HI Pawel , Hi Rob
Not sure if this will help but when I posted concerning the
"myObject.materialLibrary = null" issue I also noted that I had a
problem with the material names been stored with hidden characters .
MY OBJ files were also exported with Lightwave.
I fixed this by adding some string manipulation into the
prepareData method on the Obj class :
<code>
for (var ii:int = 0; ii < trunk.length; ii++) {
trunk[ii] =
trunk[ii].split("\n").join("").split("\r").join("").split("\n
\r").join("")
}
</code>
I added this in after line 57 where trunk value is set
Try see if this resolves your issue?
On 7/10/10, Rob Bateman <[email protected]> wrote:
> hmm, are you sure you have the right material name strings? sometimes they
> are altered in the file on export.
>
> to check material names, you can switch Away3D into debug mode by writing:
>
> Debug.active = true;
>
> at the top of your class. The trace output window should list all attributes
> of the imported obj file, including all material names.
>
> the myObject.materialLibrary = null has been fixed in a recent revision
>
>
> cheers
>
> Rob
>
>
> 2010/7/5 Paweł Stanisławczuk <[email protected]>
>
>> Hi Rob!
>>
>> I'm setting the material as you are saying, on the Obj parse before it
>> is used on an
>> obj file. And everything works fine.
>>
>> Once the obj file is loaded I cannot change the material.
>>
>> This is what I do:
>>
>> private function loadModels(matURL:String):void {
>>
>> objParser = new Obj();
>> objParser.material = new BitmapFileMaterial(matURL); // works good,
>> there is material on loaded obj file
>>
>> loader = new Loader3D();
>> loader.addOnSuccess(onSuccess);
>> loader.loadGeometry("my.obj", objParser);
>>
>> }
>>
>> function onSuccess(event:Event):void {
>>
>> _sceneMesh = loader.handle as Mesh;
>> _sceneMesh.scale(100);
>> _sceneMesh.rotationY = 180;
>> _sceneMesh.ownCanvas = true; //all props work
>> scene.addChild(_sceneMesh);
>>
>> loader.removeOnSuccess(onSuccess);
>>
>> MonsterDebugger.trace(this, _sceneMesh.material); //
>> WireColorMaterial (say what? ;) )
>> MonsterDebugger.trace(this, _sceneMesh.materialLibrary); //null
>>
>> MonsterDebugger.trace(this, objParser.material); //
>> BitmapFileMaterial
>> MonsterDebugger.trace(this, objParser.materialLibrary); //
>> MaterialLibrary (matFileName = null; mtlLoadRequired = false;,
>> textureLoadRequired = false; texturePath = null) only these props,
>> nothing more
>>
>> _sceneMesh.material = new WireframeMaterial(0xff0000); //does
>> nothing
>> objParser.material = new WireframeMaterial(0xff0000); //does nothing
>>
>> }
>>
>> I cannot do:
>> myObject.materialLibrary.getMaterial("myMaterialName").material =
>> myNew Material
>> because myObject.materialLibrary = null
>>
>> Also, this is null:
>> objParser.materialLibrary.getMaterial("myMaterialName") = null
>>
>> I'm using Lightwave as exporter of obj, maybe here is the problem?
>> maybe my obj are incorrect?
>>
>> Greetz
>> Paul
>>
>> On 2 Lip, 14:13, Rob Bateman <[email protected]> wrote:
>> > Hey Pawel
>> >
>> > if you can't get an mtl file for your obj, then you can always try
>> > overriding your materials with a single material for the entire obj
>> > file.
>> >
>> > the material property on the Obj parse can be set before it is used on
>> > an
>> > obj file. With this in place, all materials encountered in the file use
>> this
>> > material definition. So you can set it to BitmapMaterial,
>> ColorMaterial...
>> > whataver you want
>> >
>> > Once an obj file is loaded, the materialLibrary property on the parser
>> > or
>> > the returned away3d object hold the names of all materials defined in
>> > the
>> > obj format. If you want, you can set the material of each individually
>> > by
>> > doing something like:
>> >
>> > myObject.materialLibrary.getMaterial("myMaterialName").material = myNew
>> > Material
>> >
>> > This approach will preserve multiple materials in an obj loaded file
>> >
>> > hth!
>> >
>> > Rob
>> >
>> >
>> >
>> >
>> >
>> > On Fri, Jul 2, 2010 at 11:43 AM, Michael Iv <[email protected]>
>> wrote:
>> > > Let' me explain you.When you export obj with material on it from 3d
>> > > modelling program there is additional file being generated that is mtl
>> .It
>> > > holds references to materials and textures.If you have one then the
>> texture
>> > > will get loaded even automatically.That is the way .obj format works
>> >
>> > > 2010/7/2 Paweł Stanisławczuk <[email protected]>
>> >
>> > > Hi!
>> >
>> > >> I'm not using MTL, never did, they are not required. Don't think MTL
>> > >> have any connection with my problem.
>> >
>> > >> Paweł
>> >
>> > >> On 2 Lip, 12:01, Michael Iv <[email protected]> wrote:
>> > >> > Do you know that you need to have also MTL file with obj material
>> > >> > definitions?
>> >
>> > >> > Sent from my iPhone
>> >
>> > >> > On Jul 2, 2010, at 12:49 PM, Paweł Stanisławczuk
>> > >> <[email protected]
>> >
>> > >> > om> wrote:
>> > >> > > What is the proper way to apply material on loaded obj model?
>> >
>> > >> > > Obj loads good, everything works OK. I'm loading material this
>> way:
>> >
>> > >> > > initO:Object = {useGroups:false};
>> > >> > > var obj:Obj = new Obj(initO);
>> > >> > > obj.material = new BitmapFileMaterial("res/uv.jpg"); //this is
>> > >> > > the
>> > >> > > only one spot where the material can be applied
>> >
>> > >> > > loader = new Loader3D();
>> > >> > > loader.addOnSuccess(onSuccess);
>> > >> > > loader.loadGeometry("res/my.obj", obj);
>> >
>> > >> > > function onSuccess(event:Event):void {
>> >
>> > >> > > mesh = loader.handle as Mesh;
>> > >> > > mesh.scale(100);
>> > >> > > mesh.rotationY = 180;
>> >
>> > >> > > scene.addChild(mesh);
>> > >> > > }
>> >
>> > >> > > The only place (AFAIK) to apply material on loaded obj file is
>> > >> > > the
>> var
>> > >> > > obj:Obj parser. I tried to change material:
>> >
>> > >> > > loader.handle.material = new WireframeMaterial(0xff0000);
>> >
>> > >> > > But it does nothing.
>> >
>> > >> > > I tried with:
>> > >> > > function onSuccess(event:Event):void {
>> > >> > > initO:Object = {useGroups:true};
>> > >> > > var obj:ObjectContainer3D = (event.target.handle as
>> > >> > > ObjectContainer3D);
>> > >> > > mesh = obj.children[0] as Mesh;
>> > >> > > mesh.material = new WireframeMaterial(0xff0000);
>> > >> > > }
>> >
>> > >> > > Nothing.
>> >
>> > >> > > I also have tried this:
>> > >> > > var meshfaces = _sceneMesh.faces;
>> > >> > > for each (var i:Face in meshfaces.faces) {
>> > >> > > i.material = new ColorMaterial(0xFF00FF);
>> > >> > > }
>> >
>> > >> > > Still nothing.
>> >
>> > >> > > I always used:
>> >
>> > >> > > var _objLoader:Object3DLoader = Obj.load(_resourceURL,
>> > >> > > {material:_material, name:"OBJ", scaling:10});
>> >
>> > >> > > But now as I see its obsolete.
>> > >> > > I cannot use AWD because client would like to add models on his
>> own.
>> >
>> > >> > > Regards
>> > >> > > Paweł
>> >
>> > > --
>> > > Michael Ivanov ,Programmer
>> > > Neurotech Solutions Ltd.
>> > > Flex|Air |3D|Unity|
>> > >www.neurotechresearch.com
>> > >http://blog.alladvanced.net
>> > >http://www.meetup.com/GO3D-Games-Opensource-3D/
>> > > Tel:054-4962254
>> > > [email protected]
>> > > [email protected]
>> >
>> > --
>> > Rob Bateman
>> > Flash Development & Consultancy
>> >
>> > [email protected]
>>
>
>
>
> --
> Rob Bateman
> Flash Development & Consultancy
>
> [email protected]
> www.infiniteturtles.co.uk
> www.away3d.com
>
