mirror of
https://bitbucket.org/cosmicvoids/vide_public.git
synced 2025-07-04 23:31:12 +00:00
346 lines
10 KiB
C
346 lines
10 KiB
C
#include "libqhull/qhull_a.h"
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#include "voz.h"
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#define DL for (d=0;d<3;d++)
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#define BF 1e30
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#define MAX(a,b) ( ((a) < (b)) ? (a) : (b) )
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int delaunadj (coordT *points, int nvp, int nvpbuf, int nvpall, PARTADJ **adjs);
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int vorvol (coordT *deladjs, coordT *points, pointT *intpoints, int numpoints, float *vol);
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int posread(char *posfile, float ***p, float fact);
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int main(int argc, char *argv[]) {
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int exitcode;
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pid_t i, j, np;
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float **r;
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coordT rtemp[3], *parts;
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coordT deladjs[3*MAXVERVER], points[3*MAXVERVER];
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pointT intpoints[3*MAXVERVER];
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FILE *pos, *out;
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char *posfile, outfile[200], *suffix, *outDir;
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PARTADJ *adjs;
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float *vols;
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realT predict, xmin,xmax,ymin,ymax,zmin,zmax;
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pid_t *orig;
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int isitinbuf;
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char isitinmain, d;
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int numdiv;
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pid_t nvp, nvpall, nvpbuf;
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realT width, width2, totwidth, totwidth2, bf, s, g;
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float border, boxsize;
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realT c[3];
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int b[3];
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double totalvol;
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if (argc != 10) {
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printf("Wrong number of arguments.\n");
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printf("arg1: position file\n");
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printf("arg2: border size\n");
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printf("arg3: boxsize\n");
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printf("arg4: suffix\n");
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printf("arg5: number of divisions\n");
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printf("arg6-8: b[0-2]\n\n");
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printf("arg9: output directory\n");
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exit(0);
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}
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posfile = argv[1];
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if (sscanf(argv[2],"%f",&border) != 1) {
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printf("That's no border size; try again.\n");
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exit(0);
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}
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if (sscanf(argv[3],"%f",&boxsize) != 1) {
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printf("That's no boxsize; try again.\n");
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exit(0);
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}
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suffix = argv[4];
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if (sscanf(argv[5],"%d",&numdiv) != 1) {
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printf("%s is no number of divisions; try again.\n",argv[5]);
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exit(0);
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}
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if (numdiv == 1) {
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printf("Only using one division; should only use for an isolated segment.\n");
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}
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if (numdiv < 1) {
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printf("Cannot have a number of divisions less than 1. Resetting to 1.\n");
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numdiv = 1;
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}
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if (sscanf(argv[6],"%d",&b[0]) != 1) {
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printf("That's no b index; try again.\n");
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exit(0);
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}
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if (sscanf(argv[7],"%d",&b[1]) != 1) {
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printf("That's no b index; try again.\n");
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exit(0);
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}
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if (sscanf(argv[8],"%d",&b[2]) != 1) {
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printf("That's no b index; try again.\n");
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exit(0);
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}
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outDir = argv[9];
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/* Boxsize should be the range in r, yielding a range 0-1 */
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np = posread(posfile,&r,1./boxsize);
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printf("%d particles\n",np);fflush(stdout);
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xmin = BF; xmax = -BF; ymin = BF; ymax = -BF; zmin = BF; zmax = -BF;
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for (i=0; i<np;i++) {
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if (r[i][0]<xmin) xmin = r[i][0]; if (r[i][0]>xmax) xmax = r[i][0];
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if (r[i][1]<ymin) ymin = r[i][1]; if (r[i][1]>ymax) ymax = r[i][1];
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if (r[i][2]<zmin) zmin = r[i][2]; if (r[i][2]>zmax) zmax = r[i][2];
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}
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printf("np: %d, x: %f,%f; y: %f,%f; z: %f,%f\n",np,xmin,xmax, ymin,ymax, zmin,zmax); fflush(stdout);
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width = 1./(float)numdiv;
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width2 = 0.5*width;
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if (border > 0.) bf = border;
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else bf = 0.1;
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/* In units of 0-1, the thickness of each subregion's buffer*/
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totwidth = width+2.*bf;
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totwidth2 = width2 + bf;
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s = width/(float)NGUARD;
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if ((bf*bf - 2.*s*s) < 0.) {
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printf("bf = %f, s = %f.\n",bf,s);
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printf("Not enough guard points for given border.\nIncrease guards to >= %f\n.",
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sqrt(2.)*width/bf);
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exit(0);
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}
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g = (bf / 2.)*(1. + sqrt(1 - 2.*s*s/(bf*bf)));
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printf("s = %f, bf = %f, g = %f.\n",s,bf,g);
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fflush(stdout);
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adjs = (PARTADJ *)malloc(np*sizeof(PARTADJ));
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if (adjs == NULL) {
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printf("Unable to allocate adjs\n");
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exit(0);
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}
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DL c[d] = ((float)b[d])*width;
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printf("c: %f,%f,%f\n",c[0],c[1],c[2]);
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/* Assign temporary array*/
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nvpbuf = 0; /* Number of particles to tesselate, including
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buffer */
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nvp = 0; /* Without the buffer */
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for (i=0; i<np; i++) {
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isitinbuf = 1;
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isitinmain = 1;
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DL {
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rtemp[d] = (double)r[i][d] - (double)c[d];
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if (rtemp[d] > 0.5) rtemp[d] --;
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if (rtemp[d] < -0.5) rtemp[d] ++;
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isitinbuf = isitinbuf && (fabs(rtemp[d]) < totwidth2);
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isitinmain = isitinmain && (fabs(rtemp[d]) <= width2);
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}
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if (isitinbuf) nvpbuf++;
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if (isitinmain) nvp++;
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}
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nvpbuf += 6*(NGUARD+1)*(NGUARD+1); /* number of guard
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points */
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parts = (coordT *)malloc(3*nvpbuf*sizeof(coordT));
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orig = (pid_t *)malloc(nvpbuf*sizeof(pid_t));
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if (parts == NULL) {
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printf("Unable to allocate parts\n");
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fflush(stdout);
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}
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if (orig == NULL) {
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printf("Unable to allocate orig\n");
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fflush(stdout);
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}
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nvp = 0; nvpall = 0; /* nvp = number of particles without buffer */
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xmin = BF; xmax = -BF; ymin = BF; ymax = -BF; zmin = BF; zmax = -BF;
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for (i=0; i<np; i++) {
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isitinmain = 1;
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DL {
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rtemp[d] = (realT)r[i][d] - (realT)c[d];
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if (rtemp[d] > 0.5) rtemp[d] --;
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if (rtemp[d] < -0.5) rtemp[d] ++;
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isitinmain = isitinmain && (fabs(rtemp[d]) <= width2);
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}
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if (isitinmain) {
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parts[3*nvp] = rtemp[0];
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parts[3*nvp+1] = rtemp[1];
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parts[3*nvp+2] = rtemp[2];
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orig[nvp] = i;
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nvp++;
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if (rtemp[0] < xmin) xmin = rtemp[0];
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if (rtemp[0] > xmax) xmax = rtemp[0];
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if (rtemp[1] < ymin) ymin = rtemp[1];
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if (rtemp[1] > ymax) ymax = rtemp[1];
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if (rtemp[2] < zmin) zmin = rtemp[2];
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if (rtemp[2] > zmax) zmax = rtemp[2];
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}
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}
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printf("nvp = %d\n",nvp);
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printf("x: %f,%f; y: %f,%f; z:%f,%f\n",xmin,xmax,ymin,ymax,zmin,zmax);
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nvpbuf = nvp;
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for (i=0; i<np; i++) {
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isitinbuf = 1;
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isitinmain = 1;
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DL {
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rtemp[d] = (realT)r[i][d] - (realT)c[d];
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if (rtemp[d] > 0.5) rtemp[d] --;
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if (rtemp[d] < -0.5) rtemp[d] ++;
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isitinbuf = isitinbuf && (fabs(rtemp[d])<totwidth2);
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isitinmain = isitinmain && (fabs(rtemp[d]) <= width2);
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}
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if (isitinbuf && !isitinmain) {
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/*printf("%3.3f ",sqrt(rtemp[0]*rtemp[0] + rtemp[1]*rtemp[1] +
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rtemp[2]*rtemp[2]));
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printf("|%2.2f,%2.2f,%2.2f,%f,%f",r[i][0],r[i][1],r[i][2],width2,totwidth2);*/
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parts[3*nvpbuf] = rtemp[0];
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parts[3*nvpbuf+1] = rtemp[1];
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parts[3*nvpbuf+2] = rtemp[2];
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orig[nvpbuf] = i;
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nvpbuf++;
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if (rtemp[0] < xmin) xmin = rtemp[0];
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if (rtemp[0] > xmax) xmax = rtemp[0];
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if (rtemp[1] < ymin) ymin = rtemp[1];
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if (rtemp[1] > ymax) ymax = rtemp[1];
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if (rtemp[2] < zmin) zmin = rtemp[2];
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if (rtemp[2] > zmax) zmax = rtemp[2];
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}
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}
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printf("nvpbuf = %d\n",nvpbuf);
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printf("x: %f,%f; y: %f,%f; z:%f,%f\n",xmin,xmax,ymin,ymax,zmin,zmax);
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nvpall = nvpbuf;
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predict = pow(width+2.*bf,3)*(float)np;
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printf("There should be ~ %f points; there are %d\n",predict,nvpbuf);
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for (i=0;i<np;i++) free(r[i]);
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free(r);
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/* Add guard points */
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for (i=0; i<NGUARD+1; i++) {
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for (j=0; j<NGUARD+1; j++) {
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/* Bottom */
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parts[3*nvpall] = -width2 + (realT)i * s;
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parts[3*nvpall+1] = -width2 + (realT)j * s;
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parts[3*nvpall+2] = -width2 - g;
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nvpall++;
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/* Top */
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parts[3*nvpall] = -width2 + (realT)i * s;
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parts[3*nvpall+1] = -width2 + (realT)j * s;
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parts[3*nvpall+2] = width2 + g;
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nvpall++;
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}
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}
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for (i=0; i<NGUARD+1; i++) { /* Don't want to overdo the corners*/
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for (j=0; j<NGUARD+1; j++) {
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parts[3*nvpall] = -width2 + (realT)i * s;
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parts[3*nvpall+1] = -width2 - g;
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parts[3*nvpall+2] = -width2 + (realT)j * s;
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nvpall++;
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parts[3*nvpall] = -width2 + (realT)i * s;
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parts[3*nvpall+1] = width2 + g;
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parts[3*nvpall+2] = -width2 + (realT)j * s;
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nvpall++;
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}
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}
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for (i=0; i<NGUARD+1; i++) {
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for (j=0; j<NGUARD+1; j++) {
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parts[3*nvpall] = -width2 - g;
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parts[3*nvpall+1] = -width2 + (realT)i * s;
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parts[3*nvpall+2] = -width2 + (realT)j * s;
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nvpall++;
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parts[3*nvpall] = width2 + g;
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parts[3*nvpall+1] = -width2 + (realT)i * s;
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parts[3*nvpall+2] = -width2 + (realT)j * s;
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nvpall++;
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}
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}
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xmin = BF; xmax = -BF; ymin = BF; ymax = -BF; zmin = BF; zmax = -BF;
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for (i=nvpbuf;i<nvpall;i++) {
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if (parts[3*i] < xmin) xmin = parts[3*i];
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if (parts[3*i] > xmax) xmax = parts[3*i];
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if (parts[3*i+1] < ymin) ymin = parts[3*i+1];
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if (parts[3*i+1] > ymax) ymax = parts[3*i+1];
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if (parts[3*i+2] < zmin) zmin = parts[3*i+2];
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if (parts[3*i+2] > zmax) zmax = parts[3*i+2];
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}
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printf("Added guard points to total %d points (should be %d)\n",nvpall,
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nvpbuf + 6*(NGUARD+1)*(NGUARD+1));
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printf("x: %f,%f; y: %f,%f; z:%f,%f\n",xmin,xmax,ymin,ymax,zmin,zmax);
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/* Do tesselation*/
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printf("File read. Tessellating ...\n"); fflush(stdout);
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exitcode = delaunadj(parts, nvp, nvpbuf, nvpall, &adjs);
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if (exitcode != 0)
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{
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printf("Error while tesselating. Stopping here."); fflush(stdout);
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exit(1);
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}
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/* Now calculate volumes*/
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printf("Now finding volumes ...\n"); fflush(stdout);
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vols = (float *)malloc(nvp*sizeof(float));
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for (i=0; i<nvp; i++) { /* Just the original particles
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Assign adjacency coordinate array*/
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/* Volumes */
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for (j = 0; j < adjs[i].nadj; j++)
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DL {
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deladjs[3*j + d] = parts[3*adjs[i].adj[j]+d] - parts[3*i+d];
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if (deladjs[3*j+d] < -0.5) deladjs[3*j+d]++;
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if (deladjs[3*j+d] > 0.5) deladjs[3*j+d]--;
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}
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exitcode = vorvol(deladjs, points, intpoints, adjs[i].nadj, &(vols[i]));
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vols[i] *= (float)np;
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if (i % 1000 == 0)
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printf("%d: %d, %f\n",i,adjs[i].nadj,vols[i]);
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}
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/* Get the adjacencies back to their original values */
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for (i=0; i<nvp; i++)
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for (j = 0; j < adjs[i].nadj; j++)
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adjs[i].adj[j] = orig[adjs[i].adj[j]];
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totalvol = 0.;
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for (i=0;i<nvp; i++) {
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totalvol += (double)vols[i];
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}
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printf("Average volume = %g\n",totalvol/(float)nvp);
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/* Now the output!
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First number of particles */
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sprintf(outfile,"%s/part.%s.%02d.%02d.%02d",outDir,suffix,b[0],b[1],b[2]);
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printf("Output to %s\n\n",outfile);
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out = fopen(outfile,"w");
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if (out == NULL) {
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printf("Unable to open %s\n",outfile);
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exit(0);
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}
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fwrite(&np,1, sizeof(int),out);
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fwrite(&nvp,1, sizeof(int),out);
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printf("nvp = %d\n",nvp);
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/* Tell us where the original particles were */
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fwrite(orig,sizeof(pid_t),nvp,out);
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/* Volumes*/
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fwrite(vols,sizeof(float),nvp,out);
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/* Adjacencies */
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for (i=0;i<nvp;i++) {
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fwrite(&(adjs[i].nadj),1,sizeof(pid_t),out);
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if (adjs[i].nadj > 0)
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fwrite(adjs[i].adj,adjs[i].nadj,sizeof(pid_t),out);
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else printf("0");
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}
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fclose(out);
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return(0);
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}
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