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#include <pt_surf_assoc.h>
PT_SURF_ASSOC :: PT_SURF_ASSOC()
{
len = 0;
pts = 0;
surfs = 0;
rep = 0;
}
PT_SURF_ASSOC :: ~PT_SURF_ASSOC()
{
unsigned long i;
if (len > 0)
{
for (i = 0; i < len; i++)
{
if (!--pts[i]->ref_count)
delete pts[i];
if (!--surfs[i]->ref_count)
delete surfs[i];
}
delete [] pts;
delete [] surfs;
delete [] rep;
}
}
unsigned long PT_SURF_ASSOC :: find(const K_POINT2D* x, const K_SURF* y)
{
unsigned long i;
for (i = 0; i < len && (x != pts[i] || y != surfs[i]); i++)
;
return i;
}
unsigned long PT_SURF_ASSOC :: locate(K_POINT2D* const x, K_SURF* const y)
{
unsigned long i, j;
K_POINT2D** p;
K_SURF** s;
long* r;
if ((i = find(x, y)) == len)
{
p = new K_POINT2D* [len + 1];
s = new K_SURF* [len + 1];
r = new long [len + 1];
for (j = 0; j < len; j++)
{
p[j] = pts[j];
// p[j]->ref_count++;
//
// if (!--pts[j]->ref_count)
// delete pts[j];
//
s[j] = surfs[j];
// s[j]->ref_count++;
//
// if (!--surfs[j]->ref_count)
// delete surfs[j];
//
r[j] = rep[j];
}
p[len] = x;
p[len]->ref_count++;
s[len] = y;
s[len]->ref_count++;
r[len] = len;
delete [] pts;
delete [] surfs;
delete [] rep;
len++;
pts = p;
surfs = s;
rep = r;
}
return i;
}
unsigned long PT_SURF_ASSOC :: record_as_assoc(K_POINT2D* const x,
K_SURF* const y,
K_POINT2D* const z,
K_SURF* const w)
{
unsigned long i, j, k, q;
unsigned long r;
i = locate(x, y);
j = locate(z, w);
if (rep[i] < rep[j])
{
r = rep[i];
q = rep[j];
}
else // if (rep[i] >= rep[j])
{
r = rep[j];
q = rep[i];
}
if (r != q)
for (k = 0; k < len; k++)
if (rep[k] == q)
rep[k] = r;
return r;
}
K_POINT2D* PT_SURF_ASSOC :: find_assoc_pt(const K_POINT2D* x0, const K_SURF* y,
const K_SURF* z)
{
unsigned long i, j;
K_POINT2D* x;
K_POINT2D* w;
w = 0;
if ((i = find(x0, y)) < len)
{
for (j = 0; j < len && (rep[j] != rep[i] || surfs[j] != z); j++)
;
if (j < len)
w = pts[j];
}
for (x = x0->next; !w && x != x0; x = x->next)
{
if ((i = find(x, y)) < len)
for (j = 0; j < len && (rep[j] != rep[i] || surfs[j] != z); j++)
;
if (j < len)
w = pts[j];
}
return w;
}
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