html5 - How to convert css3scale and rotate into matrix writing when used at the same time?

Question

After reading some information about the usage of matrix, they only mentioned how to write the corresponding single attribute, but did not see how to write the composite one.
in the case of

transform:rotate(45deg) scale(2);

For the corresponding matrix, the values ​​of a and d will be used in rotate and scale, so how to convert them?

Answer 1

Introduce you to read an article on Zhang Dada’s blog and understand the Matrix in CSS3 transform

Answer 2

The composite one is Matrix(). Others are implemented using this, but the calculation is more troublesome - it is better to use a separate one