#include <color.h>

Public Member Functions
constexpr	Color ()

	Color (const ColorHSB &hsbColor)

	Color (const Vector4 &value)

constexpr	Color (Scalar r, Scalar g, Scalar b, Scalar a)

constexpr bool	operator== (const Color &c) const

constexpr Color	operator+ (const Color &c) const

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color	operator+ (T value) const

constexpr Color	operator- (const Color &c) const

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color	operator- (T value) const

constexpr Color	operator* (const Color &c) const

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color	operator* (T value) const

constexpr Color	operator/ (const Color &c) const

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>
constexpr Color	operator/ (T value) const

constexpr Color	Premultiply () const

constexpr Color	Unpremultiply () const

constexpr Color	Clamp01 () const

constexpr std::array< uint8_t, 4 >	ToR8G8B8A8 () const
	Convert to R8G8B8A8 representation.

constexpr Color	WithAlpha (Scalar new_alpha) const

Color	Blend (Color source, BlendMode blend_mode) const
	Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new unpremultiplied color.

Color	ApplyColorMatrix (const ColorMatrix &color_matrix) const
	A color filter that transforms colors through a 4x5 color matrix.

Color	LinearToSRGB () const
	Convert the color from linear space to sRGB space.

Color	SRGBToLinear () const
	Convert the color from sRGB space to linear space.

constexpr bool	IsTransparent () const

constexpr bool	IsOpaque () const

Static Public Member Functions
static constexpr Color	MakeRGBA8 (uint8_t r, uint8_t g, uint8_t b, uint8_t a)

static constexpr uint32_t	ToIColor (Color color)
	Convert this color to a 32-bit representation.

static constexpr Color	Lerp (Color a, Color b, Scalar t)
	Return a color that is linearly interpolated between colors a and b, according to the value of t.

static constexpr Color	White ()

static constexpr Color	Black ()

static constexpr Color	WhiteTransparent ()

static constexpr Color	BlackTransparent ()

static constexpr Color	Red ()

static constexpr Color	Green ()

static constexpr Color	Blue ()

static constexpr Color	AliceBlue ()

static constexpr Color	AntiqueWhite ()

static constexpr Color	Aqua ()

static constexpr Color	AquaMarine ()

static constexpr Color	Azure ()

static constexpr Color	Beige ()

static constexpr Color	Bisque ()

static constexpr Color	BlanchedAlmond ()

static constexpr Color	BlueViolet ()

static constexpr Color	Brown ()

static constexpr Color	BurlyWood ()

static constexpr Color	CadetBlue ()

static constexpr Color	Chartreuse ()

static constexpr Color	Chocolate ()

static constexpr Color	Coral ()

static constexpr Color	CornflowerBlue ()

static constexpr Color	Cornsilk ()

static constexpr Color	Crimson ()

static constexpr Color	Cyan ()

static constexpr Color	DarkBlue ()

static constexpr Color	DarkCyan ()

static constexpr Color	DarkGoldenrod ()

static constexpr Color	DarkGray ()

static constexpr Color	DarkGreen ()

static constexpr Color	DarkGrey ()

static constexpr Color	DarkKhaki ()

static constexpr Color	DarkMagenta ()

static constexpr Color	DarkOliveGreen ()

static constexpr Color	DarkOrange ()

static constexpr Color	DarkOrchid ()

static constexpr Color	DarkRed ()

static constexpr Color	DarkSalmon ()

static constexpr Color	DarkSeagreen ()

static constexpr Color	DarkSlateBlue ()

static constexpr Color	DarkSlateGray ()

static constexpr Color	DarkSlateGrey ()

static constexpr Color	DarkTurquoise ()

static constexpr Color	DarkViolet ()

static constexpr Color	DeepPink ()

static constexpr Color	DeepSkyBlue ()

static constexpr Color	DimGray ()

static constexpr Color	DimGrey ()

static constexpr Color	DodgerBlue ()

static constexpr Color	Firebrick ()

static constexpr Color	FloralWhite ()

static constexpr Color	ForestGreen ()

static constexpr Color	Fuchsia ()

static constexpr Color	Gainsboro ()

static constexpr Color	Ghostwhite ()

static constexpr Color	Gold ()

static constexpr Color	Goldenrod ()

static constexpr Color	Gray ()

static constexpr Color	GreenYellow ()

static constexpr Color	Grey ()

static constexpr Color	Honeydew ()

static constexpr Color	HotPink ()

static constexpr Color	IndianRed ()

static constexpr Color	Indigo ()

static constexpr Color	Ivory ()

static constexpr Color	Khaki ()

static constexpr Color	Lavender ()

static constexpr Color	LavenderBlush ()

static constexpr Color	LawnGreen ()

static constexpr Color	LemonChiffon ()

static constexpr Color	LightBlue ()

static constexpr Color	LightCoral ()

static constexpr Color	LightCyan ()

static constexpr Color	LightGoldenrodYellow ()

static constexpr Color	LightGray ()

static constexpr Color	LightGreen ()

static constexpr Color	LightGrey ()

static constexpr Color	LightPink ()

static constexpr Color	LightSalmon ()

static constexpr Color	LightSeaGreen ()

static constexpr Color	LightSkyBlue ()

static constexpr Color	LightSlateGray ()

static constexpr Color	LightSlateGrey ()

static constexpr Color	LightSteelBlue ()

static constexpr Color	LightYellow ()

static constexpr Color	Lime ()

static constexpr Color	LimeGreen ()

static constexpr Color	Linen ()

static constexpr Color	Magenta ()

static constexpr Color	Maroon ()

static constexpr Color	MediumAquamarine ()

static constexpr Color	MediumBlue ()

static constexpr Color	MediumOrchid ()

static constexpr Color	MediumPurple ()

static constexpr Color	MediumSeagreen ()

static constexpr Color	MediumSlateBlue ()

static constexpr Color	MediumSpringGreen ()

static constexpr Color	MediumTurquoise ()

static constexpr Color	MediumVioletRed ()

static constexpr Color	MidnightBlue ()

static constexpr Color	MintCream ()

static constexpr Color	MistyRose ()

static constexpr Color	Moccasin ()

static constexpr Color	NavajoWhite ()

static constexpr Color	Navy ()

static constexpr Color	OldLace ()

static constexpr Color	Olive ()

static constexpr Color	OliveDrab ()

static constexpr Color	Orange ()

static constexpr Color	OrangeRed ()

static constexpr Color	Orchid ()

static constexpr Color	PaleGoldenrod ()

static constexpr Color	PaleGreen ()

static constexpr Color	PaleTurquoise ()

static constexpr Color	PaleVioletRed ()

static constexpr Color	PapayaWhip ()

static constexpr Color	Peachpuff ()

static constexpr Color	Peru ()

static constexpr Color	Pink ()

static constexpr Color	Plum ()

static constexpr Color	PowderBlue ()

static constexpr Color	Purple ()

static constexpr Color	RosyBrown ()

static constexpr Color	RoyalBlue ()

static constexpr Color	SaddleBrown ()

static constexpr Color	Salmon ()

static constexpr Color	SandyBrown ()

static constexpr Color	Seagreen ()

static constexpr Color	Seashell ()

static constexpr Color	Sienna ()

static constexpr Color	Silver ()

static constexpr Color	SkyBlue ()

static constexpr Color	SlateBlue ()

static constexpr Color	SlateGray ()

static constexpr Color	SlateGrey ()

static constexpr Color	Snow ()

static constexpr Color	SpringGreen ()

static constexpr Color	SteelBlue ()

static constexpr Color	Tan ()

static constexpr Color	Teal ()

static constexpr Color	Thistle ()

static constexpr Color	Tomato ()

static constexpr Color	Turquoise ()

static constexpr Color	Violet ()

static constexpr Color	Wheat ()

static constexpr Color	Whitesmoke ()

static constexpr Color	Yellow ()

static constexpr Color	YellowGreen ()

static Color	Random ()

Public Attributes
Scalar	red = 0.0

Scalar	green = 0.0

Scalar	blue = 0.0

Scalar	alpha = 0.0

Detailed Description

Represents a RGBA color

Definition at line 124 of file color.h.

Constructor & Destructor Documentation

◆ Color() [1/4]

constexpr impeller::Color::Color ( )

inlineconstexpr

Definition at line 145 of file color.h.

145{}

◆ Color() [2/4]

impeller::Color::Color ( const ColorHSB & hsbColor )

explicit

Definition at line 127 of file color.cc.

127: Color(hsbColor.ToRGBA()) {}

impeller::Color::Color

constexpr Color()

Definition color.h:145

◆ Color() [3/4]

impeller::Color::Color ( const Vector4 & value )

explicit

Definition at line 129 of file color.cc.

130 : red(value.x), green(value.y), blue(value.z), alpha(value.w) {}

value

uint8_t value

Definition fl_standard_message_codec.cc:36

impeller::Color::blue

Scalar blue

Definition color.h:138

impeller::Color::alpha

Scalar alpha

Definition color.h:143

impeller::Color::red

Scalar red

Definition color.h:128

impeller::Color::green

Scalar green

Definition color.h:133

◆ Color() [4/4]

constexpr impeller::Color::Color	(	Scalar	r,
		Scalar	g,
		Scalar	b,
		Scalar	a
	)

inlineconstexpr

Definition at line 151 of file color.h.

152 : red(r), green(g), blue(b), alpha(a) {}

b

static bool b

Definition ffi_native_test_module.c:74

a

struct MyStruct a[10]

Member Function Documentation

◆ AliceBlue()

static constexpr Color impeller::Color::AliceBlue ( )

inlinestaticconstexpr

Definition at line 274 of file color.h.

                                     {
    return {240.0f / 255.0f, 248.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ AntiqueWhite()

static constexpr Color impeller::Color::AntiqueWhite ( )

inlinestaticconstexpr

Definition at line 278 of file color.h.

                                        {
    return {250.0f / 255.0f, 235.0f / 255.0f, 215.0f / 255.0f, 1.0f};
  }

◆ ApplyColorMatrix()

Color impeller::Color::ApplyColorMatrix ( const ColorMatrix & color_matrix ) const

A color filter that transforms colors through a 4x5 color matrix.

   This filter can be used to change the saturation of pixels, convert
   from YUV to RGB, etc.

   Each channel of the output color is clamped to the 0 to 1 range.

See also: ColorMatrix

Definition at line 378 of file color.cc.

                                                                   {
  auto* c = color_matrix.array;
  return Color(
             c[0] * red + c[1] * green + c[2] * blue + c[3] * alpha + c[4],
             c[5] * red + c[6] * green + c[7] * blue + c[8] * alpha + c[9],
             c[10] * red + c[11] * green + c[12] * blue + c[13] * alpha + c[14],
             c[15] * red + c[16] * green + c[17] * blue + c[18] * alpha + c[19])
      .Clamp01();
}

◆ Aqua()

static constexpr Color impeller::Color::Aqua ( )

inlinestaticconstexpr

Definition at line 282 of file color.h.

                                {
    return {0.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ AquaMarine()

static constexpr Color impeller::Color::AquaMarine ( )

inlinestaticconstexpr

Definition at line 286 of file color.h.

                                      {
    return {127.0f / 255.0f, 255.0f / 255.0f, 212.0f / 255.0f, 1.0f};
  }

◆ Azure()

static constexpr Color impeller::Color::Azure ( )

inlinestaticconstexpr

Definition at line 290 of file color.h.

                                 {
    return {240.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ Beige()

static constexpr Color impeller::Color::Beige ( )

inlinestaticconstexpr

Definition at line 294 of file color.h.

                                 {
    return {245.0f / 255.0f, 245.0f / 255.0f, 220.0f / 255.0f, 1.0f};
  }

◆ Bisque()

static constexpr Color impeller::Color::Bisque ( )

inlinestaticconstexpr

Definition at line 298 of file color.h.

                                  {
    return {255.0f / 255.0f, 228.0f / 255.0f, 196.0f / 255.0f, 1.0f};
  }

◆ Black()

static constexpr Color impeller::Color::Black ( )

inlinestaticconstexpr

Definition at line 258 of file color.h.

258{ return {0.0f, 0.0f, 0.0f, 1.0f}; }

◆ BlackTransparent()

static constexpr Color impeller::Color::BlackTransparent ( )

inlinestaticconstexpr

Definition at line 262 of file color.h.

262{ return {0.0f, 0.0f, 0.0f, 0.0f}; }

◆ BlanchedAlmond()

static constexpr Color impeller::Color::BlanchedAlmond ( )

inlinestaticconstexpr

Definition at line 302 of file color.h.

                                          {
    return {255.0f / 255.0f, 235.0f / 255.0f, 205.0f / 255.0f, 1.0f};
  }

◆ Blend()

Color impeller::Color::Blend	(	Color	source,
		BlendMode	blend_mode
	)		const

Blends an unpremultiplied destination color into a given unpremultiplied source color to form a new unpremultiplied color.

If either the source or destination are premultiplied, the result will be incorrect.

Definition at line 234 of file color.cc.

                                                        {
  Color dst = *this;
 
  switch (blend_mode) {
    case BlendMode::kClear:
      return Color::BlackTransparent();
    case BlendMode::kSource:
      return src;
    case BlendMode::kDestination:
      return dst;
    case BlendMode::kSourceOver:
      // r = s + (1-sa)*d
      return (src.Premultiply() + dst.Premultiply() * (1 - src.alpha))
          .Unpremultiply();
    case BlendMode::kDestinationOver:
      // r = d + (1-da)*s
      return (dst.Premultiply() + src.Premultiply() * (1 - dst.alpha))
          .Unpremultiply();
    case BlendMode::kSourceIn:
      // r = s * da
      return (src.Premultiply() * dst.alpha).Unpremultiply();
    case BlendMode::kDestinationIn:
      // r = d * sa
      return (dst.Premultiply() * src.alpha).Unpremultiply();
    case BlendMode::kSourceOut:
      // r = s * ( 1- da)
      return (src.Premultiply() * (1 - dst.alpha)).Unpremultiply();
    case BlendMode::kDestinationOut:
      // r = d * (1-sa)
      return (dst.Premultiply() * (1 - src.alpha)).Unpremultiply();
    case BlendMode::kSourceATop:
      // r = s*da + d*(1-sa)
      return (src.Premultiply() * dst.alpha +
              dst.Premultiply() * (1 - src.alpha))
          .Unpremultiply();
    case BlendMode::kDestinationATop:
      // r = d*sa + s*(1-da)
      return (dst.Premultiply() * src.alpha +
              src.Premultiply() * (1 - dst.alpha))
          .Unpremultiply();
    case BlendMode::kXor:
      // r = s*(1-da) + d*(1-sa)
      return (src.Premultiply() * (1 - dst.alpha) +
              dst.Premultiply() * (1 - src.alpha))
          .Unpremultiply();
    case BlendMode::kPlus:
      // r = min(s + d, 1)
      return (Min(src.Premultiply() + dst.Premultiply(), 1)).Unpremultiply();
    case BlendMode::kModulate:
      // r = s*d
      return (src.Premultiply() * dst.Premultiply()).Unpremultiply();
    case BlendMode::kScreen: {
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return s + d - s * d;
      });
    }
    case BlendMode::kOverlay:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        // The same as HardLight, but with the source and destination reversed.
        Vector3 screen_src = 2.0 * d - 1.0;
        Vector3 screen = screen_src + s - screen_src * s;
        return ComponentChoose(s * (2.0 * d),  //
                               screen,         //
                               d,              //
                               0.5);
      });
    case BlendMode::kDarken:
      return DoColorBlend(
          dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Min(s); });
    case BlendMode::kLighten:
      return DoColorBlend(
          dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d.Max(s); });
    case BlendMode::kColorDodge:
      return DoColorBlendComponents(dst, src, [](Scalar d, Scalar s) -> Scalar {
        if (d < kEhCloseEnough) {
          return 0.0f;
        }
        if (1.0 - s < kEhCloseEnough) {
          return 1.0f;
        }
        return std::min(1.0f, d / (1.0f - s));
      });
    case BlendMode::kColorBurn:
      return DoColorBlendComponents(dst, src, [](Scalar d, Scalar s) -> Scalar {
        if (1.0 - d < kEhCloseEnough) {
          return 1.0f;
        }
        if (s < kEhCloseEnough) {
          return 0.0f;
        }
        return 1.0f - std::min(1.0f, (1.0f - d) / s);
      });
    case BlendMode::kHardLight:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        Vector3 screen_src = 2.0 * s - 1.0;
        Vector3 screen = screen_src + d - screen_src * d;
        return ComponentChoose(d * (2.0 * s),  //
                               screen,         //
                               s,              //
                               0.5);
      });
    case BlendMode::kSoftLight:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        Vector3 D = ComponentChoose(((16.0 * d - 12.0) * d + 4.0) * d,  //
                                    Vector3(std::sqrt(d.x), std::sqrt(d.y),
                                            std::sqrt(d.z)),  //
                                    d,                        //
                                    0.25);
        return ComponentChoose(d - (1.0 - 2.0 * s) * d * (1.0 - d),  //
                               d + (2.0 * s - 1.0) * (D - d),        //
                               s,                                    //
                               0.5);
      });
    case BlendMode::kDifference:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return (d - s).Abs();
      });
    case BlendMode::kExclusion:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return d + s - 2.0f * d * s;
      });
    case BlendMode::kMultiply:
      return DoColorBlend(
          dst, src, [](Vector3 d, Vector3 s) -> Vector3 { return d * s; });
    case BlendMode::kHue: {
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return SetLuminosity(SetSaturation(s, Saturation(d)), Luminosity(d));
      });
    }
    case BlendMode::kSaturation:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return SetLuminosity(SetSaturation(d, Saturation(s)), Luminosity(d));
      });
    case BlendMode::kColor:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return SetLuminosity(s, Luminosity(d));
      });
    case BlendMode::kLuminosity:
      return DoColorBlend(dst, src, [](Vector3 d, Vector3 s) -> Vector3 {
        return SetLuminosity(d, Luminosity(s));
      });
  }
}

◆ Blue()

static constexpr Color impeller::Color::Blue ( )

inlinestaticconstexpr

Definition at line 268 of file color.h.

268{ return {0.0f, 0.0f, 1.0f, 1.0f}; }

◆ BlueViolet()

static constexpr Color impeller::Color::BlueViolet ( )

inlinestaticconstexpr

Definition at line 306 of file color.h.

                                      {
    return {138.0f / 255.0f, 43.0f / 255.0f, 226.0f / 255.0f, 1.0f};
  }

◆ Brown()

static constexpr Color impeller::Color::Brown ( )

inlinestaticconstexpr

Definition at line 310 of file color.h.

                                 {
    return {165.0f / 255.0f, 42.0f / 255.0f, 42.0f / 255.0f, 1.0f};
  }

◆ BurlyWood()

static constexpr Color impeller::Color::BurlyWood ( )

inlinestaticconstexpr

Definition at line 314 of file color.h.

                                     {
    return {222.0f / 255.0f, 184.0f / 255.0f, 135.0f / 255.0f, 1.0f};
  }

◆ CadetBlue()

static constexpr Color impeller::Color::CadetBlue ( )

inlinestaticconstexpr

Definition at line 318 of file color.h.

                                     {
    return {95.0f / 255.0f, 158.0f / 255.0f, 160.0f / 255.0f, 1.0f};
  }

◆ Chartreuse()

static constexpr Color impeller::Color::Chartreuse ( )

inlinestaticconstexpr

Definition at line 322 of file color.h.

                                      {
    return {127.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ Chocolate()

static constexpr Color impeller::Color::Chocolate ( )

inlinestaticconstexpr

Definition at line 326 of file color.h.

                                     {
    return {210.0f / 255.0f, 105.0f / 255.0f, 30.0f / 255.0f, 1.0f};
  }

◆ Clamp01()

constexpr Color impeller::Color::Clamp01 ( ) const

inlineconstexpr

Definition at line 238 of file color.h.

                                  {
    return Color(std::clamp(red, 0.0f, 1.0f), std::clamp(green, 0.0f, 1.0f),
                 std::clamp(blue, 0.0f, 1.0f), std::clamp(alpha, 0.0f, 1.0f));
  }

◆ Coral()

static constexpr Color impeller::Color::Coral ( )

inlinestaticconstexpr

Definition at line 330 of file color.h.

                                 {
    return {255.0f / 255.0f, 127.0f / 255.0f, 80.0f / 255.0f, 1.0f};
  }

◆ CornflowerBlue()

static constexpr Color impeller::Color::CornflowerBlue ( )

inlinestaticconstexpr

Definition at line 334 of file color.h.

                                          {
    return {100.0f / 255.0f, 149.0f / 255.0f, 237.0f / 255.0f, 1.0f};
  }

◆ Cornsilk()

static constexpr Color impeller::Color::Cornsilk ( )

inlinestaticconstexpr

Definition at line 338 of file color.h.

                                    {
    return {255.0f / 255.0f, 248.0f / 255.0f, 220.0f / 255.0f, 1.0f};
  }

◆ Crimson()

static constexpr Color impeller::Color::Crimson ( )

inlinestaticconstexpr

Definition at line 342 of file color.h.

                                   {
    return {220.0f / 255.0f, 20.0f / 255.0f, 60.0f / 255.0f, 1.0f};
  }

◆ Cyan()

static constexpr Color impeller::Color::Cyan ( )

inlinestaticconstexpr

Definition at line 346 of file color.h.

                                {
    return {0.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ DarkBlue()

static constexpr Color impeller::Color::DarkBlue ( )

inlinestaticconstexpr

Definition at line 350 of file color.h.

                                    {
    return {0.0f / 255.0f, 0.0f / 255.0f, 139.0f / 255.0f, 1.0f};
  }

◆ DarkCyan()

static constexpr Color impeller::Color::DarkCyan ( )

inlinestaticconstexpr

Definition at line 354 of file color.h.

                                    {
    return {0.0f / 255.0f, 139.0f / 255.0f, 139.0f / 255.0f, 1.0f};
  }

◆ DarkGoldenrod()

static constexpr Color impeller::Color::DarkGoldenrod ( )

inlinestaticconstexpr

Definition at line 358 of file color.h.

                                         {
    return {184.0f / 255.0f, 134.0f / 255.0f, 11.0f / 255.0f, 1.0f};
  }

◆ DarkGray()

static constexpr Color impeller::Color::DarkGray ( )

inlinestaticconstexpr

Definition at line 362 of file color.h.

                                    {
    return {169.0f / 255.0f, 169.0f / 255.0f, 169.0f / 255.0f, 1.0f};
  }

◆ DarkGreen()

static constexpr Color impeller::Color::DarkGreen ( )

inlinestaticconstexpr

Definition at line 366 of file color.h.

                                     {
    return {0.0f / 255.0f, 100.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ DarkGrey()

static constexpr Color impeller::Color::DarkGrey ( )

inlinestaticconstexpr

Definition at line 370 of file color.h.

                                    {
    return {169.0f / 255.0f, 169.0f / 255.0f, 169.0f / 255.0f, 1.0f};
  }

◆ DarkKhaki()

static constexpr Color impeller::Color::DarkKhaki ( )

inlinestaticconstexpr

Definition at line 374 of file color.h.

                                     {
    return {189.0f / 255.0f, 183.0f / 255.0f, 107.0f / 255.0f, 1.0f};
  }

◆ DarkMagenta()

static constexpr Color impeller::Color::DarkMagenta ( )

inlinestaticconstexpr

Definition at line 378 of file color.h.

                                       {
    return {139.0f / 255.0f, 0.0f / 255.0f, 139.0f / 255.0f, 1.0f};
  }

◆ DarkOliveGreen()

static constexpr Color impeller::Color::DarkOliveGreen ( )

inlinestaticconstexpr

Definition at line 382 of file color.h.

                                          {
    return {85.0f / 255.0f, 107.0f / 255.0f, 47.0f / 255.0f, 1.0f};
  }

◆ DarkOrange()

static constexpr Color impeller::Color::DarkOrange ( )

inlinestaticconstexpr

Definition at line 386 of file color.h.

                                      {
    return {255.0f / 255.0f, 140.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ DarkOrchid()

static constexpr Color impeller::Color::DarkOrchid ( )

inlinestaticconstexpr

Definition at line 390 of file color.h.

                                      {
    return {153.0f / 255.0f, 50.0f / 255.0f, 204.0f / 255.0f, 1.0f};
  }

◆ DarkRed()

static constexpr Color impeller::Color::DarkRed ( )

inlinestaticconstexpr

Definition at line 394 of file color.h.

                                   {
    return {139.0f / 255.0f, 0.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ DarkSalmon()

static constexpr Color impeller::Color::DarkSalmon ( )

inlinestaticconstexpr

Definition at line 398 of file color.h.

                                      {
    return {233.0f / 255.0f, 150.0f / 255.0f, 122.0f / 255.0f, 1.0f};
  }

◆ DarkSeagreen()

static constexpr Color impeller::Color::DarkSeagreen ( )

inlinestaticconstexpr

Definition at line 402 of file color.h.

                                        {
    return {143.0f / 255.0f, 188.0f / 255.0f, 143.0f / 255.0f, 1.0f};
  }

◆ DarkSlateBlue()

static constexpr Color impeller::Color::DarkSlateBlue ( )

inlinestaticconstexpr

Definition at line 406 of file color.h.

                                         {
    return {72.0f / 255.0f, 61.0f / 255.0f, 139.0f / 255.0f, 1.0f};
  }

◆ DarkSlateGray()

static constexpr Color impeller::Color::DarkSlateGray ( )

inlinestaticconstexpr

Definition at line 410 of file color.h.

                                         {
    return {47.0f / 255.0f, 79.0f / 255.0f, 79.0f / 255.0f, 1.0f};
  }

◆ DarkSlateGrey()

static constexpr Color impeller::Color::DarkSlateGrey ( )

inlinestaticconstexpr

Definition at line 414 of file color.h.

                                         {
    return {47.0f / 255.0f, 79.0f / 255.0f, 79.0f / 255.0f, 1.0f};
  }

◆ DarkTurquoise()

static constexpr Color impeller::Color::DarkTurquoise ( )

inlinestaticconstexpr

Definition at line 418 of file color.h.

                                         {
    return {0.0f / 255.0f, 206.0f / 255.0f, 209.0f / 255.0f, 1.0f};
  }

◆ DarkViolet()

static constexpr Color impeller::Color::DarkViolet ( )

inlinestaticconstexpr

Definition at line 422 of file color.h.

                                      {
    return {148.0f / 255.0f, 0.0f / 255.0f, 211.0f / 255.0f, 1.0f};
  }

◆ DeepPink()

static constexpr Color impeller::Color::DeepPink ( )

inlinestaticconstexpr

Definition at line 426 of file color.h.

                                    {
    return {255.0f / 255.0f, 20.0f / 255.0f, 147.0f / 255.0f, 1.0f};
  }

◆ DeepSkyBlue()

static constexpr Color impeller::Color::DeepSkyBlue ( )

inlinestaticconstexpr

Definition at line 430 of file color.h.

                                       {
    return {0.0f / 255.0f, 191.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ DimGray()

static constexpr Color impeller::Color::DimGray ( )

inlinestaticconstexpr

Definition at line 434 of file color.h.

                                   {
    return {105.0f / 255.0f, 105.0f / 255.0f, 105.0f / 255.0f, 1.0f};
  }

◆ DimGrey()

static constexpr Color impeller::Color::DimGrey ( )

inlinestaticconstexpr

Definition at line 438 of file color.h.

                                   {
    return {105.0f / 255.0f, 105.0f / 255.0f, 105.0f / 255.0f, 1.0f};
  }

◆ DodgerBlue()

static constexpr Color impeller::Color::DodgerBlue ( )

inlinestaticconstexpr

Definition at line 442 of file color.h.

                                      {
    return {30.0f / 255.0f, 144.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ Firebrick()

static constexpr Color impeller::Color::Firebrick ( )

inlinestaticconstexpr

Definition at line 446 of file color.h.

                                     {
    return {178.0f / 255.0f, 34.0f / 255.0f, 34.0f / 255.0f, 1.0f};
  }

◆ FloralWhite()

static constexpr Color impeller::Color::FloralWhite ( )

inlinestaticconstexpr

Definition at line 450 of file color.h.

                                       {
    return {255.0f / 255.0f, 250.0f / 255.0f, 240.0f / 255.0f, 1.0f};
  }

◆ ForestGreen()

static constexpr Color impeller::Color::ForestGreen ( )

inlinestaticconstexpr

Definition at line 454 of file color.h.

                                       {
    return {34.0f / 255.0f, 139.0f / 255.0f, 34.0f / 255.0f, 1.0f};
  }

◆ Fuchsia()

static constexpr Color impeller::Color::Fuchsia ( )

inlinestaticconstexpr

Definition at line 458 of file color.h.

                                   {
    return {255.0f / 255.0f, 0.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ Gainsboro()

static constexpr Color impeller::Color::Gainsboro ( )

inlinestaticconstexpr

Definition at line 462 of file color.h.

                                     {
    return {220.0f / 255.0f, 220.0f / 255.0f, 220.0f / 255.0f, 1.0f};
  }

◆ Ghostwhite()

static constexpr Color impeller::Color::Ghostwhite ( )

inlinestaticconstexpr

Definition at line 466 of file color.h.

                                      {
    return {248.0f / 255.0f, 248.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ Gold()

static constexpr Color impeller::Color::Gold ( )

inlinestaticconstexpr

Definition at line 470 of file color.h.

                                {
    return {255.0f / 255.0f, 215.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ Goldenrod()

static constexpr Color impeller::Color::Goldenrod ( )

inlinestaticconstexpr

Definition at line 474 of file color.h.

                                     {
    return {218.0f / 255.0f, 165.0f / 255.0f, 32.0f / 255.0f, 1.0f};
  }

◆ Gray()

static constexpr Color impeller::Color::Gray ( )

inlinestaticconstexpr

Definition at line 478 of file color.h.

                                {
    return {128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
  }

◆ Green()

static constexpr Color impeller::Color::Green ( )

inlinestaticconstexpr

Definition at line 266 of file color.h.

266{ return {0.0f, 1.0f, 0.0f, 1.0f}; }

◆ GreenYellow()

static constexpr Color impeller::Color::GreenYellow ( )

inlinestaticconstexpr

Definition at line 482 of file color.h.

                                       {
    return {173.0f / 255.0f, 255.0f / 255.0f, 47.0f / 255.0f, 1.0f};
  }

◆ Grey()

static constexpr Color impeller::Color::Grey ( )

inlinestaticconstexpr

Definition at line 486 of file color.h.

                                {
    return {128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
  }

◆ Honeydew()

static constexpr Color impeller::Color::Honeydew ( )

inlinestaticconstexpr

Definition at line 490 of file color.h.

                                    {
    return {240.0f / 255.0f, 255.0f / 255.0f, 240.0f / 255.0f, 1.0f};
  }

◆ HotPink()

static constexpr Color impeller::Color::HotPink ( )

inlinestaticconstexpr

Definition at line 494 of file color.h.

                                   {
    return {255.0f / 255.0f, 105.0f / 255.0f, 180.0f / 255.0f, 1.0f};
  }

◆ IndianRed()

static constexpr Color impeller::Color::IndianRed ( )

inlinestaticconstexpr

Definition at line 498 of file color.h.

                                     {
    return {205.0f / 255.0f, 92.0f / 255.0f, 92.0f / 255.0f, 1.0f};
  }

◆ Indigo()

static constexpr Color impeller::Color::Indigo ( )

inlinestaticconstexpr

Definition at line 502 of file color.h.

                                  {
    return {75.0f / 255.0f, 0.0f / 255.0f, 130.0f / 255.0f, 1.0f};
  }

◆ IsOpaque()

constexpr bool impeller::Color::IsOpaque ( ) const

inlineconstexpr

Definition at line 886 of file color.h.

886{ return alpha == 1.0f; }

◆ IsTransparent()

constexpr bool impeller::Color::IsTransparent ( ) const

inlineconstexpr

Definition at line 884 of file color.h.

884{ return alpha == 0.0f; }

◆ Ivory()

static constexpr Color impeller::Color::Ivory ( )

inlinestaticconstexpr

Definition at line 506 of file color.h.

                                 {
    return {255.0f / 255.0f, 255.0f / 255.0f, 240.0f / 255.0f, 1.0f};
  }

◆ Khaki()

static constexpr Color impeller::Color::Khaki ( )

inlinestaticconstexpr

Definition at line 510 of file color.h.

                                 {
    return {240.0f / 255.0f, 230.0f / 255.0f, 140.0f / 255.0f, 1.0f};
  }

◆ Lavender()

static constexpr Color impeller::Color::Lavender ( )

inlinestaticconstexpr

Definition at line 514 of file color.h.

                                    {
    return {230.0f / 255.0f, 230.0f / 255.0f, 250.0f / 255.0f, 1.0f};
  }

◆ LavenderBlush()

static constexpr Color impeller::Color::LavenderBlush ( )

inlinestaticconstexpr

Definition at line 518 of file color.h.

                                         {
    return {255.0f / 255.0f, 240.0f / 255.0f, 245.0f / 255.0f, 1.0f};
  }

◆ LawnGreen()

static constexpr Color impeller::Color::LawnGreen ( )

inlinestaticconstexpr

Definition at line 522 of file color.h.

                                     {
    return {124.0f / 255.0f, 252.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ LemonChiffon()

static constexpr Color impeller::Color::LemonChiffon ( )

inlinestaticconstexpr

Definition at line 526 of file color.h.

                                        {
    return {255.0f / 255.0f, 250.0f / 255.0f, 205.0f / 255.0f, 1.0f};
  }

◆ Lerp()

static constexpr Color impeller::Color::Lerp	(	Color	a,
		Color	b,
		Scalar	t
	)

inlinestaticconstexpr

Return a color that is linearly interpolated between colors a and b, according to the value of t.

Parameters

a	The lower color.
b	The upper color.
t	A value between 0.0f and 1.0f, inclusive.

Returns: constexpr Color

Definition at line 234 of file color.h.

                                                          {
    return a + (b - a) * t;
  }

◆ LightBlue()

static constexpr Color impeller::Color::LightBlue ( )

inlinestaticconstexpr

Definition at line 530 of file color.h.

                                     {
    return {173.0f / 255.0f, 216.0f / 255.0f, 230.0f / 255.0f, 1.0f};
  }

◆ LightCoral()

static constexpr Color impeller::Color::LightCoral ( )

inlinestaticconstexpr

Definition at line 534 of file color.h.

                                      {
    return {240.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
  }

◆ LightCyan()

static constexpr Color impeller::Color::LightCyan ( )

inlinestaticconstexpr

Definition at line 538 of file color.h.

                                     {
    return {224.0f / 255.0f, 255.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ LightGoldenrodYellow()

static constexpr Color impeller::Color::LightGoldenrodYellow ( )

inlinestaticconstexpr

Definition at line 542 of file color.h.

                                                {
    return {50.0f / 255.0f, 250.0f / 255.0f, 210.0f / 255.0f, 1.0f};
  }

◆ LightGray()

static constexpr Color impeller::Color::LightGray ( )

inlinestaticconstexpr

Definition at line 546 of file color.h.

                                     {
    return {211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f};
  }

◆ LightGreen()

static constexpr Color impeller::Color::LightGreen ( )

inlinestaticconstexpr

Definition at line 550 of file color.h.

                                      {
    return {144.0f / 255.0f, 238.0f / 255.0f, 144.0f / 255.0f, 1.0f};
  }

◆ LightGrey()

static constexpr Color impeller::Color::LightGrey ( )

inlinestaticconstexpr

Definition at line 554 of file color.h.

                                     {
    return {211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f};
  }

◆ LightPink()

static constexpr Color impeller::Color::LightPink ( )

inlinestaticconstexpr

Definition at line 558 of file color.h.

                                     {
    return {255.0f / 255.0f, 182.0f / 255.0f, 193.0f / 255.0f, 1.0f};
  }

◆ LightSalmon()

static constexpr Color impeller::Color::LightSalmon ( )

inlinestaticconstexpr

Definition at line 562 of file color.h.

                                       {
    return {255.0f / 255.0f, 160.0f / 255.0f, 122.0f / 255.0f, 1.0f};
  }

◆ LightSeaGreen()

static constexpr Color impeller::Color::LightSeaGreen ( )

inlinestaticconstexpr

Definition at line 566 of file color.h.

                                         {
    return {32.0f / 255.0f, 178.0f / 255.0f, 170.0f / 255.0f, 1.0f};
  }

◆ LightSkyBlue()

static constexpr Color impeller::Color::LightSkyBlue ( )

inlinestaticconstexpr

Definition at line 570 of file color.h.

                                        {
    return {135.0f / 255.0f, 206.0f / 255.0f, 250.0f / 255.0f, 1.0f};
  }

◆ LightSlateGray()

static constexpr Color impeller::Color::LightSlateGray ( )

inlinestaticconstexpr

Definition at line 574 of file color.h.

                                          {
    return {119.0f / 255.0f, 136.0f / 255.0f, 153.0f / 255.0f, 1.0f};
  }

◆ LightSlateGrey()

static constexpr Color impeller::Color::LightSlateGrey ( )

inlinestaticconstexpr

Definition at line 578 of file color.h.

                                          {
    return {119.0f / 255.0f, 136.0f / 255.0f, 153.0f / 255.0f, 1.0f};
  }

◆ LightSteelBlue()

static constexpr Color impeller::Color::LightSteelBlue ( )

inlinestaticconstexpr

Definition at line 582 of file color.h.

                                          {
    return {176.0f / 255.0f, 196.0f / 255.0f, 222.0f / 255.0f, 1.0f};
  }

◆ LightYellow()

static constexpr Color impeller::Color::LightYellow ( )

inlinestaticconstexpr

Definition at line 586 of file color.h.

                                       {
    return {255.0f / 255.0f, 255.0f / 255.0f, 224.0f / 255.0f, 1.0f};
  }

◆ Lime()

static constexpr Color impeller::Color::Lime ( )

inlinestaticconstexpr

Definition at line 590 of file color.h.

                                {
    return {0.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ LimeGreen()

static constexpr Color impeller::Color::LimeGreen ( )

inlinestaticconstexpr

Definition at line 594 of file color.h.

                                     {
    return {50.0f / 255.0f, 205.0f / 255.0f, 50.0f / 255.0f, 1.0f};
  }

◆ LinearToSRGB()

Color impeller::Color::LinearToSRGB ( ) const

Convert the color from linear space to sRGB space.

   The color is assumed to be unpremultiplied. If the color is
   premultipled, the conversion output will be incorrect.

Definition at line 388 of file color.cc.

                                {
  static auto conversion = [](Scalar component) {
    if (component <= 0.0031308) {
      return component * 12.92;
    }
    return 1.055 * pow(component, (1.0 / 2.4)) - 0.055;
  };
 
  return Color(conversion(red), conversion(green), conversion(blue), alpha);
}

◆ Linen()

static constexpr Color impeller::Color::Linen ( )

inlinestaticconstexpr

Definition at line 598 of file color.h.

                                 {
    return {250.0f / 255.0f, 240.0f / 255.0f, 230.0f / 255.0f, 1.0f};
  }

◆ Magenta()

static constexpr Color impeller::Color::Magenta ( )

inlinestaticconstexpr

Definition at line 602 of file color.h.

                                   {
    return {255.0f / 255.0f, 0.0f / 255.0f, 255.0f / 255.0f, 1.0f};
  }

◆ MakeRGBA8()

static constexpr Color impeller::Color::MakeRGBA8	(	uint8_t	r,
		uint8_t	g,
		uint8_t	b,
		uint8_t	a
	)

inlinestaticconstexpr

Definition at line 154 of file color.h.

                                                                               {
    return Color(
        static_cast<Scalar>(r) / 255.0f, static_cast<Scalar>(g) / 255.0f,
        static_cast<Scalar>(b) / 255.0f, static_cast<Scalar>(a) / 255.0f);
  }

◆ Maroon()

static constexpr Color impeller::Color::Maroon ( )

inlinestaticconstexpr

Definition at line 606 of file color.h.

                                  {
    return {128.0f / 255.0f, 0.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ MediumAquamarine()

static constexpr Color impeller::Color::MediumAquamarine ( )

inlinestaticconstexpr

Definition at line 610 of file color.h.

                                            {
    return {102.0f / 255.0f, 205.0f / 255.0f, 170.0f / 255.0f, 1.0f};
  }

◆ MediumBlue()

static constexpr Color impeller::Color::MediumBlue ( )

inlinestaticconstexpr

Definition at line 614 of file color.h.

                                      {
    return {0.0f / 255.0f, 0.0f / 255.0f, 205.0f / 255.0f, 1.0f};
  }

◆ MediumOrchid()

static constexpr Color impeller::Color::MediumOrchid ( )

inlinestaticconstexpr

Definition at line 618 of file color.h.

                                        {
    return {186.0f / 255.0f, 85.0f / 255.0f, 211.0f / 255.0f, 1.0f};
  }

◆ MediumPurple()

static constexpr Color impeller::Color::MediumPurple ( )

inlinestaticconstexpr

Definition at line 622 of file color.h.

                                        {
    return {147.0f / 255.0f, 112.0f / 255.0f, 219.0f / 255.0f, 1.0f};
  }

◆ MediumSeagreen()

static constexpr Color impeller::Color::MediumSeagreen ( )

inlinestaticconstexpr

Definition at line 626 of file color.h.

                                          {
    return {60.0f / 255.0f, 179.0f / 255.0f, 113.0f / 255.0f, 1.0f};
  }

◆ MediumSlateBlue()

static constexpr Color impeller::Color::MediumSlateBlue ( )

inlinestaticconstexpr

Definition at line 630 of file color.h.

                                           {
    return {123.0f / 255.0f, 104.0f / 255.0f, 238.0f / 255.0f, 1.0f};
  }

◆ MediumSpringGreen()

static constexpr Color impeller::Color::MediumSpringGreen ( )

inlinestaticconstexpr

Definition at line 634 of file color.h.

                                             {
    return {0.0f / 255.0f, 250.0f / 255.0f, 154.0f / 255.0f, 1.0f};
  }

◆ MediumTurquoise()

static constexpr Color impeller::Color::MediumTurquoise ( )

inlinestaticconstexpr

Definition at line 638 of file color.h.

                                           {
    return {72.0f / 255.0f, 209.0f / 255.0f, 204.0f / 255.0f, 1.0f};
  }

◆ MediumVioletRed()

static constexpr Color impeller::Color::MediumVioletRed ( )

inlinestaticconstexpr

Definition at line 642 of file color.h.

                                           {
    return {199.0f / 255.0f, 21.0f / 255.0f, 133.0f / 255.0f, 1.0f};
  }

◆ MidnightBlue()

static constexpr Color impeller::Color::MidnightBlue ( )

inlinestaticconstexpr

Definition at line 646 of file color.h.

                                        {
    return {25.0f / 255.0f, 25.0f / 255.0f, 112.0f / 255.0f, 1.0f};
  }

◆ MintCream()

static constexpr Color impeller::Color::MintCream ( )

inlinestaticconstexpr

Definition at line 650 of file color.h.

                                     {
    return {245.0f / 255.0f, 255.0f / 255.0f, 250.0f / 255.0f, 1.0f};
  }

◆ MistyRose()

static constexpr Color impeller::Color::MistyRose ( )

inlinestaticconstexpr

Definition at line 654 of file color.h.

                                     {
    return {255.0f / 255.0f, 228.0f / 255.0f, 225.0f / 255.0f, 1.0f};
  }

◆ Moccasin()

static constexpr Color impeller::Color::Moccasin ( )

inlinestaticconstexpr

Definition at line 658 of file color.h.

                                    {
    return {255.0f / 255.0f, 228.0f / 255.0f, 181.0f / 255.0f, 1.0f};
  }

◆ NavajoWhite()

static constexpr Color impeller::Color::NavajoWhite ( )

inlinestaticconstexpr

Definition at line 662 of file color.h.

                                       {
    return {255.0f / 255.0f, 222.0f / 255.0f, 173.0f / 255.0f, 1.0f};
  }

◆ Navy()

static constexpr Color impeller::Color::Navy ( )

inlinestaticconstexpr

Definition at line 666 of file color.h.

                                {
    return {0.0f / 255.0f, 0.0f / 255.0f, 128.0f / 255.0f, 1.0f};
  }

◆ OldLace()

static constexpr Color impeller::Color::OldLace ( )

inlinestaticconstexpr

Definition at line 670 of file color.h.

                                   {
    return {253.0f / 255.0f, 245.0f / 255.0f, 230.0f / 255.0f, 1.0f};
  }

◆ Olive()

static constexpr Color impeller::Color::Olive ( )

inlinestaticconstexpr

Definition at line 674 of file color.h.

                                 {
    return {128.0f / 255.0f, 128.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ OliveDrab()

static constexpr Color impeller::Color::OliveDrab ( )

inlinestaticconstexpr

Definition at line 678 of file color.h.

                                     {
    return {107.0f / 255.0f, 142.0f / 255.0f, 35.0f / 255.0f, 1.0f};
  }

◆ operator*() [1/2]

constexpr Color impeller::Color::operator* ( const Color & c ) const

inlineconstexpr

Definition at line 194 of file color.h.

                                                         {
    return {red * c.red, green * c.green, blue * c.blue, alpha * c.alpha};
  }

◆ operator*() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator* ( T value ) const

inlineconstexpr

Definition at line 199 of file color.h.

                                                  {
    auto v = static_cast<Scalar>(value);
    return {red * v, green * v, blue * v, alpha * v};
  }

◆ operator+() [1/2]

constexpr Color impeller::Color::operator+ ( const Color & c ) const

inlineconstexpr

Definition at line 174 of file color.h.

                                                         {
    return {red + c.red, green + c.green, blue + c.blue, alpha + c.alpha};
  }

◆ operator+() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator+ ( T value ) const

inlineconstexpr

Definition at line 179 of file color.h.

                                                  {
    auto v = static_cast<Scalar>(value);
    return {red + v, green + v, blue + v, alpha + v};
  }

◆ operator-() [1/2]

constexpr Color impeller::Color::operator- ( const Color & c ) const

inlineconstexpr

Definition at line 184 of file color.h.

                                                         {
    return {red - c.red, green - c.green, blue - c.blue, alpha - c.alpha};
  }

◆ operator-() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator- ( T value ) const

inlineconstexpr

Definition at line 189 of file color.h.

                                                  {
    auto v = static_cast<Scalar>(value);
    return {red - v, green - v, blue - v, alpha - v};
  }

◆ operator/() [1/2]

constexpr Color impeller::Color::operator/ ( const Color & c ) const

inlineconstexpr

Definition at line 204 of file color.h.

                                                         {
    return {red * c.red, green * c.green, blue * c.blue, alpha * c.alpha};
  }

◆ operator/() [2/2]

template<class T , class = std::enable_if_t<std::is_arithmetic_v<T>>>

constexpr Color impeller::Color::operator/ ( T value ) const

inlineconstexpr

Definition at line 209 of file color.h.

                                                  {
    auto v = static_cast<Scalar>(value);
    return {red / v, green / v, blue / v, alpha / v};
  }

◆ operator==()

constexpr bool impeller::Color::operator== ( const Color & c ) const

inlineconstexpr

Definition at line 169 of file color.h.

                                                         {
    return ScalarNearlyEqual(red, c.red) && ScalarNearlyEqual(green, c.green) &&
           ScalarNearlyEqual(blue, c.blue) && ScalarNearlyEqual(alpha, c.alpha);
  }

◆ Orange()

static constexpr Color impeller::Color::Orange ( )

inlinestaticconstexpr

Definition at line 682 of file color.h.

                                  {
    return {255.0f / 255.0f, 165.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ OrangeRed()

static constexpr Color impeller::Color::OrangeRed ( )

inlinestaticconstexpr

Definition at line 686 of file color.h.

                                     {
    return {255.0f / 255.0f, 69.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ Orchid()

static constexpr Color impeller::Color::Orchid ( )

inlinestaticconstexpr

Definition at line 690 of file color.h.

                                  {
    return {218.0f / 255.0f, 112.0f / 255.0f, 214.0f / 255.0f, 1.0f};
  }

◆ PaleGoldenrod()

static constexpr Color impeller::Color::PaleGoldenrod ( )

inlinestaticconstexpr

Definition at line 694 of file color.h.

                                         {
    return {238.0f / 255.0f, 232.0f / 255.0f, 170.0f / 255.0f, 1.0f};
  }

◆ PaleGreen()

static constexpr Color impeller::Color::PaleGreen ( )

inlinestaticconstexpr

Definition at line 698 of file color.h.

                                     {
    return {152.0f / 255.0f, 251.0f / 255.0f, 152.0f / 255.0f, 1.0f};
  }

◆ PaleTurquoise()

static constexpr Color impeller::Color::PaleTurquoise ( )

inlinestaticconstexpr

Definition at line 702 of file color.h.

                                         {
    return {175.0f / 255.0f, 238.0f / 255.0f, 238.0f / 255.0f, 1.0f};
  }

◆ PaleVioletRed()

static constexpr Color impeller::Color::PaleVioletRed ( )

inlinestaticconstexpr

Definition at line 706 of file color.h.

                                         {
    return {219.0f / 255.0f, 112.0f / 255.0f, 147.0f / 255.0f, 1.0f};
  }

◆ PapayaWhip()

static constexpr Color impeller::Color::PapayaWhip ( )

inlinestaticconstexpr

Definition at line 710 of file color.h.

                                      {
    return {255.0f / 255.0f, 239.0f / 255.0f, 213.0f / 255.0f, 1.0f};
  }

◆ Peachpuff()

static constexpr Color impeller::Color::Peachpuff ( )

inlinestaticconstexpr

Definition at line 714 of file color.h.

                                     {
    return {255.0f / 255.0f, 218.0f / 255.0f, 185.0f / 255.0f, 1.0f};
  }

◆ Peru()

static constexpr Color impeller::Color::Peru ( )

inlinestaticconstexpr

Definition at line 718 of file color.h.

                                {
    return {205.0f / 255.0f, 133.0f / 255.0f, 63.0f / 255.0f, 1.0f};
  }

◆ Pink()

static constexpr Color impeller::Color::Pink ( )

inlinestaticconstexpr

Definition at line 722 of file color.h.

                                {
    return {255.0f / 255.0f, 192.0f / 255.0f, 203.0f / 255.0f, 1.0f};
  }

◆ Plum()

static constexpr Color impeller::Color::Plum ( )

inlinestaticconstexpr

Definition at line 726 of file color.h.

                                {
    return {221.0f / 255.0f, 160.0f / 255.0f, 221.0f / 255.0f, 1.0f};
  }

◆ PowderBlue()

static constexpr Color impeller::Color::PowderBlue ( )

inlinestaticconstexpr

Definition at line 730 of file color.h.

                                      {
    return {176.0f / 255.0f, 224.0f / 255.0f, 230.0f / 255.0f, 1.0f};
  }

◆ Premultiply()

constexpr Color impeller::Color::Premultiply ( ) const

inlineconstexpr

Definition at line 214 of file color.h.

                                      {
    return {red * alpha, green * alpha, blue * alpha, alpha};
  }

◆ Purple()

static constexpr Color impeller::Color::Purple ( )

inlinestaticconstexpr

Definition at line 734 of file color.h.

                                  {
    return {128.0f / 255.0f, 0.0f / 255.0f, 128.0f / 255.0f, 1.0f};
  }

◆ Random()

static Color impeller::Color::Random ( )

inlinestatic

Definition at line 842 of file color.h.

                        {
    return {
        // This method is not used for cryptographic purposes.
        // NOLINTBEGIN(clang-analyzer-security.insecureAPI.rand)
        static_cast<Scalar>((std::rand() % 255) / 255.0f),  //
        static_cast<Scalar>((std::rand() % 255) / 255.0f),  //
        static_cast<Scalar>((std::rand() % 255) / 255.0f),  //
        // NOLINTEND(clang-analyzer-security.insecureAPI.rand)
        1.0f  //
 
    };
  }

◆ Red()

static constexpr Color impeller::Color::Red ( )

inlinestaticconstexpr

Definition at line 264 of file color.h.

264{ return {1.0f, 0.0f, 0.0f, 1.0f}; }

◆ RosyBrown()

static constexpr Color impeller::Color::RosyBrown ( )

inlinestaticconstexpr

Definition at line 738 of file color.h.

                                     {
    return {188.0f / 255.0f, 143.0f / 255.0f, 143.0f / 255.0f, 1.0f};
  }

◆ RoyalBlue()

static constexpr Color impeller::Color::RoyalBlue ( )

inlinestaticconstexpr

Definition at line 742 of file color.h.

                                     {
    return {65.0f / 255.0f, 105.0f / 255.0f, 225.0f / 255.0f, 1.0f};
  }

◆ SaddleBrown()

static constexpr Color impeller::Color::SaddleBrown ( )

inlinestaticconstexpr

Definition at line 746 of file color.h.

                                       {
    return {139.0f / 255.0f, 69.0f / 255.0f, 19.0f / 255.0f, 1.0f};
  }

◆ Salmon()

static constexpr Color impeller::Color::Salmon ( )

inlinestaticconstexpr

Definition at line 750 of file color.h.

                                  {
    return {250.0f / 255.0f, 128.0f / 255.0f, 114.0f / 255.0f, 1.0f};
  }

◆ SandyBrown()

static constexpr Color impeller::Color::SandyBrown ( )

inlinestaticconstexpr

Definition at line 754 of file color.h.

                                      {
    return {244.0f / 255.0f, 164.0f / 255.0f, 96.0f / 255.0f, 1.0f};
  }

◆ Seagreen()

static constexpr Color impeller::Color::Seagreen ( )

inlinestaticconstexpr

Definition at line 758 of file color.h.

                                    {
    return {46.0f / 255.0f, 139.0f / 255.0f, 87.0f / 255.0f, 1.0f};
  }

◆ Seashell()

static constexpr Color impeller::Color::Seashell ( )

inlinestaticconstexpr

Definition at line 762 of file color.h.

                                    {
    return {255.0f / 255.0f, 245.0f / 255.0f, 238.0f / 255.0f, 1.0f};
  }

◆ Sienna()

static constexpr Color impeller::Color::Sienna ( )

inlinestaticconstexpr

Definition at line 766 of file color.h.

                                  {
    return {160.0f / 255.0f, 82.0f / 255.0f, 45.0f / 255.0f, 1.0f};
  }

◆ Silver()

static constexpr Color impeller::Color::Silver ( )

inlinestaticconstexpr

Definition at line 770 of file color.h.

                                  {
    return {192.0f / 255.0f, 192.0f / 255.0f, 192.0f / 255.0f, 1.0f};
  }

◆ SkyBlue()

static constexpr Color impeller::Color::SkyBlue ( )

inlinestaticconstexpr

Definition at line 774 of file color.h.

                                   {
    return {135.0f / 255.0f, 206.0f / 255.0f, 235.0f / 255.0f, 1.0f};
  }

◆ SlateBlue()

static constexpr Color impeller::Color::SlateBlue ( )

inlinestaticconstexpr

Definition at line 778 of file color.h.

                                     {
    return {106.0f / 255.0f, 90.0f / 255.0f, 205.0f / 255.0f, 1.0f};
  }

◆ SlateGray()

static constexpr Color impeller::Color::SlateGray ( )

inlinestaticconstexpr

Definition at line 782 of file color.h.

                                     {
    return {112.0f / 255.0f, 128.0f / 255.0f, 144.0f / 255.0f, 1.0f};
  }

◆ SlateGrey()

static constexpr Color impeller::Color::SlateGrey ( )

inlinestaticconstexpr

Definition at line 786 of file color.h.

                                     {
    return {112.0f / 255.0f, 128.0f / 255.0f, 144.0f / 255.0f, 1.0f};
  }

◆ Snow()

static constexpr Color impeller::Color::Snow ( )

inlinestaticconstexpr

Definition at line 790 of file color.h.

                                {
    return {255.0f / 255.0f, 250.0f / 255.0f, 250.0f / 255.0f, 1.0f};
  }

◆ SpringGreen()

static constexpr Color impeller::Color::SpringGreen ( )

inlinestaticconstexpr

Definition at line 794 of file color.h.

                                       {
    return {0.0f / 255.0f, 255.0f / 255.0f, 127.0f / 255.0f, 1.0f};
  }

◆ SRGBToLinear()

Color impeller::Color::SRGBToLinear ( ) const

Convert the color from sRGB space to linear space.

   The color is assumed to be unpremultiplied. If the color is
   premultipled, the conversion output will be incorrect.

Definition at line 399 of file color.cc.

                                {
  static auto conversion = [](Scalar component) {
    if (component <= 0.04045) {
      return component / 12.92;
    }
    return pow((component + 0.055) / 1.055, 2.4);
  };
 
  return Color(conversion(red), conversion(green), conversion(blue), alpha);
}

◆ SteelBlue()

static constexpr Color impeller::Color::SteelBlue ( )

inlinestaticconstexpr

Definition at line 798 of file color.h.

                                     {
    return {70.0f / 255.0f, 130.0f / 255.0f, 180.0f / 255.0f, 1.0f};
  }

◆ Tan()

static constexpr Color impeller::Color::Tan ( )

inlinestaticconstexpr

Definition at line 802 of file color.h.

                               {
    return {210.0f / 255.0f, 180.0f / 255.0f, 140.0f / 255.0f, 1.0f};
  }

◆ Teal()

static constexpr Color impeller::Color::Teal ( )

inlinestaticconstexpr

Definition at line 806 of file color.h.

                                {
    return {0.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1.0f};
  }

◆ Thistle()

static constexpr Color impeller::Color::Thistle ( )

inlinestaticconstexpr

Definition at line 810 of file color.h.

                                   {
    return {216.0f / 255.0f, 191.0f / 255.0f, 216.0f / 255.0f, 1.0f};
  }

◆ ToIColor()

static constexpr uint32_t impeller::Color::ToIColor ( Color color )

inlinestaticconstexpr

Convert this color to a 32-bit representation.

Definition at line 161 of file color.h.

                                                  {
    return (((std::lround(color.alpha * 255.0f) & 0xff) << 24) |
            ((std::lround(color.red * 255.0f) & 0xff) << 16) |
            ((std::lround(color.green * 255.0f) & 0xff) << 8) |
            ((std::lround(color.blue * 255.0f) & 0xff) << 0)) &
           0xFFFFFFFF;
  }

◆ Tomato()

static constexpr Color impeller::Color::Tomato ( )

inlinestaticconstexpr

Definition at line 814 of file color.h.

                                  {
    return {255.0f / 255.0f, 99.0f / 255.0f, 71.0f / 255.0f, 1.0f};
  }

◆ ToR8G8B8A8()

constexpr std::array< uint8_t, 4 > impeller::Color::ToR8G8B8A8 ( ) const

inlineconstexpr

Convert to R8G8B8A8 representation.

Returns: constexpr std::array<u_int8, 4>

Definition at line 248 of file color.h.

                                                    {
    uint8_t r = std::round(red * 255.0f);
    uint8_t g = std::round(green * 255.0f);
    uint8_t b = std::round(blue * 255.0f);
    uint8_t a = std::round(alpha * 255.0f);
    return {r, g, b, a};
  }

◆ Turquoise()

static constexpr Color impeller::Color::Turquoise ( )

inlinestaticconstexpr

Definition at line 818 of file color.h.

                                     {
    return {64.0f / 255.0f, 224.0f / 255.0f, 208.0f / 255.0f, 1.0f};
  }

◆ Unpremultiply()

constexpr Color impeller::Color::Unpremultiply ( ) const

inlineconstexpr

Definition at line 218 of file color.h.

                                        {
    if (ScalarNearlyEqual(alpha, 0.0f)) {
      return Color::BlackTransparent();
    }
    return {red / alpha, green / alpha, blue / alpha, alpha};
  }

◆ Violet()

static constexpr Color impeller::Color::Violet ( )

inlinestaticconstexpr

Definition at line 822 of file color.h.

                                  {
    return {238.0f / 255.0f, 130.0f / 255.0f, 238.0f / 255.0f, 1.0f};
  }

◆ Wheat()

static constexpr Color impeller::Color::Wheat ( )

inlinestaticconstexpr

Definition at line 826 of file color.h.

                                 {
    return {245.0f / 255.0f, 222.0f / 255.0f, 179.0f / 255.0f, 1.0f};
  }

◆ White()

static constexpr Color impeller::Color::White ( )

inlinestaticconstexpr

Definition at line 256 of file color.h.

256{ return {1.0f, 1.0f, 1.0f, 1.0f}; }

◆ Whitesmoke()

static constexpr Color impeller::Color::Whitesmoke ( )

inlinestaticconstexpr

Definition at line 830 of file color.h.

                                      {
    return {245.0f / 255.0f, 245.0f / 255.0f, 245.0f / 255.0f, 1.0f};
  }

◆ WhiteTransparent()

static constexpr Color impeller::Color::WhiteTransparent ( )

inlinestaticconstexpr

Definition at line 260 of file color.h.

260{ return {1.0f, 1.0f, 1.0f, 0.0f}; }

◆ WithAlpha()

constexpr Color impeller::Color::WithAlpha ( Scalar new_alpha ) const

inlineconstexpr

Definition at line 270 of file color.h.

                                                    {
    return {red, green, blue, new_alpha};
  }

◆ Yellow()

static constexpr Color impeller::Color::Yellow ( )

inlinestaticconstexpr

Definition at line 834 of file color.h.

                                  {
    return {255.0f / 255.0f, 255.0f / 255.0f, 0.0f / 255.0f, 1.0f};
  }

◆ YellowGreen()

static constexpr Color impeller::Color::YellowGreen ( )

inlinestaticconstexpr

Definition at line 838 of file color.h.

                                       {
    return {154.0f / 255.0f, 205.0f / 255.0f, 50.0f / 255.0f, 1.0f};
  }

Member Data Documentation

◆ alpha

Scalar impeller::Color::alpha = 0.0

The alpha component of the color (0 to 1)

Definition at line 143 of file color.h.

◆ blue

Scalar impeller::Color::blue = 0.0

The blue color component (0 to 1)

Definition at line 138 of file color.h.

◆ green

Scalar impeller::Color::green = 0.0

The green color component (0 to 1)

Definition at line 133 of file color.h.

◆ red

Scalar impeller::Color::red = 0.0

The red color component (0 to 1)

Definition at line 128 of file color.h.

The documentation for this struct was generated from the following files:

impeller/geometry/color.h
impeller/geometry/color.cc

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Color() [1/4]

◆ Color() [2/4]

◆ Color() [3/4]

◆ Color() [4/4]

Member Function Documentation

◆ AliceBlue()

◆ AntiqueWhite()

◆ ApplyColorMatrix()

◆ Aqua()

◆ AquaMarine()

◆ Azure()

◆ Beige()

◆ Bisque()

◆ Black()

◆ BlackTransparent()

◆ BlanchedAlmond()

◆ Blend()

◆ Blue()

◆ BlueViolet()

◆ Brown()

◆ BurlyWood()

◆ CadetBlue()

◆ Chartreuse()

◆ Chocolate()

◆ Clamp01()

◆ Coral()

◆ CornflowerBlue()

◆ Cornsilk()

◆ Crimson()

◆ Cyan()

◆ DarkBlue()

◆ DarkCyan()

◆ DarkGoldenrod()

◆ DarkGray()

◆ DarkGreen()

◆ DarkGrey()

◆ DarkKhaki()

◆ DarkMagenta()

◆ DarkOliveGreen()

◆ DarkOrange()

◆ DarkOrchid()

◆ DarkRed()

◆ DarkSalmon()

◆ DarkSeagreen()

◆ DarkSlateBlue()

◆ DarkSlateGray()

◆ DarkSlateGrey()

◆ DarkTurquoise()

◆ DarkViolet()

◆ DeepPink()

◆ DeepSkyBlue()

◆ DimGray()

◆ DimGrey()

◆ DodgerBlue()

◆ Firebrick()

◆ FloralWhite()

◆ ForestGreen()

◆ Fuchsia()

◆ Gainsboro()

◆ Ghostwhite()

◆ Gold()

◆ Goldenrod()

◆ Gray()

◆ Green()

◆ GreenYellow()

◆ Grey()

◆ Honeydew()

◆ HotPink()

◆ IndianRed()

◆ Indigo()

◆ IsOpaque()

◆ IsTransparent()

◆ Ivory()

◆ Khaki()

◆ Lavender()