diff options
Diffstat (limited to 'game/geoData.cpp')
| -rw-r--r-- | game/geoData.cpp | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/game/geoData.cpp b/game/geoData.cpp index 5cea4dd..db0f3f4 100644 --- a/game/geoData.cpp +++ b/game/geoData.cpp @@ -286,9 +286,27 @@ GeoData::updateAllVertexNormals(const R & range) void GeoData::updateVertexNormal(VertexHandle vertex) { - Normal3D n; - calc_vertex_normal_correct(vertex, n); - set_normal(vertex, glm::normalize(n)); + Normal3D normal {}; + { // Lifted from calc_vertex_normal_correct in PolyMeshT_impl.hh but doesn't use Scalar to normalise + ConstVertexIHalfedgeIter cvih_it = this->cvih_iter(vertex); + if (!cvih_it.is_valid()) { // don't crash on isolated vertices + return; + } + Normal in_he_vec; + calc_edge_vector(*cvih_it, in_he_vec); + for (; cvih_it.is_valid(); ++cvih_it) { // calculates the sector normal defined by cvih_it and adds it to normal + if (this->is_boundary(*cvih_it)) { + continue; + } + HalfedgeHandle out_heh(this->next_halfedge_handle(*cvih_it)); + Normal out_he_vec; + calc_edge_vector(out_heh, out_he_vec); + normal += cross(in_he_vec, out_he_vec); // sector area is taken into account + in_he_vec = out_he_vec; + in_he_vec *= -1; // change the orientation + } + } // End lift + set_normal(vertex, glm::normalize(normal)); } OpenMesh::VertexHandle |