How to know on which mesh one skeleton is linked?

[snot224]

Hi all,

i'm back from a long time, and I update from v2.3 to v2.4 and my code don't work anymore ...
I just want to know here how to identify and be sure to link correct skeleton with the correct mesh ?

Here the example to explain my problem :

In 3DSMax, I create an house with 6 objects, on this house I put bones (55 bones) and somes animations (After export it represent 6 skeletons).

Now, I would like to import them in Babylon, BUT when I tryed to start animation, black screen appear, and this console log :
TypeError: Argument 3 is not valid for any of the 3-argument overloads of WebGLRenderingContext.uniformMatrix4fv.[En savoir plus]


Here my code, that worked fine in v2.3 but don't work anymore in v2.4, and same kind of code work fine with less complexe modele (1 meshe for 1 skeleton)

// code d'importation et de sauvegarde
BABYLON.SceneLoader.ImportMesh("",dossier,fichier,scene,function(mesh, particleSystems, skeletons)
{
        controleurObjet.tabModele[name].mesh                = [];
        controleurObjet.tabModele[name].bone                = [];
        var i;
      
        // On rajoute uniquement les éléments visible (pas les structures)          
        for (i=0;i<mesh.length;i++)
        {
             if(mesh[i].isVisible)
             {
                 controleurObjet.tabModele[name].mesh.push(mesh[i]);
                 // On marque le modèle de départ
                 mesh[i].isVisible                  = false;
             }
         }
              
         for (i=0; i<skeletons.length;i++)
         {
             controleurObjet.tabModele[name].bone.push(skeletons[i]);
         }
}


// clonage
for (i=0 ; i<controleurObjet.tabModele[this.type].mesh.length ; i++)
{
    this.mesh[i] = controleurObjet.tabModele[this.type].mesh[i].clone(this.name+'_'+i);
    this.parametrage(i);
}
	
for (i=0 ; i<controleurObjet.tabModele[this.type].bone.length ; i++)
{
    this.mesh[i].skeleton = controleurObjet.tabModele[this.type].bone[i].clone(this.name+'_'+i);
}


// Start animation de construction
for (var i=0;i<this.mesh.length;i++)
{
	if (this.mesh[i].skeleton)
	{
		scene.beginAnimation(this.mesh[i].skeleton,0,10, false, 1);
	}
}

I know that the problem comes because I only keep visible meshes, but If I delete the line "if(mesh.isVisible)", no animation working, and If I keep this line, error above apear ..

Someone could explain to me how to know on which mesh I could link correct skeleton ?

 

[xaero59]

Not sure if 3ds exporter works like blender one, but I found out that when I import meshes with an armature ( from a blender exported babylon file ) , the skeleton is automaticaly applied to the mesh that are set to use the armature defined in my blender scene.

You should check if it's the same by doing

console.log(mesh[i].skeleton)

in your very first for...loop , if it's the case then you can do all the cloning without keeping skeletons in a separate array.

[GameMonetize]

@xaero59 is right. You can go through all meshes and test mesh.skeleton

[snot224]

I found the error, but it look like very strange ...

in the function "parametrage" that I call in the first part (here the code)

Batiment.prototype.parametrage = function(id)
{		
	this.mesh[id].scaling 		= new BABYLON.Vector3(0.07,0.07,0.07);
	
	// Paramètre
	this.mesh[id].checkCollisions	= true;
	this.mesh[id].receiveShadows	= true;
	this.mesh[id].visibility	= 1;
	
	this.mesh[id].isVisible		= true;
	
		
	shadowGenerator.getShadowMap().renderList.push(this.mesh[id]);
};

when I comment the line of the shadowGenerator, no more error, animations works. but, no more shadow for the meshs...

I just update to v2.5 and same things.

Here the error log :
TypeError: Argument 3 is not valid for any of the 3-argument overloads of WebGLRenderingContext.uniformMatrix4fv.[En savoir plus]  babylon-2.5.js:5:4857
    s.prototype.setMatrices babylon-2.5.js:5:4857
    t.prototype.setMatrices babylon-2.5.js:15:26904
    t/a babylon-2.5.js:7:29664
    t/this._shadowMap.customRenderFunction babylon-2.5.js:7:30065
    t.prototype.render babylon-2.5.js:10:29895
    t.prototype.render babylon-2.5.js:10:27206
    i.prototype.renderToTarget babylon-2.5.js:15:3280
    i.prototype.render babylon-2.5.js:15:2586
    i.prototype._renderForCamera babylon-2.5.js:12:3526
    i.prototype._processSubCameras babylon-2.5.js:12:5901
    i.prototype.render babylon-2.5.js:12:10034
    creerJeu/</<  nko.js:265:5
    s.prototype._renderLoop babylon-2.5.js:4:23094
    bound  self-hosted

The strangest thing is that for all over objects (using exactly the same shadowGenerator), shadow works fine.

[snot224]

Here how I declare the ShadowGenerator

// ********************************************************
// Shadow
// ********************************************************
shadowGenerator 				= new BABYLON.ShadowGenerator(4096,shadowLight);
shadowGenerator.useVarianceShadowMap 	        = true;
shadowGenerator.usePoissonSampling 		= true;
shadowGenerator._darkness		        = -0.8;
shadowGenerator.bias 				= 0.0001;
shadowGenerator.getShadowMap().anisotropicFilteringLevel = __CONST_ANISOTROPIC__;

 

[GameMonetize]

Hello

we need a PG (Playground) that reproduces this issue to help you

[xaero59]

Try that : Make sure that your scene object is accessible anywhere in your code, then in your function

Batiment.prototype.parametrage

Replace :

shadowGenerator.getShadowMap().renderList.push(this.mesh[id]);

By :

yourSceneObject.executeWhenReady(function() { shadowGenerator.getShadowMap().renderList.push(this.mesh[id]); });

You should do this for anything that requires the mesh to be already in the render loop ( particles emitter , octree etc.. ) , I had the issue once and it's very hard to reproduce because it depends of how fast your browser performs.

[snot224]

2 hours ago, xaero59 said:

Try that : Make sure that your scene object is accessible anywhere in your code, then in your function

Batiment.prototype.parametrage

Replace :

shadowGenerator.getShadowMap().renderList.push(this.mesh[id]);

By :

yourSceneObject.executeWhenReady(function() { shadowGenerator.getShadowMap().renderList.push(this.mesh[id]); });

You should do this for anything that requires the mesh to be already in the render loop ( particles emitter , octree etc.. ) , I had the issue once and it's very hard to reproduce because it depends of how fast your browser performs.

YES, thanks so mush ! It is the good solution !

Thanks man

I understand now why sometime it worked and sometime no, and why when I delete some object it works (because it take less time to be ready !

Thanks again, I could take the next step