mlib_ImageZoomTranslate(3MmediaLib Library Functmlib_ImageZoomTranslate(3MLIB)NAMEmlib_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 ALSOmlib_ImageZoomTranslate_Fp(3MLIB), mlib_ImageAffine(3MLIB),
mlib_ImageAffine_Fp(3MLIB), attributes(5)SunOS 5.10 2 Mar 2007 mlib_ImageZoomTranslate(3MLIB)
