FcMatrixInit 3 Fontconfig &version; FcMatrixInit initialize an FcMatrix structure #include <fontconfig/fontconfig.h> void FcMatrixInit FcMatrix *matrix FcMatrixInit initializes matrix to the identity matrix. FcMatrixCopy 3 Fontconfig &version; FcMatrixCopy Copy a matrix #include <fontconfig/fontconfig.h> void FcMatrixCopy const FcMatrix *matrix FcMatrixCopy allocates a new FcMatrix and copies mat into it. FcMatrixEqual 3 Fontconfig &version; FcMatrixEqual Compare two matrices #include <fontconfig/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. FcMatrixMultiply 3 Fontconfig &version; FcMatrixMultiply Multiply matrices #include <fontconfig/fontconfig.h> void FcMatrixMultiply FcMatrix *result const FcMatrix *matrix1 const FcMatrix *matrix2 FcMatrixMultiply multiplies matrix1 and matrix2 storing the result in result. FcMatrixRotate 3 Fontconfig &version; FcMatrixRotate Rotate a matrix #include <fontconfig/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 FcMatrixScale 3 Fontconfig &version; FcMatrixScale Scale a matrix #include <fontconfig/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 FcMatrixShear 3 Fontconfig &version; FcMatrixShear Shear a matrix #include <fontconfig/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