This question has two parts.
–PART 1–
Okay, so I want to transfer my screen drawing (that is, me holding down the mouse and drawing lines in-game on the screen) onto a UI.
The issue is, I have absolutely no idea how to do this. I would search it up, but I’m not even sure what to search up; what I have tried to search so far has not given me helpful results.
For example, say I drew this in-game:
And I want to transfer it to a small UI (since it is very likely the on-screen drawing will be too big), so it looks something like this:
where the black box is a makeshift UI.
–PART 2–
The other part of this question is how I can check for how accurate it is. Take this new, modified image:
How could I check for overlap such that if any part of the drawing (white scribble) is outside the green boxes, it is considered “invalid”?
(Note: The drawings/scribbles are NOT fixed, and can be completely different depending on what is drawn. Hence, why I cannot just use a static image for this entire thing. In addition, the green boxes are literally several frames in this case for the sole purpose of detection. These are fixed, however.)