Open CASCADE Technology  6.9.0
Public Member Functions

Image_AlienPixMap Class Reference

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:
Inheritance graph
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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 Save (const TCollection_AsciiString &theFileName)
 Write image data to file using file extension to determine compression format. More...
 
virtual bool InitTrash (ImgFormat thePixelFormat, const Standard_Size theSizeX, const Standard_Size theSizeY, const Standard_Size theSizeRowBytes=0)
 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)
 Initialize by copying data. More...
 
virtual void Clear ()
 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
ImgFormat Format () const
 
void SetFormat (const ImgFormat 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_Color PixelColor (const Standard_Integer theX, const Standard_Integer theY) const
 Returns the pixel color. This function is relatively slow. More...
 
Quantity_Color PixelColor (const Standard_Integer theX, const Standard_Integer theY, Quantity_Parameter &theAlpha) const
 Returns the pixel color. This function is relatively slow. theAlpha argument is set to color intensity (0 - transparent, 1 - opaque) More...
 
bool InitZero (ImgFormat 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_ByteData () const
 
Standard_ByteChangeData ()
 
const Standard_ByteRow (const Standard_Size theRow) const
 
Standard_ByteChangeRow (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...
 
- Public Member Functions inherited from Standard_Transient
 Standard_Transient ()
 Empty constructor. More...
 
 Standard_Transient (const Standard_Transient &)
 Copy constructor – does nothing. More...
 
Standard_Transientoperator= (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
Handle_Standard_Type & 
DynamicType () const
 Returns a type information object about this object. More...
 
Standard_Boolean IsInstance (const 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 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...
 
virtual Handle_Standard_Transient This () const
 Returns a Handle which references this object. Must never be called to objects created in stack. More...
 
Standard_Integer GetRefCount () const
 Get the reference counter of this object. More...
 

Additional Inherited Members

- Public Types inherited from Image_PixMap
enum  tagFormat {
  ImgUNKNOWN = 0, ImgGray = 1, ImgAlpha, ImgRGB,
  ImgBGR, ImgRGB32, ImgBGR32, ImgRGBA,
  ImgBGRA, ImgGrayF, ImgAlphaF, ImgRGBF,
  ImgBGRF, ImgRGBAF, ImgBGRAF
}
 This enumeration define packed image plane formats. More...
 
typedef enum
Image_PixMap::tagFormat 
ImgFormat
 This enumeration define packed image plane formats. More...
 
- Static Public Member Functions inherited from Image_PixMap
static bool IsBigEndianHost ()
 Determine Big-Endian at runtime. More...
 
static Standard_Size SizePixelBytes (const Image_PixMap::ImgFormat thePixelFormat)
 
- Protected Attributes inherited from Image_PixMap
Image_PixMapData myData
 data buffer More...
 
ImgFormat myImgFormat
 pixel format More...
 

Detailed Description

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

Constructor & Destructor Documentation

Image_AlienPixMap::Image_AlienPixMap ( )

Empty constructor.

virtual Image_AlienPixMap::~Image_AlienPixMap ( )
virtual

Destructor.

Member Function Documentation

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.

virtual void Image_AlienPixMap::Clear ( )
virtual

Method correctly deallocate internal buffer.

Reimplemented from Image_PixMap.

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

Initialize by copying data.

Reimplemented from Image_PixMap.

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

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.

bool Image_AlienPixMap::Load ( const TCollection_AsciiString theFileName)

Read image data from file.

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: