Enumeration SurfaceClassificationExperimental Wearable Only

Example

const WorldQueryModule =
    require("LensStudio:WorldQueryModule") as WorldQueryModule;

@component
export class HitTestClassification extends BaseScriptComponent {

    private hitTestSession: HitTestSession;

    onAwake() {
        this.hitTestSession = this.createHitTestSession();

        this.createEvent("UpdateEvent").bind(this.onUpdate);
    }

    createHitTestSession() {
        const options = HitTestSessionOptions.create();
        options.classification = true;

        const session =
            WorldQueryModule.createHitTestSessionWithOptions(options);
        return session;
    }

    onHitTestResult = (result: WorldQueryHitTestResult) => {
        if (result === null) {
            // Hit test failed
            return;
        }

        const hitPosition = result.position;
        const hitNormal = result.normal;
        const hitClassification = result.classification;

        switch (hitClassification) {
            case SurfaceClassification.Ground:
                print("Hit ground!");
                break;
            case SurfaceClassification.None:
                print("Hit unknown surface!");
                break;
        }
    };

    onUpdate = () => {
        // Ray start and end depend on the specific application
        const rayStart = new vec3(0, 0, 0);
        const rayEnd = new vec3(0, 0, 1);

        this.hitTestSession.hitTest(rayStart, rayEnd, this.onHitTestResult);
    };

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