26 #include <wtf/MathExtras.h>
30 ColorDistance::ColorDistance()
37 ColorDistance::ColorDistance(
const Color& fromColor,
const Color& toColor)
38 : m_redDiff(toColor.red() - fromColor.red())
39 , m_greenDiff(toColor.green() - fromColor.green())
40 , m_blueDiff(toColor.blue() - fromColor.blue())
44 ColorDistance::ColorDistance(
int redDiff,
int greenDiff,
int blueDiff)
46 , m_greenDiff(greenDiff)
47 , m_blueDiff(blueDiff)
51 static inline int clampColorValue(
int v)
60 ColorDistance ColorDistance::scaledDistance(
float scaleFactor)
const
62 return ColorDistance(static_cast<int>(scaleFactor * m_redDiff),
63 static_cast<int>(scaleFactor * m_greenDiff),
64 static_cast<int>(scaleFactor * m_blueDiff));
67 Color ColorDistance::addColorsAndClamp(
const Color& first,
const Color& second)
69 return Color(clampColorValue(first.red() + second.red()),
70 clampColorValue(first.green() + second.green()),
71 clampColorValue(first.blue() + second.blue()));
74 Color ColorDistance::addToColorAndClamp(
const Color& color)
const
76 return Color(clampColorValue(color.red() + m_redDiff),
77 clampColorValue(color.green() + m_greenDiff),
78 clampColorValue(color.blue() + m_blueDiff));
81 bool ColorDistance::isZero()
const
83 return (m_redDiff == 0 && m_blueDiff == 0 && m_greenDiff == 0);
86 float ColorDistance::distance()
const
89 return sqrtf(m_redDiff * m_redDiff + m_blueDiff * m_blueDiff + m_greenDiff * m_greenDiff);