I am using the new Input System to abstract away the specific details behind the devices used, and I really love that aspect of the new system. I am having a big issue trying to lump the mouse wheel and pinch to zoom into a single “zoom” action.
I do know a solution, but I don’t like it. I can make an action specifically for touch devices alone that does a zoom specifically with actual knowledge of two touches… but that breaks my design because it makes assumptions about technologies used to cause actions.
So, I find myself trying to somehow compose the Vector2 for the “zoom” action by making a composite control made up of touches. This doesn’t seem to work since the composite parts are expected to be up, down, left, and right. I don’t see a way I can make this happen and wanted to reach out and see if anyone had ideas for me to try out.
#if UNITY_EDITOR
[InitializeOnLoad]
#endif
public class test : InputProcessor<Vector2>
{
#if UNITY_EDITOR
static test()
{
Initialize();
}
#endif
[RuntimeInitializeOnLoadMethod]
static void Initialize()
{
InputSystem.RegisterProcessor<test>();
}
public override Vector2 Process(Vector2 value, InputControl control)
{
//$ snag both positions and then produce your vector2 here
var potentialControl0 = control.device.TryGetChildControl<Vector2Control>("/touch0/position");
var potentialControl1 = control.device.TryGetChildControl<Vector2Control>("/touch1/position");
return value;
}
}
Have you came up with something? Can you share processor final code?
I have a trouble with checking InputControl state. It seems like for /touch0/position there is no way to get propert IsActuated() (probably because it doesn’t support magnitude evaluation). So how you handle case, when input system detect touch0 without touch1?
UPD0: Figured out that for such purposes modifiers suits better
