[smooth] Improve contour start (take 2).

* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
instead of...
(gray_start_cell): ... this function, which is removed.
(gray_convert_glyph): Make initial y-coordinate invalid.

ChangeLog

@@ -1,3 +1,12 @@
+2016-09-06  Alexei Podtelezhnikov  <apodtele@gmail.com>
+
+	[smooth] Improve contour start (take 2).
+
+	* src/smooth/ftgrays.c (gray_move_to): Call `gray_set_cell' directly
+	instead of...
+	(gray_start_cell): ... this function, which is removed.
+	(gray_convert_glyph): Make initial y-coordinate invalid.
+
 2016-09-06  Werner Lemberg  <wl@gnu.org>
 
 	[type1] MM fonts support exactly zero named instances (#48748).

src/smooth/ftgrays.c

@@ -605,29 +605,6 @@ typedef ptrdiff_t  FT_PtrDist;
   }
 
 
-  /*************************************************************************/
-  /*                                                                       */
-  /* Start a new contour at a given cell.                                  */
-  /*                                                                       */
-  static void
-  gray_start_cell( RAS_ARG_ TCoord  ex,
-                            TCoord  ey )
-  {
-    if ( ex > ras.max_ex )
-      ex = ras.max_ex;
-
-    if ( ex < ras.min_ex )
-      ex = ras.min_ex - 1;
-
-    ras.area    = 0;
-    ras.cover   = 0;
-    ras.ex      = ex - ras.min_ex;
-    ras.ey      = ey - ras.min_ey;
-    ras.invalid = 0;
-
-    gray_set_cell( RAS_VAR_ ex, ey );
-  }
-
 #ifndef FT_LONG64
 
   /*************************************************************************/
@@ -1224,15 +1201,11 @@ typedef ptrdiff_t  FT_PtrDist;
     TPos  x, y;
 
 
-    /* record current cell, if any */
-    if ( !ras.invalid )
-      gray_record_cell( RAS_VAR );
-
     /* start to a new position */
     x = UPSCALE( to->x );
     y = UPSCALE( to->y );
 
-    gray_start_cell( RAS_VAR_ TRUNC( x ), TRUNC( y ) );
+    gray_set_cell( RAS_VAR_ TRUNC( x ), TRUNC( y ) );
 
     ras.x = x;
     ras.y = y;
@@ -1852,7 +1825,7 @@ typedef ptrdiff_t  FT_PtrDist;
         ras.num_cells = 0;
         ras.invalid   = 1;
         ras.min_ey    = band[1];
-        ras.max_ey    = band[0];
+        ras.max_ey    = ras.ey = band[0];
         ras.count_ey  = width;
 
         error = gray_convert_glyph_inner( RAS_VAR );