Change the detection area by changing the rectangle that originally constituted the detection area with two points into a parallelogram area formed by four points. (when changing the points, make sure that the four points A, B, C, and D are ordered clockwise or counterclockwise)
Change the detection area by changing the rectangle that originally constituted the detection area with two points into a parallelogram area formed by four points. (when changing the points, make sure that the four points A, B, C, and D are ordered clockwise or counterclockwise)