How to reduct VertexBuffer index?

Troubleshooting
1

Now I have a mesh only contains point, no triangles. I’m working on point could LOD.

public void bakeLods(Mesh mesh, float... reductionValues) {
	int lodCount = reductionValues.length;
	VertexBuffer[] lods = new VertexBuffer[lodCount + 1];
	int numBakedLods = 1;
	lods[0] = mesh.getBuffer(VertexBuffer.Type.Index);
	// TODO
	mesh.setLodLevels(lods);
}
2

LOD as it’s implemented in jme won’t work if you have no triangle.
You will need several meshes and switch them with the distance.

3

And how to switch geometry’s mesh by setMesh?
I tried, but not work.

	@Override
	public void setLodLevel(int lodLevel) {
		if (lodMeshs.length > lodLevel && lodMeshs[lodLevel] != getMesh() && lodMeshs[lodLevel] != null) {
			System.out.println("PTSGeometry.setLodLevel()..." + lodLevel);
			setMesh(lodMeshs[lodLevel]);
			updateModelBound();
			updateGeometricState();
		}
	}
4

ha I answered in your other thread :wink:

5

I can switch mesh now. But multi have repeat point data. So the memory takes up a lot of.
I think I should use Vertex Index to reduct mesh.
Can you provide any help?

6

Indices are what indicates opengl how to draw faces between vertices… If you don’t have faces you don’t need Indices. And you can’t use them for lod.