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create_cloud.c
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create_cloud.c
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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <time.h>
#include <stddef.h>
#include <math.h>
const int CLOUD_WIDTH = 1000000000;
const int CLOUD_HEIGHT = 1000000000;
typedef struct {
long long x;
long long y;
} point;
void cloud_generator(point *cloud, int cloud_size){
int i;
for(i = 0; i < cloud_size; i++){
// int x_c = rand()%CLOUD_WIDTH-(CLOUD_WIDTH/2); // Returns a pseudo-random integer between 0 and RAND_MAX.
// int y_c = rand()%CLOUD_HEIGHT-(CLOUD_HEIGHT/2); // Returns a pseudo-random integer between 0 and RAND_MAX.
// cloud[i] = (point){.x = x_c, .y = y_c};
long long max_width = rand()%CLOUD_WIDTH+1;
long long max_height = rand()%CLOUD_HEIGHT+1;
//printf("i: %d %d, %d\n",i, max_width, max_height);
long long x_c = rand()%max_width*(rand()%2*2-1); // Returns a pseudo-random integer between 0 and RAND_MAX.
long long y_c = rand()%max_height*(rand()%2*2-1); // Returns a pseudo-random integer between 0 and RAND_MAX.
cloud[i] = (point){.x = x_c, .y = y_c};
}
}
void print_cloud(point *cloud,int size, FILE *ptr){
int i;
if(ptr != NULL){
for(i = 0; i < size; i++){
point elem = cloud[i];
fprintf(ptr,"%lld;%lld\n",elem.x, elem.y);
}
}else{
for(i = 0; i < size; i++){
point elem = cloud[i];
printf("%lld;%lld\n",elem.x, elem.y);
}
printf("____________________________\n\n");
}
}
int compareX(const void *p1, const void *q1){
return ((point*)p1)->x - ((point*)q1)->x;
}
int main(int argc, char *argv[]) {
int cloud_size = atoi(argv[1]);
FILE *fptr;
fptr = fopen("cloud_to_load.txt","w");
point *cloud;
cloud = (point*)malloc(cloud_size * sizeof(point));
cloud_generator(cloud,cloud_size);
qsort(cloud, cloud_size, sizeof(point), compareX);
print_cloud(cloud,cloud_size,fptr);
}