pixelbullet::Bitmap Class Reference

A simple Bitmap class that loads and writes images using lodepng. More...

#include <bitmap.h>

Public Member Functions
	Bitmap ()=default
	Default constructor.
	Bitmap (const Filesystem &filesystem, const VirtualPath &assetPath)
	Bitmap (const glm::uvec2 &size, uint32_t bytesPerPixel=4)
	Constructs an empty bitmap of the given size.
	Bitmap (const std::vector< uint8_t > &data, const glm::uvec2 &size, uint32_t bytesPerPixel=4)
	Constructs a bitmap with preloaded image data.
bool	Load (const Filesystem &filesystem, const VirtualPath &assetPath)
	Loads an image from the given asset path. This function uses stb_image to load an image from memory. The asset path should have been resolved already (via your asset system).
bool	Write (const std::filesystem::path &path) const
	Writes the bitmap as a PNG to the given filesystem path.
	operator bool () const noexcept
	Implicit conversion to bool. Returns true if the bitmap contains valid data.
uint32_t	GetLength () const
	Returns the total number of bytes in the image.
void	Clear ()
const std::string &	GetFilename () const
void	SetFilename (const std::string &f)
const std::vector< uint8_t > &	GetData () const
std::vector< uint8_t > &	GetData ()
void	SetData (const std::vector< uint8_t > &d)
void	SetData (std::vector< uint8_t > &&d)
const glm::uvec2 &	GetSize () const
void	SetSize (const glm::uvec2 &s)
uint32_t	GetBytesPerPixel () const
void	SetBytesPerPixel (uint32_t bpp)

Detailed Description

A simple Bitmap class that loads and writes images using lodepng.

Constructor & Destructor Documentation

Bitmap() [1/3]

pixelbullet::Bitmap::Bitmap ( )

default

Default constructor.

Bitmap() [2/3]

pixelbullet::Bitmap::Bitmap ( const glm::uvec2 & size, uint32_t bytesPerPixel = 4 )

inline

Constructs an empty bitmap of the given size.

Parameters

size	The image dimensions.
bytesPerPixel	The number of bytes per pixel (default is 4 for RGBA).

Bitmap() [3/3]

pixelbullet::Bitmap::Bitmap ( const std::vector< uint8_t > & data, const glm::uvec2 & size, uint32_t bytesPerPixel = 4 )

inline

Constructs a bitmap with preloaded image data.

Parameters

data	The raw image data.
size	The image dimensions.
bytesPerPixel	The number of bytes per pixel.

Member Function Documentation

GetLength()

uint32_t pixelbullet::Bitmap::GetLength

(

)

const

Returns the total number of bytes in the image.

Load()

bool pixelbullet::Bitmap::Load	(	const Filesystem &	filesystem,
		const VirtualPath &	assetPath )

Loads an image from the given asset path. This function uses stb_image to load an image from memory. The asset path should have been resolved already (via your asset system).

Parameters

assetPath

The path to the image file.

Returns

True on success, false otherwise.

operator bool()

pixelbullet::Bitmap::operator bool ( ) const

inlineexplicitnoexcept

Implicit conversion to bool. Returns true if the bitmap contains valid data.

Write()

bool pixelbullet::Bitmap::Write

(

const std::filesystem::path &

path

)

const

Writes the bitmap as a PNG to the given filesystem path.

Parameters

path	The output path (directories will be created if needed).

Returns

True on success, false otherwise.

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

• engine/include/pixelbullet/assets/bitmap.h
• engine/src/assets/bitmap.cc