[FEATURE REQUEST] Diagonal (combined X&Y) translations for the Graph Editor

[hugogonzalezcastro]

Currently, when trying to adjust translations in the graph editor, you only have the possibility to control curves independently for X and Y. The problem of this approach is when doing diagonal translations, that require a combined translation on X and Y at the same time. When adjusting manually the curves for X and Y on the graph editor, it is very easy that the non-linear movement is different on X and Y, and the problem is that the combined translation gets curved.

Enabling the possibility to edit a combined X & Y translation in the graph editor, would fix this issue, as the curves would be adjusted for both parameters in the exact amount. The idea is that the diagonal translations keep going straight this way, instead of adjusting X and Y independently. This could be added in the GUI on this way:

Thank you!

[pgilfernandez]

Without solving exactly your feature request, a workaround for it that works already in Friction RC1 is using an expression that "copies" what the other coordinate does and then just edit the graph on one as the other one will be copied. There is an easy preset that will help you applying it:

You could even go further and make the function more complex to perform "crazier" things such as "double", "half", "clamp",... always editing your expression

[hugogonzalezcastro]

Thank you very much, that is a very cool workaround!
I will explore the other possibilities of expressions too!