utility.cpp

#include<iostream>
#include<assert.h>


void readMBR(char *file, const int size,const float r,
    float* &xmin, float* &ymin,float* &xmax, float* &ymax, int* &id)

{
    FILE *fp = fopen(file, "r");
    if (NULL == fp)
    {
        printf("open %s failed\n", file);
        exit(1);
    }
    xmin = new float[size];
    ymin = new float[size];
    xmax = new float[size];
    ymax = new float[size];
    id = new int[size];
    int pid,nume;

    float x1,y1,x2,y2;
    for (int i = 0; i < size; i++)
    {
        int ret = fscanf(fp, "%f,%f,%f,%f,%d,%d,%d\n",
                          &x1, &y1,&x2,&y2, &id[i],&pid,&nume);

        xmin[i]=std::min(x1,x2)-r;
        ymin[i]=std::min(y1,y2)-r;
        xmax[i]=std::max(x1,x2)+r;
        ymax[i]=std::max(y1,y2)+r;
        assert(ret==7);
    }
    fclose(fp);
}