Lack of function to create new Matrix4 from scale, translation and rotation.

[LP2X0X]

Hi @DomCR,

When trying to create a Transform object to help me transform the coordinates of a Vertex of a Polyline inside an INSERT entity, I noticed that it uses Matrix4 for the transformation.

However, the transformation information contained inside INSERT—scale, translation, and rotation—aren't originally in the Matrix4 format.

Do you think it would be necessary to add a new constructor to the Matrix4 class to create it from these three properties?

Thank you!

[DomCR]

Hi @LP2X0X,

To create that specific matrix you can use CSMath.Transform class, it has a constructor that allows you to create a matrix using those parameters:

public Transform(XYZ translation, XYZ scale, XYZ rotation)

And if you need the matrix you can use Transform.Matrix.

Hope this helps!

[LP2X0X]

Thank you for your response!

Please correct me if I’m wrong, but it looks like assigning values to the three variables results in updateMatrix being called three times. This is rather inefficient.

Was this the intended behavior?

[DomCR]

You are right! it would be easier to assign the values to the private fields and the update the matrix.

Thanks for the feedback!