USE FULL SCREEN. Move the mouse pointer slowly around the stage. This project investigates the range of area on the stage that a 1x1 pixel costume will detect the mouse-pointer. It is a continuation of the project "over-reaching" Bitmap costumes. https://scratch.mit.edu/projects/1047143821 It seems that 1x1 pixel costume (bitmap or vector) will detect the mouse pointer over a range of up to four times it's size (the location of the costume <x,y> and three locations <x,y-1>, <x+1,y> and <x+1,y-1> )
The costumes used for detection are 1x1 pixels that would be difficult to see so I display an enlarged simulation. One at a time, I place the costumes in a 3x3 grid around the mouse pointer and see from which costume position the mouse-pointer position is detected using the <touching mouse-pointer> reporter.