void checkConsistency()
{
// do a sanity check on the face
HalfEdge hedge = he0;
double maxd = 0;
int numv = 0;
if (numVerts < 3)
{
throw new Exception(
"degenerate face: " + getVertexString());
}
do
{
HalfEdge hedgeOpp = hedge.getOpposite();
if (hedgeOpp == null)
{
throw new Exception(
"face " + getVertexString() + ": " +
"unreflected half edge " + hedge.getVertexString());
}
else if (hedgeOpp.getOpposite() != hedge)
{
throw new Exception(
"face " + getVertexString() + ": " +
"opposite half edge " + hedgeOpp.getVertexString() +
" has opposite " +
hedgeOpp.getOpposite().getVertexString());
}
if (hedgeOpp.head() != hedge.tail() ||
hedge.head() != hedgeOpp.tail())
{
throw new Exception(
"face " + getVertexString() + ": " +
"half edge " + hedge.getVertexString() +
" reflected by " + hedgeOpp.getVertexString());
}
Face oppFace = hedgeOpp.face;
if (oppFace == null)
{
throw new Exception(
"face " + getVertexString() + ": " +
"no face on half edge " + hedgeOpp.getVertexString());
}
else if (oppFace.mark == DELETED)
{
throw new Exception(
"face " + getVertexString() + ": " +
"opposite face " + oppFace.getVertexString() +
" not on hull");
}
double d = Math.Abs(distanceToPlane(hedge.head().pnt));
if (d > maxd)
{
maxd = d;
}
numv++;
hedge = hedge.next;
}while (hedge != he0);
if (numv != numVerts)
{
throw new Exception(
"face " + getVertexString() + " numVerts=" + numVerts + " should be " + numv);
}
}