.\" auto-generated by docbook2man-spec from docbook-utils package
.TH "FcMatrixRotate" "3" "31 3月 2022" "Fontconfig 2.14.0" ""
.SH NAME
FcMatrixRotate \- Rotate a matrix
.SH SYNOPSIS
.nf
\fB#include <fontconfig/fontconfig.h>
.sp
void FcMatrixRotate (FcMatrix *\fImatrix\fB, double \fIcos\fB, double \fIsin\fB);
.fi\fR
.SH "DESCRIPTION"
.PP
\fBFcMatrixRotate\fR rotates \fImatrix\fR
by the angle who's sine is \fIsin\fR and cosine is
\fIcos\fR\&. This is done by multiplying by the
matrix:
.sp
.nf
  cos -sin
  sin  cos
.sp
.fi
