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Improve range_lerp() and related methods documentation

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Hugo Locurcio 2022-08-05 09:54:46 +02:00
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11
doc/classes/@GlobalScope.xml
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@ -380,7 +380,7 @@
<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)
@ -389,7 +389,7 @@
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">
@ -444,11 +444,11 @@
<argument index="1" name="to" type="float" />
<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.
[codeblock]
lerp(0, 4, 0.75) # Returns 3.0
[/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">
@ -807,10 +807,11 @@
<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="rid_allocate_id">

1
doc/classes/Curve.xml
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@ -5,6 +5,7 @@
</brief_description>
<description>
A curve that can be saved and re-used for other objects. By default, it ranges between [code]0[/code] and [code]1[/code] on the Y axis and positions points relative to the [code]0.5[/code] Y position.
See also [Gradient] which is designed for color interpolation. See also [Curve2D] and [Curve3D].
</description>
<tutorials>
</tutorials>

1
doc/classes/Gradient.xml
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@ -5,6 +5,7 @@
</brief_description>
<description>
Given a set of colors, this resource will interpolate them in order. This means that if you have color 1, color 2 and color 3, the gradient will interpolate from color 1 to color 2 and from color 2 to color 3. The gradient will initially have 2 colors (black and white), one (black) at gradient lower offset 0 and the other (white) at the gradient higher offset 1.
See also [Curve] which supports more complex easing methods, but does not support colors.
</description>
<tutorials>
</tutorials>