Load images in runtime

Hi.
I am trying to create empty movieClips in runtime and load
images to them. My problem is that it results in some performence
problem.
The thing is that I load images from a digital camera and
each image is about 1MB. First of all, that takes a long time to
load. Then i change the _x/_y scale so that the images becomes
thumbnails. (Does the image remain 1MB when i use scale, or does
Flash make the filesize smaller?)
Next problem is that i want to use "duplicateMovieClip" on
those thumbnails and start drag the copy. It doesn't seems to work
with "duplicateMovieClip" on dynamic created mc so I need to make a
new emptyMC and load the image into it. That takes about a second.
Is it possible to create a movieClip to the library in
runtime and then use attachMovie() for every new instance that i
want to create?
I hope you understand my problem.
/Antewik

Hi,
> (Does the image remain 1MB when i use scale, or does
Flash make the filesize smaller?)
It's the same picture, just scaled down, so it will remain 1
MB. Maybe there are thumbnail versions stored in the camera, which
could be loaded instead the full image. Not sure about that...
> It doesn't seems to work with "duplicateMovieClip" on
dynamic created mc so I need to make a new emptyMC and load >
the image into it. That takes about a second.
Yep, dynamically loaded content cannot be duplicated. Flash
should load it the 2nd time from the cache though, so it should be
faster than the first loading.
> Is it possible to create a movieClip to the library in
runtime and then use attachMovie() for every new instance that i
> want to create?
No, afaik you can't add items to the library at runtime. You
could add an MC in the Flash IDE and use this with attachMovie(),
but I doubt that this will be faster than createEmptyMovieClip().
Could be worth a try though.
hth,
blemmo

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symbol : method PaintOff (int)
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^
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Hi!
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:) jen

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any ideas?
any help is very appreciates!
thanks
Rob

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Hi,
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I was just fiddling with TestStand and found that if I select Advanced Settings and check Always Run VI in LabVIEW Run-Time Engine, it will load. But if I uncheck that, it will not. WTF?
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Library.zip ‏30 KB

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How do i load images from a folder?

Hello everyone,
Please can someone help me as i am stuck.
I am trying to research loading images from a folder called /images/unknown (unknown is a customer number and is stored in a variable called customerNo).
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irknappers wrote:
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    FileFilterType(String[] types) {
        this.types = types;
    public boolean accept(File file) {
        for (String type : types) {
            if ( file.getName().toLowerCase().endsWith( type.toLowerCase() ) ) {
                return true;
        return false;
}

Loading Images into Applets

I've been having problems loading an image into an Applet. I've found that when the getImage() call is put into the init() method it loads the image fine, also implementing an imageUpdate call. However, now I'm trying to expand on this by putting it into a button click, it hangs indefinitely while waiting for the image to load.
Another interesting point I've noticed is that the Canvas subclass ImageSegmentSelector uses a PixelGrabber in its constructor to put the Image into a buffer - when this class is created from the imageUpdate() call, NOT the init() call, the grabPixels() call hangs indefinitely too!!
Any feedback, please,
Jonathan Pendrous
import java.applet.*;
import java.net.*;
import jmpendrous.util.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
public class XplaneGlobalSceneryDownloader extends Applet implements ActionListener{
ImageSegmentSelector worldMap;
Image img;
URL url;
int longtitude = 36;
int latitude = 18;
boolean imageLoaded;
TextField t1, t2,t3;
Label l1,l2,l3;
Button b1;
Applet a1;
public void init() {
a1 = this;
l1 = (Label) add(new Label("Number of horizontal sections: "));
t1 = (TextField) add(new TextField("45",3));
l2 = (Label) add(new Label("Number of vertical sections: "));
t2 = (TextField) add(new TextField("45",3));
l3 = (Label) add(new Label("URL of image file: "));
t3 = (TextField) add(new TextField("file:///C:/java/work/xplane_project/source/world-landuse.GIF",60));
b1 = (Button) add(new Button("Load image"));
b1.addActionListener(this);
validate();
// THIS CODE WORKS FINE ...
/*try { url = new URL("file:///C:/java/work/xplane_project/source/world-landuse.GIF"); }
catch(MalformedURLException e) { System.exit(0);   }
img = getImage(url);
//int w=img.getWidth(this);
while(imageLoaded==false) { try { Thread.sleep(1000);   } catch(InterruptedException e) {System.exit(0);    } }
worldMap = new ImageSegmentSelector(this, img, longtitude, latitude);
add(worldMap);
//resize(worldMap.getWidth(), worldMap.getHeight());
validate();*/
//repaint();
//worldMap = new ImageSegmentSelector(this, img, longtitude, latitude);
//repaint();
public void actionPerformed(ActionEvent e) {
try { longtitude = Integer.parseInt(t1.getText()); } catch (NumberFormatException ex) {System.exit(0); }
try { latitude = Integer.parseInt(t2.getText()); } catch (NumberFormatException e2) {System.exit(0); }
try { url = new URL(t3.getText()); }
catch(MalformedURLException e3) { System.exit(0);   }
img = getImage(url);
//int w=img.getWidth(this);
while(imageLoaded==false)
{ try { Thread.sleep(1000);   } //KEEPS ON LOOPING
catch(InterruptedException e4) {System.exit(0);    } }
worldMap = new ImageSegmentSelector(a1, img, longtitude, latitude);
add(worldMap);
//resize(worldMap.getWidth(), worldMap.getHeight());
validate();
public boolean imageUpdate(Image i, int flags, int x, int y, int w, int h){
// THIS NEVER GETS CALLED AT ALL //
if (((flags & ImageObserver.WIDTH) != 0) && ((flags & ImageObserver.HEIGHT) != 0)) {
//worldMap = new ImageSegmentSelector(this, i, longtitude, latitude);
//add(worldMap);
//validate();
//repaint();
imageLoaded = true;
return false;
return true;
}

Sorry, thought this had been lost.
You can load a file if the applet itself is run from the local filesystem - it loads it fine from the init(), but not otherwise. But I haven't got the applet to run from a browser yet without crashing (it's OK in the IDE debugger), so that's the next step.

Load images in runtime

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