Manual Pages for UNIX Operating System command usage for man mlib_ImageAffineIndex

mediaLib Library Functions           mlib_ImageAffineIndex(3MLIB)



NAME
     mlib_ImageAffineIndex - affine  transformation  on  a  color
     indexed image

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

     mlib_status mlib_ImageAffineIndex(mlib_image *dst, const mlib_image *src,
          const mlib_d64 *mtx, mlib_filter filter, mlib_edge edge,
          const void *colormap);


DESCRIPTION
     The mlib_ImageAffineIndex() function does affine transforma-
     tion  on  a  color  indexed image according to the following
     equation:

       xd = a*xs + b*ys + tx
       yd = c*xs + d*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 image data type must be MLIB_BYTE or MLIB_SHORT.


     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.


     mtx         Transformation matrix. mtx[0]  holds  a;  mtx[1]
                 holds b; mtx[2] holds tx; mtx[3] holds c; mtx[4]
                 holds d; mtx[5] holds ty.





SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions           mlib_ImageAffineIndex(3MLIB)



     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
                 following:

                   MLIB_EDGE_DST_NO_WRITE
                   MLIB_EDGE_DST_FILL_ZERO
                   MLIB_EDGE_OP_NEAREST
                   MLIB_EDGE_SRC_EXTEND
                   MLIB_EDGE_SRC_PADDED



     colormap    Internal data structure for inverse  color  map-
                 ping.  This  data  structure is generated by the
                 mlib_ImageColorTrue2IndexInit() function.


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:



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


SEE ALSO
     mlib_ImageAffine(3MLIB),         mlib_ImageAffine_Fp(3MLIB),
     mlib_ImageAffineTransform(3MLIB),
     mlib_ImageAffineTransform_Fp(3MLIB),
     mlib_ImageAffineTransformIndex(3MLIB), attributes(5)





SunOS 5.11           Last change: 2 Mar 2007                    2