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Dim (#312)

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This commit is contained in:
Michael Miller
2019-12-04 13:09:26 -08:00
committed by GitHub
parent d71ad7a1fa
commit 2f63405c5c
5 changed files with 29 additions and 0 deletions
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1
keywords.txt
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@@ -349,6 +349,7 @@ SetPixelColor KEYWORD2
GetPixelColor KEYWORD2
SwapPixelColor KEYWORD2
CalculateBrightness KEYWORD2
Dim KEYWORD2
Darken KEYWORD2
Lighten KEYWORD2
LinearBlend KEYWORD2

6
src/internal/RgbColor.cpp
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@@ -163,6 +163,12 @@ uint8_t RgbColor::CalculateBrightness() const
return (uint8_t)(((uint16_t)R + (uint16_t)G + (uint16_t)B) / 3);
}
RgbColor RgbColor::Dim(uint8_t ratio) const
{
// specifically avoids float math
return RgbColor(R * ratio / 255, G * ratio / 255, B * ratio / 255);
}
void RgbColor::Darken(uint8_t delta)
{
if (R > delta)

8
src/internal/RgbColor.h
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@@ -98,6 +98,14 @@ struct RgbColor
// ------------------------------------------------------------------------
uint8_t CalculateBrightness() const;
// ------------------------------------------------------------------------
// Dim will return a new color that is blended to black with the given ratio
// ratio - (0-255) where 255 will return the original color and 0 will return black
//
// NOTE: This is a simple linear blend
// ------------------------------------------------------------------------
RgbColor Dim(uint8_t ratio) const;
// ------------------------------------------------------------------------
// Darken will adjust the color by the given delta toward black
// NOTE: This is a simple linear change

6
src/internal/RgbwColor.cpp
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@@ -67,6 +67,12 @@ uint8_t RgbwColor::CalculateBrightness() const
}
}
RgbwColor RgbwColor::Dim(uint8_t ratio) const
{
// specifically avoids float math
return RgbwColor(R * ratio / 255, G * ratio / 255, B * ratio / 255, W * ratio / 255);
}
void RgbwColor::Darken(uint8_t delta)
{
if (R > delta)

8
src/internal/RgbwColor.h
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@@ -126,6 +126,14 @@ struct RgbwColor
// ------------------------------------------------------------------------
uint8_t CalculateBrightness() const;
// ------------------------------------------------------------------------
// Dim will return a new color that is blended to black with the given ratio
// ratio - (0-255) where 255 will return the original color and 0 will return black
//
// NOTE: This is a simple linear blend
// ------------------------------------------------------------------------
RgbwColor Dim(uint8_t ratio) const;
// ------------------------------------------------------------------------
// Darken will adjust the color by the given delta toward black
// NOTE: This is a simple linear change