-- File:	Image.cdl
-- Created:	Tue Jul 27 18:51:28 1993
-- Author:	Jean Louis FRENKEL
--		<jlf@sparc3>
---Copyright:	 Matra Datavision 1993

package Image

	---Purpose: The package Image provide PseudoColorImage and ColorImage
	--		definition and a set of key functions from the fields
	--		of image.

uses

    TCollection,
    TColStd,
    Aspect,
    Quantity,
    gp,
    MMgt

is
       ------------------------
        ---Category: The classes
        ------------------------

    deferred class Image;

    class PixelInterpolation;
    class AveragePixelInterpolation;
    class BalancedPixelInterpolation;
    class PlanarPixelInterpolation;
    class BilinearPixelInterpolation;
	---Purpose : Several methods to compute Pixel on non-integer Image
	--		coordinate.
    
    private generic class GPixelField;
	---Purpose : Generic Image definition . 

    deferred generic class GImage, PixelRow, PixelField;
	---Purpose : Generic Image definition . 

    deferred class DColorImage 
	instantiates GImage from Image (ColorPixel from Aspect);
	---Purpose : instantiates GImage for ColorImage definition . 

    deferred class DIndexedImage 
	instantiates GImage from Image (IndexPixel from Aspect);
	---Purpose : instantiates GImage for PseudoColorImage definition . 

    class PseudoColorImage;
	---Purpose : PseudoColorImage definition . 

    class ColorImage;
	---Purpose : ColorImage definition . 

    class Convertor;
    	---Purpose: converts aPseudoColorImage to a ColorImage and vice-versa.

    class ColorPixelMapHasher instantiates 
	MapHasher from TCollection( ColorPixel from Aspect );

    class ColorPixelDataMap instantiates
	DataMap   from TCollection ( ColorPixel from Aspect,
				     Integer    from Standard,
				     ColorPixelMapHasher from Image ) ;

    class IndexPixelMapHasher instantiates 
	MapHasher from TCollection( IndexPixel from Aspect );

    class LookupTable instantiates
	DataMap   from TCollection( IndexPixel from Aspect,
				    IndexPixel from Aspect,
				    IndexPixelMapHasher );

    class PixMap;
    ---Purpose: Aspect_PixMap implementation.

        -----------------------------
	---Category: Imported types:
        -----------------------------

	imported PixelAddress;

    imported HPrivateImage;

    imported CRawBufferData;

        -----------------------------
        ---Category: The Enumerations
        -----------------------------

    enumeration FlipType is 	FT_HORIZONTAL, 
				FT_VERTICAL, 
				FT_MAINDIAGONAL, 
				FT_ANTIDIAGONAL,
				FT_CENTER,
				FT_90,
				FT_180,
				FT_270
    end FlipType ;
    	---Purpose: Type of orientation in a symmetry.
    	-- - FT_HORIZONTAL : symmetry with respect to an horizontal axis.
    	-- - FT_VERTICAL : symmetry with respect to a vertical axis.
    	-- - FT_MAINDIAGONAL : symmetry with respect to a
    	--   diagonal oriented at 45 degrees.
    	-- - FT_ANTIDIAGONAL : symmetry with respect to a
    	--   diagonal oriented at -45 degrees.
    	-- - FT_CENTER :
    	-- - FT_90 : rotation of 90 degrees.
    	-- - FT_180 : rotation of 180 degrees.
    	-- - FT_270 : rotation of -90 degrees.
        
    enumeration DitheringMethod is	DM_NearestColor,
					DM_ErrorDiffusion
    end DitheringMethod ;
    	---Purpose: Type of dithering method.
    
    enumeration TypeOfImage is	TOI_ColorImage,
                TOI_PseudoColorImage,
                TOI_RGB,
                TOI_RGBA,
                TOI_RGBF,
                TOI_RGBAF,
                TOI_FLOAT
    end TypeOfImage ;

    Zoom     ( aImage         : mutable Image from Image ;
	       aInterpolation : PixelInterpolation from Image;
	       aCoefX,aCoefY  : in Real from Standard ) ;
	---Purpose : Zoom an Image with a specific PixelInterpolation method.

    Zoom     ( aImage         : mutable Image from Image ;
	       aCoefX,aCoefY  : in Real from Standard ) ;
	---Purpose : Zoom an Image with the default PixelInterpolation method.

    Rotate   ( aImage         : mutable Image from Image ;
	       aInterpolation : PixelInterpolation from Image;
	       aAngle         : in PlaneAngle from Quantity ) ;
	---Purpose : Rotate an Image with a specific PixelInterpolation method.

    Rotate   ( aImage         : mutable Image from Image ;
	       aAngle         : in PlaneAngle from Quantity ) ;
	---Purpose : Rotate an Image with the default PixelInterpolation method.

    Translate( aImage         : mutable Image from Image ;
	       aInterpolation : PixelInterpolation from Image;
	       DX, DY         : in Real from Standard ) ;
	---Purpose : Translate an Image with a specific PixelInterpolation 
	--		method.

    Translate( aImage         : mutable Image from Image ;
	       DX, DY         : in Real from Standard ) ;
	---Purpose : Translate an Image with the default PixelInterpolation 
	--		method.

    Affine( aImage            : mutable Image from Image ;
	       aInterpolation : PixelInterpolation from Image;
	       Trsf           : in GTrsf2d from gp ) ;
	---Purpose : General transformation of an Image with a specific 
	--		PixelInterpolation method.
	--	Warning:         
	--  		Raises an exception if the matrix of the transformation 
        --  		is not inversible.


    Affine( aImage            : mutable Image from Image ;
	       Trsf           : in GTrsf2d from gp ) ;
	---Purpose : General transformation of an Image with the default 
	--		PixelInterpolation method.
	--	Warning:         
	--  		Raises an exception if the matrix of the transformation 
        --  		is not inversible.

    Affine( aImage            : mutable Image from Image ;
	       aInterpolation : PixelInterpolation from Image;
	       Trsf           : in Trsf from gp ) ;
	---Purpose : General transformation of an Image with a specific 
	--		PixelInterpolation method.
	--	Warning:         
	--  		Raises an exception if the matrix of the transformation 
        --  		is not inversible.


    Affine( aImage            : mutable Image from Image ;
	       Trsf           : in Trsf from gp ) ;
	---Purpose : General transformation of an Image with the default 
	--		PixelInterpolation method.
	--	Warning:         
	--  		Raises an exception if the matrix of the transformation 
        --  		is not inversible.

end Image;