cpe::z_buffer Class Reference

Class to manage a depth-buffer. More...

Collaboration diagram for cpe::z_buffer:

Public Member Functions
	z_buffer ()
	Constructor with size=0. More...
	z_buffer (int size)
	Constructor with square picture of size: size*size. More...
	z_buffer (int size_x, int size_y)
	Constructor with square picture of given size. More...
void	fill (double value)
	fill the z-buffe with special value More...
double	operator() (const pos2 &u) const
	Accessor of value of the z-buffer. More...
double &	operator() (const pos2 &u)
	Accessor of value of the z-buffer. More...
double	get_max () const
	return the max value of the z-buffer (eliminating the infinity value) More...
double	get_min () const
	return the min value of the z-buffer More...
int	size_x () const
	size of the z-buffer in x More...
int	size_y () const
	size of the z-buffer in y More...
void	export_file (const std::string &filename) const
	write the z-buffer as an image into a file More...

Protected Member Functions
int	coordinate_to_index (const pos2 &u) const
	convert (x,y) coordinate to index More...
void	assert_position (const pos2 &u) const
	check if u is in bounds of the picture More...

Private Attributes
std::vector< double >	internal_data
	check internal data More...
int	internal_size_x
	size x of the z-buffer More...
int	internal_size_y
	size y of the z-buffer More...

Static Private Attributes
static const double	depth_infinity =9e5
	infinity value More...

Detailed Description

Class to manage a depth-buffer.

Constructor & Destructor Documentation

cpe::z_buffer::z_buffer

(

)

Constructor with size=0.

cpe::z_buffer::z_buffer

(

int

size

)

Constructor with square picture of size: size*size.

Note

Init the z-buffer to infinity

References depth_infinity, and fill().

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cpe::z_buffer::z_buffer	(	int	size_x,
		int	size_y
	)

Constructor with square picture of given size.

Note

Init the z-buffer to infinity

References depth_infinity, and fill().

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Member Function Documentation

void cpe::z_buffer::assert_position ( const pos2 &  u ) const

protected

check if u is in bounds of the picture

References internal_size_x, internal_size_y, MACRO_EXCEPTION_PARAMETER, cpe::pos2::x(), and cpe::pos2::y().

Referenced by operator()().

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int cpe::z_buffer::coordinate_to_index ( const pos2 &  u ) const

protected

convert (x,y) coordinate to index

References internal_size_x, cpe::pos2::x(), and cpe::pos2::y().

Referenced by operator()().

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void cpe::z_buffer::export_file

(

const std::string &

filename

)

const

write the z-buffer as an image into a file

References cpe::export_ppm().

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void cpe::z_buffer::fill

(

double

value

)

fill the z-buffe with special value

References internal_data.

Referenced by z_buffer().

double cpe::z_buffer::get_max

(

)

const

return the max value of the z-buffer (eliminating the infinity value)

References depth_infinity, and internal_data.

Referenced by cpe::export_ppm().

double cpe::z_buffer::get_min

(

)

const

return the min value of the z-buffer

References depth_infinity, and internal_data.

Referenced by cpe::export_ppm().

double cpe::z_buffer::operator()

(

const pos2 &

u

)

const

Accessor of value of the z-buffer.

References assert_position(), coordinate_to_index(), and internal_data.

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double & cpe::z_buffer::operator()

(

const pos2 &

u

)

Accessor of value of the z-buffer.

References assert_position(), coordinate_to_index(), and internal_data.

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int cpe::z_buffer::size_x

(

)

const

size of the z-buffer in x

References internal_size_x.

Referenced by cpe::export_ppm().

int cpe::z_buffer::size_y

(

)

const

size of the z-buffer in y

References internal_size_y.

Referenced by cpe::export_ppm().

Member Data Documentation

const double cpe::z_buffer::depth_infinity =9e5

staticprivate

infinity value

Referenced by get_max(), get_min(), and z_buffer().

std::vector<double> cpe::z_buffer::internal_data

private

check internal data

Referenced by fill(), get_max(), get_min(), and operator()().

int cpe::z_buffer::internal_size_x

private

size x of the z-buffer

Referenced by assert_position(), coordinate_to_index(), and size_x().

int cpe::z_buffer::internal_size_y

private

size y of the z-buffer

Referenced by assert_position(), and size_y().

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

• /home/damien/work/2012_2013_teaching/2013_4eti_synthese_images/2013/TP_projectif_etudiant/libimage/z_buffer.hpp
• /home/damien/work/2012_2013_teaching/2013_4eti_synthese_images/2013/TP_projectif_etudiant/libimage/z_buffer.cpp