Color Control on 3D object

Yes it is - you can change both colors and textures on any "node" within the scene using JavaScript.

See my Tech Talk for a detailed introduction:

http://adobechats.adobe.acrobat.com/p32622737/

Hi UVSAR and thanks,

I watch your Tech Talk and i see you change render mode. but i don't see anything about change color....

Can you help me please!!

Regards

The principles are the same for any materials in a scene - you can collect the material from a node using

var mtl = scene.meshes.getByName( "name_of_part" ).material;

or

mtl = scene.materials.getByName( "name_of_material" );

then use any of the properties defined in the SDK. For example to change the diffuse color to blue, you would call

mtl.diffuseColor.set( 0, 0, 1 );

Node colors are set using R, G and B values from 0 to 1.


or to import a bitmap from the resource array into the diffuse slot, you'd use

mtl.diffuseTexture.image = new Image( new Resource( "pdf://bitmap_file_name.jpg" ) );

Thanks,

i show that tomorrow

I don't know why but my code don't run.

There are need a context?
Or ohter things?


i test your code but it doesn't work....

The code must be run inside the 3D annotation (by embedding it via the 3D annotation's properties panel).

If you want to run it directly in the console or from a button.script in the document, you need to first connect to the 3D engine by running

var c3d = this.getAnnots3D(this.pageNum)[0].context3D;

or

var c3d = this.getAnnotsRichMedia(this.pageNum)[0].context3D;

(use the second one if you have any Flash content attached to the 3D model)



then use "c3d.scene" instead of "scene" in the example I posted above.

Very thanks to help me , UVSAR.... Its work.

Hi,
I know that we can change the part color using the approach you suggested. But I would like to know how do we reset it back to its original color.

-Nilesh

There is no built-in memory, so you must store the color in a variable before changing it, then use that variable to re-apply the previous value again.

Sample PDFs desmonstrating this functionality are available at:
http://microtype.com/showcase/3DAsst/PartColor.pdf
http://microtype.com/showcase/3DAsst/Hinge.pdf

Shlomo Perets, http://www.microtype.com

Thanks UVSAR & Shlomo for your help!-Nilesh

Is there a way to access the "resource array" of an annotation? I'm specifically looking for a way to add an image-file during runtime. In the document-script I used importDataObject to load the file (user has to pick the path to the image) which seems to work. I have also managed to load an image which already is a resource as diffuse texture. Now I want to combine both, hence

- letting the user load an image from local disk
- adding this image to the resources of a 3D-Annotation
- using the image as diffuse-texture
.

As mentioned, steps 1 and 3 seem to work. But how about step 2?

Hello,

Your Tech Talk and sample files were very helpful. Thank you.

I have successfully created a button to change the color of a mesh using the sample models you provided. But when I try to apply it to an imported Catia v5 model, this script does not work for me. The model does have color information on it. Please give me some advise on what I may be missing?

Applied to a button:

c3d = this.getAnnots3D(this.pageNum)[0].context3D;
matl = c3d.scene.meshes.getByName( "HULL-ABOVE" ).material;

matl.diffuseColor.set( 0, 0, 1 );

[object global]
ReferenceError: matl is not defined
1:Console:Exec
undefined

If you can't get the name shown in the model tree to return a mesh node using getByName, it means the model was imported using extended naming (something the API doesn't talk about but it happens with PRC models). The true name will be what's shown in the model tree, plus a huge random hex number. In those cases it's better to use getByIndex to identify each node.

You can check for extended naming by running a scan of your SceneObjectList :


c3d = this.getAnnots3D(this.pageNum)[0].context3D;
msh = c3d.scene.meshes;
for (var i = 0; i < msh.count; i++) {
console.println("Mesh at index " + i + " name = " + msh.getByIndex(i).name);
}


If you get things like

Mesh at index 0 name = RobotBase.ded5e77dd566fba7fe202cc59e4b467a1020ded5e77dd566fba7fe202cc59e4b464da02c30

that's the name the API is expecting you to use for getByName() even if the model tree says "RobotBase". No, you can't stop it happening, it's one of those quirks that make the 3D API so fun to use.

Thank you for your quick support.

I get a syntax error when I run:

c3d = this.getAnnots3D(this.pageNum)[0].context3D;
msh = c3d.scene.meshes;
for (var i = 0; i < msh.count; i++) {
console.println("Mesh at index " + i + " name = " + msh.getByIndex(i).name);
}
[object global]
SyntaxError: syntax error
1:Console:Exec
undefined

Im a novice with Java scripting, sorry for the trouble.

Hi again,

I re-imported the model with .u3d settings and now it WORKS!
Thank you so much!

hi,

I applied the color for particular item, but all objects color were changed. how to assign the material for particular item

You can't - material assignments within a 3D scene are not editable in Acrobat. You must recreate the 3D model with different materials on each item, so you can target them individually with your scripts.

hi uvsar,

how to create playrange in prc type animation in acrobat. a little more help is very useful to me