Babylon.js/gui/src/3D/controls/planePanel.ts

import { TmpVectors, Vector3 } from "babylonjs/Maths/math.vector";

import { Container3D } from "./container3D";
import { Control3D } from "./control3D";
import { VolumeBasedPanel } from "./volumeBasedPanel";

/**
 * Class used to create a container panel deployed on the surface of a plane
 */
export class PlanePanel extends VolumeBasedPanel {
    protected _mapGridNode(control: Control3D, nodePosition: Vector3) {
        let mesh = control.mesh;

        if (!mesh) {
            return;
        }

        control.position = nodePosition.clone();
        let target = TmpVectors.Vector3[0];

        target.copyFrom(nodePosition);

        switch (this.orientation) {
            case Container3D.FACEORIGIN_ORIENTATION:
            case Container3D.FACEFORWARD_ORIENTATION:
                target.addInPlace(new Vector3(0, 0, 1));
                mesh.lookAt(target);
                break;
            case Container3D.FACEFORWARDREVERSED_ORIENTATION:
            case Container3D.FACEORIGINREVERSED_ORIENTATION:
                target.addInPlace(new Vector3(0, 0, -1));
                mesh.lookAt(target);
                break;
        }

    }
}