor(Color.RED);
		
			g.fillOval(20, 70, 20, 20);
		
			g.fillOval(80, 70, 20, 20);
				
			g.setColor(Color.CYAN);
		
			g.fillRect(80, 40, 30, 20);
		}
		
		// parameterized car method
		public static void drawCar(Graphics g, int x, int y, int size) {
	        g.setColor(Color.BLACK);
	        g.fillRect(x, y, size, size / 2);
	        
	        g.setColor(Color.RED);
	        g.fillOval(x + size / 10, y + size * 2 / 5, size / 5, size / 5);
	        g.fillOval(x + size * 7 / 10, y + size * 2 / 5, size / 5, size / 5);
	        
	        g.setColor(Color.CYAN);
	        g.fillRect(x + size * 7 / 10, y + size / 10, size * 3 / 10, size / 5);
	    }
		 
		 public static void drawCars(Graphics g, int x, int y, int size, int count) {
		 	for(int i = 0; i < count; i++) {
				drawCar(g, x + i * 50, y, size);
			}
		 }
	}