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Enable head tracking for AR avatar example #130

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Merged
merged 2 commits into from
Feb 10, 2025
Merged

Enable head tracking for AR avatar example #130

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7f07fb0
Enable head tracking for AR avatar example
willeastcott Feb 10, 2025
169915c
Tweaks
willeastcott Feb 10, 2025
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4 changes: 2 additions & 2 deletions examples/ar-avatar.html
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@
<!-- Scene -->
<pc-scene>
<!-- Camera -->
<pc-entity name="camera" position="0 0 1">
<pc-entity name="camera">
<pc-camera clear-color="0 0 0 0" fov="80"></pc-camera>
<pc-scripts>
<pc-script name="cameraFeed"></pc-script>
Expand All @@ -37,7 +37,7 @@
<pc-light></pc-light>
</pc-entity>
<!-- Raccoon Avatar -->
<pc-entity name="raccoon" scale="-1 1 1">
<pc-entity name="raccoon" scale="100 100 100">
<pc-model asset="raccoon"></pc-model>
<pc-scripts>
<pc-script name="morphUpdate"></pc-script>
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2 changes: 1 addition & 1 deletion examples/assets/scripts/camera-feed.mjs
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Expand Up @@ -13,7 +13,7 @@ export class CameraFeed extends Script {
* @type {boolean}
* @attribute
*/
mirror = true;
mirror = false;

/**
* @type {HTMLVideoElement|null}
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12 changes: 11 additions & 1 deletion examples/assets/scripts/face-landmarks.mjs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import { FaceLandmarker, FilesetResolver } from '@mediapipe/tasks-vision';
import { Script } from 'playcanvas';
import { Mat4, Script } from 'playcanvas';

export class FaceLandmarks extends Script {
/** @type {FaceLandmarker} */
Expand Down Expand Up @@ -27,6 +27,16 @@ export class FaceLandmarks extends Script {
if (video && video.readyState >= HTMLMediaElement.HAVE_ENOUGH_DATA) {
const detections = this.faceLandmarker.detectForVideo(video, Date.now());
if (detections && detections.faceBlendshapes) {
if (detections.facialTransformationMatrixes.length > 0) {
const { data } = detections.facialTransformationMatrixes[0];
const matrix = new Mat4();
matrix.set(data).invert();
const position = matrix.getTranslation();
const rotation = matrix.getEulerAngles();
this.entity.setPosition(position);
this.entity.setEulerAngles(rotation);
}

if (detections.faceBlendshapes.length > 0) {
const { categories } = detections.faceBlendshapes[0];
this.app.fire('face:blendshapes', categories);
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