Font Forum

 Is my question clear enough? Maybe it should be rephrased and clarified? Or do you just not fully understand this mechanism of transformation either?

 Thanks for the reply. However, I guessed that these are trigonometric functions. In this case, it's sin. But in order for the dimensions of the rectangle to be preserved, compensation for the "scale" values is necessary. I can't figure it out.  Can you tell us the principle of the formula...

It's not entirely clear how the "scale" and "transformation" values are formed. For example, if I need to rotate a rectangle for 30° without distorting its angles and dimensions. By what formula should these quantities be calculated?