101 lines
2.3 KiB
Plaintext
101 lines
2.3 KiB
Plaintext
@FUNC@ FcMatrixInit
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@PURPOSE@ initialize an FcMatrix structure
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@TYPE1@ FcMatrix *
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@ARG1@ matrix
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@DESC@
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<function>FcMatrixInit</function> initializes <parameter>matrix</parameter>
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to the identity matrix.
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@@
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@FUNC@ FcMatrixCopy
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@PURPOSE@ Copy a matrix
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@TYPE1@ const FcMatrix *
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@ARG1@ matrix
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@DESC@
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<function>FcMatrixCopy</function> allocates a new FcMatrix
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and copies <parameter>mat</parameter> into it.
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@@
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@FUNC@ FcMatrixEqual
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@PURPOSE@ Compare two matrices
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@TYPE1@ const FcMatrix *
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@ARG1@ matrix1
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@TYPE2@ const FcMatrix *
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@ARG2@ matrix2
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@DESC@
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<function>FcMatrixEqual</function> compares <parameter>matrix1</parameter>
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and <parameter>matrix2</parameter> returning FcTrue when they are equal and
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FcFalse when they are not.
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@@
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@FUNC@ FcMatrixMultiply
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@PURPOSE@ Multiply matrices
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@TYPE1@ FcMatrix *
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@ARG1@ result
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@TYPE2@ const FcMatrix *
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@ARG2@ matrix1
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@TYPE3@ const FcMatrix *
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@ARG3@ matrix2
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@DESC@
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<function>FcMatrixMultiply</function> multiplies
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<parameter>matrix1</parameter> and <parameter>matrix2</parameter> storing
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the result in <parameter>result</parameter>.
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@@
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@FUNC@ FcMatrixRotate
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@PURPOSE@ Rotate a matrix
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@TYPE1@ FcMatrix *
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@ARG1@ matrix
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@TYPE2@ double
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@ARG2@ cos
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@TYPE3@ double
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@ARG3@ sin
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@DESC@
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<function>FcMatrixRotate</function> rotates <parameter>matrix</parameter>
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by the angle who's sine is <parameter>sin</parameter> and cosine is
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<parameter>cos</parameter>. This is done by multiplying by the
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matrix:
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<programlisting>
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cos -sin
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sin cos
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</programlisting>
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@@
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@FUNC@ FcMatrixScale
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@PURPOSE@ Scale a matrix
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@TYPE1@ FcMatrix *
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@ARG1@ matrix
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@TYPE2@ double
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@ARG2@ sx
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@TYPE3@ double
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@ARG3@ dy
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@DESC@
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<function>FcMatrixScale</function> multiplies <parameter>matrix</parameter>
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x values by <parameter>sx</parameter> and y values by
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<parameter>sy</parameter>. This is done by multiplying by
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the matrix:
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<programlisting>
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sx 0
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0 sy
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</programlisting>
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@@
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@FUNC@ FcMatrixShear
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@PURPOSE@ Shear a matrix
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@TYPE1@ FcMatrix *
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@ARG1@ matrix
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@TYPE2@ double
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@ARG2@ sh
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@TYPE3@ double
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@ARG3@ sv
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@DESC@
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<function>FcMatrixShare</function> shears <parameter>matrix</parameter>
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horizontally by <parameter>sh</parameter> and vertically by
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<parameter>sv</parameter>. This is done by multiplying by
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the matrix:
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<programlisting>
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1 sh
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sv 1
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</programlisting>
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@@
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