1FcMatrixRotate(3)                                            FcMatrixRotate(3)
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NAME

6       FcMatrixRotate - Rotate a matrix
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SYNOPSIS

9       #include <fontconfig/fontconfig.h>
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11       void FcMatrixRotate (FcMatrix *matrix, double cos, double sin);
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DESCRIPTION

14       FcMatrixRotate rotates matrix by the angle who's sine is sin and cosine
15       is cos. This is done by multiplying by the matrix:
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17         cos -sin
18         sin  cos
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23Fontconfig 2.13.92                09 8月 2019                FcMatrixRotate(3)