I'm looking to build a multipoint mouse control, as in left click and drag on the left side to set a range start, left click and drag on the right side to set a range end and left click and drag in the middle to shift the whole range forward or backward.
I've never made one of these before and I was hoping you guys would have some suggestions on how to approach it.
I would imagine using px and py values to measure distance but I'm at a bit of a loss as to how I'm going to store these coordinates in core and check against them in the future for snapshot usage.
Has anyone here ever made one before?
Thanks.