How to move a diagonal dimension with vector

[yahya_kilic]

Hi all,

I can move a horizontal dimension up and down. I can also move a vertical dimension to the left and right.

But I can't move a diagonal dimensions down with 300mm.

Can someone help me please?

Thank you in advance!

Black dimension is origin dim.

Red dimension is the vector

Blue dimension would be the new place of dim

[Mohamed_Arshad · Accepted solution]

Hi @yahya_kilic 

  To get the diagonal vector, you have to cross the Dimension line Vector with Z Basis. Then Multiply the distance for translation with diagonal vector. Kindly refer the below code for additional reference.

Reference Code:

            //01.Get Curve from Dimension
            Line line = dim.Curve.Clone() as Line;

            //02. Get Unit Vector
            XYZ unitVector = line.Direction.Normalize();

            //03. Diagonal Vector
            XYZ diagonalVec = unitVector.CrossProduct(XYZ.BasisZ);

            //04. Movement Vector 
            //Note: For Reverse Negatate the Value
            XYZ translationVec= diagonalVec.Multiply(300 / 304.8);

            using (Transaction translateDim = new Transaction(doc, "Move Dim"))
            {
                translateDim.Start();

                ElementTransformUtils.MoveElement(doc, dim.Id, translationVec);

                translateDim.Commit();
            }

For Additional Help regarding Mathematical Concept, Kindly check the below URL

https://www.mathsisfun.com/algebra/vectors-cross-product.html#:~:text=The%20Cross%20Product%20a%20%C... 

Hope this Helps 🙂

[yahya_kilic]

@Mohamed_Arshad thank you for your explanation and example!

It does exactly what I want 😁

I will dive into the mathematical concept 😊