clarification on lighting

[linlumio]

Hi! I'm programming an application to display indicative arrows. The three-dimensional GLB models are:

https://drive.google.com/file/d/1M897BD1hupHYqVYC4FUOduUtowwg_-af/view?usp=sharing, https://drive.google.com/file/d/1UP2XRAvzrCUYRizU7_AaoGmD1h4cxiPc/view?usp=sharing

first doubt: Until now I have been using sceneview 0.9.4, I don't need the lighting management, because the arrows should be an indication always visible in any situation. But every time I placed the 3D object I saw it very dark (white arrow becomes black).
I tried modifying:

arSceneView.mainLight
arSceneView.scene.indirectLight
arSceneView.environment.indirectLight
arSceneView.addLight()
arModelNode.setCastShadows(true / false)
arModelNode.setReceiveShadows(true / false)

and setting arSession.lightEstimationMode = Config.LightEstimationMode.DISABLED

Eventually setting arSession.lightEstimationMode = Config.LightEstimationMode.ENVIRONMENTAL_HDR
the colours looked good, but the system was still handling the lighting, which I did not want. Is there any way to retain the original colours of a 3D object without them being affected by the lighting?

Second doubt: Updating to sceneview 0.10.2 brought back the problems described above: 3D objects are very dark and this time changing 'LightEstimationMode' seems to have no effect.
If I place the objects close together, I can add a light:

arSceneView.addLight(
                LightManager.Builder(LightManager.Type.POINT)
                    .apply {
                        val (r,g,b) = Colors.cct(4_000f)
                        color(r,g,b)
                        intensity(2_000_000f)
                        castShadows(true)
                    }.build()
            )

but as I place an object some distance away it is shown dark.
Any suggestion?

p.s. Thank you very much for your incredible work with this library!

[sameerjj]

I have pretty much the same issue! I also added an IndirectLight

sceneView.indirectLight = IndirectLight.Builder()
    .intensity(100000f)
    .build(sceneView.engine)

but no satisfying results.

[tomriddle25]

Hi folks, I am in a similar situation, did you find an answer to this ?

[ThomasGorisse]

@sameerjj Could you create a PR with your indirect by default?

[sameerjj]

Hi @ThomasGorisse wasn't 100% sure what you were requesting but I submitted my attempt:
#460