ScriptoriumandClaude Opus 4.8
e2d94d71fe
Implement a linear-interpolation math node that maps an input value from an input range [in_min, in_max] onto an output range [out_min, out_max]. - node.py: SimpleLERP class (classic INPUT_TYPES/RETURN_TYPES pattern), float inputs for value and both ranges, plus a clamp toggle. Guards against a zero-width input range and supports inverted ranges. - __init__.py: export NODE_CLASS_MAPPINGS / NODE_DISPLAY_NAME_MAPPINGS for ComfyUI discovery. - README.md: usage, formula, and inputs/outputs tables. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
class SimpleLERP:
|
|
"""Linear interpolation: map a value from an input range to an output range."""
|
|
|
|
@classmethod
|
|
def INPUT_TYPES(cls):
|
|
flt = {"default": 0.0, "min": -1e9, "max": 1e9, "step": 0.01}
|
|
return {
|
|
"required": {
|
|
"value": ("FLOAT", flt),
|
|
"in_min": ("FLOAT", {**flt, "default": 0.0}),
|
|
"in_max": ("FLOAT", {**flt, "default": 1.0}),
|
|
"out_min": ("FLOAT", {**flt, "default": 0.0}),
|
|
"out_max": ("FLOAT", {**flt, "default": 1.0}),
|
|
"clamp": ("BOOLEAN", {"default": False}),
|
|
}
|
|
}
|
|
|
|
RETURN_TYPES = ("FLOAT",)
|
|
RETURN_NAMES = ("value",)
|
|
FUNCTION = "lerp"
|
|
CATEGORY = "math"
|
|
|
|
def lerp(self, value, in_min, in_max, out_min, out_max, clamp):
|
|
in_span = in_max - in_min
|
|
if in_span == 0:
|
|
# Degenerate input range: nothing to interpolate across.
|
|
result = out_min
|
|
else:
|
|
t = (value - in_min) / in_span
|
|
result = out_min + t * (out_max - out_min)
|
|
|
|
if clamp:
|
|
lo, hi = min(out_min, out_max), max(out_min, out_max)
|
|
result = max(lo, min(hi, result))
|
|
|
|
return (result,)
|
|
|
|
|
|
NODE_CLASS_MAPPINGS = {"SimpleLERP": SimpleLERP}
|
|
NODE_DISPLAY_NAME_MAPPINGS = {"SimpleLERP": "Simple LERP"}
|