diff options
Diffstat (limited to 'src/PolySetCGALEvaluator.cc')
| -rw-r--r-- | src/PolySetCGALEvaluator.cc | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/src/PolySetCGALEvaluator.cc b/src/PolySetCGALEvaluator.cc index 81ae31e..6ed1ab4 100644 --- a/src/PolySetCGALEvaluator.cc +++ b/src/PolySetCGALEvaluator.cc @@ -281,12 +281,14 @@ PolySet *PolySetCGALEvaluator::evaluatePolySet(const LinearExtrudeNode &node) BOOST_FOREACH (AbstractNode * v, node.getChildren()) { if (v->modinst->isBackground()) continue; CGAL_Nef_polyhedron N = this->cgalevaluator.evaluateCGALMesh(*v); - if (N.dim != 2) { - PRINT("ERROR: linear_extrude() is not defined for 3D child objects!"); - } - else { - if (sum.empty()) sum = N.copy(); - else sum += N; + if (!N.empty()) { + if (N.dim != 2) { + PRINT("ERROR: linear_extrude() is not defined for 3D child objects!"); + } + else { + if (sum.empty()) sum = N.copy(); + else sum += N; + } } } @@ -379,12 +381,14 @@ PolySet *PolySetCGALEvaluator::evaluatePolySet(const RotateExtrudeNode &node) BOOST_FOREACH (AbstractNode * v, node.getChildren()) { if (v->modinst->isBackground()) continue; CGAL_Nef_polyhedron N = this->cgalevaluator.evaluateCGALMesh(*v); - if (N.dim != 2) { - PRINT("ERROR: rotate_extrude() is not defined for 3D child objects!"); - } - else { - if (sum.empty()) sum = N.copy(); - else sum += N; + if (!N.empty()) { + if (N.dim != 2) { + PRINT("ERROR: rotate_extrude() is not defined for 3D child objects!"); + } + else { + if (sum.empty()) sum = N.copy(); + else sum += N; + } } } |