Assignment 11 CG

clip.java

package computergraphics;

import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;

import java.awt.Color;
import java.awt.Point;
import java.awt.image.BufferedImage;

public class DrawingPanel extends JPanel {
	
	DrawingPanel() {
		setBackground(Color.WHITE);
	}
	
	public static void main(String[] args) {
		JFrame frame = new JFrame("Javed - 2017-ARID-264");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLayout(null);

		JButton reflectButton = new JButton("Load and Clip");
		reflectButton.setBounds(10, 10, 200, 30);
		frame.add(reflectButton);
		
		DrawingPanel drawingPanel = new DrawingPanel(); 
		drawingPanel.setBounds(10, 50, 500, 500);
		frame.add(drawingPanel);
		
		reflectButton.addActionListener(e -> {
			JFileChooser fileChooser = new JFileChooser();
			
			fileChooser.setCurrentDirectory(null);
			int option = fileChooser.showOpenDialog(frame.getContentPane());
			
			if(option == JFileChooser.APPROVE_OPTION) {
				try {
					// Load Image
					BufferedImage bimage = ImageIO.read(fileChooser.getSelectedFile());
					drawingPanel.getGraphics().drawImage(bimage, 0, 0, null);
					
					// Clip
					int xmin = 250;
					int xmax = 450;
					int ymin = 100;
					int ymax = 300;
					int width = 200;
					int height = 200;
					
					BufferedImage clippedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);		
					
					for(int x = xmin; x <xmax; x++) {
						for(int y = ymin; y<ymax; y++) {							
							clippedImage.setRGB(x-xmin, y-ymin, bimage.getRGB(x, y));
						}
					}
					
					drawingPanel.getGraphics().drawImage(clippedImage, 0, 0, null);
					
				} catch(Exception ex) { }
			}
		});
		
		frame.setSize(600, 600);
		frame.setVisible(true);			
		
	}

}

reflection.java

package computergraphics;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Point;

public class DrawingPanel extends JPanel {
	
	DrawingPanel() {
		setBackground(Color.WHITE);
	}
	
	public void paint(Graphics g) {
		super.paint(g);
		g.setColor(Color.RED);
		g.drawPolygon(new int[] {200, 300, 100}, new int[] {100, 200, 200}, 3);
	}
	
	public static Point[] reflectTriangle(Point x, Point y, Point z, Point p) {
		Point rx = new Point(p.x+(x.x-p.x), p.y+(-x.y+p.y));
		Point ry = new Point(p.x+(y.x-p.x), p.y+(-y.y+p.y));
		Point rz = new Point(p.x+(z.x-p.x), p.y+(-z.y+p.y));
		
		return new Point[] {rx, ry, rz};
	}

	public static void main(String[] args) {
		JFrame frame = new JFrame("Javed - 2017-ARID-264");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLayout(null);

		JButton reflectButton = new JButton("Reflect");
		reflectButton.setBounds(10, 10, 100, 30);
		frame.add(reflectButton);
		
		DrawingPanel drawingPanel = new DrawingPanel(); 
		drawingPanel.setBounds(10, 50, 500, 500);
		frame.add(drawingPanel);
		
		reflectButton.addActionListener(e -> {
			Graphics g = drawingPanel.getGraphics();
			Point[] points = reflectTriangle(
				new Point(200, 100), 
				new Point(300, 200), 
				new Point(100, 200), 
				new Point(220, 220) // reflection point
			);
			System.out.println(points[0].x + ", " + points[0].y);
			
			g.drawPolygon(
				new int[] {points[0].x,points[1].x, points[2].x},
				new int[] {points[0].y, points[1].y, points[2].y}, 
			3);
		});
		
		frame.setSize(540, 600);
		frame.setVisible(true);			
		
	}

}

w2v.java

package computergraphics;

import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;

import java.awt.Color;
import java.awt.Point;
import java.awt.image.BufferedImage;

public class DrawingPanel extends JPanel {
	
	DrawingPanel() {
		setBackground(Color.WHITE);
	}
	
	public static Point w2v(Point pw, 
			int xwMin, int xwMax, int ywMin, int ywMax, 
			int xvMin, int xvMax, int yvMin, int yvMax) {
	    int x = (int)(xvMin + (float)((pw.x - xwMin) * (float)(xvMax - xvMin) / (xwMax - xwMin)));
	    int y = (int)(yvMin + (float)((pw.y - ywMin) * (float)(yvMax - yvMin) / (ywMax - ywMin)));
	    return new Point(x,y);
	}
	
	public static void main(String[] args) {
		JFrame frame = new JFrame("Javed - 2017-ARID-264");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLayout(null);

		JButton reflectButton = new JButton("Load");
		reflectButton.setBounds(10, 10, 100, 30);
		frame.add(reflectButton);
		
		DrawingPanel drawingPanel1 = new DrawingPanel(); 
		drawingPanel1.setBounds(10, 50, 500, 500);
		frame.add(drawingPanel1);
		
		DrawingPanel drawingPanel2 = new DrawingPanel(); 
		drawingPanel2.setBounds(520, 50, 500, 500);
		frame.add(drawingPanel2);
		
		reflectButton.addActionListener(e -> {
			JFileChooser fileChooser = new JFileChooser();
			
			fileChooser.setCurrentDirectory(null);
			int option = fileChooser.showOpenDialog(frame.getContentPane());
			
			if(option == JFileChooser.APPROVE_OPTION) {
				try {
					// Simple
					BufferedImage bimage = ImageIO.read(fileChooser.getSelectedFile());
					drawingPanel1.getGraphics().drawImage(bimage, 0, 0, null);
					
					// V2W
					BufferedImage viewPort = new BufferedImage(
						drawingPanel2.getWidth(), 
						drawingPanel2.getHeight(), 
						BufferedImage.TYPE_INT_ARGB
					);				
					for(int x = 0; x <bimage.getWidth(); x++) {
						for(int y = 0; y<bimage.getHeight(); y++) {
							Point p = w2v(
								new Point(x,y), 
								0, bimage.getWidth(), 0, bimage.getHeight(), 0, 
								drawingPanel2.getWidth(), 0, drawingPanel2.getHeight()
							);
							viewPort.setRGB(p.x, p.y, bimage.getRGB(x, y));
						}
					}
					drawingPanel2.getGraphics().drawImage(viewPort, 0, 0, null);
					
				} catch(Exception ex) { }
			}
		});
		
		frame.setSize(1040, 600);
		frame.setVisible(true);			
		
	}

}