Find example of overlay function?


New Member
I am researching options for an image comparison tool of outlines. For instance: A page with shapes; square, circle, triangle, octagon, hexagon, etc., that you drag and drop onto a single location and it will show those images stacked in order to visually compare them. Is there any example someone can point me to for viewing? Then, what would be the best programing language or premade tool for this? Thanks in advance