[solved]how to get boundingbox info of a parent mesh with all children size

[lhx880619]

hi all,

i'm trying to calculate the boundingbox of a parent mesh, so that i may get a good camera asprect.

but failed to get the boundingbox size of the parent. are there any tricks there?

pg http://www.babylonjs-playground.com/#QVIDL9

 

// Our built-in 'sphere' shape. Params: name, subdivs, size, scene
    var sphere = BABYLON.Mesh.CreateSphere("sphere1", 16, 2, scene); 
    // Move the sphere upward 1/2 its height
    sphere.position.y = 1;

    // Our built-in 'ground' shape. Params: name, width, depth, subdivs, scene
    var ground = BABYLON.Mesh.CreateGround("ground1", 6, 6, 2, scene);
   

    var parent = new BABYLON.Mesh("parent",scene);
    sphere.parent = parent;
    ground.parent=parent;
    parent.showBoundingBox =true;  

 

[Gijs]

You could add the child bounding boxes together like this:

http://www.babylonjs-playground.com/#QVIDL9#1

[lhx880619]

@Gijs it means we should calculate the boxinfo manually? i suppose there's something like updateBoundingbox() function for parent mesh to auto update the boundingbox.

[Gijs]

I seems that the bounding box is only calculated for the parent mesh and its submeshes, so for the children you have to do it manually. But you can put the code away in a function you replace refreshBoundingInfo with:

http://www.babylonjs-playground.com/#QVIDL9#3

[adam]