Question about ID of merged meshes

Questions
1

Hi there,

in my current project I need to tell BJS the names (actually IDs) of meshes, that I want to create.
The names are chosen by my App like this:

var srmName = null;     // mesh ID für die RBGs
var lhaName = null;     // mesh ID für die LAMs

for (var middleValue = 0; middleValue <= aislePositionsZ.length - 2; middleValue++){

    srmName = "SRM-" + middleValue;             // Nummerierung RBGs
    lhaName = "LHA-" + middleValue;             // Nummerierung LAMs

    srmX = aislePositionsZ[middleValue];

    let newSRM = new SRM(srmX, srmY, srmZ, srmName, lhaName, multiMaterial, rackRowLength, scene);
        newSRM.drawSRM();

};

My problem is, that my class creates merged meshes which IDs are like “(…)_merged”.
The first part of a merged mesh´s ID is based on the ID of the first mesh in my “merging array”.

My code is like:

var finalLHA = BABYLON.Mesh.MergeMeshes(lhaMerge, true, true, undefined, true);

I know 'I could use tag-system for this, but I want to know:

  1. How can I pick the ID by myself when I create a merged mesh?

  2. Is there a way to change a mesh´s ID?

Thanks,
Topper

1 Like
2

Hey! you can change mesh.name and mesh.id at will :slight_smile:

you can also consider using mesh.uniqueId which is guarantee to be unique across the scene

1 Like
3

https://www.babylonjs-playground.com/#1IDZCU#10

Wingnut goofing around, as usual. :slight_smile: Wingnut looks-over DK’s shoulder… to see if he is having a healthy lunch. :slight_smile: Are those… bison tacos?

3 Likes
4

I have one question, does uniqueId changes on each render or it remains same always?

5

Always the same :slight_smile:

6

I am using getTransformNodeByUniqueID to get my slider working, it works on my local host but when I run on another system the unique id number is different. I am not sure if unique id number generate randomly?

7

Ok gotcha…the uniqueID is unique PER session (ie every time you run the code)

maybe you can use id instead?

8

Ohh got it, thank you.

9

Works perfect. thanks.
Using your example. I wrote something as follow
var a = BABYLON.Mesh.MergeMeshes([m1, m2, m3]);
a.id = ‘WEB-’+tx+’-’+tz+’-’+hv;