Using ints or floats for Color
Thanks in advance for taking time to read this message.
I am using "Color" and need the most accurate color rendering. I found that I was losing some accuracy with Color(int, int, int), with integers ranging from 0-255. Because of this loss of accuracy, I am contemplating using Color(float, float, float) to make my colors. The float values can range from 0 - 1.
"Theoretically" using integers one can effectively create 256^3 colors. How many colors can be created when using floats? More importantly, how do the float produced colors correspond to the more widely used int colors?
Thanks,
Every_man
Assuming you want a RGB color scheme, you could get approx (2^22)^3 different colors, since a float has 2^22 bits for the mantissa (assuming you want an even spread between 0 and 1).
When using Color(float, float, float) Java will try to map these values to the available system as best as possible. Therefore if your system can hadle more than 256 values for each of the RGB values you should get better color resolution.
If you system does not use RGB encoding, you should probably use Color(ColorSpace, float[], float)
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>
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Subject: To access iKey 2032 token, to retrieve public/private key from iKey 2032 token using pkcs#11 in sdk1.5, to encrypt/decrypt files.
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SunPKCS11-rainbow_token RSA public key, 1024 bits (id 10, session object)
modulus: 114338469922835728259534620463489934081917342509275191892563243582065
74380495029336519036972702864998634664269499641616889325482699399559620370181624
72068116957594402738459932902481604823224406859575930392708524033619120886256353
58738237376491107769961041015109436347533548940674900728805627968145581222172729
public exponent: 65537
SunPKCS11-rainbow_token RSA private key, 1024 bits (id 11, session object, sensi
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SunPKCS11-rainbow_token RSA public key, 1024 bits (id 12, session object)
modulus: 138556361758970660122782926386849783732271581948935425587968692317930
09262429353977097956605140384961825974398004270547046620971835394362397699233738
54481804748731546655197744692886754946373745924825650876065903334173666990347814
83727290962956934521650035029131176614982652900659797194703065074407857754883163
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Encrypt Program ::
import java.io.*;
import java.util.*;
import java.lang.*;
import java.sql.*;
import java.text.*;
import java.math.*;
import java.security.*;
import java.security.cert.*;
import java.security.interfaces.*;
import javax.crypto.interfaces.*;
import javax.net.ssl.*;
import javax.crypto.*;
import javax.crypto.spec.DESKeySpec;
import java.security.KeyStore.*;
* A class of Encrypt.
public class Encrypt
public Encrypt(){}
public void loginToken() {
Provider p = new sun.security.pkcs11.SunPKCS11(MQConfig.getvalue("SecurityPropertyPath"));
Security.addProvider(p);
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ks.load(null,pin);
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catch(CertificateException ce)
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import java.io.*;
import java.util.*;
import java.lang.*;
import java.sql.*;
import java.text.*;
import java.math.*;
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import java.security.interfaces.*;
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System.out.println("Certificate Exception " + ce.getMessage());
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System.out.println("IO Exception " + ioe.getMessage());
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Configuration file::
name = rainbow_token
library = c:\winnt\system32\dkck201.dll
attributes(*,CKO_PRIVATE_KEY,*) = {
CKA_SIGN = true
attributes(*,CKO_PRIVATE_KEY,CKK_DH) = {
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Now i manage to use the same keypair for both encrypt/decryprt-SunPKCS#11. Below is my code woks well. In my code i hard coded alias name of certificate, did anyone knows how to read alias name of certificate from iKey token 2032??
import java.io.*;
import java.util.*;
import java.lang.*;
import java.sql.*;
import java.text.*;
import java.math.*;
import java.security.*;
import java.security.cert.*;
import java.security.interfaces.*;
import javax.crypto.interfaces.*;
import javax.net.ssl.*;
import javax.crypto.*;
import javax.crypto.spec.DESKeySpec;
import java.security.KeyStore.*;
* A class of Encrypt.
public class Encrypt
public Encrypt(){}
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Provider p = new sun.security.pkcs11.SunPKCS11(MQConfig.getvalue("SecurityPropertyPath"));
String myAlias = "349eefd1-845b-4ba4-9f88-06e9f5cb82f6";
/** to view alias name
keytool -list -v -keystore NONE -storetype PKCS11 -storepass PASSWORD
Security.addProvider(p);
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PrivateKey privKey = null;
PublicKey pubKey = null;
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String password = General.ReadFiles(MQConfig.getvalue("logFilePath"),"Simple");
password = password.trim();
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ks = KeyStore.getInstance("pkcs11");
ks.load(null,pin);
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System.out.println("key bytes: " + key.getEncoded()); // -> null!!!!!!!
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privKey = (PrivateKey)key;
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//rsasig.initSign(privKey);
//rsasig.update(data.getBytes());
//byte[] sigBytes = rsasig.sign();
pubKey = cert.getPublicKey();
//System.out.println("signed bytes: " +sigBytes);
//return sigBytes;
//KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA",p);
//KeyPair kp = kpg.genKeyPair();
//KeyPair kp = kpg.generateKeyPair();
//kpg.initialize(1024, new java.security.SecureRandom());
FileInputStream in = new FileInputStream("C:\\ReportDBBE.properties");
FileOutputStream out = new FileOutputStream("C:\\ReportDBAE.properties");
Cipher cp=Cipher.getInstance("RSA/ECB/PKCS1Padding", p);
//cp.init(cp.ENCRYPT_MODE,kp.getPublic());
cp.init(cp.ENCRYPT_MODE,pubKey);
CipherOutputStream cout=new CipherOutputStream(out,cp);
byte[] input=new byte[8];
int byteread=in.read(input);
while(byteread!=-1){
cout.write(input,0,byteread);
byteread=in.read(input);
cout.flush();
in.close();
cout.close();
catch(NoSuchAlgorithmException nsae)
System.out.println("No Such Algorithm Exception " + nsae.getMessage());
catch(NoSuchPaddingException nspe)
System.out.println("No Such Padding Exception " + nspe.getMessage());
catch(InvalidKeyException ike)
System.out.println("Invalid Key Exception " + ike.getMessage());
ike.printStackTrace();
catch(IllegalStateException ise)
System.out.println("Illegal State Exception " + ise.getMessage());
catch(KeyStoreException kse)
System.out.println("Key Store Exception " + kse.getMessage());
catch(CertificateException ce)
System.out.println("Certificate Exception " + ce.getMessage());
catch(IOException ioe)
System.out.println("IO Exception " + ioe.getMessage());
catch(UnrecoverableKeyException unrke)
System.out.println("Unrecoverable Key Exception " + unrke.getMessage());
public static void main (String args[]) throws Exception {
try{
Encrypt tl = new Encrypt();
tl.loginToken();
}catch(Exception e){
e.printStackTrace();
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I am aware of the attributes that the help docs suggest that
need to be altered as listed here :
http://livedocs.adobe.com/en_US/Spry/1.4/help.html?content=WS0BB04E11-1BE3-4a67-BC94-BE7DA 93A0159.html
I have been working on just an experimental page, that is now
hacked up, however if you want to see that it is here with only the
first list item coded:
http://audibleimagesav.com/site%20theme%20ideas/sprymenu_exp.html
The spry css menu widget for that page is here:
http://audibleimagesav.com/SpryAssets/SpryMenuBarVertical.css
So in short, has anyone done a bkgrd image for the main menu
(not submenu) in a spry widget?
Thanks in advance.
Art
Art Hansen
Web Design & Marketing
http://www.innova-techsolutions.com
321.750.3852 - Cocoa Beach, Florida, USAhttp://meyerweb.com/eric/css/edge/popups/demo2.html
Maybe -
Configuring an external Monitor for Color Correction?
I currently have my Mac Book Pro 17in connected by the mini DV port and one USB port to a Mac 30" Cinema Display for editing on FCP7. I use it in a two monitor configuration with my Bin on the laptop screen and the FCP interface on the Cinema display. This works well for me.
I also have an external ESata drive via PCI slot. I would like to connect an external video monitor as well for quality checks and Color correction purposes. I am also looking for advice on what sort of external video monitor I should get and how would I connect it to the laptop or via some external third party device. I would be hoping to use a video monitor connected via a hdmi connection. Most of the work I do is supplied on drives, original material EX3 or Canon and some on HDV (Camera) that I ingest via Firewire800. Many thanks in advance.Sorry Mark, you can't always have everything ... with the Matrox MXO2 (or similar, like Motu HDX-SDI) you wouldn't be able to use your eSATA drive at the same time as the I/O device as they both use the ExpressCard/34 port ... you would have to use a FW800 drive for your media instead. On the plus side the MXO2 includes a calibration tool which can help you calibrate your LCD/LED screen via HDMI for accurate color reproduction.
An alternative device would be the AJA IoHD (or perhaps Motu V4HD) which connects via FW800. It's a superb piece of kit but is costly and doesn't offer any calibration utility ... that said, a good quality plasma display, such as a Panasonic Pro Plasma, can be found relatively cheaply and many of these have built in picture controls suitable for getting an accurate calibration.
The future is much brighter for Mac laptop users with the introduction of the Thunderbolt connector on the latest MBP revisions. As with FireWire and ExpressCard, you can expect to see I/O devices, hard drives and monitors etc that will connect directly via that connection, greatly expanding the capabilities of a simple laptop setup. -
I'll need to dive into Color when I finish editing my one-hour long documentary in a couple months. The doc is intended to be shown on a large theatre screen one time, then broadcast on community-access television and lent through our regional public library system on DVD. My question(s): Can the Apple 30" Cinema Display be used for color grading? Or HP's 2480zx LCD Monitor? Would the Spyder3Elite Display Calibration product be useful? Thanks in advance.
Interestingly enough, the options for trying to push a computer text display into being a grade monitor are narrowing down to nothing. The harder people have been trying to make a silk purse out of these sow's ears has resulted in the inevitable conclusion that hey, there really is no such thing as free lunch. Even the vaunted ACD's after watching two of them for nearly three years now, can't hold a calibration for more than a couple of hours and then go magenta. Its because we need so much green to make D65 white. Those poor green dots just peter out and then red and blue take over. So you better be fast, because you will be working with a different monitor for the second half of the day.
An interesting thread on a pro telecine site has been discussing the HP Dreamcolor... the general conclusion is that it is probably great for a cubicle farm full of compositing and animation artists who more need a match between them than truly accurate colorimetry. At least its consistent. A high end grading device company member warned against using certain types of "probes", since at varying resolutions of display, you really have no idea what the thing is integrating to come up with a white point.
One of the really huge things that is missing is the ENVIRONMENT that the grade is taking place in. Sure, the monitor is important... but almost equally so is the room in which it is situated... its ambient illumination and the requirement for a constant contrast neutral 18% D65 background against which to judge the monitor itself, not just what it is trying to display.
That's one of the reasons that the COLOR GUI is that "ugly" grey.... even though its probably not grey at all if the monitor you're using to display it is whacked. Every time you look at it... it is influencing the balance of your target image. Imagine you're the beer taster at the world's finest brewery.... and what (hold on a minute while I savour the fantasy.... okay, I'm back) but between samples you take a big gulp of vinegar. Right. Is that going to work?
jPo -
Facing problem in using JEditorPane as renderer for JList
I am trying to use JEditorPane as renderer for a list. But I am facing some problems. First problem is the output in the editorpane is not shown properly. I want to show a html file, but only portion of the first line that is viewable in the editorpane is shown. I, of course, need to show the total content of the file. Again sometimes the editorpane looks blank. If I click on the list then some text are shown in the editor pane. Please help me to overcome these problems.
Here goes the code for the renderer.
list.setCellRenderer(new ListCellRenderer() {
private JEditorPane editor = new JEditorPane();
public Component getListCellRendererComponent(JList mList, Object value, int index,
boolean isSelected, boolean hasFocus) {
try {
editor.setPage("file://localhost/C:/networks/network1/description.html");
editor.setBackground(isSelected ? mList.getSelectionBackground() : mList.getBackground());
editor.setForeground(isSelected ? mList.getSelectionForeground() : mList.getForeground());
editor.setBorder(BorderFactory.createRaisedBevelBorder());
editor.setOpaque(true);
} catch(Exception e) {
e.printStackTrace();
return editor;
});hai ahmad,
it could be bcoz of the size of the pane.... the size content might be too large to fit in that pane....... y dont u increase the width of the pane..
or set the size of the pane..... its surely bcoz of the size only....
hope this helps u...... or else revert back for further clarifications...
Regards,
Ciya.
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