Improve Color8 documentation

This documents in which situations Color8 is most suited and its
precision limitations.
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Hugo Locurcio 2023-03-19 17:42:15 +01:00
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@ -18,12 +18,13 @@
<param index="2" name="b8" type="int" />
<param index="3" name="a8" type="int" default="255" />
<description>
Returns a [Color] constructed from red ([param r8]), green ([param g8]), blue ([param b8]), and optionally alpha ([param a8]) integer channels, each divided by [code]255.0[/code] for their final value.
Returns a [Color] constructed from red ([param r8]), green ([param g8]), blue ([param b8]), and optionally alpha ([param a8]) integer channels, each divided by [code]255.0[/code] for their final value. Using [method Color8] instead of the standard [Color] constructor is useful when you need to match exact color values in an [Image].
[codeblock]
var red = Color8(255, 0, 0) # Same as Color(1, 0, 0).
var dark_blue = Color8(0, 0, 51) # Same as Color(0, 0, 0.2).
var my_color = Color8(306, 255, 0, 102) # Same as Color(1.2, 1, 0, 0.4).
[/codeblock]
[b]Note:[/b] Due to the lower precision of [method Color8] compared to the standard [Color] constructor, a color created with [method Color8] will generally not be equal to the same color created with the standard [Color] constructor. Use [method Color.is_equal_approx] for comparisons to avoid issues with floating-point precision error.
</description>
</method>
<method name="assert">