Find mesh with userData

Discussion
1

Hello, Everyone. Hope you are doing well.
I have created some cubes and added info in their user data.
And then I would like to get mesh with this info.
I think I could get using this but it didn’t work.
let mesh = scene.getMeshesByUserdata();

Is there any solution for this?
Thanks

2

There is no such a method like you have used “getMeshesByUserdata”

Still you can find mesh using userdata.

You have to write that function using loop.

May be, you can use traverse function

3

When adding userData to a mesh, add it to an array while adding to the scene.

4 
let mesh=[];


OBJLoader.load("models/common.obj",function(object){
while(object.children.length){
var name=object.children[0].name;
mesh[name]=object.children[0];
mesh[name].matrixAutoUpdate=false;
mesh[name].updateMatrixWorld=function(){};
scene.add(mesh[name]);
}
mesh["home"].geometry.computeBoundingBox();
mesh["mountain"].visible=false;
});
5

This is a generic solution you can tweak it to fit your exact use case.

const meshes = getMeshesByUserdata(scene, prop,  value)

function getMeshesByUserdata(root, prop, value) {
    const result = [];

    root.traverse(object => {
        if(object.userData 
           && object.userData.hasOwnProperty(prop) 
           && object.userData[prop] === value)
           result.push(object);
    });

    return result;
}
1 Like
6

I’d just use the plain old-school vanilla scene.children.filter(...).