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Improve range_lerp() and related methods documentation

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(cherry picked from commit bd19c9a95c)
This commit is contained in:
Hugo Locurcio
2022-08-05 09:54:46 +02:00
committed by Rémi Verschelde
parent a6b75da78c
commit 2ed3818277
3 changed files with 9 additions and 6 deletions
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11
modules/gdscript/doc_classes/@GDScript.xml
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@@ -425,7 +425,7 @@
<argument index="1" name="to" type="float" />
<argument index="2" name="weight" type="float" />
<description>
Returns an interpolation or extrapolation factor considering the range specified in [code]from[/code] and [code]to[/code], and the interpolated value specified in [code]weight[/code]. The returned value will be between [code]0.0[/code] and [code]1.0[/code] if [code]weight[/code] is between [code]from[/code] and [code]to[/code] (inclusive). If [code]weight[/code] is located outside this range, then an extrapolation factor will be returned (return value lower than [code]0.0[/code] or greater than [code]1.0[/code]).
Returns an interpolation or extrapolation factor considering the range specified in [code]from[/code] and [code]to[/code], and the interpolated value specified in [code]weight[/code]. The returned value will be between [code]0.0[/code] and [code]1.0[/code] if [code]weight[/code] is between [code]from[/code] and [code]to[/code] (inclusive). If [code]weight[/code] is located outside this range, then an extrapolation factor will be returned (return value lower than [code]0.0[/code] or greater than [code]1.0[/code]). Use [method clamp] on the result of [method inverse_lerp] if this is not desired.
[codeblock]
# The interpolation ratio in the `lerp()` call below is 0.75.
var middle = lerp(20, 30, 0.75)
@@ -434,7 +434,7 @@
var ratio = inverse_lerp(20, 30, 27.5)
# `ratio` is now 0.75.
[/codeblock]
See also [method lerp] which performs the reverse of this operation.
See also [method lerp] which performs the reverse of this operation, and [method range_lerp] to map a continuous series of values to another.
</description>
</method>
<method name="is_equal_approx">
@@ -494,14 +494,14 @@
<argument index="1" name="to" type="Variant" />
<argument index="2" name="weight" type="float" />
<description>
Linearly interpolates between two values by the factor defined in [code]weight[/code]. To perform interpolation, [code]weight[/code] should be between [code]0.0[/code] and [code]1.0[/code] (inclusive). However, values outside this range are allowed and can be used to perform [i]extrapolation[/i].
Linearly interpolates between two values by the factor defined in [code]weight[/code]. To perform interpolation, [code]weight[/code] should be between [code]0.0[/code] and [code]1.0[/code] (inclusive). However, values outside this range are allowed and can be used to perform [i]extrapolation[/i]. Use [method clamp] on the result of [method lerp] if this is not desired.
If the [code]from[/code] and [code]to[/code] arguments are of type [int] or [float], the return value is a [float].
If both are of the same vector type ([Vector2], [Vector3] or [Color]), the return value will be of the same type ([code]lerp[/code] then calls the vector type's [code]linear_interpolate[/code] method).
[codeblock]
lerp(0, 4, 0.75) # Returns 3.0
lerp(Vector2(1, 5), Vector2(3, 2), 0.5) # Returns Vector2(2, 3.5)
[/codeblock]
See also [method inverse_lerp] which performs the reverse of this operation. To perform eased interpolation with [method lerp], combine it with [method ease] or [method smoothstep].
See also [method inverse_lerp] which performs the reverse of this operation. To perform eased interpolation with [method lerp], combine it with [method ease] or [method smoothstep]. See also [method range_lerp] to map a continuous series of values to another.
</description>
</method>
<method name="lerp_angle">
@@ -892,10 +892,11 @@
<argument index="3" name="ostart" type="float" />
<argument index="4" name="ostop" type="float" />
<description>
Maps a [code]value[/code] from range [code][istart, istop][/code] to [code][ostart, ostop][/code].
Maps a [code]value[/code] from range [code][istart, istop][/code] to [code][ostart, ostop][/code]. See also [method lerp] and [method inverse_lerp]. If [code]value[/code] is outside [code][istart, istop][/code], then the resulting value will also be outside [code][ostart, ostop][/code]. Use [method clamp] on the result of [method range_lerp] if this is not desired.
[codeblock]
range_lerp(75, 0, 100, -1, 1) # Returns 0.5
[/codeblock]
For complex use cases where you need multiple ranges, consider using [Curve] or [Gradient] instead.
</description>
</method>
<method name="round">