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74>FcMatrixRotate</H1
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77><A
78NAME="AEN2831"
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80><H2
81>Name</H2
82>FcMatrixRotate&nbsp;--&nbsp;Rotate a matrix</DIV
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89>Synopsis</H2
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105>#include &#60;fontconfig/fontconfig.h&#62;
106        </PRE
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110><P
111><CODE
112><CODE
113CLASS="FUNCDEF"
114>void <TT
115CLASS="FUNCTION"
116>FcMatrixRotate</TT
117></CODE
118>(FcMatrix *<TT
119CLASS="PARAMETER"
120><I
121>matrix</I
122></TT
123>, double <TT
124CLASS="PARAMETER"
125><I
126>cos</I
127></TT
128>, double <TT
129CLASS="PARAMETER"
130><I
131>sin</I
132></TT
133>);</CODE
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144><H2
145>Description</H2
146><P
147><TT
148CLASS="FUNCTION"
149>FcMatrixRotate</TT
150> rotates <TT
151CLASS="PARAMETER"
152><I
153>matrix</I
154></TT
155>
156by the angle who's sine is <TT
157CLASS="PARAMETER"
158><I
159>sin</I
160></TT
161> and cosine is
162<TT
163CLASS="PARAMETER"
164><I
165>cos</I
166></TT
167>.  This is done by multiplying by the
168matrix:
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177>  cos -sin
178  sin  cos</PRE
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