FcMatrixInit 3 FcMatrixInit initialize an FcMatrix structure #include <fontconfig.h> void FcMatrixInit FcMatrix *matrix FcMatrixInit initializes matrix to the identity matrix. Fontconfig version &version; FcMatrixCopy 3 FcMatrixCopy Copy a matrix #include <fontconfig.h> void FcMatrixCopy const FcMatrix *matrix FcMatrixCopy allocates a new FcMatrix and copies mat into it. Fontconfig version &version; FcMatrixEqual 3 FcMatrixEqual Compare two matrices #include <fontconfig.h> void FcMatrixEqual const FcMatrix *matrix1 const FcMatrix *matrix2 FcMatrixEqual compares matrix1 and matrix2 returning FcTrue when they are equal and FcFalse when they are not. Fontconfig version &version; FcMatrixMultiply 3 FcMatrixMultiply Multiply matrices #include <fontconfig.h> void FcMatrixMultiply FcMatrix *result const FcMatrix *matrix1 const FcMatrix *matrix2 FcMatrixMultiply multiplies matrix1 and matrix2 storing the result in result. Fontconfig version &version; FcMatrixRotate 3 FcMatrixRotate Rotate a matrix #include <fontconfig.h> void FcMatrixRotate FcMatrix *matrix double cos double sin 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 Fontconfig version &version; FcMatrixScale 3 FcMatrixScale Scale a matrix #include <fontconfig.h> void FcMatrixScale FcMatrix *matrix double sx double dy FcMatrixScale multiplies matrix x values by sx and y values by dy. This is done by multiplying by the matrix: sx 0 0 dy Fontconfig version &version; FcMatrixShear 3 FcMatrixShear Shear a matrix #include <fontconfig.h> void FcMatrixShear FcMatrix *matrix double sh double sv FcMatrixShare shears matrix horizontally by sh and vertically by sv. This is done by multiplying by the matrix: 1 sh sv 1 Fontconfig version &version;