Labelling: Support for better bitmaps granularity

[leo.git] / lab-bitmaps.c

diff --git a/lab-bitmaps.c b/lab-bitmaps.c
index 8845eac42ae0c4e80815df7a236b92ad826c7562..f5822e6f4b9c257b6fe01c6ef918e9776492022d 100644 (file)
--- a/lab-bitmaps.c
+++ b/lab-bitmaps.c
@@ -8,6 +8,7 @@
 
 #include "leo.h"
 #include "sym.h"
+#include "map.h"
 #include "labeller.h"
 #include "lab-bitmaps.h"
 #include "lab-utils.h"
@@ -22,6 +23,10 @@ static int overlaps(struct placement *p1, struct placement *p2);
 static struct map_part **get_map_parts(struct placement *p);
 static struct placement **get_overlapping(struct placement *p);
 
+double bitmap_granularity = 1;
+
+int page_width_gran, page_height_gran;
+
 
 void make_bitmap(struct variant *v, struct symbol *sym)
 {
@@ -104,11 +109,11 @@ static void make_bitmap_label(struct variant *v, struct sym_text *text)
 
 void dump_bitmaps(struct individual *individual)
 {
-  bool *bitmap = xmalloc(page_width_int * page_height_int * sizeof(bool));
-  printf("Bitmap size is %d\n", page_width_int * page_height_int);
-  for (int i=0; i<page_height_int; i++)
-    for (int j=0; j<page_width_int; j++)
-      bitmap[i*page_width_int + j] = 0;
+  bool *bitmap = xmalloc(page_width_gran * page_height_gran * sizeof(bool));
+  printf("Bitmap size is %d\n", page_width_gran * page_height_gran);
+  for (int i=0; i<page_height_gran; i++)
+    for (int j=0; j<page_width_gran; j++)
+      bitmap[i*page_width_gran + j] = 0;
 
   int total = 0;
   for (uns i=0; i<GARY_SIZE(individual->placements); i++)
@@ -130,10 +135,18 @@ void dump_bitmaps(struct individual *individual)
         continue;
     }
 
-    int base_x = p->x; int base_y = p->y;
-    for (int dr = max2(0, 0-p->y); dr < v->height; dr++)
+    // FIXME:
+    // if e.g. granularity is 2, p->x = 2.4 and v->width = 4
+    // then <2, 2.5> will be marked as occupied while <4, 4.5> won't be,
+    // though the variant occupies <2.4, 4,4> and therefore occupies much
+    // more of <4, 4.5> than of <2, 2.5>
+    int base_x = p->x * bitmap_granularity;
+    int base_y = p->y * bitmap_granularity;
+    int max_dr = min2(v->height - 1, (page_height - p->y) * bitmap_granularity);
+    int max_dc = min2(v->width - 1, (page_width - p->x) * bitmap_granularity);
+    for (int dr = max2(0, 0-p->y); dr < max_dr; dr++)
     {
-      for (int dc = max2(0, 0-p->x); dc < v->width; dc++)
+      for (int dc = max2(0, 0-p->x); dc < max_dc; dc++)
       {
         if (v->bitmap[dr * v->width + dc])
         {
@@ -147,12 +160,12 @@ void dump_bitmaps(struct individual *individual)
 
   FILE *fd_dump = fopen("dump.pbm", "w");
   fprintf(fd_dump, "P1\n");
-  fprintf(fd_dump, "%d %d\n", page_width_int, page_height_int);
-  for (int i=0; i<page_height_int; i++)
+  fprintf(fd_dump, "%d %d\n", page_width_gran, page_height_gran);
+  for (int i=0; i<page_height_gran; i++)
   {
-    for (int j=0; j<page_width_int; j++)
+    for (int j=0; j<page_width_gran; j++)
     {
-      fprintf(fd_dump, "%d", bitmap[(int) (i*page_width_int + j)] ? 1 : 0);
+      fprintf(fd_dump, "%d", bitmap[(int) (i*page_width_int*bitmap_granularity + j)] ? 1 : 0);
     }
     fprintf(fd_dump, "\n");
   }
@@ -187,10 +200,10 @@ static struct map_part **get_map_parts(struct placement *p)
 
   int x_min = max2(0, p->x) / conf_map_part_width;
   // CHECK ME: Is rounding needed?
-  int x_max = min2(page_width_int, (p->x + v.width)) / conf_map_part_width;
+  int x_max = min2(page_width_int, (p->x + v.width / bitmap_granularity)) / conf_map_part_width;
   int y_min = max2(0, p->y) / conf_map_part_height;
   // CHECK ME: Is rounding needed?
-  int y_max = min2(page_height_int, (p->y + v.height)) / conf_map_part_height;
+  int y_max = min2(page_height_int, (p->y + v.height / bitmap_granularity)) / conf_map_part_height;
 
   DEBUG(dbg_map_parts, VERBOSITY_PLACEMENT, "Cells between [%d; %d] and [%d; %d] generated\n", x_min, y_min, x_max, y_max);
 
@@ -343,18 +356,42 @@ static int overlaps(struct placement *p1, struct placement *p2)
   v1 = &(p1->request->variants[p1->variant_used]);
   v2 = &(p2->request->variants[p2->variant_used]);
 
-  // FIXME: This doesn't fully respect offset which it probably should
-  int p1x = p1->x; int p1y = p1->y;
-  int p2x = p2->x; int p2y = p2->y;
+  int x1, x2;
+  // FIXME: CHECK ME: Is rounding working all right here?
+  if (p1->x > p2->x)
+  {
+    x1 = 0;
+    x2 = (p1->x - p2->y) * bitmap_granularity;
+  }
+  else
+  {
+    x1 = (p2->x - p1->x) * bitmap_granularity;
+    x2 = 0;
+  }
+
+  int max_iter_x = min2(v1->width-1-x1, v2->width-1-x2);
+
+  int y1, y2;
+  if (p1->y > p2->y)
+  {
+    y1 = 0;
+    y2 = (p1->y - p2->y) * bitmap_granularity;
+  }
+  else
+  {
+    y1 = (p2->y - p1->y) * bitmap_granularity;
+    y2 = 0;
+  }
+
+  int max_iter_y = min2(v1->width-1-y1, v2->width-1-y2);
 
   int overlap = 0;
-  for (int y=max2(0, max2(p1y, p2y)); y<min2(page_height_int, min2(p1y+v1->height, p2y+v2->height)); y++)
-    for (int x=max2(0, max2(p1x, p2x)); x<min2(page_width_int, min2(p1x+v1->width, p2x+v2->width)); x++)
-    {
-      if (v1->bitmap[(y-p1y)*v1->width + (x-p1x)] &&
-          v2->bitmap[(y-p2y)*v2->width + (x-p2x)])
+  for (int j=0; j<max_iter_y; j++, y1++, y2++) {
+    for (int i=0; i<max_iter_x; i++, x1++, x2++) {
+      if (v1->bitmap[y1*v1->width + x1] && v2->bitmap[y2*v2->width + x2])
         overlap++;
     }
+  }
 
   return overlap;
 }
@@ -410,13 +447,13 @@ int get_overlap(struct placement *p, int **planned_ptr, int iteration)
     //dump_placement_links(p);
   }
 
-  if (p->x < 0) overlap += 0 - p->x;
-  if (p->x + p->request->variants[p->variant_used].width > page_width_int)
-    overlap += p->x + p->request->variants[p->variant_used].width - page_width_int;
+  if (p->x < 0) overlap += (0 - p->x) * bitmap_granularity;
+  if (p->x + p->request->variants[p->variant_used].width * bitmap_granularity > page_width)
+    overlap += p->x + p->request->variants[p->variant_used].width * bitmap_granularity - page_width;
 
-  if (p->y < 0) overlap += 0 - p->y;
-  if (p->y + p->request->variants[p->variant_used].height > page_height_int)
-    overlap += p->y + p->request->variants[p->variant_used].height - page_height_int;
+  if (p->y < 0) overlap += (0 - p->y) * bitmap_granularity;
+  if (p->y + p->request->variants[p->variant_used].height * bitmap_granularity > page_height)
+    overlap += p->y + p->request->variants[p->variant_used].height * bitmap_granularity - page_height;
 
   return overlap;
 }