# Making parts within a bigger 'line' part

Hey Developers! I’m a scripter, but I am not at all good with CFrames! Basically I have this part which acts like a line in the wall, but I need to a ‘start’ and an ‘end’ part.

In green, is this line. You see I want to place a part in each of yellow sections. But this issue is that the ‘line’ part can be in different orientations.

Another issue that I would like is to make the yellow part the thickness of the line as indicated with the red arrows below:

Again, I’m having the same issue of that, it can be in different orientations!!

I’ve been stuck for hours and am willing to try anything! Any and all help is much appreciated.

1 Like

Have you tried using `CFrame:VectorToWorldSpace`? I am making a placement system for my game, and it has rotation on all 3 axes, which made it difficult for me to calculate the offsets for a part when it’s in a different orientation.

Here is an example:

``````local worldSize = part.CFrame:VectorToWorldSpace(part.Size)
worldSize = Vector3.new(
math.abs(worldSize.X),
math.abs(worldSize.Y),
math.abs(worldSize.Z)
)
``````

What this will do is calculate the size of that part (in the world, so rotations are applied), and store it in a `Vector3`.

If you still don’t understand, here is a better explaination:

Below is just a regular part. It has a size of `4, 1, 2`, and does not have any orientation applied to it:

Its “world size” is the same: `4, 1, 2`.

Now, suppose I rotate the part by 90 degrees on the z-axis (as an example):

The size is still the same (`4, 1, 2`), but it has an orientation of `0, 0, 90`. So when we get the “world size” of the part (after applying abs to all 3 numbers in the `Vector3`), which is `1, 4, 2`.

As you can see, this can be extremely useful as it allows you to perform calculations without having to worry about the part’s orientation. Hope this helps!