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fix minor issue in smooth step function's documentation

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(cherry picked from commit 892060fa47)
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Angad Kambli 2021-02-13 02:12:58 +05:30 committed by Rémi Verschelde
parent 38c168b53b
commit 327586f582
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modules/gdscript/doc_classes/@GDScript.xml
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@ -1093,7 +1093,7 @@
<description> <description>
Returns the result of smoothly interpolating the value of [code]s[/code] between [code]0[/code] and [code]1[/code], based on the where [code]s[/code] lies with respect to the edges [code]from[/code] and [code]to[/code]. Returns the result of smoothly interpolating the value of [code]s[/code] between [code]0[/code] and [code]1[/code], based on the where [code]s[/code] lies with respect to the edges [code]from[/code] and [code]to[/code].
The return value is [code]0[/code] if [code]s &lt;= from[/code], and [code]1[/code] if [code]s &gt;= to[/code]. If [code]s[/code] lies between [code]from[/code] and [code]to[/code], the returned value follows an S-shaped curve that maps [code]s[/code] between [code]0[/code] and [code]1[/code]. The return value is [code]0[/code] if [code]s &lt;= from[/code], and [code]1[/code] if [code]s &gt;= to[/code]. If [code]s[/code] lies between [code]from[/code] and [code]to[/code], the returned value follows an S-shaped curve that maps [code]s[/code] between [code]0[/code] and [code]1[/code].
This S-shaped curve is the cubic Hermite interpolator, given by [code]f(s) = 3*s^2 - 2*s^3[/code]. This S-shaped curve is the cubic Hermite interpolator, given by [code]f(y) = 3*y^2 - 2*y^3[/code] where [code]y = (x-from) / (to-from)[/code].
[codeblock] [codeblock]
smoothstep(0, 2, -5.0) # Returns 0.0 smoothstep(0, 2, -5.0) # Returns 0.0
smoothstep(0, 2, 0.5) # Returns 0.15625 smoothstep(0, 2, 0.5) # Returns 0.15625