Potree and Itowns

[gchoqueux]

We fork Potree to add these features in itowns viewer.

We have developed potree :

• WebGl 2.0 partial support
  • instance webgl 2.0 renderer
  • support shader
  • OES_vertex_array_object is handling by potree, not by THREE
  • PointCloudMaterial doesn't use THREE shader building.
• Log depth buffer support
  • Shader and material support
  • wrong rendering with HQ (hight quality)
  • wrong depth paraboloid point shape
• Up THREE to 133.1
• Replace libs packages by npm packages
  • THREE
  • Spectrum
  • jquery-gui
  • Tween
  • d3
  • proj4
  • i18next
  • jquery-3.1.1

[alexLuky]

That's great! But how can I color cloud by elevation range like Potree does?

Now if I set
pointcloud.material = new Potree.PointCloudMaterial();

I get the error: material.onBeforeRender is not a function.

[gchoqueux]

the versions of THREE must be identical everywhere

[alexLuky]

the versions of THREE must be identical everywhere

Now I'm linking to this Potree version in itowns example html's. If I use the itowns.PointsMaterial
pointcloud.material = new itowns.PointsMaterial({overlayColor: new THREE.Vector4(1, 1, 1, 1)})
I can see my cloud in white color on globe.

But if I create the material by Potree.PointCloudMaterial

pointcloud.material = new Potree.PointCloudMaterial()
pointcloud.material.activeAttributeName = 'elevation'
pointcloud.material.pointSizeType = Potree.PointSizeType.ADAPTIVE
pointcloud.material.minSize = 3
pointcloud.material.size = 1.1
pointcloud.material.elevationRange= [0, 200]
pointcloud.material.gradient = Potree.Gradients.TURBO
pointcloud.material.weightRGB = 1.0
pointcloud.material.weightElevation = 1.0

than there is no cloud on the globe and there are no errors in console and I can see the pointcloud instance on the scene in console but it's not visible. These code is working in my standard potree app with this pointcloud but there are problems with itowns relization. I've tried to init just default Potree.PointCloudMaterial configs and rgb mode but the result is the same.

Perhaps the issue is because of this option:

PointCloudMaterial doesn't use THREE shader building.

So should I write my own material for colorize my pointcloud by height gradient or maybe there is another solution?
Maybe you can make an example for this case?

[gchoqueux]

i add a example #5