FcMatrixRotate.3 revision b09479dc
auto-generated by docbook2man-spec from docbook-utils package
"FcMatrixRotate" "3" "24 3月 2014" "Fontconfig 2.11.1" ""
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