fl::gfx Namespace Reference

Namespaces
namespace	blur_detail
namespace	detail
	============================================================================

Classes
struct	Canvas
	Simple rectangular canvas for graphics operations Combines a pixel buffer with dimensions for cache-optimal drawing. More...
struct	CanvasMapped
	XYMap-backed canvas for non-rectangular or remapped layouts. More...

Enumerations
enum class	LineCap { FLAT , ROUND , SQUARE }
	Line cap styles for stroke operations. More...

Functions
template<typename Coord>
Coord	aaRatio (Coord num, Coord denom, Coord inv_denom)
	Compute num/denom using the best strategy for the Coord type:
template<typename PixelT, bool Overwrite>
void	addPixelToBuffer (PixelT *pixels, int width, int height, int x, int y, const PixelT &color)
	Internal helper: add or set pixel to rectangular buffer with bounds checking Direct row-major indexing: pixels[y * width + x] Templated on Overwrite for compile-time dispatch (no per-pixel branch).
void	blur1d (CRGB *leds, u16 numLeds, fract8 blur_amount) FL_NOEXCEPT
	Legacy raw-pointer version of blur1d.
void	blur1d (fl::span< CRGB > leds, fract8 blur_amount) FL_NOEXCEPT
	One-dimensional blur filter (span version).
void	blur2d (Canvas< CRGB > &canvas, alpha8 blur_amount) FL_NOEXCEPT
	Two-dimensional blur filter (Canvas version, no XYMap).
void	blur2d (CRGB *leds, u8 width, u8 height, fract8 blur_amount) FL_NOEXCEPT FASTLED_DEPRECATED("Use blur2d(...
	Legacy version of blur2d, which does not require an XYMap but instead implicitly binds to XY() function.
void	blur2d (CRGB *leds, u8 width, u8 height, fract8 blur_amount, const XYMap &xymap) FL_NOEXCEPT
	Legacy raw-pointer version of blur2d.
void	blur2d (fl::span< CRGB > leds, u8 width, u8 height, fract8 blur_amount, const XYMap &xymap) FL_NOEXCEPT
	Two-dimensional blur filter (span version).
	BLUR_INST_F16 (0, 0, CRGB) BLUR_INST_F16(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F16 (0, 1, CRGB16) BLUR_INST_F16(0
CRGB CRGB CRGB CRGB CRGB	BLUR_INST_F16 (0, 2, CRGB) BLUR_INST_F16(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F16 (0, 3, CRGB16) BLUR_INST_F16(0
CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_INST_F16 (0, 4, CRGB) BLUR_INST_F16(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16	BLUR_INST_F16 (1, 0, CRGB16) BLUR_INST_F16(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16	BLUR_INST_F16 (1, 1, CRGB16) BLUR_INST_F16(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F16 (1, 2, CRGB16) BLUR_INST_F16(2
CRGB CRGB CRGB	BLUR_INST_F16 (2, 0, CRGB) BLUR_INST_F16(3
CRGB CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_INST_F16 (2, 1, CRGB) BLUR_INST_F16(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F16 (3, 0, CRGB16) BLUR_INST_F16(4
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16	BLUR_INST_F16 (3, 3, CRGB16) BLUR_INST_F16(4
CRGB CRGB CRGB CRGB	BLUR_INST_F16 (4, 0, CRGB) BLUR_INST_F16(0
CRGB CRGB	BLUR_INST_F16 (4, 4, CRGB) BLUR_INST_F16(1
	BLUR_INST_F8 (0, 0, CRGB) BLUR_INST_F8(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F8 (0, 1, CRGB16) BLUR_INST_F8(0
CRGB CRGB CRGB CRGB CRGB	BLUR_INST_F8 (0, 2, CRGB) BLUR_INST_F8(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F8 (0, 3, CRGB16) BLUR_INST_F8(0
CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_INST_F8 (0, 4, CRGB) BLUR_INST_F8(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16	BLUR_INST_F8 (1, 0, CRGB16) BLUR_INST_F8(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16	BLUR_INST_F8 (1, 1, CRGB16) BLUR_INST_F8(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F8 (1, 2, CRGB16) BLUR_INST_F8(2
CRGB CRGB CRGB	BLUR_INST_F8 (2, 0, CRGB) BLUR_INST_F8(3
CRGB CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_INST_F8 (2, 1, CRGB) BLUR_INST_F8(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16	BLUR_INST_F8 (3, 0, CRGB16) BLUR_INST_F8(4
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16	BLUR_INST_F8 (3, 3, CRGB16) BLUR_INST_F8(4
CRGB CRGB CRGB CRGB	BLUR_INST_F8 (4, 0, CRGB) BLUR_INST_F8(0
CRGB CRGB	BLUR_INST_F8 (4, 4, CRGB) BLUR_INST_F8(1
	BLUR_MAPPED_INST_F16 (0, 0, CRGB) BLUR_MAPPED_INST_F16(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F16 (0, 1, CRGB16) BLUR_MAPPED_INST_F16(0
CRGB CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F16 (0, 2, CRGB) BLUR_MAPPED_INST_F16(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F16 (0, 3, CRGB16) BLUR_MAPPED_INST_F16(0
CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F16 (0, 4, CRGB) BLUR_MAPPED_INST_F16(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F16 (1, 0, CRGB16) BLUR_MAPPED_INST_F16(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16	BLUR_MAPPED_INST_F16 (1, 1, CRGB16) BLUR_MAPPED_INST_F16(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F16 (1, 2, CRGB16) BLUR_MAPPED_INST_F16(2
CRGB CRGB CRGB	BLUR_MAPPED_INST_F16 (2, 0, CRGB) BLUR_MAPPED_INST_F16(3
CRGB CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F16 (2, 1, CRGB) BLUR_MAPPED_INST_F16(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F16 (3, 0, CRGB16) BLUR_MAPPED_INST_F16(4
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16	BLUR_MAPPED_INST_F16 (3, 3, CRGB16) BLUR_MAPPED_INST_F16(4
CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F16 (4, 0, CRGB) BLUR_MAPPED_INST_F16(0
CRGB CRGB	BLUR_MAPPED_INST_F16 (4, 4, CRGB) BLUR_MAPPED_INST_F16(1
	BLUR_MAPPED_INST_F8 (0, 0, CRGB) BLUR_MAPPED_INST_F8(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F8 (0, 1, CRGB16) BLUR_MAPPED_INST_F8(0
CRGB CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F8 (0, 2, CRGB) BLUR_MAPPED_INST_F8(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F8 (0, 3, CRGB16) BLUR_MAPPED_INST_F8(0
CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F8 (0, 4, CRGB) BLUR_MAPPED_INST_F8(1
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F8 (1, 0, CRGB16) BLUR_MAPPED_INST_F8(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16	BLUR_MAPPED_INST_F8 (1, 1, CRGB16) BLUR_MAPPED_INST_F8(2
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F8 (1, 2, CRGB16) BLUR_MAPPED_INST_F8(2
CRGB CRGB CRGB	BLUR_MAPPED_INST_F8 (2, 0, CRGB) BLUR_MAPPED_INST_F8(3
CRGB CRGB CRGB CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F8 (2, 1, CRGB) BLUR_MAPPED_INST_F8(0
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16 CRGB16 CRGB16	BLUR_MAPPED_INST_F8 (3, 0, CRGB16) BLUR_MAPPED_INST_F8(4
CRGB CRGB CRGB CRGB CRGB CRGB CRGB CRGB16 CRGB16	BLUR_MAPPED_INST_F8 (3, 3, CRGB16) BLUR_MAPPED_INST_F8(4
CRGB CRGB CRGB CRGB	BLUR_MAPPED_INST_F8 (4, 0, CRGB) BLUR_MAPPED_INST_F8(0
CRGB CRGB	BLUR_MAPPED_INST_F8 (4, 4, CRGB) BLUR_MAPPED_INST_F8(1
void	blurColumns (Canvas< CRGB > &canvas, alpha8 blur_amount) FL_NOEXCEPT
	Perform a blur1d() on every column of a rectangular matrix (Canvas version).
void	blurColumns (CRGB *leds, u8 width, u8 height, fract8 blur_amount, const XYMap &xymap) FL_NOEXCEPT
	Legacy raw-pointer version of blurColumns.
void	blurColumns (fl::span< CRGB > leds, u8 width, u8 height, fract8 blur_amount, const XYMap &xymap) FL_NOEXCEPT
	Perform a blur1d() on every column of a rectangular matrix (span version).
template<int hRadius, int vRadius, typename RGB_T>
void	blurGaussian (Canvas< RGB_T > &canvas) FL_NOEXCEPT
	Convenience overload with no dimming.
template<int hRadius, int vRadius, typename RGB_T>
void	blurGaussian (Canvas< RGB_T > &canvas, alpha16 dimFactor) FL_NOEXCEPT
	Higher-precision dim overload (UNORM16).
template<int hRadius, int vRadius, typename RGB_T>
void	blurGaussian (Canvas< RGB_T > &canvas, alpha8 dimFactor) FL_NOEXCEPT
	Compile-time Gaussian blur with independent H/V radii.
template<int hRadius, int vRadius, typename RGB_T>
void	blurGaussian (CanvasMapped< RGB_T > &canvas) FL_NOEXCEPT
template<int hRadius, int vRadius, typename RGB_T>
void	blurGaussian (CanvasMapped< RGB_T > &canvas, alpha16 dimFactor) FL_NOEXCEPT
	Higher-precision dim overload for CanvasMapped (UNORM16).
template<int hRadius, int vRadius, typename RGB_T>
void	blurGaussian (CanvasMapped< RGB_T > &canvas, alpha8 dimFactor) FL_NOEXCEPT
	XYMap-backed Gaussian blur (non-optimized, per-pixel path).
template<int hRadius, int vRadius, typename RGB_T, typename AlphaT>
FL_OPTIMIZE_FUNCTION void	blurGaussianImpl (Canvas< RGB_T > &canvas, AlphaT alpha)
template<int hRadius, int vRadius, typename RGB_T, typename AlphaT>
FL_OPTIMIZE_FUNCTION void	blurGaussianMappedImpl (CanvasMapped< RGB_T > &canvas, AlphaT alpha)
void	blurRows (Canvas< CRGB > &canvas, alpha8 blur_amount) FL_NOEXCEPT
	Perform a blur1d() on every row of a rectangular matrix (Canvas version).
void	blurRows (CRGB *leds, u8 width, u8 height, fract8 blur_amount, const XYMap &xymap) FL_NOEXCEPT
	Legacy raw-pointer version of blurRows.
void	blurRows (fl::span< CRGB > leds, u8 width, u8 height, fract8 blur_amount, const XYMap &xymap) FL_NOEXCEPT
	Perform a blur1d() on every row of a rectangular matrix (span version).
template<typename T>
fl::u8	coordToU8 (T alpha)
	sqrt is provided by fl::sqrt overloads in math.h for:
template<>
fl::u8	coordToU8< double > (double alpha)
template<>
fl::u8	coordToU8< fl::s16x16 > (fl::s16x16 alpha)
template<>
fl::u8	coordToU8< float > (float alpha)
template<>
fl::u8	coordToU8< int > (int alpha)
template<typename PixelT, typename Coord>
void	drawDisc (Canvas< PixelT > &canvas, const PixelT &color, Coord cx, Coord cy, Coord r, fl::DrawMode mode=fl::DrawMode::DRAW_MODE_BLEND) FL_NOEXCEPT
template<typename PixelT, typename Coord>
void	drawLine (Canvas< PixelT > &canvas, const PixelT &color, Coord x0, Coord y0, Coord x1, Coord y1, fl::DrawMode mode)
	============================================================================
template<typename PixelT, typename Coord>
void	drawRing (Canvas< PixelT > &canvas, const PixelT &color, Coord cx, Coord cy, Coord r, Coord thickness, fl::DrawMode mode=fl::DrawMode::DRAW_MODE_BLEND) FL_NOEXCEPT
template<typename PixelT, typename Coord>
void	drawStrokeLine (Canvas< PixelT > &canvas, const PixelT &color, Coord x0, Coord y0, Coord x1, Coord y1, Coord thickness, LineCap cap, fl::DrawMode mode=fl::DrawMode::DRAW_MODE_BLEND) FL_NOEXCEPT
template<typename T>
T	fromFrac (int p, int q)
	Convert rational p/q to Coord without float.
template<>
fl::s16x16	fromFrac< fl::s16x16 > (int p, int q)
template<typename T>
T	fromInt (int n)
	Convert an integer to Coord without float intermediate.
template<>
fl::s16x16	fromInt< fl::s16x16 > (int n)
template<typename T>
T	halfOf (T val)
	Divide Coord by 2 using shift (avoids expensive division on embedded).
template<>
double	halfOf< double > (double val)
template<>
fl::s16x16	halfOf< fl::s16x16 > (fl::s16x16 val)
template<>
float	halfOf< float > (float val)
template<>
int	halfOf< int > (int val)
template<typename T>
int	toInt (const T &val)
	Helper to convert any coordinate type to int Supports: s16x16 (via to_int()), float, int, and other arithmetic types.
template<>
int	toInt< double > (const double &val)
template<>
int	toInt< float > (const float &val)
template<>
int	toInt< int > (const int &val)

Variables
CRGB	BLUR_INST_F16 (2, 2, CRGB) BLUR_INST_F16(3
CRGB	BLUR_INST_F8 (2, 2, CRGB) BLUR_INST_F8(3
CRGB	BLUR_MAPPED_INST_F16 (2, 2, CRGB) BLUR_MAPPED_INST_F16(3
CRGB	BLUR_MAPPED_INST_F8 (2, 2, CRGB) BLUR_MAPPED_INST_F8(3
void const XYMap &xymap	instead