What is geometry attributes count?

[Quan_Le]

Hi everyone!

I am working on glTF model and need to extract some information from geometry attributes.
The attributes properties are different between the meshes.
But each attribute has the count property and I figured out all the attributes (normal, position, tangent, uv, …) has the same count value of vertices (like this image below, all value are 1590).
Is that correct?

Thanks,

[felixmariotto]

Yes, count is the vertices number.

itemSize is the number of elements in the TypedArray for each vertex. Therefore, the array is count * itemSize long.

[Quan_Le]

Hi @felixmariotto,

Thanks for your answer.
So the vertices number (means count) should be the same for each attributes?
Such as normal.count = position.count = ... = 1590.
Right?

Thanks,

[felixmariotto]

@Quan_Le

So the vertices number (means count ) should be the same for each attributes?
Such as normal.count = position.count = ... = 1590.
Right?

yes exactly