RGBA weight maps (A = layers 0-3, B = 4-7; B may be null). Center- aligned world mapping, both maps the same size.
Layer (0-7) painted along the footprint.
Optional
Peak painted weight in [0, 1] at full coverage. Default 1.
RGBA weight maps (A = layers 0-3, B = 4-7; B may be null). Center- aligned world mapping, both maps the same size.