Normalized Coordinates. Used to specify relative positions within an image, such as image offsets or crop parameters, normalized to the size of the image.
nx , ny
nx , ny
coordinate offset normalized to the size of an image (real, real)
Positive values move towards the bottom-right.
In many cases, the reference position is the center of the image. In this case, 0,0 corresponds to the center of the image, -0.5,-0.5 to the top-left corner, and 0.5,0.5 to the bottom-right corner.
Also used to specify image sizes or rectangle size relative to the size of layer 0. In this case, the values must be greater than 0. 0 may indicate that a specific default value should be used. 1,1 specifies a size equal to that of layer 0.