Improper model view for SceneView (3d-only) and inconsistent loaded model sizes for different models

[nayash]

First of thanks for your efforts in building this library. While the setup was easy, I am facing two issues:

1. The SceneView is not loading "glb" models properly (haven't tried other formats). I have tried with 2 freely available models (unable to attach here) but one of them is the famous Avocado [https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Models/master/2.0/Avocado/glTF-Binary/Avocado.glb], and both models are successfully loaded on https://modelviewer.dev/editor/ so nothing wrong with the glb files. Here is how the SceneView renders both:

Avocado


Above happens when I interact with it to zoom in/out

Code usage:
XML:

<io.github.sceneview.SceneView
        android:id="@+id/sceneView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

        val modelNode = ModelNode(
            position = Position(x = 0.0f, y = 0.0f, z = -4.0f),
            rotation = Rotation(y = 90.0f),
            scale = Scale(0.2f) // no change with 0.5f too
        )
        activity?.let {
            modelNode.loadModelAsync(it,
                glbFileLocation = "file:///android_asset/tv.glb", //"https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Models/master/2.0/Avocado/glTF-Binary/Avocado.glb",
                onError = { ex -> Log.e("loadError", "$ex") },
                onLoaded = { model -> Log.v("modelLoaded", "$model") })
        }
        binding.sceneView.addChild(
            modelNode
        )

TV

2. In the AR View Avocado appears too small (unable to zoom in/out on the object). On the other hand "tv.glb" appears too big to start with (tried both on same surface). How to control this behaviour? any code examples would help.
   

Device Details:
Samsung M51
One UI : 4.1
Android: 12

Please let me know if any other details are needed.

[nayash]

hey SceneView team, is it being looked at? any workarounds? I could use some acknowledgments.

[grassydragon]

Hi!
For the first problem please see this issue: #138
There can be some issues with the currently used version of Filament on your device.
For the second problem use the scaleToUnits parameter when loading a model:

sceneview-android/samples/ar-model-viewer/src/main/java/io/github/sceneview/sample/armodelviewer/MainActivity.kt

Line 148 in b7341cc

scaleToUnits = model.scaleUnits,

The scale gesture is currently a little bit tricky to execute. Make sure that both fingers are within the model.

[nayash]

Also, what gesture is used to rotate the model in AR View? (dragging with 2 fingers didn't work)

[grassydragon]

You should twist the fingers clockwise or counterclockwise.

[nayash]

The first issue is happening even on the sample app "sample-model-viewer" if I comment out the HDR environment loading:

lifecycleScope.launchWhenCreated {
            /*sceneView.environment = HDRLoader.loadEnvironment(
                context = requireContext(),
                lifecycle = lifecycle,
                hdrFileLocation = "environments/studio_small_09_2k.hdr",
                specularFilter = false
            )?.apply {
                indirectLight?.intensity = 50_000f
            }*/

            modelNode.loadModelGlb(
                context = requireContext(),
                lifecycle = lifecycle,
                glbFileLocation = "https://sceneview.github.io/assets/models/MaterialSuite.glb",
                scaleToUnits = 2.0f,
                centerOrigin = Position(x = 0.0f, y = 0.0f, z = 0.0f)
            )
            delay(1500)
            isLoading = false
            sceneView.cameraNode.smooth(
                lookAt(
                    eye = modelNode.worldPosition.let {
                        Position(x = it.x - 0.4f, y = it.y + 0.4f, z = it.z - 0.6f)
                    },
                    target = modelNode.worldPosition,
                    up = Direction(y = 1.0f)
                ),
                speed = 0.7f
            )
        }

Issue is happening for all the models if HDR env code is commented out. So it's not code issue. It also doesn't seem like Filament version issue because your SceneForm-android library is rendering properly.

[github-actions]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.