[FREETYPE]

[reactos.git] / reactos / lib / 3rdparty / freetype / include / freetype / internal / ftcalc.h

diff --git a/reactos/lib/3rdparty/freetype/include/freetype/internal/ftcalc.h b/reactos/lib/3rdparty/freetype/include/freetype/internal/ftcalc.h
index c7e9901..f8b4324 100644 (file)
--- a/reactos/lib/3rdparty/freetype/include/freetype/internal/ftcalc.h
+++ b/reactos/lib/3rdparty/freetype/include/freetype/internal/ftcalc.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Arithmetic computations (specification).                             */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006 by                   */
+/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009 by       */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -111,6 +111,31 @@ FT_BEGIN_HEADER
 #endif /* TT_USE_BYTECODE_INTERPRETER */
 
 
+  /*
+   *  A variant of FT_Matrix_Multiply which scales its result afterwards.
+   *  The idea is that both `a' and `b' are scaled by factors of 10 so that
+   *  the values are as precise as possible to get a correct result during
+   *  the 64bit multiplication.  Let `sa' and `sb' be the scaling factors of
+   *  `a' and `b', respectively, then the scaling factor of the result is
+   *  `sa*sb'.
+   */
+  FT_BASE( void )
+  FT_Matrix_Multiply_Scaled( const FT_Matrix*  a,
+                             FT_Matrix        *b,
+                             FT_Long           scaling );
+
+
+  /*
+   *  A variant of FT_Vector_Transform.  See comments for
+   *  FT_Matrix_Multiply_Scaled.
+   */
+
+  FT_BASE( void )
+  FT_Vector_Transform_Scaled( FT_Vector*        vector,
+                              const FT_Matrix*  matrix,
+                              FT_Long           scaling );
+
+
   /*
    *  Return -1, 0, or +1, depending on the orientation of a given corner.
    *  We use the Cartesian coordinate system, with positive vertical values
@@ -140,6 +165,7 @@ FT_BEGIN_HEADER
 #define INT_TO_FIXED( x )      ( (FT_Long)(x) << 16 )
 #define F2DOT14_TO_FIXED( x )  ( (FT_Long)(x) << 2  )
 #define FLOAT_TO_FIXED( x )    ( (FT_Long)( x * 65536.0 ) )
+#define FIXED_TO_INT( x )      ( FT_RoundFix( x ) >> 16 )
 
 #define ROUND_F26DOT6( x )     ( x >= 0 ? (    ( (x) + 32 ) & -64 )     \
                                         : ( -( ( 32 - (x) ) & -64 ) ) )