Why my 3d tile is broken like this??

CesiumJS
1

1. A concise explanation of the problem you’re experiencing.

Tile is broken.

When zooming in or out, broken tiles keep changing.

Some broken tiles filled with normal tiles, but other normal tiles turn into broken tiles.

Is this problem relative with tile size?? (e.g 256, 512, 1024 …8192)

Thanks

2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.

This is code that load 3D tiles

    var tileset4 = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({

        url: 'http://localhost:8080/Apps/SampleData/models/mangmi/tileset.json',

        maximumScreenSpaceError: 1

    }));

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

city management

4. The Cesium version you’re using, your operating system and browser.

ver1.47, win10 64bit, firefox and chrome

tile broken.PNG.jpg
tile broken.PNG.jpg1549×796 700 KB

2

maximumScreenSpaceError shouldn’t need to be set as low as 1, (see the explanation on how screen space error relates to your tileset in the 3D Tiles Spec). Can you try omitting that property, or setting it to a higher value like 16?

3

Hi Gabby Getz.

Thank you for your advise

I tried it just now.

but there are no difference.

and the problem is despite of enough zoom, child tiles are not loaded.

So i found that low value of maximumscreenspaceerror is resolve this problem.

Is this problem is come from tileset.json geometricerror value??(about not loaded child tiles)

result.jpg
result.jpg1583×719 139 KB

see picture

2018년 8월 11일 토요일 오전 5시 52분 54초 UTC+9, Gabby Getz 님의 말:

4

It could have to do with the bounding box of the tiles as well. The size of that is used along with the geometric error to claculate the Screen Space Error introduced by the children tiles.

I suggest reading through the specification and asking if you have any questions based on that.