CSJ2K.j2k.image.Tiler.getInternCompData C# (CSharp) Метод

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getInternCompData() публичный Метод

Returns, in the blk argument, a block of image data containing the specifed rectangular area, in the specified component. The data is returned, as a reference to the internal data, if any, instead of as a copy, therefore the returned data should not be modified.

The rectangular area to return is specified by the 'ulx', 'uly', 'w' and 'h' members of the 'blk' argument, relative to the current tile. These members are not modified by this method. The 'offset' and 'scanw' of the returned data can be arbitrary. See the 'DataBlk' class.

This method, in general, is more efficient than the 'getCompData()' method since it may not copy the data. However if the array of returned data is to be modified by the caller then the other method is probably preferable.

If the data array in blk is null, then a new one is created if necessary. The implementation of this interface may choose to return the same array or a new one, depending on what is more efficient. Therefore, the data array in blk prior to the method call should not be considered to contain the returned data, a new array may have been created. Instead, get the array from blk after the method has returned.

The returned data may have its 'progressive' attribute set. In this case the returned data is only an approximation of the "final" data.

public getInternCompData ( CSJ2K.j2k.image.DataBlk blk, int c ) : CSJ2K.j2k.image.DataBlk
blk	CSJ2K.j2k.image.DataBlk	Its coordinates and dimensions specify the area to return, /// relative to the current tile. Some fields in this object are modified /// to return the data. /// ///
c	int	The index of the component from which to get the data. /// ///
Результат	CSJ2K.j2k.image.DataBlk

        public DataBlk getInternCompData(DataBlk blk, int c)
        {
            // Check that block is inside tile
            if (blk.ulx < 0 || blk.uly < 0 || blk.w > compW[c] || blk.h > compH[c])
            {
                throw new System.ArgumentException("Block is outside the tile");
            }
            // Translate to the sources coordinates
            //UPGRADE_WARNING: Data types in Visual C# might be different.  Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
            int incx = (int)System.Math.Ceiling(x0siz / (double)src.getCompSubsX(c));
            //UPGRADE_WARNING: Data types in Visual C# might be different.  Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
            int incy = (int)System.Math.Ceiling(y0siz / (double)src.getCompSubsY(c));
            blk.ulx -= incx;
            blk.uly -= incy;
            blk = src.getInternCompData(blk, c);
            // Translate back to the tiled coordinates
            blk.ulx += incx;
            blk.uly += incy;
            return blk;
        }

Tiler

ToString

getCompData

getCompULX

getCompULY

getFixedPoint

getInternCompData

getNumTiles

getTile

getTileCompHeight

getTileCompWidth

getTilingOrigin

isOrigSigned

nextTile

setTile