1mlib_ImageAffineIndex(3MLIBm)ediaLib Library Functionmslib_ImageAffineIndex(3MLIB)
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6 mlib_ImageAffineIndex - affine transformation on a color indexed image
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9 cc [ flag... ] file... -lmlib [ library... ]
10 #include <mlib.h>
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12 mlib_status mlib_ImageAffineIndex(mlib_image *dst, const mlib_image *src,
13 const mlib_d64 *mtx, mlib_filter filter, mlib_edge edge,
14 const void *colormap);
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18 The mlib_ImageAffineIndex() function does affine transformation on a
19 color indexed image according to the following equation:
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21 xd = a*xs + b*ys + tx
22 yd = c*xs + d*ys + ty
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26 where a point with coordinates (xs, ys) in the source image is mapped
27 to a point with coordinates (xd, yd) in the destination image.
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30 The image data type must be MLIB_BYTE or MLIB_SHORT.
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33 The width and height of the destination image can be different from the
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37 The center of the upper-left corner pixel of an image is located at
38 (0.5, 0.5).
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41 The function takes the following arguments:
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43 dst Pointer to destination image.
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46 src Pointer to source image.
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49 mtx Transformation matrix. mtx[0] holds a; mtx[1] holds b;
50 mtx[2] holds tx; mtx[3] holds c; mtx[4] holds d; mtx[5]
51 holds ty.
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54 filter Type of resampling filter. It can be one of the following:
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56 MLIB_NEAREST
57 MLIB_BILINEAR
58 MLIB_BICUBIC
59 MLIB_BICUBIC2
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63 edge Type of edge condition. It can be one of the following:
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65 MLIB_EDGE_DST_NO_WRITE
66 MLIB_EDGE_DST_FILL_ZERO
67 MLIB_EDGE_OP_NEAREST
68 MLIB_EDGE_SRC_EXTEND
69 MLIB_EDGE_SRC_PADDED
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73 colormap Internal data structure for inverse color mapping. This
74 data structure is generated by the mlib_ImageCol‐
75 orTrue2IndexInit() function.
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79 The function returns MLIB_SUCCESS if successful. Otherwise it returns
80 MLIB_FAILURE.
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83 See attributes(5) for descriptions of the following attributes:
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88 ┌─────────────────────────────┬─────────────────────────────┐
89 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
90 ├─────────────────────────────┼─────────────────────────────┤
91 │Interface Stability │Committed │
92 ├─────────────────────────────┼─────────────────────────────┤
93 │MT-Level │MT-Safe │
94 └─────────────────────────────┴─────────────────────────────┘
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97 mlib_ImageAffine(3MLIB), mlib_ImageAffine_Fp(3MLIB), mlib_ImageAffine‐
98 Transform(3MLIB), mlib_ImageAffineTransform_Fp(3MLIB),
99 mlib_ImageAffineTransformIndex(3MLIB), attributes(5)
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103SunOS 5.11 2 Mar 2007 mlib_ImageAffineIndex(3MLIB)