opensolaris man page for mlib_imageaffinetransform

mlib_ImageAffineTransform(3MLIB)			    mediaLib Library Functions				  mlib_ImageAffineTransform(3MLIB)

NAME
       mlib_ImageAffineTransform - affine transformation on an image, checking the matrix first

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

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

DESCRIPTION
       The  mlib_ImageAffineTransform() function does affine transformation on an image, checking the matrix first and taking advantage of special
       cases.

       The following equation represents the affine transformation:

	 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 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.

       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.

       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

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_ImageAffine(3MLIB), mlib_ImageAffine_Fp(3MLIB), mlib_ImageAffineIndex(3MLIB),  mlib_ImageAffineTransform_Fp(3MLIB),  mlib_ImageAffine-
       TransformIndex(3MLIB), mlib_ImageSetPaddings(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					  mlib_ImageAffineTransform(3MLIB)