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Diffstat (limited to 'src/csgtermnormalizer.cc')
| -rw-r--r-- | src/csgtermnormalizer.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/csgtermnormalizer.cc b/src/csgtermnormalizer.cc index 7a59aa1..b63ae05 100644 --- a/src/csgtermnormalizer.cc +++ b/src/csgtermnormalizer.cc @@ -2,12 +2,16 @@ #include "csgterm.h" #include "printutils.h" +/*! + NB! for e.g. empty intersections, this can normalize a tree to nothing and return NULL. +*/ shared_ptr<CSGTerm> CSGTermNormalizer::normalize(const shared_ptr<CSGTerm> &root, size_t limit) { shared_ptr<CSGTerm> temp = root; while (1) { shared_ptr<CSGTerm> n = normalizePass(temp); + if (!n) return n; // If normalized to nothing if (temp == n) break; temp = n; |