Make a first experiment with 3d tiles #569
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@javagl I had a good time working with JglTF, even if this is a very raw and basic example. I see that you have been actively contributing to 3d-tiles as well. Thank you so much for all of your hard work and your contributions to the 3d-tiles community. I hope we'll be able to improve this example in the future to make a better use of all the amazing features of these specifications. |
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Thanks for the heads-up. I'll definitely have a closer look at the implementation (and the broader context of baremaps) here. |
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baremaps-server/src/main/java/org/apache/baremaps/server/TdTilesResources.java
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| String buildingLevels = resultSet.getString(4); | ||
| float finalHeight = 10; | ||
| if (buildingHeight != null) { | ||
| finalHeight = Float.parseFloat(buildingHeight.replaceAll("[^0-9]", "")); |
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| if (buildingHeight != null) { | ||
| finalHeight = Float.parseFloat(buildingHeight.replaceAll("[^0-9]", "")); | ||
| } else if (height != null) { | ||
| finalHeight = Float.parseFloat(height.replaceAll("[^0-9]", "")); |
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| } else if (height != null) { | ||
| finalHeight = Float.parseFloat(height.replaceAll("[^0-9]", "")); | ||
| } else if (buildingLevels != null) { | ||
| finalHeight = Float.parseFloat(buildingLevels.replaceAll("[^0-9]", "")) * 3; |
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baremaps-server/src/main/java/org/apache/baremaps/server/TdTilesResources.java
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baremaps-server/src/main/java/org/apache/baremaps/server/TdTilesResources.java
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| @Get("regex:^/subtrees/(?<level>[0-9]+).(?<x>[0-9]+).(?<y>[0-9]+).json") | ||
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As described in #568. We should start to experiment generating 3d tiles from OSM data to apply extrusion on buildings and render them in Cesium.
I have made a first experiment with the most simple setup:
tileset.jsonwhich defines an implicit tiling in a quad tree.On the JAX-RS server, I serve a simple
index.htmlfile that uses Cesium to render the 3d tiles.Here is a preview:
Screencast.from.05-01-23.14_50_02.mp4
Any input or improvement is welcome. The goal of this work is to make experimentations to discover the 3d tiles and GLTF specifications. I have learnt a lot of interesting things by working on this example and there is so much more that could be done.
One thing that would be interesting to explore is to use the
ADDrefinement type instead of theREPLACErefinement type. See here. This way we could additively load new buildings instead of overwriting them at each tile level.Other possibilities include:
There are endless possibilities and optimisations. If anyone is interested, I would be happy to discuss it.