# Can't find correctly vertices of my object
**URL:** https://discourse.threejs.org/t/cant-find-correctly-vertices-of-my-object/23947
**Category:** Questions
**Tags:** geometry, buffergeometry, vertices
**Created:** [March 1, 2021, 1:05pm UTC](https://discourse.threejs.org/t/cant-find-correctly-vertices-of-my-object/23947 "2021-03-01T13:05:33Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@RobertBeric42](https://discourse.threejs.org/u/RobertBeric42)
#### Post date: [March 1, 2021, 1:05pm UTC](https://discourse.threejs.org/t/cant-find-correctly-vertices-of-my-object/23947/1 "2021-03-01T13:05:33Z")
Hi everybody,
Il previously were used to find my vertices here :
→ myobject.geometry.vertices
In this example :
let terrainMaterial2 = new THREE.MeshPhysicalMaterial({roughness: 0.5, color: 0xe0d08d});
terrain2 = new THREE.Mesh(geometry2, terrainMaterial2);
console.log(“terrain2 geometry vertices”+JSON.stringify(terrain2.geometry.vertices))
scene.add(terrain2);
I get as a result an array of objects ( **that is what I need** ):
But i recently tried to move my project to react (without react three fiber this time, and downloaded the last version of Three).
What I get now is an ‘undefined’ value for the vertices array.
So I went to previous posts on the forum to dig a bit and found this issue :
> [@\[SOLVED\] Geometry.vertices is undefined](https://discourse.threejs.org/t/solved-geometry-vertices-is-undefined/3133):
>
> Hello, I’m trying to get the world position of the vertices in my model using geometry.vertices. but it returns undefined for me. I found this issue on SO [https://stackoverflow.com/questions/11495089/how-to-get-the-absolute-position-of-a-vertex-in-three-js](https://stackoverflow.com/questions/11495089/how-to-get-the-absolute-position-of-a-vertex-in-three-js) talking about it, but even using the method as described by WestLangley it will still return undefined. I load my obj using the THREE.OBJLoader, and it loads correctly. I try to get the vertice position using the following code: object.tr…
So i went into my geometry.positions.array and what I found was a mess :
Where I can find my positions but 1) not as array of objects with x: y: z: 2) all in the same array…
So I tried to use this way (and that’s what I’m here, I’m not sure at all it’s logical to do something like this in this situation)…
what gives me something like that :
Which definitely seems not to be what i’m searching for…
What’s do I miss here ?
Have a nice week !
Thanks a lot 🙂 !
---
### Author:  [@Mugen87](https://discourse.threejs.org/u/Mugen87)
#### Post date: [March 1, 2021, 2:52pm UTC](https://discourse.threejs.org/t/cant-find-correctly-vertices-of-my-object/23947/2 "2021-03-01T14:52:14Z")
Storing vertex data as array of objects (instances `Vector2`, `Vector3` or `Vector4`) is extremely inefficient and one reason why `THREE.Geometry` was deprecated and removed from the core.
With `THREE.BufferGeometry`, vertex data are organized as typed arrays which hold the data without objects in a consecutive pattern. Meaning [x,y,z, x,y,z, x,y,z, …].
Sometime it is necessary to represents these data as objects for further computation and processing. In this case, use the following pattern:
```javascript
const positionAttribute = mesh.geometry.getAttribute( 'position' );
const vertex = new THREE.Vector3();
for ( let vertexIndex = 0; vertexIndex < positionAttribute.count; vertexIndex ++ ) {
vertex.fromBufferAttribute( positionAttribute, vertexIndex );
// do something with vertex
}
```
Notice that a single instance of `Vector3` is reused in order to process vertices for performance reasons.
---
### Author:  [@RobertBeric42](https://discourse.threejs.org/u/RobertBeric42)
#### Post date: [March 2, 2021, 12:23pm UTC](https://discourse.threejs.org/t/cant-find-correctly-vertices-of-my-object/23947/3 "2021-03-02T12:23:33Z")
Thanks a lot !
This tut ([Terrain Generation with Perlin Noise · Stephan Baker](http://www.stephanbaker.com/post/perlinterrain/)) + I added a smoothing effect
I tried it like this 🙂 (unelegant I think but does what I want)
→ is this the right (or at least one of the rights) way :
```
function randomIntervalNumber (interval, quantity) {
let array = []
for (let i = 0; i <= quantity; i ++) {
let number = interval*(0.5*i) / quantity
array.push(number)
}
return array.reverse()
}
//console.log(randomIntervalNumber(2, 107))
function adjustVertices(terrain, offset, panela, panelb, modificator) {
// WITH PERLIN
var vertices = terrain.geometry.attributes.position.array;
let scaler = randomIntervalNumber(1, Number(vertices.length))
for (var i = 0; i <= vertices.length; i += 3) {
vertices[i+2] = (peak*scaler[i]) * perlin.noise(
((terrain.position.x)*offset + vertices[i])/smoothing,
((terrain.position.z) + vertices[i+1])/smoothing
);
}
terrain.geometry.attributes.position.needsUpdate = true;
terrain.geometry.computeVertexNormals();
}
```
Is this less consuming than the “geometry.vertices” way (because it was the main consumer of all my scene) ?
Thanks a lot those vertex/vertices things are quite uneasy at the beginning.
---
### Author:  [@JYuan94](https://discourse.threejs.org/u/JYuan94)
#### Post date: [May 6, 2023, 3:09am UTC](https://discourse.threejs.org/t/cant-find-correctly-vertices-of-my-object/23947/4 "2023-05-06T03:09:07Z")
Hello, friend! Can you help me see how I can solve this problem:
How do I get a vertex somewhere on the three.geometry surface?
> [@How do I get the vertex position somewhere on the PlaneGeometry surface？](https://discourse.threejs.org/t/how-do-i-get-the-vertex-position-somewhere-on-the-planegeometry-surface/51218):
>
> I want the little red spheres, as shown here, to be on the geographic plate, not nested inside I found this method on the Internet, but I was confused that I was using： The index above it has 393,216 points How do I get x and y to find the specified index to get the vertex position? This is my code, I hope you help me to look at, thank you!