Group

The Group component (Grouping Objects) organizes multiple objects together, applying transforms (position, rotation, scale) to all children at once. Essential for managing complex hierarchies and coordinated movement.

This is ideal for:

• Applying a single transform to multiple objects

• Moving/rotating/scaling objects together as a unit

• Creating object hierarchies

• Building reusable composite structures

Basic Example

This example shows the core purpose of Group: transforming multiple objects together. The group contains a box and sphere. When we animate the group’s rotation, both objects rotate together around the group’s origin.

import asyncio
from vuer import Vuer
from vuer.schemas import DefaultScene, Group, Box, Sphere, OrbitControls

app = Vuer()


@app.spawn(start=True)
async def main(sess):
    # Create a group with multiple objects
    sess.set @ DefaultScene(
        Group(
            Box(position=[1, 0, 0], args=[1, 1, 1], key="box"),
            Sphere(position=[-1, 0, 0], args=[0.3], key="sphere"),

            # Group transform applies to BOTH objects
            position=[0, 1, 0],
            rotation=[0, 0, 0],
            scale=1.0,
            key="my-group",
        ),
        bgChildren=[OrbitControls(key="OrbitControls")],
    )

    # Animate the entire group
    angle = 0
    while True:
        # Update group rotation - both box and sphere rotate together
        sess.update @ Group(
            rotation=[0, angle, 0],
            key="my-group",
        )

        angle += 0.02
        await asyncio.sleep(0.016)

How It Works

When you apply a transform to a Group:

1. Each child keeps its local position/rotation/scale relative to the group

2. The group’s transform is applied to all children together

3. Final position = group transform @ child local transform

Example: A box at [1, 0, 0] inside a group at [5, 0, 0] → final position: [6, 0, 0]