--- /dev/null
+#define STB_CONNECTED_COMPONENTS_IMPLEMENTATION
+#define STBCC_GRID_COUNT_X_LOG2 10
+#define STBCC_GRID_COUNT_Y_LOG2 10
+#include "stb_connected_components.h"
+
+#ifdef GRID_TEST
+
+#include <windows.h>
+#include <stdio.h>
+#include <direct.h>
+
+//#define STB_DEFINE
+#include "stb.h"
+
+//#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
+//#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
+
+typedef struct
+{
+ uint16 x,y;
+} point;
+
+point leader[1024][1024];
+uint32 color[1024][1024];
+
+point find(int x, int y)
+{
+ point p,q;
+ p = leader[y][x];
+ if (p.x == x && p.y == y)
+ return p;
+ q = find(p.x, p.y);
+ leader[y][x] = q;
+ return q;
+}
+
+void onion(int x1, int y1, int x2, int y2)
+{
+ point p = find(x1,y1);
+ point q = find(x2,y2);
+
+ if (p.x == q.x && p.y == q.y)
+ return;
+
+ leader[p.y][p.x] = q;
+}
+
+void reference(uint8 *map, int w, int h)
+{
+ int i,j;
+
+ for (j=0; j < h; ++j) {
+ for (i=0; i < w; ++i) {
+ leader[j][i].x = i;
+ leader[j][i].y = j;
+ }
+ }
+
+ for (j=1; j < h-1; ++j) {
+ for (i=1; i < w-1; ++i) {
+ if (map[j*w+i] == 255) {
+ if (map[(j+1)*w+i] == 255) onion(i,j, i,j+1);
+ if (map[(j)*w+i+1] == 255) onion(i,j, i+1,j);
+ }
+ }
+ }
+
+ for (j=0; j < h; ++j) {
+ for (i=0; i < w; ++i) {
+ uint32 c = 0xff000000;
+ if (leader[j][i].x == i && leader[j][i].y == j) {
+ if (map[j*w+i] == 255)
+ c = stb_randLCG() | 0xff404040;
+ }
+ color[j][i] = c;
+ }
+ }
+
+ for (j=0; j < h; ++j) {
+ for (i=0; i < w; ++i) {
+ if (leader[j][i].x != i || leader[j][i].y != j) {
+ point p = find(i,j);
+ color[j][i] = color[p.y][p.x];
+ }
+ }
+ }
+}
+
+void write_map(stbcc_grid *g, int w, int h, char *filename)
+{
+ int i,j;
+ for (j=0; j < h; ++j) {
+ for (i=0; i < w; ++i) {
+ unsigned int c;
+ c = stbcc_get_unique_id(g,i,j);
+ c = stb_rehash_improved(c)&0xffffff;
+ if (c == STBCC_NULL_UNIQUE_ID)
+ c = 0xff000000;
+ else
+ c = (~c)^0x555555;
+ if (i % 32 == 0 || j %32 == 0) {
+ int r = (c >> 16) & 255;
+ int g = (c >> 8) & 255;
+ int b = c & 255;
+ r = (r+130)/2;
+ g = (g+130)/2;
+ b = (b+130)/2;
+ c = 0xff000000 + (r<<16) + (g<<8) + b;
+ }
+ color[j][i] = c;
+ }
+ }
+ stbi_write_png(filename, w, h, 4, color, 4*w);
+}
+
+void test_connected(stbcc_grid *g)
+{
+ int n = stbcc_query_grid_node_connection(g, 512, 90, 512, 871);
+ //printf("%d ", n);
+}
+
+static char *message;
+LARGE_INTEGER start;
+
+void start_timer(char *s)
+{
+ message = s;
+ QueryPerformanceCounter(&start);
+}
+
+void end_timer(void)
+{
+ LARGE_INTEGER end, freq;
+ double tm;
+
+ QueryPerformanceCounter(&end);
+ QueryPerformanceFrequency(&freq);
+
+ tm = (end.QuadPart - start.QuadPart) / (double) freq.QuadPart;
+ printf("%6.4lf ms: %s\n", tm * 1000, message);
+}
+
+extern void quicktest(void);
+
+int loc[5000][2];
+int main(int argc, char **argv)
+{
+ stbcc_grid *g;
+
+ int w,h, i,j,k=0, count=0, r;
+ uint8 *map = stbi_load("data/map_03.png", &w, &h, 0, 1);
+
+ assert(map);
+ quicktest();
+
+ for (j=0; j < h; ++j)
+ for (i=0; i < w; ++i)
+ map[j*w+i] = ~map[j*w+i];
+
+ for (i=0; i < w; ++i)
+ for (j=0; j < h; ++j)
+ //map[j*w+i] = (((i+1) ^ (j+1)) >> 1) & 1 ? 255 : 0;
+ map[j*w+i] = stb_max(abs(i-w/2),abs(j-h/2)) & 1 ? 255 : 0;
+ //map[j*w+i] = (((i ^ j) >> 5) ^ (i ^ j)) & 1 ? 255 : 0;
+ //map[j*w+i] = stb_rand() & 1 ? 255 : 0;
+
+ #if 1
+ for (i=0; i < 100000; ++i)
+ map[(stb_rand()%h)*w + stb_rand()%w] ^= 255;
+ #endif
+
+ _mkdir("tests/output/stbcc");
+
+ stbi_write_png("tests/output/stbcc/reference.png", w, h, 1, map, 0);
+
+ //reference(map, w, h);
+
+ g = malloc(stbcc_grid_sizeof());
+ printf("Size: %d\n", stbcc_grid_sizeof());
+
+#if 0
+ memset(map, 0, w*h);
+ stbcc_init_grid(g, map, w, h);
+ {
+ int n;
+ char **s = stb_stringfile("c:/x/clockwork_update.txt", &n);
+ write_map(g, w, h, "tests/output/stbcc/base.png");
+ for (i=1; i < n; i += 1) {
+ int x,y,t;
+ sscanf(s[i], "%d %d %d", &x, &y, &t);
+ if (i == 571678)
+ write_map(g, w, h, stb_sprintf("tests/output/stbcc/clockwork_good.png", i));
+ stbcc_update_grid(g, x, y, t);
+ if (i == 571678)
+ write_map(g, w, h, stb_sprintf("tests/output/stbcc/clockwork_bad.png", i));
+ //if (i > 571648 && i <= 571712)
+ //write_map(g, w, h, stb_sprintf("tests/output/stbcc/clockwork_%06d.png", i));
+ }
+ write_map(g, w, h, stb_sprintf("tests/output/stbcc/clockwork_%06d.png", i-1));
+ }
+ return 0;
+#endif
+
+
+ start_timer("init");
+ stbcc_init_grid(g, map, w, h);
+ end_timer();
+ //g = stb_file("c:/x/clockwork_path.bin", 0);
+ write_map(g, w, h, "tests/output/stbcc/base.png");
+
+ for (i=0; i < 5000;) {
+ loc[i][0] = stb_rand() % w;
+ loc[i][1] = stb_rand() % h;
+ if (stbcc_query_grid_open(g, loc[i][0], loc[i][1]))
+ ++i;
+ }
+
+ r = 0;
+ start_timer("reachable");
+ for (i=0; i < 2000; ++i) {
+ for (j=0; j < 2000; ++j) {
+ int x1 = loc[i][0], y1 = loc[i][1];
+ int x2 = loc[2000+j][0], y2 = loc[2000+j][1];
+ r += stbcc_query_grid_node_connection(g, x1,y1, x2,y2);
+ }
+ }
+ end_timer();
+ printf("%d reachable\n", r);
+
+ printf("Cluster size: %d,%d\n", STBCC__CLUSTER_SIZE_X, STBCC__CLUSTER_SIZE_Y);
+
+ #if 1
+ for (j=0; j < 10; ++j) {
+ for (i=0; i < 5000; ++i) {
+ loc[i][0] = stb_rand() % w;
+ loc[i][1] = stb_rand() % h;
+ }
+ start_timer("updating 2500");
+ for (i=0; i < 2500; ++i) {
+ if (stbcc_query_grid_open(g, loc[i][0], loc[i][1]))
+ stbcc_update_grid(g, loc[i][0], loc[i][1], 1);
+ else
+ stbcc_update_grid(g, loc[i][0], loc[i][1], 0);
+ }
+ end_timer();
+ write_map(g, w, h, stb_sprintf("tests/output/stbcc/update_random_%d.png", j*i));
+ }
+ #endif
+
+ #if 0
+ start_timer("removing");
+ count = 0;
+ for (i=0; i < 1800; ++i) {
+ int x,y,a,b;
+ x = stb_rand() % (w-32);
+ y = stb_rand() % (h-32);
+
+ if (i & 1) {
+ for (a=0; a < 32; ++a)
+ for (b=0; b < 1; ++b)
+ if (stbcc_query_grid_open(g, x+a, y+b)) {
+ stbcc_update_grid(g, x+a, y+b, 1);
+ ++count;
+ }
+ } else {
+ for (a=0; a < 1; ++a)
+ for (b=0; b < 32; ++b)
+ if (stbcc_query_grid_open(g, x+a, y+b)) {
+ stbcc_update_grid(g, x+a, y+b, 1);
+ ++count;
+ }
+ }
+
+ //if (i % 100 == 0) write_map(g, w, h, stb_sprintf("tests/output/stbcc/open_random_%d.png", i+1));
+ }
+ end_timer();
+ printf("Removed %d grid spaces\n", count);
+ write_map(g, w, h, stb_sprintf("tests/output/stbcc/open_random_%d.png", i));
+
+
+ r = 0;
+ start_timer("reachable");
+ for (i=0; i < 1000; ++i) {
+ for (j=0; j < 1000; ++j) {
+ int x1 = loc[i][0], y1 = loc[i][1];
+ int x2 = loc[j][0], y2 = loc[j][1];
+ r += stbcc_query_grid_node_connection(g, x1,y1, x2,y2);
+ }
+ }
+ end_timer();
+ printf("%d reachable\n", r);
+
+ start_timer("adding");
+ count = 0;
+ for (i=0; i < 1800; ++i) {
+ int x,y,a,b;
+ x = stb_rand() % (w-32);
+ y = stb_rand() % (h-32);
+
+ if (i & 1) {
+ for (a=0; a < 32; ++a)
+ for (b=0; b < 1; ++b)
+ if (!stbcc_query_grid_open(g, x+a, y+b)) {
+ stbcc_update_grid(g, x+a, y+b, 0);
+ ++count;
+ }
+ } else {
+ for (a=0; a < 1; ++a)
+ for (b=0; b < 32; ++b)
+ if (!stbcc_query_grid_open(g, x+a, y+b)) {
+ stbcc_update_grid(g, x+a, y+b, 0);
+ ++count;
+ }
+ }
+
+ //if (i % 100 == 0) write_map(g, w, h, stb_sprintf("tests/output/stbcc/close_random_%d.png", i+1));
+ }
+ end_timer();
+ write_map(g, w, h, stb_sprintf("tests/output/stbcc/close_random_%d.png", i));
+ printf("Added %d grid spaces\n", count);
+ #endif
+
+
+ #if 0 // for map_02.png
+ start_timer("process");
+ for (k=0; k < 20; ++k) {
+ for (j=0; j < h; ++j) {
+ int any=0;
+ for (i=0; i < w; ++i) {
+ if (map[j*w+i] > 10 && map[j*w+i] < 250) {
+ //start_timer(stb_sprintf("open %d,%d", i,j));
+ stbcc_update_grid(g, i, j, 0);
+ test_connected(g);
+ //end_timer();
+ any = 1;
+ }
+ }
+ if (any) write_map(g, w, h, stb_sprintf("tests/output/stbcc/open_row_%04d.png", j));
+ }
+
+ for (j=0; j < h; ++j) {
+ int any=0;
+ for (i=0; i < w; ++i) {
+ if (map[j*w+i] > 10 && map[j*w+i] < 250) {
+ //start_timer(stb_sprintf("close %d,%d", i,j));
+ stbcc_update_grid(g, i, j, 1);
+ test_connected(g);
+ //end_timer();
+ any = 1;
+ }
+ }
+ if (any) write_map(g, w, h, stb_sprintf("tests/output/stbcc/close_row_%04d.png", j));
+ }
+ }
+ end_timer();
+ #endif
+
+ return 0;
+}
+#endif
projects / henge / apc.git / blobdiff