AffineFrame_hw.java

import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class AffineFrame_hw extends JFrame {
	JPanel cotrolPanelMain = new JPanel();
	JPanel cotrolPanelShow = new JPanel();;
	JPanel cotrolPanelBackColor = new JPanel();;
	JPanel cotrolPanelTranslate = new JPanel();;
	JPanel cotrolPanelScale = new JPanel();
	JPanel cotrolPanelRotate = new JPanel();
	JPanel cotrolPanelShear = new JPanel();;
	ImagePanel imagePanel;
	JButton btnShow;
	JButton btnTranslate;
	JButton btnScale;
	BufferedImage img;
	BufferedImage newImg;
	JTextField tfDeltaX = new JTextField(5);
	JTextField tfDeltaY = new JTextField(5);
	JTextField tfAmpX = new JTextField(5);
	JTextField tfAmpY = new JTextField(5);
	JLabel lbDeltaY = new JLabel("y軸位移");
	JLabel lbDeltaX = new JLabel("x軸位移");
	JLabel lbAmpX = new JLabel("x軸倍率");
	JLabel lbAmpY = new JLabel("y軸倍率");
	final int[][][] data;
	int height;
	int width;

	AffineFrame_hw() {
		setBounds(0, 0, 1500, 1500);
		getContentPane().setLayout(null);
		tfDeltaX.setText("0");
		tfDeltaY.setText("0");
		tfAmpX.setText("1.0");
		tfAmpY.setText("1.0");
		setTitle("Affine Transform Homework");
		try {
			img = ImageIO.read(new File("C:/Users/user/Desktop/img/plate.png"));
		} catch (IOException e1) {
			e1.printStackTrace();
		}
		height = img.getHeight();
		width = img.getWidth();
		data = new int[height][width][3];
		for (int y = 0; y < height; y++) {
			for (int x = 0; x < width; x++) {
				int rgb = img.getRGB(x, y);
				System.out.println(rgb);
				data[y][x][0] = Util.getR(rgb);
				data[y][x][1] = Util.getG(rgb);
				data[y][x][2] = Util.getB(rgb);
			}
		}

		btnShow = new JButton("顯示");
		btnTranslate = new JButton("平移");
		btnScale = new JButton("放大/縮小");
		cotrolPanelMain = new JPanel();
		cotrolPanelMain.setLayout(new GridLayout(1, 7));
		cotrolPanelShow.add(btnShow);
		cotrolPanelMain.add(cotrolPanelShow);
		cotrolPanelMain.add(cotrolPanelBackColor);
		cotrolPanelTranslate.add(lbDeltaX);
		cotrolPanelTranslate.add(tfDeltaX);
		cotrolPanelTranslate.add(lbDeltaY);
		cotrolPanelTranslate.add(tfDeltaY);
		cotrolPanelTranslate.add(btnTranslate);
		cotrolPanelMain.add(cotrolPanelTranslate);
		cotrolPanelScale.add(lbAmpX);
		cotrolPanelScale.add(tfAmpX);
		cotrolPanelScale.add(lbAmpY);
		cotrolPanelScale.add(tfAmpY);
		cotrolPanelScale.add(btnScale);
		cotrolPanelMain.add(cotrolPanelScale);
		cotrolPanelMain.add(cotrolPanelRotate);
		cotrolPanelMain.add(cotrolPanelShear);
		cotrolPanelMain.add(new JPanel());
		cotrolPanelMain.add(new JPanel());
		cotrolPanelMain.add(new JPanel());
		cotrolPanelMain.setBounds(0, 0, 1200, 150);
		getContentPane().add(cotrolPanelMain);
		imagePanel = new ImagePanel();
		imagePanel.setBounds(0, 180, 1500, 1500);
		getContentPane().add(imagePanel);

		btnShow.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				Graphics g = imagePanel.getGraphics();
				imagePanel.paintComponent(g);
				g.drawImage(img, 0, 0, null);

			}
		});

		btnTranslate.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				Graphics g = imagePanel.getGraphics();
				int delx = Integer.parseInt(tfDeltaX.getText());
				int dely = Integer.parseInt(tfDeltaY.getText());
				imagePanel.paintComponent(g);
				g.drawImage(img, delx, dely, null);

			}
		});

		btnScale.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				double delx = Double.parseDouble(tfAmpX.getText());
				double dely = Double.parseDouble(tfAmpY.getText());
				int finalwidth = (int) (delx * width);
				int finalheight = (int) (dely * height);
				newImg = new BufferedImage(finalwidth, finalheight, BufferedImage.TYPE_INT_ARGB);
				double[][] matrix = { { 1 / delx, 0.0, 0.0 }, { 0.0, 1 / dely, 0.0 }, { 0.0, 0.0, 1 } };
				for (int y = 0; y < (int) height * dely - 1; y++) {
					for (int x = 0; x < (int) width * delx - 1; x++) {
						double[] after_position = { x, y, 1.0 };
						double[] original_position = Util.affine(matrix, after_position);

						double alpha = original_position[0] - (int) (original_position[0]);
						double beta = original_position[1] - (int) (original_position[1]);

						int r = Util.bilinear(data[(int) original_position[1]][(int) original_position[0]][0],
								data[(int) original_position[1]][(int) original_position[0] + 1][0],
								data[(int) original_position[1] + 1][(int) original_position[0]][0],
								data[(int) original_position[1] + 1][(int) original_position[0] + 1][0], alpha, beta);
						int g = Util.bilinear(data[(int) original_position[1]][(int) original_position[0]][1],
								data[(int) original_position[1]][(int) original_position[0] + 1][1],
								data[(int) original_position[1] + 1][(int) original_position[0]][1],
								data[(int) original_position[1] + 1][(int) original_position[0] + 1][1], alpha, beta);
						int b = Util.bilinear(data[(int) original_position[1]][(int) original_position[0]][2],
								data[(int) original_position[1]][(int) original_position[0] + 1][2],
								data[(int) original_position[1] + 1][(int) original_position[0]][2],
								data[(int) original_position[1] + 1][(int) original_position[0] + 1][2], alpha, beta);
						newImg.setRGB(x, y, Util.makeColor(r, g, b));

					}
				}
				Graphics g = imagePanel.getGraphics();
				imagePanel.paintComponent(g);
				g.drawImage(newImg, 0, 0, null);
			}
		});
	}

	public static void main(String[] args) {
		AffineFrame_hw frame = new AffineFrame_hw();
		frame.setSize(1500, 1500);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}