Position Part Relative To Two Other Parts On Certain Axises While Taking Rotation Into Account

[koyugaki (コユ゚)]

I have 3 parts: the blue part (A), red part (B), and the grey part in the background (C)

I want A (the blue part) to have a new position or cframe that has the X cframe of the red part, and the Y and Z of the grey part.

I’ve tried ToWorldSpace() and VectorToWorldSpace(), but ultimately I can’t get it to work.

Keep in mind I need them to align in the way I stated above while taking rotation into account.

[DataSigh]

Could you show an image of what the result would look like?

[koyugaki (コユ゚)]

It should look identical if not more accurate in the image above, the blue part should be aligned by the X axis of the red part, and Y,Z should be aligned with the grey part.

[koyugaki (コユ゚)]

With rotation of the grey part taken into account.

[DataSigh]

local greyPart = ...
local bluePart = ...
local redPart = ...

local rx, ry, rz = greyPart.CFrame:ToOrientation()

bluePart.CFrame = CFrame.new(redPart.CFrame.Position.X, greyPart.CFrame.Position.Y, greyPart.CFrame.Position.Z) * CFrame.fromOrientation(rx, ry, rz)

Maybe something like this?

[koyugaki (コユ゚)]

Nothing happened not even errors, but I’ve already tried using ToOrientation()

When I used it yesterday it did work, but the Z axis wasn’t fully aligned with the grey part.

[koyugaki (コユ゚)]

Yeah ToOrientation() probably isn’t going to satisfy my problem, I’ve got so close with just multiplying cframes, but they are never fully aligned…

[TenBlocke (Decablocks)]

You could just set the CFrame by reading off some position values and adding it to the rotation cframe of the grey part.

local BluePart, RedPart, GreyPart = --Blue, Red, and grey
local  RedPos, GreyPos = RedPart.Position, GreyPart.Position
local GoalRot = GreyPart.CFrame.Rotation --Get blank rotation data, no position data
local GoalPos = Vector3.new(RedPos.X, GreyPos.Y, GreyPos.Z) --create a position from your specifications
BluePart.CFrame = GoalRot + GoalPos --add the rotation to the position

[koyugaki (コユ゚)]

Doesn’t work… Although I’ll take your reply into consideration, honestly I was oblivious to there being a .Rotation of a CFrame.

[koyugaki (コユ゚)]

Solved my own problem.

local GreyPart, RedPart, BluePart = workspace.GreyPart, workspace.RedPart, workspace.BluePart;
local X = -(RedPart.CFrame:ToObjectSpace().X - RedPart.Size.X/2 - GreyPart.CFrame:ToObjectSpace().X);

BluePart.CFrame = GreyPart.CFrame:ToWorldSpace(CFrame.new(X,0,0));