Does needle recognize vertical planes in ar mode?

Hi guyss, hope u r doing well :smile:
I have another question, if I deploy to glitch and use ar mode, is it possible to track vertical planes to place something like a painting on a wall?

Original Post on Discord

by user 771724594846367796

Hello, currently WebXR plane detection is not implemented by default so we donโ€™t have support for planes right now. GitHub - immersive-web/real-world-geometry: Additions to WebXR Device API for exposing real world data (Lead: Piotr Bialecki). Plane detection:

But what you can do is get the XRSession and use hit testing to detect โ€œverticalโ€ surfaces. Have a look at the WebXR.ts script at line 561 (this is where the AR reticle is updated)

hi @marcel :cactus:

by user 771724594846367796

Hereโ€™s some code that you need to add it:

first get the hit test source for the viewer

session.requestReferenceSpace('viewer').then((referenceSpace) => {
            session.requestHitTestSource({ space: referenceSpace }).then((source) => {
                this.hitTestSource = source;

then you can use that to hit test (the XRFrame is the first argument in onBeforeRender(xrFrame)

const hitTestResults = frame.getHitTestResults(this.hitTestSource);
        if (hitTestResults.length) {
            const hit = hitTestResults[0];
            const referenceSpace = this.webxr.context.renderer.xr.getReferenceSpace();
            if (referenceSpace) {
                const pose = hit.getPose(referenceSpace);
                this.sessionRoot?.onUpdate(this.webxr.Rig, session, pose);

                if (this.reticle) {
                    this.reticle.visible = this.reticleActive;
                    if (this.reticleActive) {
                        if (pose) {
                            const matrix = pose.transform.matrix;
                            if (this.webxr.Rig)


hope that helps to get you started. And hello @erik_scant :slightly_smiling_face:

to look at the script you can just click this blue link

ty very much @marcel :cactus: iโ€™m gonna take a look at it in my free time :smile:

by user 771724594846367796