PixelIterator Class Reference

Inheritance diagram for PixelIterator:

[legend]Collaboration diagram for PixelIterator:

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Detailed Description

Iterator over surface pixels.

Definition at line 14 of file PixelIterator.h.

Public Member Functions
	PixelIterator (SDL_Surface *surface)
	Creates new pixel iterator and locks the surface.
virtual	~PixelIterator ()
	Unlocks surface.
void	setPos (const V2 &pos)
bool	isValid () const
void	inc ()
bool	isTransparent () const
SDL_Color	getColor () const
Uint32	getPixel () const
void	putColor (const SDL_Color &color)
void	putPixel (Uint32 pixel)

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Constructor & Destructor Documentation

PixelIterator::PixelIterator (  SDL_Surface *  surface  )

Creates new pixel iterator and locks the surface. Definition at line 20 of file PixelIterator.cpp. { m_surface = surface; m_lock = new SurfaceLock(m_surface); m_p = static_cast<Uint8*>(surface->pixels); m_end = m_p + m_surface->h * m_surface->pitch; m_bpp = surface->format->BytesPerPixel; }

PixelIterator::~PixelIterator (   )  [virtual]

Unlocks surface. Definition at line 32 of file PixelIterator.cpp. { delete m_lock; }

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Member Function Documentation

SDL_Color PixelIterator::getColor (   )  const

Definition at line 56 of file PixelIterator.cpp. { SDL_Color color; SDL_GetRGBA(getPixel(), m_surface->format, &color.r, &color.g, &color.b, &color.unused); return color; }

Uint32 PixelIterator::getPixel (   )  const

Definition at line 65 of file PixelIterator.cpp. { return PixelTool::unpackPixel(m_bpp, m_p); }

void PixelIterator::inc (   )  [inline]

Definition at line 26 of file PixelIterator.h. { m_p += m_bpp; }

bool PixelIterator::isTransparent (   )  const

Definition at line 50 of file PixelIterator.cpp. { return getPixel() == m_surface->format->colorkey; }

bool PixelIterator::isValid (   )  const [inline]

Definition at line 25 of file PixelIterator.h. { return m_p < m_end; }

void PixelIterator::putColor (  const SDL_Color &  color  )

Definition at line 71 of file PixelIterator.cpp. { Uint32 pixel = SDL_MapRGBA(m_surface->format, color.r, color.g, color.b, color.unused); putPixel(pixel); }

void PixelIterator::putPixel (  Uint32  pixel  )

Definition at line 79 of file PixelIterator.cpp. { PixelTool::packPixel(m_bpp, m_p, pixel); }

void PixelIterator::setPos (  const V2 &  pos  )

Definition at line 38 of file PixelIterator.cpp. { int x = pos.getX(); int y = pos.getY(); assert((0 <= x && x < m_surface->w) && (0 <= y && y < m_surface->h)); m_p = static_cast<Uint8*>(m_surface->pixels) + y * m_surface->pitch + x * m_bpp; }

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

• PixelIterator.h
• PixelIterator.cpp

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