Image manipulation

[spike72]

Guys,

I am working with a signature capture... After getting the array of points from the signature I want to display(Reconstruct the signature) them in the rectangle which I draw when the form loads. Displaying them in pixels.

Anyone can help me?

Thanks in advance.

[mrmatt1111]

i wrote a custom captcha awhile back that generated an image. I use that image on a jsp page. It's not particularly good, but perhaps it will be useful?

import java.awt.image.BufferedImage;
import java.awt.Graphics2D;
import java.awt.Color;
import java.awt.Font;

public class Captcha2 {

    private static char[] elegibleChars =  "ABCDEFGHJKLMPQRSTUVWXY23456789".toCharArray();
    private int numChars = 6;
    private String randString = "";

    private Color backColor = Color.BLACK;
    private Color foreColor = Color.WHITE;

    public BufferedImage genImage()
    {
        randString = generateRandomStr();

        BufferedImage image = new BufferedImage(200, 50, BufferedImage.TYPE_INT_ARGB);

        Graphics2D g2d = (Graphics2D)image.createGraphics();

        g2d.setColor(backColor);
        g2d.fillRect(0, 0, 200, 50);
        
        char[] arr = randString.toCharArray();

        int xpos = -15;

        
        for(int j = 0; j < 200; j++)
        {
            int s = randInt(2)+1;
            g2d.setColor(foreColor);
            g2d.fillOval(randInt(200), randInt(50), s, s);
        }

        for(int j = 0; j < randString.length(); j++)
        {
            int fsize = 22+randInt(10);
            Font f = null;
            switch(randInt(2))
            {
                case 0: f = new Font("Arial",Font.BOLD, fsize);
                case 1: f = new Font("Arial",Font.BOLD, fsize);
                case 2: f = new Font("Arial",Font.BOLD, fsize);
            }
            

            int r = randInt(15);
            int x = j*(20+r) + 10;

            xpos += 20 + randInt(17);
            int ypos = randInt(20);

            BufferedImage c_image = new BufferedImage(26, 26, BufferedImage.TYPE_4BYTE_ABGR);
            Graphics2D c_g2d = (Graphics2D)c_image.getGraphics();

            c_g2d.setColor(new Color(0,0,0,0));
            c_g2d.fillRect(0, 0, 50, 50);

            double angle = Math.random() * (randInt(1)==0?-1:1) +.25;
            //
            c_g2d.translate(13, 13);            
            c_g2d.rotate(angle);
            c_g2d.translate(-(int)Math.round(fsize/2.5), +fsize/3);
            c_g2d.setColor(Color.WHITE);
            c_g2d.setFont(f);
            c_g2d.drawString(""+arr[j], 0, 0);

            g2d.drawImage(c_image, xpos,ypos, null);
        }

        return image;
    }

    public static int randInt(int upper)
    {
        return (int)(Math.random() * (upper+1));
    }

    public String getRandomStr()
    {
        return randString;
    }

    private String generateRandomStr()
    {
        String str = "";

        for(int j = 0; j < numChars; j++)
        {
            str += elegibleChars[ randInt(elegibleChars.length-1) ];
        }

        return str;
    }
}