Add BatchedMesh LOD and BVH example page

[agargaro]

Description

Hi! I've created an example that demonstrates how to manage LODs for BatchedMesh geometries, along with BVH acceleration for raycasting and frustum culling.

It's built using my @three.ez/batched-mesh-extensions library together with three-mesh-bvh by @gkjohnson.

@mrdoob Unlike the version published in X, here I also added raycasting and GUI.

You can check out the live demo here: https://agargaro.github.io/three.js/examples/webgl_batch_lod_bvh.html

Is that okay or should I create a different type of example?

[cmhhelgeson]

Description

Hi! I've created an example that demonstrates how to manage LODs for BatchedMesh geometries, along with BVH acceleration for raycasting and frustum culling.

It's built using my @three.ez/batched-mesh-extensions library together with three-mesh-bvh by @gkjohnson.

@mrdoob Unlike the version published in X, here I also added raycasting and GUI.

You can check out the live demo here: https://agargaro.github.io/three.js/examples/webgl_batch_lod_bvh.html

Is that okay or should I create a different type of example?

This is really cool.

I think it would be neat if there was some way to see what the LODS closer to the horizon look like. Maybe a boolean settings like 'staticLOD' or 'freezeDistanceCalculation' that maintains the last stored distance from each mesh to the camera, such that when you move towards the back of the scene you can more clearly see how the LODs detail changes based on distance. Maybe my eyes are just bad and I just can't see the LODs for the farthest objects : )

[agargaro]

I think it would be neat if there was some way to see what the LODS closer to the horizon look like. Maybe a boolean settings like 'staticLOD' or 'freezeDistanceCalculation' that maintains the last stored distance from each mesh to the camera, such that when you move towards the back of the scene you can more clearly see how the LODs detail changes based on distance. Maybe my eyes are just bad and I just can't see the LODs for the farthest objects : )

I could override the onBeforeRender method with an empty function, to avoid recalculation of the multidraw data. However, this would also disable frustum culling, resulting frozen.

[agargaro]

I've added the freeze flag with latest commit.