Manual Pages for UNIX Operating System command usage for man mlib_ImageZoomTranslate

mediaLib Library Functions         mlib_ImageZoomTranslate(3MLIB)



NAME
     mlib_ImageZoomTranslate - zoom, with translation

SYNOPSIS
     cc [ flag... ] file... -lmlib [ library... ]
     #include 

     mlib_status mlib_ImageZoomTranslate(mlib_image *dst,
          const mlib_image *src, mlib_d64 zoomx, mlib_d64 zoomy,
          mlib_d64 tx, mlib_d64 ty, mlib_filter filter,
          mlib_edge edge);


DESCRIPTION
     The mlib_ImageZoomTranslate() function will enlarge or  min-
     ify  the  source  image  by  the  X and Y zoom factors, with
     translation. It uses the interpolation method  as  described
     by the resampling filter.


     It uses the following equation for coordinate mapping:

       xd = zoomx*xs + tx
       yd = zoomy*ys + ty



     where a point with coordinates (xs, ys) in the source  image
     is mapped to a point with coordinates (xd, yd) in the desti-
     nation image.


     The data type of the  images  can  be  MLIB_BIT,  MLIB_BYTE,
     MLIB_SHORT, MLIB_USHORT, or MLIB_INT.


     The width and height of the destination image  can  be  dif-
     ferent from the width and height of the source image.


     The center of the upper-left corner pixel  of  an  image  is
     located at (0.5, 0.5).

PARAMETERS
     The function takes the following arguments:

     dst       Pointer to destination image.


     src       Pointer to source image.





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mediaLib Library Functions         mlib_ImageZoomTranslate(3MLIB)



     zoomx     X zoom factor. zoomx > 0.


     zoomy     Y zoom factor. zoomy > 0.


     tx        X translation.


     ty        Y translation.


     filter    Type of resampling filter. It can be  one  of  the
               following:

                 MLIB_NEAREST
                 MLIB_BILINEAR
                 MLIB_BICUBIC
                 MLIB_BICUBIC2



     edge      Type of edge condition. It can be one of the  fol-
               lowing:

                 MLIB_EDGE_DST_NO_WRITE
                 MLIB_EDGE_DST_FILL_ZERO
                 MLIB_EDGE_OP_NEAREST
                 MLIB_EDGE_SRC_EXTEND
                 MLIB_EDGE_SRC_EXTEND_INDEF
                 MLIB_EDGE_SRC_PADDED



RETURN VALUES
     The function returns MLIB_SUCCESS if  successful.  Otherwise
     it returns MLIB_FAILURE.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:














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mediaLib Library Functions         mlib_ImageZoomTranslate(3MLIB)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_ImageZoomTranslate_Fp(3MLIB),  mlib_ImageAffine(3MLIB),
     mlib_ImageAffine_Fp(3MLIB), attributes(5)











































SunOS 5.11           Last change: 2 Mar 2007                    3