Man page - fcmatrixshear(3)

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Package: libfontconfig-doc
apt-get install libfontconfig-doc

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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