Inkscape: Inkscape::Filters Namespace Reference

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Classes
class	DistantLight

struct	DistantLightData

class	Filter

class	FilterBlend

class	FilterColorMatrix

class	FilterComponentTransfer

class	FilterComposite

class	FilterConvolveMatrix

class	FilterDiffuseLighting

class	FilterDisplacementMap

class	FilterFlood

class	FilterGaussian

class	FilterImage

class	FilterMerge

class	FilterMorphology

class	FilterOffset

class	FilterPrimitive

class	FilterSkeleton

class	FilterSlot

class	FilterSpecularLighting

class	FilterTile

class	FilterTurbulence

class	FilterUnits

class	PointLight

struct	PointLightData

class	SpotLight

struct	SpotLightData

Enumerations
enum	FilterColorMatrixType { COLORMATRIX_MATRIX , COLORMATRIX_SATURATE , COLORMATRIX_HUEROTATE , COLORMATRIX_LUMINANCETOALPHA , COLORMATRIX_ENDTYPE }

enum	FilterComponentTransferType { COMPONENTTRANSFER_TYPE_IDENTITY , COMPONENTTRANSFER_TYPE_TABLE , COMPONENTTRANSFER_TYPE_DISCRETE , COMPONENTTRANSFER_TYPE_LINEAR , COMPONENTTRANSFER_TYPE_GAMMA , COMPONENTTRANSFER_TYPE_ERROR }

enum	PreserveAlphaMode { PRESERVE_ALPHA , NO_PRESERVE_ALPHA }

enum	FilterConvolveMatrixEdgeMode { CONVOLVEMATRIX_EDGEMODE_DUPLICATE , CONVOLVEMATRIX_EDGEMODE_WRAP , CONVOLVEMATRIX_EDGEMODE_NONE , CONVOLVEMATRIX_EDGEMODE_ENDTYPE }

enum	MorphologyOp { ERODE , DILATE }

enum	FilterMorphologyOperator { MORPHOLOGY_OPERATOR_ERODE , MORPHOLOGY_OPERATOR_DILATE , MORPHOLOGY_OPERATOR_END }

enum	FilterTurbulenceType { TURBULENCE_FRACTALNOISE , TURBULENCE_TURBULENCE , TURBULENCE_ENDTYPE }

enum	FilterPrimitiveType { NR_FILTER_BLEND , NR_FILTER_COLORMATRIX , NR_FILTER_COMPONENTTRANSFER , NR_FILTER_COMPOSITE , NR_FILTER_CONVOLVEMATRIX , NR_FILTER_DIFFUSELIGHTING , NR_FILTER_DISPLACEMENTMAP , NR_FILTER_FLOOD , NR_FILTER_GAUSSIANBLUR , NR_FILTER_IMAGE , NR_FILTER_MERGE , NR_FILTER_MORPHOLOGY , NR_FILTER_OFFSET , NR_FILTER_SPECULARLIGHTING , NR_FILTER_TILE , NR_FILTER_TURBULENCE , NR_FILTER_ENDPRIMITIVETYPE }

enum	FilterSlotType { NR_FILTER_SLOT_NOT_SET = -1 , NR_FILTER_SOURCEGRAPHIC = -2 , NR_FILTER_SOURCEALPHA = -3 , NR_FILTER_BACKGROUNDIMAGE = -4 , NR_FILTER_BACKGROUNDALPHA = -5 , NR_FILTER_FILLPAINT = -6 , NR_FILTER_STROKEPAINT = -7 , NR_FILTER_UNNAMED_SLOT = -8 }

enum	FilterQuality { FILTER_QUALITY_BEST = 2 , FILTER_QUALITY_BETTER = 1 , FILTER_QUALITY_NORMAL = 0 , FILTER_QUALITY_WORSE = -1 , FILTER_QUALITY_WORST = -2 }

enum	LightType { NO_LIGHT = 0 , DISTANT_LIGHT , POINT_LIGHT , SPOT_LIGHT }

enum	LightComponent { LIGHT_RED = 0 , LIGHT_GREEN , LIGHT_BLUE }

Functions
static cairo_operator_t	get_cairo_op (SPBlendMode _blend_mode)

static int	_effect_area_scr (double const deviation)

static void	_make_kernel (FIRValue *const kernel, double const deviation)

static int	_effect_subsample_step_log2 (double const deviation, int const quality)

static void	calcFilter (double const sigma, double b[N])

static void	calcTriggsSdikaM (double const b[N], double M[N *N])

template<unsigned int SIZE>
static void	calcTriggsSdikaInitialization (double const M[N *N], IIRValue const uold[N][SIZE], IIRValue const uplus[SIZE], IIRValue const vplus[SIZE], IIRValue const alpha, IIRValue vold[N][SIZE])

template<typename PT , unsigned int PC, bool PREMULTIPLIED_ALPHA>
static void	filter2D_IIR (PT const dest, int const dstr1, int const dstr2, PT const const src, int const sstr1, int const sstr2, int const n1, int const n2, IIRValue const b[N+1], double const M[N N], IIRValue const tmpdata[], dispatch_pool &pool)

template<typename PT , unsigned int PC>
static void	filter2D_FIR (PT const dst, int const dstr1, int const dstr2, PT const const src, int const sstr1, int const sstr2, int const n1, int const n2, FIRValue const *const kernel, int const scr_len, dispatch_pool &pool)

static void	gaussian_pass_IIR (Geom::Dim2 d, double deviation, cairo_surface_t src, cairo_surface_t dest, IIRValue **tmpdata, dispatch_pool &pool)

static void	gaussian_pass_FIR (Geom::Dim2 d, double deviation, cairo_surface_t src, cairo_surface_t dest, dispatch_pool &pool)

int	clamp (int const val)
	Clamps an integer value to a value between 0 and 255.

int	clamp3 (int const val)
	Clamps an integer value to a value between 0 and 255^3.

int	clamp_alpha (int const val, int const alpha)
	Clamps an integer to a value between 0 and alpha.

Enumeration Type Documentation

◆ FilterColorMatrixType

enum Inkscape::Filters::FilterColorMatrixType

Enumerator
COLORMATRIX_MATRIX
COLORMATRIX_SATURATE
COLORMATRIX_HUEROTATE
COLORMATRIX_LUMINANCETOALPHA
COLORMATRIX_ENDTYPE

Definition at line 28 of file nr-filter-colormatrix.h.

◆ FilterComponentTransferType

enum Inkscape::Filters::FilterComponentTransferType

Enumerator
COMPONENTTRANSFER_TYPE_IDENTITY
COMPONENTTRANSFER_TYPE_TABLE
COMPONENTTRANSFER_TYPE_DISCRETE
COMPONENTTRANSFER_TYPE_LINEAR
COMPONENTTRANSFER_TYPE_GAMMA
COMPONENTTRANSFER_TYPE_ERROR

Definition at line 24 of file nr-filter-component-transfer.h.

◆ FilterConvolveMatrixEdgeMode

enum Inkscape::Filters::FilterConvolveMatrixEdgeMode

Enumerator
CONVOLVEMATRIX_EDGEMODE_DUPLICATE
CONVOLVEMATRIX_EDGEMODE_WRAP
CONVOLVEMATRIX_EDGEMODE_NONE
CONVOLVEMATRIX_EDGEMODE_ENDTYPE

Definition at line 24 of file nr-filter-convolve-matrix.h.

◆ FilterMorphologyOperator

enum Inkscape::Filters::FilterMorphologyOperator

Enumerator
MORPHOLOGY_OPERATOR_ERODE
MORPHOLOGY_OPERATOR_DILATE
MORPHOLOGY_OPERATOR_END

Definition at line 23 of file nr-filter-morphology.h.

◆ FilterPrimitiveType

enum Inkscape::Filters::FilterPrimitiveType

Enumerator
NR_FILTER_BLEND
NR_FILTER_COLORMATRIX
NR_FILTER_COMPONENTTRANSFER
NR_FILTER_COMPOSITE
NR_FILTER_CONVOLVEMATRIX
NR_FILTER_DIFFUSELIGHTING
NR_FILTER_DISPLACEMENTMAP
NR_FILTER_FLOOD
NR_FILTER_GAUSSIANBLUR
NR_FILTER_IMAGE
NR_FILTER_MERGE
NR_FILTER_MORPHOLOGY
NR_FILTER_OFFSET
NR_FILTER_SPECULARLIGHTING
NR_FILTER_TILE
NR_FILTER_TURBULENCE
NR_FILTER_ENDPRIMITIVETYPE

Definition at line 16 of file nr-filter-types.h.

◆ FilterQuality

enum Inkscape::Filters::FilterQuality

Enumerator
FILTER_QUALITY_BEST
FILTER_QUALITY_BETTER
FILTER_QUALITY_NORMAL
FILTER_QUALITY_WORSE
FILTER_QUALITY_WORST

Definition at line 51 of file nr-filter-types.h.

◆ FilterSlotType

enum Inkscape::Filters::FilterSlotType

Enumerator
NR_FILTER_SLOT_NOT_SET
NR_FILTER_SOURCEGRAPHIC
NR_FILTER_SOURCEALPHA
NR_FILTER_BACKGROUNDIMAGE
NR_FILTER_BACKGROUNDALPHA
NR_FILTER_FILLPAINT
NR_FILTER_STROKEPAINT
NR_FILTER_UNNAMED_SLOT

Definition at line 37 of file nr-filter-types.h.

◆ FilterTurbulenceType

enum Inkscape::Filters::FilterTurbulenceType

Enumerator
TURBULENCE_FRACTALNOISE
TURBULENCE_TURBULENCE
TURBULENCE_ENDTYPE

Definition at line 35 of file nr-filter-turbulence.h.

◆ LightComponent

enum Inkscape::Filters::LightComponent

Enumerator
LIGHT_RED
LIGHT_GREEN
LIGHT_BLUE

Definition at line 34 of file nr-light.h.

◆ LightType

enum Inkscape::Filters::LightType

Enumerator
NO_LIGHT
DISTANT_LIGHT
POINT_LIGHT
SPOT_LIGHT

Definition at line 16 of file nr-light-types.h.

◆ MorphologyOp

enum Inkscape::Filters::MorphologyOp

Enumerator
ERODE
DILATE

Definition at line 30 of file nr-filter-morphology.cpp.

◆ PreserveAlphaMode

enum Inkscape::Filters::PreserveAlphaMode

Enumerator
PRESERVE_ALPHA
NO_PRESERVE_ALPHA

Definition at line 29 of file nr-filter-convolve-matrix.cpp.

Function Documentation

◆ _effect_area_scr()

static int Inkscape::Filters::_effect_area_scr ( double const deviation )

static

Definition at line 126 of file nr-filter-gaussian.cpp.

Referenced by _make_kernel(), Inkscape::Filters::FilterGaussian::area_enlarge(), Inkscape::Filters::FilterGaussian::complexity(), gaussian_pass_FIR(), and Inkscape::Filters::FilterGaussian::render_cairo().

◆ _effect_subsample_step_log2()

static int Inkscape::Filters::_effect_subsample_step_log2	(	double const	deviation,
		int const	quality
	)

static

Definition at line 168 of file nr-filter-gaussian.cpp.

References BLUR_QUALITY_BEST, BLUR_QUALITY_BETTER, BLUR_QUALITY_NORMAL, BLUR_QUALITY_WORSE, BLUR_QUALITY_WORST, clip(), and log().

Referenced by Inkscape::Filters::FilterGaussian::render_cairo().

◆ _make_kernel()

static void Inkscape::Filters::_make_kernel	(	FIRValue *const	kernel,
		double const	deviation
	)

static

Definition at line 132 of file nr-filter-gaussian.cpp.

References _effect_area_scr(), sqr(), and sum().

Referenced by gaussian_pass_FIR().

◆ calcFilter()

static void Inkscape::Filters::calcFilter	(	double const	sigma,
		double	b[N]
	)

static

Definition at line 210 of file nr-filter-gaussian.cpp.

References N, real, and sqr().

Referenced by gaussian_pass_IIR().

◆ calcTriggsSdikaInitialization()

template<unsigned int SIZE>

static void Inkscape::Filters::calcTriggsSdikaInitialization	(	double const	M[N *N],
		IIRValue const	uold[N][SIZE],
		IIRValue const	uplus[SIZE],
		IIRValue const	vplus[SIZE],
		IIRValue const	alpha,
		IIRValue	vold[N][SIZE]
	)

static

Definition at line 259 of file nr-filter-gaussian.cpp.

References c, N, and SIZE.

◆ calcTriggsSdikaM()

static void Inkscape::Filters::calcTriggsSdikaM	(	double const	b[N],
		double	M[N *N]
	)

static

Definition at line 242 of file nr-filter-gaussian.cpp.

References N, and sqr().

Referenced by gaussian_pass_IIR().

◆ clamp()

int Inkscape::Filters::clamp ( int const val )

inline

Clamps an integer value to a value between 0 and 255.

Needed by filters where rendering computations can lead to component values out of bound.

Returns: 0 if the value is smaller than 0, 255 if it is greater 255, else v

Parameters

v	the value to clamp

Definition at line 28 of file nr-filter-utils.h.

Referenced by Inkscape::Extension::Internal::svgConvertRGBToText().

◆ clamp3()

int Inkscape::Filters::clamp3 ( int const val )

inline

Clamps an integer value to a value between 0 and 255^3.

Returns: 0 if the value is smaller than 0, 255^3 (16581375) if it is greater than 255^3, else v

Parameters

v	the value to clamp

Definition at line 40 of file nr-filter-utils.h.

◆ clamp_alpha()

int Inkscape::Filters::clamp_alpha	(	int const	val,
		int const	alpha
	)

inline

Clamps an integer to a value between 0 and alpha.

Useful when handling images with premultiplied alpha, as setting some of RGB channels to a value bigger than alpha confuses the alpha blending in Inkscape

Returns: 0 if val is negative, alpha if val is bigger than alpha, val otherwise

Parameters

val	the value to clamp
alpha	the maximum value to clamp to

Definition at line 59 of file nr-filter-utils.h.

◆ filter2D_FIR()

template<typename PT , unsigned int PC>

static void Inkscape::Filters::filter2D_FIR	(	PT *const	dst,
		int const	dstr1,
		int const	dstr2,
		PT const *const	src,
		int const	sstr1,
		int const	sstr2,
		int const	n1,
		int const	n2,
		FIRValue const *const	kernel,
		int const	scr_len,
		dispatch_pool &	pool
	)

static

Definition at line 349 of file nr-filter-gaussian.cpp.

References copy_n(), Inkscape::dispatch_pool::dispatch(), n1, n2, and sum().

◆ filter2D_IIR()

template<typename PT , unsigned int PC, bool PREMULTIPLIED_ALPHA>

static void Inkscape::Filters::filter2D_IIR	(	PT *const	dest,
		int const	dstr1,
		int const	dstr2,
		PT const *const	src,
		int const	sstr1,
		int const	sstr2,
		int const	n1,
		int const	n2,
		IIRValue const	b[N+1],
		double const	M[N *N],
		IIRValue *const	tmpdata[],
		dispatch_pool &	pool
	)

static

Definition at line 280 of file nr-filter-gaussian.cpp.

References c, copy_n(), Inkscape::dispatch_pool::dispatch(), N, n1, and n2.

◆ gaussian_pass_FIR()

static void Inkscape::Filters::gaussian_pass_FIR	(	Geom::Dim2	d,
		double	deviation,
		cairo_surface_t *	src,
		cairo_surface_t *	dest,
		dispatch_pool &	pool
	)

static

< Grayscale

< Premultiplied 8 bit RGBA

Definition at line 493 of file nr-filter-gaussian.cpp.

References _effect_area_scr(), _make_kernel(), stride, w, and Geom::X.

Referenced by Inkscape::Filters::FilterGaussian::render_cairo().

◆ gaussian_pass_IIR()

static void Inkscape::Filters::gaussian_pass_IIR	(	Geom::Dim2	d,
		double	deviation,
		cairo_surface_t *	src,
		cairo_surface_t *	dest,
		IIRValue **	tmpdata,
		dispatch_pool &	pool
	)

static

< Grayscale

< Premultiplied 8 bit RGBA

Definition at line 448 of file nr-filter-gaussian.cpp.

References calcFilter(), calcTriggsSdikaM(), N, stride, w, and Geom::X.

Referenced by Inkscape::Filters::FilterGaussian::render_cairo().

◆ get_cairo_op()

static cairo_operator_t Inkscape::Filters::get_cairo_op ( SPBlendMode _blend_mode )

inlinestatic

Definition at line 52 of file nr-filter-blend.cpp.

References SP_CSS_BLEND_COLOR, SP_CSS_BLEND_COLORBURN, SP_CSS_BLEND_COLORDODGE, SP_CSS_BLEND_DARKEN, SP_CSS_BLEND_DIFFERENCE, SP_CSS_BLEND_EXCLUSION, SP_CSS_BLEND_HARDLIGHT, SP_CSS_BLEND_HUE, SP_CSS_BLEND_LIGHTEN, SP_CSS_BLEND_LUMINOSITY, SP_CSS_BLEND_MULTIPLY, SP_CSS_BLEND_NORMAL, SP_CSS_BLEND_OVERLAY, SP_CSS_BLEND_SATURATION, SP_CSS_BLEND_SCREEN, and SP_CSS_BLEND_SOFTLIGHT.

Referenced by Inkscape::Filters::FilterBlend::render_cairo().

Classes

Enumerations

Functions

Enumeration Type Documentation

◆ FilterColorMatrixType

◆ FilterComponentTransferType

◆ FilterConvolveMatrixEdgeMode

◆ FilterMorphologyOperator

◆ FilterPrimitiveType

◆ FilterQuality

◆ FilterSlotType

◆ FilterTurbulenceType

◆ LightComponent

◆ LightType

◆ MorphologyOp

◆ PreserveAlphaMode

Function Documentation

◆ _effect_area_scr()

◆ _effect_subsample_step_log2()

◆ _make_kernel()

◆ calcFilter()

◆ calcTriggsSdikaInitialization()

◆ calcTriggsSdikaM()

◆ clamp()

◆ clamp3()

◆ clamp_alpha()

◆ filter2D_FIR()

◆ filter2D_IIR()

◆ gaussian_pass_FIR()

◆ gaussian_pass_IIR()

◆ get_cairo_op()