NAME

       FcMatrixRotate - Rotate a matrix

SYNOPSIS

       #include <fontconfig/fontconfig.h>

       void FcMatrixRotate (FcMatrix *matrix, double cos, double sin);

DESCRIPTION

       FcMatrixRotate  rotates  matrix  by  the  angle  who's  sine  is  sin and cosine is cos.  This is done by
       multiplying by the matrix:

         cos -sin
         sin  cos

Fontconfig 2.12.6                                 05 April 2018                                FcMatrixRotate(3)