mlib_ImageRotateIndex(3MLImediaLib Library Functiomlib_ImageRotateIndex(3MLIB)NAMEmlib_ImageRotateIndex - rotate color-indexed image
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageRotateIndex(mlib_image *dst, const mlib_image *src,
mlib_d64 angle, mlib_d64 xcenter, mlib_d64 ycenter, mlib_filter filter,
mlib_edge edge, const void *colormap);
DESCRIPTION
The mlib_ImageRotateIndex() function rotates the source image about a
user-defined rotation center in user-defined radians.
The width and height of the destination image can be different from the
width and height of the source image. The (xcenter, ycenter) point of
the source image is mapped to the center of the destination image. You
should ensure that the destination buffer is large enough to hold the
resulting bounding box to avoid clipping part of the image.
The source and destination images must be single-channel images.
The image data type must be MLIB_BYTE or MLIB_SHORT.
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.
angle Angle of rotation. The angle is measured in radians clock‐
wise.
xcenter X coordinate of rotation center in the source image.
ycenter Y coordinate of rotation center in the source image.
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 mapping. This
data structure is generated by the mlib_ImageCol‐
orTrue2IndexInit() function.
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_ImageRotate(3MLIB), mlib_ImageRotate_Fp(3MLIB), attributes(5)SunOS 5.10 2 Mar 2007 mlib_ImageRotateIndex(3MLIB)
