1mlib_ImageRotateIndex(3MLIBm)ediaLib Library Functionmslib_ImageRotateIndex(3MLIB)
2
3
4
6 mlib_ImageRotateIndex - rotate color-indexed image
7
9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
11
12 mlib_status mlib_ImageRotateIndex(mlib_image *dst, const mlib_image *src,
13 mlib_d64 angle, mlib_d64 xcenter, mlib_d64 ycenter, mlib_filter filter,
14 mlib_edge edge, const void *colormap);
15
16
18 The mlib_ImageRotateIndex() function rotates the source image about a
19 user-defined rotation center in user-defined radians.
20
21
22 The width and height of the destination image can be different from the
23 width and height of the source image. The (xcenter, ycenter) point of
24 the source image is mapped to the center of the destination image. You
25 should ensure that the destination buffer is large enough to hold the
26 resulting bounding box to avoid clipping part of the image.
27
28
29 The source and destination images must be single-channel images.
30
31
32 The image data type must be MLIB_BYTE or MLIB_SHORT.
33
34
35 The center of the upper-left corner pixel of an image is located at
36 (0.5, 0.5).
37
39 The function takes the following arguments:
40
41 dst Pointer to destination image.
42
43
44 src Pointer to source image.
45
46
47 angle Angle of rotation. The angle is measured in radians clock‐
48 wise.
49
50
51 xcenter X coordinate of rotation center in the source image.
52
53
54 ycenter Y coordinate of rotation center in the source image.
55
56
57 filter Type of resampling filter. It can be one of the following:
58
59 MLIB_NEAREST
60 MLIB_BILINEAR
61 MLIB_BICUBIC
62 MLIB_BICUBIC2
63
64
65
66 edge Type of edge condition. It can be one of the following:
67
68 MLIB_EDGE_DST_NO_WRITE
69 MLIB_EDGE_DST_FILL_ZERO
70 MLIB_EDGE_OP_NEAREST
71 MLIB_EDGE_SRC_EXTEND
72 MLIB_EDGE_SRC_PADDED
73
74
75
76 colormap Internal data structure for inverse color mapping. This
77 data structure is generated by the mlib_ImageCol‐
78 orTrue2IndexInit() function.
79
80
82 The function returns MLIB_SUCCESS if successful. Otherwise it returns
83 MLIB_FAILURE.
84
86 See attributes(5) for descriptions of the following attributes:
87
88
89
90
91 ┌─────────────────────────────┬─────────────────────────────┐
92 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
93 ├─────────────────────────────┼─────────────────────────────┤
94 │Interface Stability │Committed │
95 ├─────────────────────────────┼─────────────────────────────┤
96 │MT-Level │MT-Safe │
97 └─────────────────────────────┴─────────────────────────────┘
98
100 mlib_ImageRotate(3MLIB), mlib_ImageRotate_Fp(3MLIB), attributes(5)
101
102
103
104SunOS 5.11 2 Mar 2007 mlib_ImageRotateIndex(3MLIB)