killem

[rrdtool.git] / libraries / libart_lgpl-2.3.7 / art_rect_uta.c

diff --git a/libraries/libart_lgpl-2.3.7/art_rect_uta.c b/libraries/libart_lgpl-2.3.7/art_rect_uta.c
deleted file mode 100644 (file)
index 88f95c3..0000000
--- a/libraries/libart_lgpl-2.3.7/art_rect_uta.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/* Libart_LGPL - library of basic graphic primitives
- * Copyright (C) 1998 Raph Levien
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include "art_misc.h"
-#include "art_uta.h"
-#include "art_rect.h"
-#include "art_rect_uta.h"
-
-/* Functions to decompose a microtile array into a list of rectangles. */
-
-/**
- * art_rect_list_from_uta: Decompose uta into list of rectangles.
- * @uta: The source uta.
- * @max_width: The maximum width of the resulting rectangles.
- * @max_height: The maximum height of the resulting rectangles.
- * @p_nrects: Where to store the number of returned rectangles.
- *
- * Allocates a new list of rectangles, sets *@p_nrects to the number
- * in the list. This list should be freed with art_free().
- *
- * Each rectangle bounded in size by (@max_width, @max_height).
- * However, these bounds must be at least the size of one tile.
- *
- * This routine provides a precise implementation, i.e. the rectangles
- * cover exactly the same area as the uta. It is thus appropriate in
- * cases where the overhead per rectangle is small compared with the
- * cost of filling in extra pixels.
- *
- * Return value: An array containing the resulting rectangles.
- **/
-ArtIRect *
-art_rect_list_from_uta (ArtUta *uta, int max_width, int max_height,
-                       int *p_nrects)
-{
-  ArtIRect *rects;
-  int n_rects, n_rects_max;
-  int x, y;
-  int width, height;
-  int ix;
-  int left_ix;
-  ArtUtaBbox *utiles;
-  ArtUtaBbox bb;
-  int x0, y0, x1, y1;
-  int *glom;
-  int glom_rect;
-
-  n_rects = 0;
-  n_rects_max = 1;
-  rects = art_new (ArtIRect, n_rects_max);
-
-  width = uta->width;
-  height = uta->height;
-  utiles = uta->utiles;
-
-  glom = art_new (int, width * height);
-  for (ix = 0; ix < width * height; ix++)
-    glom[ix] = -1;
-
-  ix = 0;
-  for (y = 0; y < height; y++)
-    for (x = 0; x < width; x++)
-      {
-       bb = utiles[ix];
-       if (bb)
-         {
-           x0 = ((uta->x0 + x) << ART_UTILE_SHIFT) + ART_UTA_BBOX_X0(bb);
-           y0 = ((uta->y0 + y) << ART_UTILE_SHIFT) + ART_UTA_BBOX_Y0(bb);
-           y1 = ((uta->y0 + y) << ART_UTILE_SHIFT) + ART_UTA_BBOX_Y1(bb);
-
-           left_ix = ix;
-           /* now try to extend to the right */
-           while (x != width - 1 &&
-                  ART_UTA_BBOX_X1(bb) == ART_UTILE_SIZE &&
-                  (((bb & 0xffffff) ^ utiles[ix + 1]) & 0xffff00ff) == 0 &&
-                  (((uta->x0 + x + 1) << ART_UTILE_SHIFT) +
-                   ART_UTA_BBOX_X1(utiles[ix + 1]) -
-                   x0) <= max_width)
-             {
-               bb = utiles[ix + 1];
-               ix++;
-               x++;
-             }
-           x1 = ((uta->x0 + x) << ART_UTILE_SHIFT) + ART_UTA_BBOX_X1(bb);
-
-
-           /* if rectangle nonempty */
-           if ((x1 ^ x0) | (y1 ^ y0))
-             {
-               /* try to glom onto an existing rectangle */
-               glom_rect = glom[left_ix];
-               if (glom_rect != -1 &&
-                   x0 == rects[glom_rect].x0 &&
-                   x1 == rects[glom_rect].x1 &&
-                   y0 == rects[glom_rect].y1 &&
-                   y1 - rects[glom_rect].y0 <= max_height)
-                 {
-                   rects[glom_rect].y1 = y1;
-                 }
-               else
-                 {
-                   if (n_rects == n_rects_max)
-                     art_expand (rects, ArtIRect, n_rects_max);
-                   rects[n_rects].x0 = x0;
-                   rects[n_rects].y0 = y0;
-                   rects[n_rects].x1 = x1;
-                   rects[n_rects].y1 = y1;
-                   glom_rect = n_rects;
-                   n_rects++;
-                 }
-               if (y != height - 1)
-                 glom[left_ix + width] = glom_rect;
-             }
-         }
-       ix++;
-      }
-
-  art_free (glom);
-  *p_nrects = n_rects;
-  return rects;
-}