FT_Angle FT_ANGLE_2PI FT_Angle_Diff FT_ANGLE_PI FT_ANGLE_PI2 FT_ANGLE_PI4 FT_Atan2 FT_Cos FT_Sin FT_Tan FT_Vector_From_Polar FT_Vector_Length FT_Vector_Polarize FT_Vector_Rotate FT_Vector_Unit

FT_Vector_Rotate ( FT_Vector *  vec, FT_Angle  angle  ) Definition at line 417 of file fttrigon.c. Referenced by FT_Vector_From_Polar(), and test_rotate(). { FT_Int shift; FT_Vector v; v.x = vec->x; v.y = vec->y; if ( angle && ( v.x != 0 || v.y != 0 ) ) { shift = ft_trig_prenorm( &v ); ft_trig_pseudo_rotate( &v, angle ); v.x = ft_trig_downscale( v.x ); v.y = ft_trig_downscale( v.y ); if ( shift > 0 ) { FT_Int32 half = (FT_Int32)1L << ( shift - 1 ); vec->x = ( v.x + half + FT_SIGN_LONG( v.x ) ) >> shift; vec->y = ( v.y + half + FT_SIGN_LONG( v.y ) ) >> shift; } else { shift = -shift; vec->x = v.x << shift; vec->y = v.y << shift; } } }