Sample Mapper
Used to scale, offsets and/or invert decimal values.
They are mostly used to scale input sampler outputs
Video
Input/Output
Description
Data Type
>sample
The input value
decimal
>sample_min
The lower and upper borders to specify the sample range
decimal
>sample_max
decimal
>mapped_min
The lower and upper borders to specify the mapped range
decimal
>mapped_max
decimal
>invert
Flips <mapped with <inverted
boolean
<mapped
The scaled output value
decimal
<inverted
The inverted scaled output value
decimal
Formulas [ ]
Sample mapper applies linear interpolation between two points: (sample_min; mapped_min) and (sample_max; mapped_max).
Y
=
Y
1
+
(
Y
2
−
Y
1
)
∗
(
X
−
X
1
)
(
X
2
−
X
1
)
Y
i
n
v
=
Y
2
+
(
Y
1
−
Y
2
)
∗
(
X
−
X
1
)
(
X
2
−
X
1
)
{\displaystyle \begin{alignat}{2}
{\color{White}Y = }&\ {\color{White}Y_1 + (Y_2 - Y_1) * \frac{(X - X_1)}{(X_2 - X_1)}} {\color{YellowOrange}} \\
{\color{White}Y_{inv} = }&\ {\color{White}Y_2 + (Y_1 - Y_2) * \frac{(X - X_1)}{(X_2 - X_1)}} \\
\end{alignat}}
X
=
sample
Y
=
mapped
Y
i
n
v
=
inverted
X
1
=
sample min
X
2
=
sample max
Y
1
=
mapped min
Y
2
=
mapped max
{\displaystyle \begin{alignat}{7}
{\color{White}X = }& {\color{White}\text{ sample}} {\color{YellowOrange}} \\
{\color{White}Y = }& {\color{White}\text{ mapped}} \\
{\color{White}Y_{inv} = }& {\color{White}\text{ inverted}} \\
{\color{White}X_1 = }& {\color{White}\text{ sample min}} \\
{\color{White}X_2 = }& {\color{White}\text{ sample max}} \\
{\color{White}Y_1 = }& {\color{White}\text{ mapped min}} \\
{\color{White}Y_2 = }& {\color{White}\text{ mapped max}} \\
\end{alignat}}
