public static IEnumerable fHtmToCenterPoint(SqlInt64 HtmID)
{
double x, y, z;
ArrayList point = new ArrayList();
HtmTrixel htm = new HtmTrixel();
char[] name = new char[HtmTrixel.eMaxNameSize];
double[] v0, v1, v2;
double norm;
v0 = new double[3];
v1 = new double[3];
v2 = new double[3];
if (htm.hid2name(name, (long)HtmID) > 1)
{
htm.name2Triangle(name, v0, v1, v2);
x = v0[0] + v1[0] + v2[0];
y = v0[1] + v1[1] + v2[1];
z = v0[2] + v1[2] + v2[2];
norm = x * x + y * y + z * z;
norm = Math.Sqrt(norm);
x /= norm;
y /= norm;
z /= norm;
point.Add(new Triple(x, y, z));
}
else { /* return empty */ }
return (IEnumerable)point;
}
public static IEnumerable fHtmToCornerPoints(SqlInt64 HtmID)
{
ArrayList point = new ArrayList();
HtmTrixel htm = new HtmTrixel();
char[] name = new char[HtmTrixel.eMaxNameSize];
double[] v0, v1, v2;
v0 = new double[3];
v1 = new double[3];
v2 = new double[3];
if (htm.hid2name(name, (long)HtmID) > 1)
{
htm.name2Triangle(name, v0, v1, v2);
point.Add(new Triple(v0[0], v0[1], v0[2]));
point.Add(new Triple(v1[0], v1[1], v1[2]));
point.Add(new Triple(v2[0], v2[1], v2[2]));
}
else { /* return empty */ }
return (IEnumerable)point;
}
public static SqlString fHtmToString(SqlInt64 HtmID)
{
HtmTrixel htm = new HtmTrixel();
char[] name = new char[HtmTrixel.eMaxNameSize];
int level = htm.hid2name(name, (long)HtmID);
if (level < 0)
{
return (new SqlString("Invalid HTM Identifier."));
}
else
{
return (new SqlString(new string(name, 0, level)));
}
}
