Computer graphics

Classes
class	CVD::Brezenham
class	CVD::Brezenham8
struct	CVD::color< T, N >
struct	CVD::color< T, 1 >
struct	CVD::color< T, 3 >
Typedefs
typedef Brezenham	CVD::Bresenham
typedef Brezenham8	CVD::Bresenham8
Functions
template<class S , class T , class U >
void	CVD::combineImages (const Image< S > &a, const Image< T > &b, Image< U > &out, const ImageRef &dst=ImageRef_zero, ImageRef size=ImageRef(), const ImageRef &from=ImageRef_zero)
template<class T >
void	CVD::drawBox (SubImage< T > &im, const ImageRef &upperleft, const ImageRef &lowerright, const T &c)
template<class T >
void	CVD::drawCross (SubImage< T > &im, const ImageRef &p, double len, const T &c)
template<class T >
void	CVD::drawLine (SubImage< T > &im, const ImageRef &p1, const ImageRef &p2, const T &c)
template<class T >
void	CVD::drawLine (SubImage< T > &im, double x1, double y1, double x2, double y2, const T &c)
template<class T >
void	CVD::drawShape (SubImage< T > &im, const ImageRef &offset, const std::vector< ImageRef > &points, const T &c)
std::vector< ImageRef >	CVD::getCircle (int radius)
std::vector< ImageRef >	CVD::getDisc (float radius)
template<class S , class T , class U >
void	CVD::joinImages (const Image< S > &a, const Image< T > &b, Image< U > &J)

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Detailed Description

Classes and functions to support miscellaneous pixel operations

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Typedef Documentation

typedef Brezenham CVD::Bresenham

Alternative (and correct) spelling for this object

Definition at line 28 of file bresenham.h.

typedef Brezenham8 CVD::Bresenham8

Alternative (and correct) spelling for this object

Definition at line 31 of file bresenham.h.

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Function Documentation

template<class S , class T , class U >

void CVD::combineImages	(	const Image< S > &	a,
		const Image< T > &	b,
		Image< U > &	out,
		const ImageRef &	dst = ImageRef_zero,
		ImageRef	size = ImageRef(),
		const ImageRef &	from = ImageRef_zero
	)			[inline]

similar to copy but combines values from two source images into the output image. In the current implementation it simply adds the pixel values of two input images together and writes them into the output image.

Parameters:

	a	input image a to copy from
	b	input image b to copy from
	out	resulting combined image

Definition at line 270 of file draw.h.

template<class T >

void CVD::drawBox	(	SubImage< T > &	im,
		const ImageRef &	upperleft,
		const ImageRef &	lowerright,
		const T &	c
	)			[inline]

draws a box defined by the upper left and the lower right corners into an image

Parameters:

	im	image to draw in
	upperleft	ImageRef of upper left corner
	lowerright	ImageRef of lower right corner
	c	color of the box

Definition at line 192 of file draw.h.

template<class T >

void CVD::drawCross	(	SubImage< T > &	im,
		const ImageRef &	p,
		double	len,
		const T &	c
	)			[inline]

draws a cross defined by center point and length of the arms into an image

Parameters:

	im	image to draw in
	p	center point
	len	arm length
	c	color of the box

Definition at line 207 of file draw.h.

template<class T >

void CVD::drawLine	(	SubImage< T > &	im,
		const ImageRef &	p1,
		const ImageRef &	p2,
		const T &	c
	)			[inline]

draws a line defined by two ImageRef with given color into an image.

Parameters:

	im	image to draw in
	p1	start point
	p2	end point
	c	color of the line

Definition at line 149 of file draw.h.

template<class T >

void CVD::drawLine	(	SubImage< T > &	im,
		double	x1,
		double	y1,
		double	x2,
		double	y2,
		const T &	c
	)			[inline]

draws a line defined by start and end coordinates with given color into an image.

Parameters:

	im	image to draw in
	x1	x coordinate of start point
	y1	y coordinate of start point
	x2	x coordinate of end point
	y2	y coordinate of end point
	c	color of the line

Definition at line 127 of file draw.h.

template<class T >

void CVD::drawShape	(	SubImage< T > &	im,
		const ImageRef &	offset,
		const std::vector< ImageRef > &	points,
		const T &	c
	)			[inline]

draws a polyline defined by a set of points into an image. A given offset is added to all points.

Parameters:

	im	image to draw in
	offset	added to all points
	points	vector containing points
	c	color of the line

Definition at line 178 of file draw.h.

std::vector<ImageRef> CVD::getCircle

(

int

radius

)

returns coordinate for a circle of given radius around the origin. The result can be used with drawShape to draw it into an image.

Parameters:

radius

radius of the circle in pixels

Returns:

vector containig ImageRef for the circle

std::vector<ImageRef> CVD::getDisc

(

float

radius

)

returns coordinate for a disc of given radius around the origin. The result can be used with drawShape to draw it into an image.

Parameters:

radius

radius of the circle in pixels

Returns:

vector containig ImageRef for the circle

template<class S , class T , class U >

void CVD::joinImages	(	const Image< S > &	a,
		const Image< T > &	b,
		Image< U > &	J
	)			[inline]

joins two images side-by-side to create a larger image, any remaining empty region will be blacked out

Parameters:

	a	input image a to copy from
	b	input image b to copy from
	J	resulting joint image

Definition at line 245 of file draw.h.