How to get my low-poly geometry

Questions
1

I design my geometry in 3d tool by sketchup.
So I am able to know all the vertices and indicesOfFaces in anticlockwise.

const vertices =[-55,30,4, -55,30,-4, -31,-2.7,-11, -18,-6,-15, 22,-6,-15, 62,6,-5, 62,6,5, 22,6,-15, -18,-6,15, -31,-2.7,11, -55,30,4]
const indicesOfFaces = [0,1,2, 0,2,9, 9,2,3, 9,3,8, 8,3,4, 8,4,7, 7,4,5, 7,5,6,
18,10,11, 18,11,17, 17,11,12, 17,12,16, 16,12,13, 16,13,15, 13,14,15,]
var hbody = new THREE.PolyhedronGeometry(vertices, indicesOfFaces, 1, 0);

I can’t get the geometry(the geometry is so strange), here radius is 1, but I don’t know how to set this, because not all the verticies on the sphere.
Is there any better solution to create my geometry?
I am the new one.
Thanks.

2

Live example with your code: https://jsfiddle.net/oxjnq2a8/

First of all, why are you using PolyhedronGeometry? If you design your geometry in sketchup, it’s probably better to export it to glTF and then import it via GLTFLoader.

3

Thanks so much.
Sorry to reply you so late. I am busy with another project.
My skectchup version is to old, I can not get the extension, and I don’t have the license of the lastest version .
Is exporting to OBJ file in skechup OK? I discover there is a OBJLoader.
If I don’t want to export to any file, is there any hint about it? Any example in this website? Or which function is easier to get it myself?

4

The live example https://jsfiddle.net/oxjnq2a8/ , it is strange , different from the geometry in sketchup.
But I will check myself

5

Loading OBJ is supported. However, you might want to consider to convert your OBJ files to glTF e.g. via

https://cesiumjs.org/convertModel/

or