Inkscape::Filters::PointLight Class Reference

#include <nr-light.h>

Public Member Functions
	PointLight (PointLightData const &light, guint32 lighting_color, const Geom::Affine &trans, int device_scale=1)
	Constructor.
virtual	~PointLight ()
void	light_vector (NR::Fvector &v, double x, double y, double z)
	Computes the light vector of the distant light at point (x,y,z).
void	light_components (NR::Fvector &lc)
	Computes the light components of the distant light.

Private Attributes
guint32	color
double	l_x
double	l_y
double	l_z

Detailed Description

Definition at line 71 of file nr-light.h.

Constructor & Destructor Documentation

PointLight()

Inkscape::Filters::PointLight::PointLight	(	PointLightData const &	light,
		guint32	lighting_color,
		const Geom::Affine &	trans,
		int	device_scale = 1
	)

Constructor.

Parameters

light	the sp light object
lighting_color	the lighting_color used
trans	the transformation between absolute coordinate (those employed in the sp light object) and current coordinate (those employed in the rendering)
device_scale	for high DPI monitors.

Definition at line 46 of file nr-light.cpp.

References color, NR::convert_coord(), l_x, l_y, l_z, Inkscape::Filters::PointLightData::x, Inkscape::Filters::PointLightData::y, and Inkscape::Filters::PointLightData::z.

~PointLight()

Inkscape::Filters::PointLight::~PointLight ( )

virtualdefault

Member Function Documentation

light_components()

void Inkscape::Filters::PointLight::light_components

(

NR::Fvector &

lc

)

Computes the light components of the distant light.

Parameters

lc	a Fvector reference where we store the result, X=R, Y=G, Z=B

Definition at line 63 of file nr-light.cpp.

References color, Inkscape::Filters::LIGHT_BLUE, Inkscape::Filters::LIGHT_GREEN, Inkscape::Filters::LIGHT_RED, SP_RGBA32_B_U(), SP_RGBA32_G_U(), and SP_RGBA32_R_U().

light_vector()

void Inkscape::Filters::PointLight::light_vector	(	NR::Fvector &	v,
		double	x,
		double	y,
		double	z
	)

Computes the light vector of the distant light at point (x,y,z).

x, y and z are given in the arena_item coordinate, they are used as is

Parameters

v	a Fvector reference where we store the result
x	x coordinate of the current point
y	y coordinate of the current point
z	z coordinate of the current point

Definition at line 56 of file nr-light.cpp.

References l_x, l_y, l_z, and NR::normalize_vector().

Member Data Documentation

color

guint32 Inkscape::Filters::PointLight::color

private

Definition at line 105 of file nr-light.h.

Referenced by light_components(), and PointLight().

l_x

double Inkscape::Filters::PointLight::l_x

private

Definition at line 107 of file nr-light.h.

Referenced by light_vector(), and PointLight().

l_y

double Inkscape::Filters::PointLight::l_y

private

Definition at line 108 of file nr-light.h.

Referenced by light_vector(), and PointLight().

l_z

double Inkscape::Filters::PointLight::l_z

private

Definition at line 109 of file nr-light.h.

Referenced by light_vector(), and PointLight().

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

• /builds/inkscape/inkscape/src/display/nr-light.h
• /builds/inkscape/inkscape/src/display/nr-light.cpp