Away3D Forum Issue with transparency/alpha

Julien, Newbie
Posted: 04 October 2012 08:37 PM Total Posts: 2

Hi!

I am new with away3D and am experiencing some of its functionalities at the moment, and I already got stuck at one. I followed a tutorial (that I can’t seem to find again…damn) to import a .3ds mesh I created in blender, and successfully applied a texture over it, but I cannot find out how to change its alpha value.

Should it happen at this moment?

function loadModel3D():void
{
    _objLoader = new Max3DS();
 
    // redimentionner le modèle 3D, multiplie par 8 sa taille
    _objLoader.scaling = 8;
    // analyse le fichier 3DS pour en faire un ObjectContainer3D
    _model3D = _objLoader.parseGeometry(_model3DLoader.data) as ObjectContainer3D;
 
 // récupère le premier enfant de _model3D pour lui appliquer la texture
 (_model3D.children[0] as Mesh).material =  new BitmapFileMaterial("texture_crystal3.png");
 
 // lisse la texture
 ((_model3D.children[0] as Mesh).material as BitmapFileMaterial).smooth = true;
 
    // ajoute _model3D sur Scene3D puis on le place bien
    _scene.addChild(_model3D);
    _model3D.rotationX = -90;
    _model3D.y = 10;
 
    addEventListener(Event.ENTER_FRAME, refresh);
} 

I am also wondering whether it is normal that my shape isn’t transparent, since it was in blender…

Any idea? I guess it’s normal to be a bit confusing while trying something new

Thank you in advance for your help.

julien.

P.S. : I join my .fla with the post, but without the shape and the texture which I guess aren’t needed.

File Attachments

CrystalTest4.fla (File Size: 6KB - Downloads: 0)

Julien, Newbie
Posted: 04 October 2012 08:37 PM Total Posts: 2 [ # 1 ]

Maybe I am missing a library?

Drones, Newbie
Posted: 05 October 2012 04:45 PM Total Posts: 3 [ # 2 ]

Hi, i’m having the same problem.
Can’t find a way to change the alpha of the .3ds model.

alihm, Jr. Member
Posted: 05 October 2012 05:30 PM Total Posts: 49 [ # 3 ]

You need to change materials alpha property:
your_material.alpha=0.5;

Drones, Newbie
Posted: 05 October 2012 05:30 PM Total Posts: 3 [ # 4 ]

But the material is loaded with the 3ds model.

80prozent, Sr. Member
Posted: 05 October 2012 05:45 PM Total Posts: 430 [ # 5 ]

use your loadet mesh to access the material


yourLoadetMesh.material.alpha=0.5;

if you have multiple submeshes do this:

for (var i:int=0;i<yourLoadetMesh.subMeshes.length;i++){
yourLoadetMesh.subMeshes[i].material.alpha=0.5;} 

Signature

sorry…i hope my actionscript is better than my english…

Drones, Newbie
Posted: 05 October 2012 05:53 PM Total Posts: 3 [ # 6 ]

I’m using the 4.0.9 Gold version, and in this version the Mesh.material does not have the .alpha property, only the alphaPremultiplied property, that is a boolean.

Thanks for your help!

80prozent, Sr. Member
Posted: 05 October 2012 06:02 PM Total Posts: 430 [ # 7 ]

just downloadet the 4.0.9 gold zip from the download site.

the ColorMaterial and the TextureMaterial both got alpha properties.

try this:


TextureMaterial(yourLoadetMesh.material).alpha=0.5;

hope that helps

Signature

sorry…i hope my actionscript is better than my english…

alihm, Jr. Member
Posted: 06 October 2012 04:06 PM Total Posts: 49 [ # 8 ]

try this code:

var _loader:Loader3D = new Loader3D();
_loader.addEventListener(LoaderEvent.RESOURCE_COMPLETE, onModelLoaded);
_loader.load(your_model);


function onModelLoaded(e : LoaderEvent):void
{
   _loader.removeEventListener(LoaderEvent.RESOURCE_COMPLETE, onModelLoaded);


 for (var i:int = 0; i < _loader.numChildren; i++)
 {
  var mesh:Mesh = Mesh(_loader.getChildAt(i));
  //do anything you want with your mesh
  var material:TextureMaterial = mesh.material as TextureMaterial;
  //do anything you want with material
  material.alpha= 0.5;
 }
   
} 

hope it helps

Issue with transparency/alpha Software: Away3D 4.x

Julien, Newbie Posted: 04 October 2012 08:37 PM Total Posts: 2 Hi! I am new with away3D and am experiencing some of its functionalities at the moment, and I already got stuck at one. I followed a tutorial (that I can’t seem to find again…damn) to import a .3ds mesh I created in blender, and successfully applied a texture over it, but I cannot find out how to change its alpha value. Should it happen at this moment? function loadModel3D():void { _objLoader = new Max3DS(); // redimentionner le modèle 3D, multiplie par 8 sa taille _objLoader.scaling = 8; // analyse le fichier 3DS pour en faire un ObjectContainer3D _model3D = _objLoader.parseGeometry(_model3DLoader.data) as ObjectContainer3D; // récupère le premier enfant de _model3D pour lui appliquer la texture (_model3D.children[0] as Mesh).material = new BitmapFileMaterial("texture_crystal3.png"); // lisse la texture ((_model3D.children[0] as Mesh).material as BitmapFileMaterial).smooth = true; // ajoute _model3D sur Scene3D puis on le place bien _scene.addChild(_model3D); _model3D.rotationX = -90; _model3D.y = 10; addEventListener(Event.ENTER_FRAME, refresh); } I am also wondering whether it is normal that my shape isn’t transparent, since it was in blender… Any idea? I guess it’s normal to be a bit confusing while trying something new Thank you in advance for your help. julien. P.S. : I join my .fla with the post, but without the shape and the texture which I guess aren’t needed. File Attachments CrystalTest4.fla (File Size: 6KB - Downloads: 0)
Julien, Newbie Posted: 04 October 2012 08:37 PM Total Posts: 2 [ # 1 ] Maybe I am missing a library?
Drones, Newbie Posted: 05 October 2012 04:45 PM Total Posts: 3 [ # 2 ] Hi, i’m having the same problem. Can’t find a way to change the alpha of the .3ds model.
alihm, Jr. Member Posted: 05 October 2012 05:30 PM Total Posts: 49 [ # 3 ] You need to change materials alpha property: your_material.alpha=0.5;
Drones, Newbie Posted: 05 October 2012 05:30 PM Total Posts: 3 [ # 4 ] But the material is loaded with the 3ds model.
80prozent, Sr. Member Posted: 05 October 2012 05:45 PM Total Posts: 430 [ # 5 ] use your loadet mesh to access the material `yourLoadetMesh.material.alpha=0.5;` if you have multiple submeshes do this: `for (var i:int=0;i<yourLoadetMesh.subMeshes.length;i++){ yourLoadetMesh.subMeshes[i].material.alpha=0.5;}` Signature sorry…i hope my actionscript is better than my english…
Drones, Newbie Posted: 05 October 2012 05:53 PM Total Posts: 3 [ # 6 ] I’m using the 4.0.9 Gold version, and in this version the Mesh.material does not have the .alpha property, only the alphaPremultiplied property, that is a boolean. Thanks for your help!
80prozent, Sr. Member Posted: 05 October 2012 06:02 PM Total Posts: 430 [ # 7 ] just downloadet the 4.0.9 gold zip from the download site. the ColorMaterial and the TextureMaterial both got alpha properties. try this: `TextureMaterial(yourLoadetMesh.material).alpha=0.5;` hope that helps Signature sorry…i hope my actionscript is better than my english…
alihm, Jr. Member Posted: 06 October 2012 04:06 PM Total Posts: 49 [ # 8 ] try this code: var _loader:Loader3D = new Loader3D(); _loader.addEventListener(LoaderEvent.RESOURCE_COMPLETE, onModelLoaded); _loader.load(your_model); function onModelLoaded(e : LoaderEvent):void { _loader.removeEventListener(LoaderEvent.RESOURCE_COMPLETE, onModelLoaded); for (var i:int = 0; i < _loader.numChildren; i++) { var mesh:Mesh = Mesh(_loader.getChildAt(i)); //do anything you want with your mesh var material:TextureMaterial = mesh.material as TextureMaterial; //do anything you want with material material.alpha= 0.5; } } hope it helps

Issue with transparency/alpha

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