CODEWITHSUNDEEP
javaandroid-studioaugmented-realityarcoresceneform
MUCHUAN SU
MUCHUAN SU

Reputation: 59

.obj/.gltf 3D model won't show in ARCore

I followed a tutorial online to create an AR app that could show my 3D models in AR.

I put my .obj and .gltf 3d model files in my assets folder,

when the I tap on a plane, the method placeObject() should run and put my model (selectObject) on the place.

but when I test it on my phone,after the plane was detected and I tapped the screen, nothing happened, I checked my logcat and it shows the error when I tapped:

2021-11-04 01:55:46.629 11172-12363/com.example.arcoretest E/ModelRenderable: Unable to load Renderable registryId='testscene.obj'
    java.util.concurrent.CompletionException: java.lang.AssertionError: No RCB file at uri: testscene.obj
        at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:278)
        at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:284)
        at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1629)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:920)
     Caused by: java.lang.AssertionError: No RCB file at uri: testscene.obj
        at com.google.ar.sceneform.rendering.LoadRenderableFromSfbTask.byteBufferToSfb(LoadRenderableFromSfbTask.java:191)
        at com.google.ar.sceneform.rendering.LoadRenderableFromSfbTask.lambda$downloadAndProcessRenderable$0$com-google-ar-sceneform-rendering-LoadRenderableFromSfbTask(LoadRenderableFromSfbTask.java:121)

I'm not sure where the problem is, is it my uri is wrong or I should use other 3d model format? (I tried .obj/.fbx/.gltf but none of them worked) (I can't use .sfb or .sfa ,I can no longer use sceneform plugin to convert files into sfa/sfb because it was deprecated)

here is my grade dependencies:

{

implementation 'com.google.ar.sceneform.ux:sceneform-ux:1.15.0'

implementation 'com.google.ar:core:1.15.0'

implementation 'com.google.ar.sceneform:assets:1.15.0' ... }

My mainActivity.java:

package com.example.arcoretest;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;

import com.google.ar.core.Anchor;
import com.google.ar.core.HitResult;
import com.google.ar.core.Plane;
import com.google.ar.sceneform.AnchorNode;
import com.google.ar.sceneform.rendering.ModelRenderable;
import com.google.ar.sceneform.rendering.Renderable;
import com.google.ar.sceneform.ux.ArFragment;
import com.google.ar.sceneform.ux.TransformableNode;

public class MainActivity extends AppCompatActivity {
    private ArFragment fragment;
    private Uri selectObject;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        selectObject = Uri.parse("testscene.obj");

        fragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.sceneFormFragment);

        //when tapped on a plane, code below will run
        fragment.setOnTapArPlaneListener(
                (HitResult hitResult, Plane plane, MotionEvent motionEvent)->{
                    Anchor anchor = hitResult.createAnchor();
                    placeObject(fragment,anchor,selectObject);
                }
        );
    }

    //this method put 3d model in scene
    private void placeObject(ArFragment fragment, Anchor anchor,Uri model){
        ModelRenderable.builder()
                .setSource(fragment.getContext(),model)
                .build()
                .thenAccept( renderable -> addNodeToScene(fragment,anchor,renderable))
                .exceptionally((throwable -> {
                    AlertDialog.Builder builder = new AlertDialog.Builder(this);
                    builder.setMessage(throwable.getMessage())
                            .setTitle("Error!");
                    AlertDialog dialog = builder.create();
                    dialog.show();
                    return null;
        }));
    }
    private void addNodeToScene(ArFragment fragment, Anchor anchor, Renderable renderable){
        AnchorNode anchorNode = new AnchorNode(anchor);
        TransformableNode node = new TransformableNode(fragment.getTransformationSystem());
        node.setRenderable(renderable);
        node.setParent(anchorNode);
        fragment.getArSceneView().getScene().addChild(anchorNode);
        node.select();
    }

}

and I put my 3d model files in assets folder like this: enter image description here

Upvotes: 0

Views: 302

Answers (1)

Sceada
Sceada

Reputation: 533

I would recommend to update to the latest version of SceneForm. This is a community maintained version, with the latest dependencies of ArCore, Filament and Android. For your usecase the 3d-model-viewer sample might be interesting.

Upvotes: 1

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