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$ \theta = inAngle * \pi / 180 $
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$ \left [ \begin {array}{ll} a & b \\ c & d \\ \end {array} \right ] = \left [ \begin {array}{ll} GLC\_BITMAP\_MATRIX[0] & GLC\_BITMAP\_MATRIX[2] \\ GLC\_BITMAP\_MATRIX[1] & GLC\_BITMAP\_MATRIX[3] \\ \end{array} \right ] \left [ \begin {array}{ll} cos \theta & sin \theta \\ -sin \theta & cos\theta \\ \end{array} \right ] $
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$ \left [ \begin {array}{ll} a & b \\ c & d \\ \end {array} \right ] = \left [ \begin {array}{ll} GLC\_BITMAP\_MATRIX[0] & GLC\_BITMAP\_MATRIX[2] \\ GLC\_BITMAP\_MATRIX[1] & GLC\_BITMAP\_MATRIX[3] \\ \end{array} \right ] \left [ \begin {array}{ll} inX & 0 \\ 0 & inY \\ \end{array} \right ] $
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$ \left ( \begin {array}{ll} x_r-x_l \\ y_r-y_l \\ \end{array} \right ) $
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