Using WWIcon for photos - extension needed?

[fabrizio.giudici]

Thanks to the hints by patmurris, I've been able to understand the usage of icons. I used them to put waypoints (path) and photos on WW.



In order to render photos, I had to do some changes to WW (by copying and changing two classes). In facts, WWIcon is based on a string path which points to an external picture resource, while my thumbnails are generated in-memory.

The changes are small - I think that they could be incorporated in WW for more flexibility. Anyone interested? Should I post them here?

[ghchinoy]

fabrizio,

great job. please do post them here. we can get the community to try to incorporate them into a running set of documentation.

h

[patmurris]

Keep in mind the WWJ SDK is a kind of pre-alpha version and a lot may evolve before a stable release comes out. So some of the code produced now may just break or become obsolete with future release.

Also, there is no clear protocol to submit code to the WWJ team at NLT...

[TomServo]

I am working on it... hopefully we can just setup something on the SF SVN.

[fabrizio.giudici]

Ok, I'll post the code this evening... see you later.

[fireblade]

what do you use to place your waypoints? UserFacingIcon ? I am am trying to plot waypoints in a seperate thread (to "simulate" real time) but if I play with the camera too much while my waypoints are being plotted they disappear. are you plotting your points in real time or just all at once?

[fabrizio.giudici]

Sorry for the delay, I've been busy. I'll try to post the code in the afternoon. See you later.

PS For waypoints, I have both things: plot everything at once and in sequence. Nevertheless I've got some troubles with the latter. See you later in the afternoon.

[fabrizio.giudici]

Here are the changes I suggest. As I anticipated, my problem is that WWIcon describes the image in terms of the "path" property, a string pointing to the image resource name. This is not good if you have a dynamic image which is created in memory or loaded from a different storage than the codebase.

So, first I suggest to add a method to WWIcon:

public BufferedImage getImage()

The IconRenderer class should be changed as follows:

1. The iconTextures cache should be indexed by Object and not by String

private java.util.HashMap<Object, Texture> iconTextures = new java.util.HashMap<Object, Texture>();

2. Changes in the drawIcon() method:

        Object key = icon.getImage();
        
        if (key == null)
        {
            key = icon.getPath();
        }
            
        Texture iconTexture = this.iconTextures.get(key);
        if (iconTexture == null)
            iconTexture = this.initializeTexture(dc, icon);

3. Changes in the initializeTexture() method:

            Texture iconTexture = null;
            BufferedImage image = icon.getImage();
            
            if (image != null)
            {
                iconTexture = TextureIO.newTexture(image, true);  
                this.iconTextures.put(image, iconTexture);
            }
            else
            {
              // ... the current code that loads the icon
            }

            iconTexture.bind();

3. Changes to the isIconValid() method:

        
if (icon == null || (icon.getPath() == null && icon.getImage() == null))
            return false;

The idea is that if getImage() returns null, the behaviour stays the same as now, that is the icon is loaded from the getPath() resource name; otherwise, the provided image is used.

My implementation can be found here:

https://bluemarine.dev.java.net/sour...=1968&view=log