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