opensolaris man page for mlib_imagezoomtranslate

mlib_ImageZoomTranslate(3MLIB)				    mediaLib Library Functions				    mlib_ImageZoomTranslate(3MLIB)

NAME
       mlib_ImageZoomTranslate - zoom, with translation

SYNOPSIS
       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       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 minify 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 destination 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 different 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.

       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 following:

		   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 attributes:

       +-----------------------------+-----------------------------+
       |      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							    2 Mar 2007					    mlib_ImageZoomTranslate(3MLIB)