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Merge pull request #12371 from donkeybonks/color-lighten-darken

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Add Color.lighten and Color.darken (like LESS.css or SASS) #2
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Rémi Verschelde 2017-11-22 01:27:01 +01:00 committed by GitHub
commit 9638c9cb5d
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 48 additions and 0 deletions
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18
core/color.h
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@ -101,6 +101,24 @@ struct Color {
return res;
}
_FORCE_INLINE_ Color darkened(float p_amount) const {
Color res = *this;
res.r = CLAMP(res.r * (1.0f - p_amount), 0.0, 1.0);
res.g = CLAMP(res.g * (1.0f - p_amount), 0.0, 1.0);
res.b = CLAMP(res.b * (1.0f - p_amount), 0.0, 1.0);
return res;
}
_FORCE_INLINE_ Color lightened(float p_amount) const {
Color res = *this;
res.r = CLAMP(res.r + (1.0f - res.r) * p_amount, 0.0, 1.0);
res.g = CLAMP(res.g + (1.0f - res.g) * p_amount, 0.0, 1.0);
res.b = CLAMP(res.b + (1.0f - res.b) * p_amount, 0.0, 1.0);
return res;
}
_FORCE_INLINE_ uint32_t to_rgbe9995() const {
const float pow2to9 = 512.0f;

4
core/variant_call.cpp
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@ -437,6 +437,8 @@ struct _VariantCall {
VCALL_LOCALMEM0R(Color, contrasted);
VCALL_LOCALMEM2R(Color, linear_interpolate);
VCALL_LOCALMEM1R(Color, blend);
VCALL_LOCALMEM1R(Color, lightened);
VCALL_LOCALMEM1R(Color, darkened);
VCALL_LOCALMEM1R(Color, to_html);
VCALL_LOCALMEM0R(RID, get_id);
@ -1578,6 +1580,8 @@ void register_variant_methods() {
ADDFUNC0R(COLOR, COLOR, Color, contrasted, varray());
ADDFUNC2R(COLOR, COLOR, Color, linear_interpolate, COLOR, "b", REAL, "t", varray());
ADDFUNC1R(COLOR, COLOR, Color, blend, COLOR, "over", varray());
ADDFUNC1R(COLOR, COLOR, Color, lightened, REAL, "amount", varray());
ADDFUNC1R(COLOR, COLOR, Color, darkened, REAL, "amount", varray());
ADDFUNC1R(COLOR, STRING, Color, to_html, BOOL, "with_alpha", varray(true));
ADDFUNC0R(_RID, INT, RID, get_id, varray());

26
doc/classes/Color.xml
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@ -126,6 +126,32 @@
[/codeblock]
</description>
</method>
<method name="lightened">
<return type="Color">
</return>
<argument index="0" name="amount" type="float">
</argument>
<description>
Returns a new color resulting from making this color lighter by the specified percentage (0-1).
[codeblock]
var green = Color(0.0, 1.0, 0.0)
var lightgreen = green.lightened(0.2) # 20% lighter than regular green
[/codeblock]
</description>
</method>
<method name="darkened">
<return type="Color">
</return>
<argument index="0" name="amount" type="float">
</argument>
<description>
Returns a new color resulting from making this color darker by the specified percentage (0-1).
[codeblock]
var green = Color(0.0, 1.0, 0.0)
var darkgreen = green.darkened(0.2) # 20% darker than regular green
[/codeblock]
</description>
</method>
<method name="linear_interpolate">
<return type="Color">
</return>