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#include <iostream>
#include <stdio.h>
#include <CImg.h>
//#define TILE_WIDTH 200
//#define TILE_HEIGHT 200
//#define IMAGE_WIDTH 12200
//#define IMAGE_HEIGHT 12200
using namespace cimg_library;
int main(int argc, char **argv)
{
unsigned int TILE_SIZE, IMAGE_SIZE, x, y, tile_x, tile_y;
char out_name[] = "________.png";
if (argc != 4)
{
printf("%s in_file image_square tile_square\n",argv[0]);
return 1;
}
IMAGE_SIZE = atoi(argv[2]);
TILE_SIZE = atoi(argv[3]);
unsigned char *buf = (unsigned char*)malloc(TILE_SIZE);
FILE *fp = fopen(argv[1],"r");
if (!fp)
{
printf("ERROR: Cannot open file\n");
return 1;
}
CImg<unsigned char> buffer(TILE_SIZE, TILE_SIZE,1,3,1);
for (tile_y = 0; tile_y < IMAGE_SIZE/TILE_SIZE; tile_y++)
{
for (tile_x = 0; tile_x < IMAGE_SIZE/TILE_SIZE; tile_x++)
{
// Seek to data for start of this tile
#define DATA_Y (tile_y * (TILE_SIZE * TILE_SIZE) * (IMAGE_SIZE / TILE_SIZE))
#define DATA_X (tile_x * TILE_SIZE)
fseek(fp, DATA_Y+DATA_X, SEEK_SET);
printf("Creating tile (%d,%d)...\n", tile_x, tile_y);
for (y = 0; y < TILE_SIZE; y++)
{
fread(buf, TILE_SIZE, 1, fp);
for (x = 0; x < TILE_SIZE; x++)
{
#ifdef BW
if (buf[x] % 2)
{
buffer(x,y,0) = buffer(x,y,1) = buffer(x,y,2) = 255;
} else {
buffer(x,y,0) = buffer(x,y,1) = buffer(x,y,2) = 0;
}
#else
buffer(x,y,0) = 0;
buffer(x,y,1) = buf[x];
buffer(x,y,2) = 0;
#endif
}
// Seek and wrap around to next Y pos for tile
fseek(fp, IMAGE_SIZE-TILE_SIZE, SEEK_CUR);
}
sprintf(out_name,"%d,%d.png",tile_x,tile_y);
buffer.save(out_name);
}
}
fclose(fp);
free(buf);
}
//#ifdef BLACK
// if (buf[x] == 255)
// {
// buffer(x,y,0) = 0;
// buffer(x,y,1) = 0;
// buffer(x,y,2) = 0;
// } else {
//#endif
//#ifdef BLACK
// }
//#endif
// printf("%d,%d\n",x,y);
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