DrawGridStep is used to draw a grid on the specified image, based on the x or y coordinates of the corners, and the number of segments within the grid in both directions. The four corner coordinates are defined as points, and come from list of point targeted data, in the following order: top left, top right, bottom left, bottom right.null, it will try to find any image in the incoming data instance.true, the lists are in pixels coordinates, not from 0 to 1.#788E87, an RGB value like - rgb(128,0,255) or it can be from a set of predefined HTML color names: white, silver, gray, black, red, maroon, yellow, olive, lime, green, aqua, teal, blue, navy, fuchsia, purple.#788E87, an RGB value like - rgb(128,0,255) or it can be from a set of predefined HTML color names:white, silver, gray, black, red, maroon, yellow, olive, lime, green, aqua, teal, blue, navy, fuchsia, purple.1.null then the same value as the borderThickness is used.