frysk-fcmatrixrotate(3) - Linux man page

Name

FcMatrixRotate - Rotate a matrix

Synopsis

#include <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

Version

Fontconfig version 2.4.2