Image class that support file reading/writing operations using auxiliary image library. Supported image formats: More...

#include <Image_AlienPixMap.hxx>

Inheritance diagram for Image_AlienPixMap:

[legend]

Public Member Functions
	Image_AlienPixMap ()
	Empty constructor. More...

virtual	~Image_AlienPixMap ()
	Destructor. More...

bool	Load (const TCollection_AsciiString &theFileName)
	Read image data from file. More...

bool	Load (std::istream &theStream, const TCollection_AsciiString &theFileName)
	Read image data from stream. More...

bool	Load (const Standard_Byte *theData, Standard_Size theLength, const TCollection_AsciiString &theFileName)
	Read image data from memory buffer. More...

bool	Save (const TCollection_AsciiString &theFileName)
	Write image data to file using file extension to determine compression format. More...

virtual bool	InitTrash (Image_Format thePixelFormat, const Standard_Size theSizeX, const Standard_Size theSizeY, const Standard_Size theSizeRowBytes=0) override
	Initialize image plane with required dimensions. thePixelFormat - if specified pixel format doesn't supported by image library than nearest supported will be used instead! theSizeRowBytes - may be ignored by this class and required alignemnt will be used instead! More...

virtual bool	InitCopy (const Image_PixMap &theCopy) override
	Initialize by copying data. More...

virtual void	Clear () override
	Method correctly deallocate internal buffer. More...

bool	AdjustGamma (const Standard_Real theGammaCorr)
	Performs gamma correction on image. theGamma - gamma value to use; a value of 1.0 leaves the image alone. More...

Public Member Functions inherited from Image_PixMap
Image_Format	Format () const

void	SetFormat (const Image_Format thePixelFormat)
	Override pixel format specified by InitXXX() methods. Will throw exception if pixel size of new format is not equal to currently initialized format. Intended to switch formats indicating different interpretation of the same data (e.g. ImgGray and ImgAlpha). More...

Standard_Size	Width () const

Standard_Size	Height () const

Standard_Size	SizeX () const

Standard_Size	SizeY () const

Standard_Real	Ratio () const

bool	IsEmpty () const

	Image_PixMap ()
	Empty constructor. Initialize the NULL image plane. More...

virtual	~Image_PixMap ()
	Destructor. More...

Quantity_ColorRGBA	PixelColor (const Standard_Integer theX, const Standard_Integer theY) const
	Returns the pixel color. This function is relatively slow. Beware that this method takes coordinates in opposite order in contrast to ::Value() and ::ChangeValue(). More...

void	SetPixelColor (const Standard_Integer theX, const Standard_Integer theY, const Quantity_Color &theColor)
	Sets the pixel color. This function is relatively slow. Beware that this method takes coordinates in opposite order in contrast to ::Value() and ::ChangeValue(). More...

void	SetPixelColor (const Standard_Integer theX, const Standard_Integer theY, const Quantity_ColorRGBA &theColor)
	Sets the pixel color. This function is relatively slow. Beware that this method takes coordinates in opposite order in contrast to ::Value() and ::ChangeValue(). More...

bool	InitZero (Image_Format thePixelFormat, const Standard_Size theSizeX, const Standard_Size theSizeY, const Standard_Size theSizeRowBytes=0, const Standard_Byte theValue=0)
	Initialize image plane with required dimensions. Buffer will be zeroed (black color for most formats). More...

bool	IsTopDown () const
	Returns TRUE if image data is stored from Top to the Down. By default Bottom Up order is used instead (topmost scanlines starts from the bottom in memory). which is most image frameworks naturally support. More...

void	SetTopDown (const bool theIsTopDown)
	Setup scanlines order in memory - top-down or bottom-up. Drawers should explicitly specify this value if current state IsTopDown() was ignored! More...

Standard_Size	TopDownInc () const
	Returns +1 if scanlines ordered in Top->Down order in memory and -1 otherwise. More...

const Standard_Byte *	Data () const

Standard_Byte *	ChangeData ()

const Standard_Byte *	Row (const Standard_Size theRow) const

Standard_Byte *	ChangeRow (const Standard_Size theRow)

Standard_Size	SizePixelBytes () const

Standard_Size	SizeRowBytes () const

Standard_Size	RowExtraBytes () const

Standard_Size	MaxRowAligmentBytes () const
	Compute the maximal row alignment for current row size. More...

Standard_Size	SizeBytes () const

template<typename ColorType_t >
const ColorType_t &	Value (const Standard_Size theRow, const Standard_Size theCol) const
	Access image pixel with specified color type. This method does not perform any type checks - use on own risk (check Format() before)! More...

template<typename ColorType_t >
ColorType_t &	ChangeValue (const Standard_Size theRow, const Standard_Size theCol)
	Access image pixel with specified color type. This method does not perform any type checks - use on own risk (check Format() before)! More...

const Standard_Byte *	RawValue (Standard_Size theRow, Standard_Size theCol) const
	Access image pixel as raw data pointer. This method does not perform any type checks - use on own risk (check Format() before)! More...

Standard_Byte *	ChangeRawValue (Standard_Size theRow, Standard_Size theCol)
	Access image pixel as raw data pointer. This method does not perform any type checks - use on own risk (check Format() before)! More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual void	Delete () const
	Memory deallocator for transient classes. More...

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object. More...

Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

void	IncrementRefCounter () const
	Increments the reference counter of this object. More...

Standard_Integer	DecrementRefCounter () const
	Decrements the reference counter of this object; returns the decremented value. More...

Static Public Member Functions
static bool	IsTopDownDefault ()
	Return default rows order used by underlying image library. More...

Static Public Member Functions inherited from Image_PixMap
static bool	IsBigEndianHost ()
	Determine Big-Endian at runtime. More...

static bool	SwapRgbaBgra (Image_PixMap &theImage)
	Auxiliary method for swapping bytes between RGB and BGR formats. This method modifies the image data but does not change pixel format! Method will fail if pixel format is not one of the following: More...

static void	ToBlackWhite (Image_PixMap &theImage)
	Convert image to Black/White. More...

static Standard_Size	SizePixelBytes (const Image_Format thePixelFormat)

Static Public Member Functions inherited from Standard_Transient
static const char *	get_type_name ()
	Returns a type descriptor about this object. More...

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class. More...

Additional Inherited Members
Public Types inherited from Image_PixMap
typedef Image_Format	ImgFormat

Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object. More...

Static Public Attributes inherited from Image_PixMap
static const Image_Format	ImgUNKNOWN = Image_Format_UNKNOWN

static const Image_Format	ImgGray = Image_Format_Gray

static const Image_Format	ImgAlpha = Image_Format_Alpha

static const Image_Format	ImgRGB = Image_Format_RGB

static const Image_Format	ImgBGR = Image_Format_BGR

static const Image_Format	ImgRGB32 = Image_Format_RGB32

static const Image_Format	ImgBGR32 = Image_Format_BGR32

static const Image_Format	ImgRGBA = Image_Format_RGBA

static const Image_Format	ImgBGRA = Image_Format_BGRA

static const Image_Format	ImgGrayF = Image_Format_GrayF

static const Image_Format	ImgAlphaF = Image_Format_AlphaF

static const Image_Format	ImgRGBF = Image_Format_RGBF

static const Image_Format	ImgBGRF = Image_Format_BGRF

static const Image_Format	ImgRGBAF = Image_Format_RGBAF

static const Image_Format	ImgBGRAF = Image_Format_BGRAF

Protected Attributes inherited from Image_PixMap
Image_PixMapData	myData
	data buffer More...

Image_Format	myImgFormat
	pixel format More...

Detailed Description

Image class that support file reading/writing operations using auxiliary image library. Supported image formats:

*.bmp - bitmap image, lossless format without compression.
*.ppm - PPM (Portable Pixmap Format), lossless format without compression.
*.png - PNG (Portable Network Graphics) lossless format with compression.
*.jpg, *.jpe, *.jpeg - JPEG/JIFF (Joint Photographic Experts Group) lossy format (compressed with quality losses). YUV color space used (automatically converted from/to RGB).
*.tif, *.tiff - TIFF (Tagged Image File Format).
*.tga - TGA (Truevision Targa Graphic), lossless format.
*.gif - GIF (Graphical Interchange Format), lossy format. Color stored using palette (up to 256 distinct colors).
*.exr - OpenEXR high dynamic-range format (supports float pixel formats).

Constructor & Destructor Documentation

◆ Image_AlienPixMap()

Image_AlienPixMap::Image_AlienPixMap ( )

Empty constructor.

◆ ~Image_AlienPixMap()

virtual Image_AlienPixMap::~Image_AlienPixMap ( )

virtual

Destructor.

Member Function Documentation

◆ AdjustGamma()

bool Image_AlienPixMap::AdjustGamma ( const Standard_Real theGammaCorr )

Performs gamma correction on image. theGamma - gamma value to use; a value of 1.0 leaves the image alone.

◆ Clear()

virtual void Image_AlienPixMap::Clear ( )

overridevirtual

Method correctly deallocate internal buffer.

Reimplemented from Image_PixMap.

◆ InitCopy()

virtual bool Image_AlienPixMap::InitCopy ( const Image_PixMap & theCopy )

overridevirtual

Initialize by copying data.

Reimplemented from Image_PixMap.

◆ InitTrash()

virtual bool Image_AlienPixMap::InitTrash	(	Image_Format	thePixelFormat,
		const Standard_Size	theSizeX,
		const Standard_Size	theSizeY,
		const Standard_Size	theSizeRowBytes = `0`
	)

overridevirtual

Initialize image plane with required dimensions. thePixelFormat - if specified pixel format doesn't supported by image library than nearest supported will be used instead! theSizeRowBytes - may be ignored by this class and required alignemnt will be used instead!

Reimplemented from Image_PixMap.

◆ IsTopDownDefault()

static bool Image_AlienPixMap::IsTopDownDefault ( )

static

Return default rows order used by underlying image library.

◆ Load() [1/3]

bool Image_AlienPixMap::Load ( const TCollection_AsciiString & theFileName )

inline

Read image data from file.

◆ Load() [2/3]

bool Image_AlienPixMap::Load	(	std::istream &	theStream,
		const TCollection_AsciiString &	theFileName
	)

Read image data from stream.

◆ Load() [3/3]

bool Image_AlienPixMap::Load	(	const Standard_Byte *	theData,
		Standard_Size	theLength,
		const TCollection_AsciiString &	theFileName
	)

Read image data from memory buffer.

Parameters

theData	memory pointer to read from; when NULL, function will attempt to open theFileName file
theLength	memory buffer length
theFileName	optional file name

◆ Save()

bool Image_AlienPixMap::Save ( const TCollection_AsciiString & theFileName )

Write image data to file using file extension to determine compression format.

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

Image_AlienPixMap.hxx

Image_AlienPixMap Class Reference

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Image_AlienPixMap()

◆ ~Image_AlienPixMap()

Member Function Documentation

◆ AdjustGamma()

◆ Clear()

◆ InitCopy()

◆ InitTrash()

◆ IsTopDownDefault()

◆ Load() [1/3]

◆ Load() [2/3]

◆ Load() [3/3]

◆ Save()