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//
// "$Id: Hill.cxx,v 1.13 2005/05/10 17:16:54 hofmann Exp $"
//
// Hill routines.
//
// Copyright 2005 by Johannes Hofmann
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "Hill.H"
static double pi_d, deg2rad;
Hill::Hill(const char *n, double p, double l, double h) {
name = strdup(n);
phi = p;
lam = l;
height = h;
alph = 0.0;
x = 0;
y = 0;
}
Hill::Hill(int x_tmp, int y_tmp) {
name = "";
phi = 0.0;
lam = 0.0;
height = 0.0;
alph = 0.0;
x = x_tmp;
y = y_tmp;
}
Hill::~Hill() {
if (name) {
free(name);
}
}
Hills::Hills() {
num = 0;
cap = 100;
m = (Hill **) malloc(cap * sizeof(Hill *));
pi_d = asin(1.0) * 2.0;
deg2rad = pi_d / 180.0;
}
int
Hills::load(const char *file) {
FILE *fp;
char buf[4000];
char *vals[10];
char **ap, *bp;
double phi, lam, height;
Hill *m;
fp = fopen(file, "r");
if (!fp) {
perror("fopen");
return 1;
}
while (fgets(buf, sizeof(buf), fp)) {
bp = buf;
for (ap = vals; (*ap = strsep(&bp, ",")) != NULL;)
if (++ap >= &vals[10])
break;
phi = atof(vals[3]) * deg2rad;
lam = atof(vals[4]) * deg2rad;
height = atof(vals[5]);
m = new Hill(vals[1], phi, lam, height);
add(m);
}
fclose(fp);
return 0;
}
Hills::~Hills() {
if (m) {
free(m);
}
}
void
Hills::add(Hill *m1) {
if (num >= cap) {
cap = cap?cap * 2:100;
m = (Hill **) realloc(m, cap * sizeof(Hill *));
}
m[num++] = m1;
}
static int
comp_mountains(const void *n1, const void *n2) {
Hill *m1 = *(Hill **)n1;
Hill *m2 = *(Hill **)n2;
if (m1 && m2) {
if (m1->alph < m2->alph) {
return 1;
} else if (m1->alph > m2->alph) {
return -1;
} else {
return 0;
}
} else {
return 0;
}
}
void
Hills::sort() {
if (!m) {
return;
}
qsort(m, num, sizeof(Hill *), comp_mountains);
}
void
Hills::clear() {
if (m) {
free(m);
m = NULL;
}
cap = 0;
num = 0;
}
void
Hills::clobber() {
int i;
for(i=0; i<get_num();i++) {
if (get(i)) {
delete(get(i));
}
}
clear();
}
int
Hills::get_num() {
return num;
}
Hill *
Hills::get(int n) {
if (n < 0 || n >= num) {
return NULL;
} else {
return m[n];
}
}
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