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In computer science, clamping, or clipping is the process of limiting a value to a range between a minimum and a maximum value. Unlike wrapping, clamping merely moves the point to the nearest available value.
| Y = clamp(X, 1, 3) | |
|---|---|
| X | Y |
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 3 |
In Python, clamping can be defined as follows:
def clamp(x, minimum, maximum):
if x < minimum:
return minimum
if x > maximum:
return maximum
return x
This is equivalent to max(minimum, min(x, maximum)) for languages that support the functions min and max.