| DrawGridStep |
Draw a grid on the specified image, based on the x/y coordinates of the corners, and the number of segments within
the grid in both directions.
The 4 corner coordinates are defined as points, and come from Data.getListPoint(name), in the following order:
topLeft, topRight, bottomLeft, bottomRight
gridX is the number of grid segments between (topLeft and topRight) and (bottomLeft and bottomRight).
gridY is the number of grid segments between (topLeft and bottomLeft) and (topRight and bottomRight)
The colors and line thicknesses can be configured.
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