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
