This work is a failed siggraph asia 2019 submit paper, when I submit it I'm just a undergraduate doing my graduation project, I made this without a proper academic mentoring, but why not have a try, right?
Now I upload the paper draft, please note that the writtings is not very good, but can still explain the idea of this work.
This repository is the origin implementation of Discrete k-d Tree Hierarchy for Isosurface Extraction. The picture above shows three reconstructed results of stanford dragon using uniform grid, octree and k-d tree under an error threshold of 1e0.
The triangle counts for those results are shown below.
| uniform grid | octree | k-d tree |
|---|---|---|
| 309,962 | 35,836 | 22,608 |
It's a classical test that shows the isosurface extracted from k-d tree obtains almost half the triangles of the one extracted from octree.
Octree-based method is based on works of Schaefer et al. (Manifold dual contouring).
- glm 0.9.9
- glew 2.1.0
- glfw 3.2.1
mkdir build
cd build
cmake .. && make
bin/opengl_viewer [options]After a few seconds, you should be able to see a CSG defined geometry shaded with color and wireframe. Try drag and scroll mouse to view the extraction result.
Triangle count: 352
The argument "—strucrture" allows you to compare the extraction result of octree and k-d tree.
bin/opengl_viewer -s oct
Triangle count: 2384
For more CSG result, edit src/examples/main.cpp and recompile the project
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