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Shadow on decalMesh


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Hi again,


here an over problem I don't understand.
In my projet (a strategy game) when I construct a new building I put on the floor a decal, but this decal look's like very dark when normal vector is positive, and when is negative no shadow cast on it...

Here the code :


// Material

    this.tabMateriaux['solChateau']                                                    = new BABYLON.StandardMaterial("solChateau",scene);
    this.tabMateriaux['solChateau'].diffuseTexture                          = new BABYLON.Texture("3d/terrain/images/solChateau.png",scene);
    this.tabMateriaux['solChateau'].diffuseColor                             = new BABYLON.Color3(1, 1, 1);
    this.tabMateriaux['solChateau'].diffuseTexture.hasAlpha        = true;       

// Placement décal
        var taille             = new BABYLON.Vector3((this.maxX-this.minX)*_CONST_TAILLE_CARREAU__,(this.maxZ-this.minZ)*_CONST_TAILLE_CARREAU__,(this.maxZ-this.minZ)*_CONST_TAILLE_CARREAU__);
        var sol                = BABYLON.Mesh.CreateDecal("decal", ground, new BABYLON.Vector3(this.mesh[0].position.x,this.mesh[0].position.y,this.mesh[0].position.z),new BABYLON.Vector3(0,-1,0), taille);
        sol.position.y  += 1;
        sol.receiveShadows     = true;
        sol.material         = controleurObjet.tabMateriaux['floor'].getSubMaterial(this.indexSubMatSol);

I put in attachment a picture to be more clear.


have a nice day :)


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