a Documentation issue maybe?

Mowgly

" float range_lerp ( float value, float istart, float istop, float ostart, float ostop )

Maps a value from range [istart, istop] to [ostart, ostop].

range_lerp(75, 0, 100, -1, 1) # Returns 0.5"

this is given in the gdscript reference but shouldnt the range-lerp return 0.75? thanks

TwistedTwigleg

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DaveTheCoder

range_lerp(75, 0, 100, -1, 1)

I just tested that code, and it returns 0.5, which is correct.

(-1) + ((75 / (100 - 0)) * (1 - (-1))) = 0.5

https://docs.godotengine.org/en/stable/classes/class_@gdscript.html?highlight=range_lerp#class-gdscript-method-range-lerp

Megalomaniak

The value of 75 in a range of 0 to 100 is equivalent to 0.5 in a -1.0 to 1.0 range. 50 in 0 to 100 range would map to 0 in -1.0 to 1.0 range.

If you want the function to map 75 from 0 to 100 range to a value of 0.75 then you would type:


range_lerp(75, 0, 100, 0, 1)

and not:


range_lerp(75, 0, 100, -1, 1)