[FIX] SceneModelEntity primitive count broken (NaN)

[Kurtil]

Use mesh.numTriangles instead of unknown mesh.numPrimitives to compute sceneModelEntity.numPrimitives. Maybe it works in some scenario if numPrimitives was added by parser or something else, but in my case it was broken loading LAZ (point cloud) models. Indeed, as sceneModelMesh is undefined, the computed numPrimitives is NaN .

[MichalDybizbanskiCreoox]

Hi @Kurtil,
Thank you for this PR.
Just wanted to clarify - you load the LAZ model using xeokit's LASLoaderPlugin, right?
We'll have to fix the core problem here, that is of mesh.numPrimitives being (wrongly) undefined.
Best,
Michał

[Kurtil]

Hi @MichalDybizbanskiCreoox , I managed to reproduce the problem using the LASLoaderPlugin but I also have the issue loading point-clouds from xkt.

[MichalDybizbanskiCreoox]

Thank you @Kurtil, we've created an internal ticket and will investigate the issue.