Arc Sine node

Access: Nodes > Math > Arc Sine

Returns the angle of the value, whose sine is the input. The output is in the range of −π/2 to+π/2. This node is helpful if you need to reconstruct a height profile from an existing Normal map's slope channels, as it will translate the normalized surface slope value back into an angular incline angle.

Input (RGB)	Output (RGB
0.0, 0.0, 0.0	0.0, 0.0, 0.0
1.0, 1.0, 1.0	1.5708, 1.5708, 1.5708
-1.0, -1.0, -1.0	-1.5708, -1.5708, -1.5708

Arc Sine node inputs

Input

Value (clamped internally to −1 … 1)

Arc Sine node outputs

Output

The resulting angle in radians, ranging from −π/2 to+π/2.