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Commit 209097ab authored by Philip Trettner's avatar Philip Trettner
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refactored access to internal information structs

parent 5dc77e5d
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src/polymesh/Mesh.hh
View file @ 209097ab
......@@ -204,13 +204,13 @@ private:
halfedge_index halfedge_of(edge_index idx, int i) const { return halfedge_index((idx.value << 1) + i); }
/// returns the vertex that this half-edge is pointing to
vertex_index to_vertex_of(halfedge_index idx) const { return mHalfedges[idx.value].to_vertex; }
vertex_index to_vertex_of(halfedge_index idx) const { return halfedge(idx).to_vertex; }
/// returns the vertex that this half-edge is leaving from
vertex_index from_vertex_of(halfedge_index idx) const { return mHalfedges[opposite(idx).value].to_vertex; }
vertex_index from_vertex_of(halfedge_index idx) const { return halfedge(opposite(idx)).to_vertex; }
// internal datastructures
private:
struct face
struct face_info
{
halfedge_index halfedge; ///< one half-edge bounding this face
......@@ -218,7 +218,7 @@ private:
void set_deleted() { halfedge = halfedge_index::invalid(); }
};
struct vertex
struct vertex_info
{
halfedge_index outgoing_halfedge;
......@@ -229,7 +229,7 @@ private:
// is_boundary: check if outgoing_halfedge is boundary
};
struct halfedge
struct halfedge_info
{
vertex_index to_vertex; ///< half-edge points towards this vertex
face_index face; ///< might be invalid if boundary
......@@ -249,9 +249,18 @@ private:
// internal primitives
private:
std::vector<face> mFaces;
std::vector<vertex> mVertices;
std::vector<halfedge> mHalfedges;
std::vector<face_info> mFaces;
std::vector<vertex_info> mVertices;
std::vector<halfedge_info> mHalfedges;
struct face_info &face(face_index i) { return mFaces[i.value]; }
struct face_info const &face(face_index i) const { return mFaces[i.value]; }
struct vertex_info &vertex(vertex_index i) { return mVertices[i.value]; }
struct vertex_info const &vertex(vertex_index i) const { return mVertices[i.value]; }
struct halfedge_info &halfedge(halfedge_index i) { return mHalfedges[i.value]; }
struct halfedge_info const &halfedge(halfedge_index i) const { return mHalfedges[i.value]; }
struct halfedge_info &halfedge(edge_index i, int h) { return mHalfedges[(i.value >> 1) + h]; }
struct halfedge_info const &halfedge(edge_index i, int h) const { return mHalfedges[(i.value >> 1) + h]; }
// internal state
private:
......@@ -300,7 +309,7 @@ inline vertex_index Mesh::add_vertex()
/// TODO: properties
auto idx = vertex_index((int)mVertices.size());
mVertices.push_back(vertex());
mVertices.push_back(vertex_info());
return idx;
}
......@@ -344,17 +353,17 @@ inline face_index Mesh::add_face(const halfedge_index *half_loop, size_t vcnt)
// half-edge must form a chain
assert(to_vertex_of(h0) == from_vertex_of(h1));
// half-edge must be free, i.e. allow a new polygon
assert(mHalfedges[h0.value].is_free());
assert(halfedge(h0).is_free());
// make them adjacent
make_adjacent(h0, h1);
// link face
mHalfedges[h0.value].face = fidx;
halfedge(h0).face = fidx;
}
// set up face data
face f;
face_info f;
f.halfedge = half_loop[0];
mFaces.push_back(f);
......@@ -370,16 +379,16 @@ inline edge_index Mesh::add_or_get_edge(vertex_index v_from, vertex_index v_to)
if (he.is_valid())
return edge_of(he);
auto &vd_from = mVertices[v_from.value];
auto &vd_to = mVertices[v_to.value];
auto &vd_from = vertex(v_from);
auto &vd_to = vertex(v_to);
// allocate new
auto he_size = (int)mHalfedges.size();
auto h_from_to_idx = halfedge_index(he_size + 0);
auto h_to_from_idx = halfedge_index(he_size + 1);
auto eidx = edge_index(he_size >> 1);
halfedge h_from_to;
halfedge h_to_from;
halfedge_info h_from_to;
halfedge_info h_to_from;
// setup data (self-connected edge)
h_from_to.to_vertex = v_to;
......@@ -394,9 +403,9 @@ inline edge_index Mesh::add_or_get_edge(vertex_index v_from, vertex_index v_to)
{
auto from_in_idx = find_free_incident(v_from);
assert(from_in_idx.is_valid() && "vertex is already fully connected");
auto &from_in = mHalfedges[from_in_idx.value];
auto &from_in = halfedge(from_in_idx);
auto from_out_idx = from_in.next_halfedge;
auto &from_out = mHalfedges[from_out_idx.value];
auto &from_out = halfedge(from_out_idx);
from_in.next_halfedge = h_from_to_idx;
h_from_to.prev_halfedge = from_in_idx;
......@@ -412,9 +421,9 @@ inline edge_index Mesh::add_or_get_edge(vertex_index v_from, vertex_index v_to)
{
auto to_in_idx = find_free_incident(v_to);
assert(to_in_idx.is_valid() && "vertex is already fully connected");
auto &to_in = mHalfedges[to_in_idx.value];
auto &to_in = halfedge(to_in_idx);
auto to_out_idx = to_in.next_halfedge;
auto &to_out = mHalfedges[to_out_idx.value];
auto &to_out = halfedge(to_out_idx);
to_in.next_halfedge = h_to_from_idx;
h_to_from.prev_halfedge = to_in_idx;
......@@ -434,14 +443,14 @@ inline halfedge_index Mesh::add_or_get_halfedge(vertex_index v_from, vertex_inde
auto e = add_or_get_edge(v_from, v_to);
auto h0 = halfedge_of(e, 0);
auto h1 = halfedge_of(e, 1);
return mHalfedges[h0.value].to_vertex == v_to ? h0 : h1;
return halfedge(h0).to_vertex == v_to ? h0 : h1;
}
inline void Mesh::make_adjacent(halfedge_index he_in, halfedge_index he_out)
{
// see http://kaba.hilvi.org/homepage/blog/halfedge/halfedge.htm ::makeAdjacent
auto &in = mHalfedges[he_in.value];
auto &out = mHalfedges[he_out.value];
auto &in = halfedge(he_in);
auto &out = halfedge(he_out);
auto he_b = in.next_halfedge;
auto he_d = out.prev_halfedge;
......@@ -454,12 +463,12 @@ inline void Mesh::make_adjacent(halfedge_index he_in, halfedge_index he_out)
auto he_g = find_free_incident(opposite(he_out), he_in);
assert(he_g.is_valid()); // unable to make adjacent
auto &b = mHalfedges[he_b.value];
auto &d = mHalfedges[he_d.value];
auto &g = mHalfedges[he_g.value];
auto &b = halfedge(he_b);
auto &d = halfedge(he_d);
auto &g = halfedge(he_g);
auto he_h = g.next_halfedge;
auto &h = mHalfedges[he_d.value];
auto &h = halfedge(he_d);
// properly rewire
in.next_halfedge = he_out;
......@@ -474,13 +483,13 @@ inline void Mesh::make_adjacent(halfedge_index he_in, halfedge_index he_out)
inline halfedge_index Mesh::find_free_incident(halfedge_index in_begin, halfedge_index in_end) const
{
assert(mHalfedges[in_begin.value].to_vertex == mHalfedges[in_end.value].to_vertex);
assert(halfedge(in_begin).to_vertex == halfedge(in_end).to_vertex);
auto he = in_begin;
do
{
auto const &h = mHalfedges[he.value];
assert(h.to_vertex == mHalfedges[in_end.value].to_vertex);
auto const &h = halfedge(he);
assert(h.to_vertex == halfedge(in_end).to_vertex);
// free? found one!
if (h.is_free())
......@@ -495,20 +504,20 @@ inline halfedge_index Mesh::find_free_incident(halfedge_index in_begin, halfedge
inline halfedge_index Mesh::find_free_incident(vertex_index v) const
{
auto in_begin = opposite(mVertices[v.value].outgoing_halfedge);
auto in_begin = opposite(vertex(v).outgoing_halfedge);
return find_free_incident(in_begin, in_begin);
}
inline halfedge_index Mesh::find_halfedge(vertex_index from, vertex_index to) const
{
auto he_begin = mVertices[from.value].outgoing_halfedge;
auto he_begin = vertex(from).outgoing_halfedge;
if (!he_begin.is_valid())
return halfedge_index::invalid(); // isolated vertex
auto he = he_begin;
do
{
auto const &h = mHalfedges[he.value];
auto const &h = halfedge(he);
// found?
if (h.to_vertex == to)
......@@ -524,13 +533,13 @@ inline halfedge_index Mesh::find_halfedge(vertex_index from, vertex_index to) co
inline bool Mesh::is_boundary(vertex_index idx) const
{
auto const &v = mVertices[idx.value];
auto const &v = vertex(idx);
return v.outgoing_halfedge.is_valid() && is_boundary(v.outgoing_halfedge);
}
inline bool Mesh::is_boundary(halfedge_index idx) const
{
return mHalfedges[idx.value].is_free();
return halfedge(idx).is_free();
}
inline halfedge_index Mesh::opposite(halfedge_index he) const
......@@ -952,42 +961,41 @@ inline valid_halfedge_iterator valid_halfedge_collection::end() const
inline bool vertex_handle::is_valid() const
{
return idx.is_valid() && mesh->mVertices[idx.value].is_valid();
return idx.is_valid() && mesh->vertex(idx).is_valid();
}
inline bool vertex_handle::is_deleted() const
{
return !idx.is_valid() || !mesh->mVertices[idx.value].is_valid();
return !idx.is_valid() || !mesh->vertex(idx).is_valid();
}
inline bool face_handle::is_valid() const
{
return idx.is_valid() && mesh->mFaces[idx.value].is_valid();
return idx.is_valid() && mesh->face(idx).is_valid();
}
inline bool face_handle::is_deleted() const
{
return !idx.is_valid() || !mesh->mFaces[idx.value].is_valid();
return !idx.is_valid() || !mesh->face(idx).is_valid();
}
inline bool edge_handle::is_valid() const
{
return idx.is_valid() && mesh->mHalfedges[idx.value >> 1].is_valid();
return idx.is_valid() && mesh->halfedge(idx, 0).is_valid();
}
inline bool edge_handle::is_deleted() const
{
return !idx.is_valid() || !mesh->mHalfedges[idx.value >> 1].is_valid();
return !idx.is_valid() || !mesh->halfedge(idx, 0).is_valid();
}
inline bool halfedge_handle::is_valid() const
{
return idx.is_valid() && mesh->mHalfedges[idx.value].is_valid();
return idx.is_valid() && mesh->halfedge(idx).is_valid();
}
inline bool halfedge_handle::is_deleted() const
{
return !idx.is_valid() || !mesh->mHalfedges[idx.value].is_valid();
return !idx.is_valid() || !mesh->halfedge(idx).is_valid();
}
}
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