Generates the height difference map. For each map pixel it calculates the average height delta to four nearby pixels. Could be useful for separating horizontal and vertical surfaces (to fill them with grass and cliff respectively).
Masking only inclined areas with Slope
Properties:
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From: the starting angle (in degrees) of the masking effect.
From: 10, 20, 30, 50
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To: the ending angle (in degrees) of the masking effect. Usually it's 90 (vertical), but if you want to create an inversed effect (from 0 to X) or mask only the slope of some particular degrees (from X to Y) it might be needed to set this value.
To (while From is 20): 20, 30, 40, 90
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Smooth Range: the range (in degrees) of the transition between masked and unmasked effect.
Smooth Range: 0, 10, 20, 50