Java Tutorial/2D Graphics/TexturePaint

Материал из Java эксперт
Версия от 15:25, 31 мая 2010; Admin (обсуждение | вклад) (1 версия)
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A texture is a bitmap image applied to a shape

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.TexturePaint;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Textures extends JPanel {
  BufferedImage s;
  public Textures() {
    try {
      s = ImageIO.read(this.getClass().getResource("s.png"));
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g;
    TexturePaint slatetp = new TexturePaint(s, new Rectangle(0, 0, 90, 60));
    g2d.setPaint(slatetp);
    g2d.fillRect(10, 15, 90, 60);
  }
  public static void main(String[] args) {
    JFrame frame = new JFrame("Textures");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new Textures());
    frame.setSize(360, 120);
    frame.setVisible(true);
  }
}





TexturePaint with BufferedImage

import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.TexturePaint;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class TextureWithBufferedImage extends JFrame {
  public TextureWithBufferedImage() {
    getContentPane().add(new DrawingCanvas());
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize(500, 500);
    setVisible(true);
  }
  public static void main(String arg[]) {
    new TextureWithBufferedImage();
  }
}
class DrawingCanvas extends JPanel {
  DrawingCanvas() {
    setSize(300, 300);
    setBackground(Color.white);
  }
  public void paint(Graphics g) {
    Graphics2D g2D = (Graphics2D) g;
    Rectangle2D rec1, rec2, rec3, rec4, rec5;
    rec1 = new Rectangle2D.Float(25, 25, 75, 150);
    rec2 = new Rectangle2D.Float(125, 25, 10, 75);
    rec3 = new Rectangle2D.Float(75, 125, 125, 75);
    rec4 = new Rectangle2D.Float(25, 15, 12, 75);
    rec5 = new Rectangle2D.Float(15, 50, 15, 15);
    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
        1);
    g2D.setComposite(ac);
    g2D.setStroke(new BasicStroke(5.0f));
    g2D.draw(rec1);
    GradientPaint gp = new GradientPaint(125f, 25f, Color.yellow, 225f, 100f,
        Color.blue);
    g2D.setPaint(gp);
    g2D.fill(rec2);
    BufferedImage bi = new BufferedImage(5, 5, BufferedImage.TYPE_INT_RGB);
    Graphics2D big = bi.createGraphics();
    big.setColor(Color.magenta);
    big.fillRect(0, 0, 5, 5);
    big.setColor(Color.black);
    big.drawLine(0, 0, 5, 5);
    Rectangle r = new Rectangle(0, 0, 5, 5);
    TexturePaint tp = new TexturePaint(bi, r);
    g2D.setPaint(tp);
    g2D.fill(rec3);
    g2D.setColor(Color.green);
    g2D.fill(rec4);
    g2D.setColor(Color.red);
    g2D.fill(rec5);
  }
}





TexturePaint with GIF image

import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.TexturePaint;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainClass extends JFrame {
  public MainClass() {
    getContentPane().add(new DrawingCanvas());
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize(500, 500);
    setVisible(true);
  }
  public static void main(String arg[]) {
    new MainClass();
  }
}
class DrawingCanvas extends JPanel {
  Font font = new Font("Dialog", Font.BOLD, 40);
  FontMetrics fontMetrics;
  DrawingCanvas() {
    setSize(300, 300);
    setBackground(Color.white);
    fontMetrics = getFontMetrics(font);
  }
  public void paint(Graphics g) {
    Graphics2D g2D = (Graphics2D) g;
    Image displayImage = getToolkit().getImage("c:\your.gif");
    
    if (displayImage != null) {
      BufferedImage bi = new BufferedImage(
                         displayImage.getWidth(this),
                         displayImage.getHeight(this),
                         BufferedImage.TYPE_INT_RGB);
      bi.createGraphics().drawImage(displayImage, 0, 0, this);
      Rectangle2D rectangle = new Rectangle2D.Float(0, 0,
                                 displayImage.getWidth(this),
                                 displayImage.getHeight(this));
      TexturePaint tp = new TexturePaint(bi, rectangle);
      g2D.setPaint(tp);
      g2D.fill(new Rectangle2D.Float(0, 0, getWidth(), getHeight()));
  }
  }
}