Spiraling block generator. More...

#include <block.h>

Collaboration diagram for BlockGenerator:

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Public Member Functions
	BlockGenerator (const Vector2i &size, int blockSize)
	Create a block generator with. More...

bool	next (ImageBlock &block)
	Return the next block to be rendered. More...

void	reset ()
	Reset to the first block. More...

int	getBlockCount () const
	Return the total number of blocks.

Protected Types
enum	EDirection { ERight = 0 , EDown , ELeft , EUp }

Protected Attributes
Point2i	m_block

Vector2i	m_numBlocks

Vector2i	m_size

int	m_blockSize

int	m_numSteps

int	m_blocksLeft

int	m_stepsLeft

int	m_direction

tbb::mutex	m_mutex

Detailed Description

Spiraling block generator.

This class can be used to chop up an image into many small rectangular blocks suitable for parallel rendering. The blocks are ordered in spiraling pattern so that the center is rendered first.

Definition at line 137 of file block.h.

Constructor & Destructor Documentation

◆ BlockGenerator()

BlockGenerator::BlockGenerator	(	const Vector2i &	size,
		int	blockSize
	)

Create a block generator with.

Parameters

size	Size of the image that should be split into blocks
blockSize	Maximum size of the individual blocks

Definition at line 140 of file block.cpp.

Member Function Documentation

◆ next()

bool BlockGenerator::next ( ImageBlock & block )

Return the next block to be rendered.

This function is thread-safe

Returns: false if there were no more blocks

Definition at line 156 of file block.cpp.

◆ reset()

void BlockGenerator::reset ( )

Reset to the first block.

This function is thread-safe

Definition at line 148 of file block.cpp.

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

Public Member Functions