Subversion Repositories gelsvn

Rev

Rev 630 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 630 Rev 643
Line 17... Line 17...
17 
    using namespace std;
 17 
    using namespace std;
18 
    using namespace CGLA;
 18 
    using namespace CGLA;
19
19
20 
    void dual(Manifold& m)
 20 
    void dual(Manifold& m)
21 
    {
 21 
    {
- 
 
 22 
        // Create new vertices. Each face becomes a vertex whose position
22 
        // make sure every face knows its number
23 
        // is the centre of the face
23 
        int i = 0;
 24 
        int i = 0;
24
- 
 
25 
        FaceAttributeVector<int> ftouched;
 25 
        FaceAttributeVector<int> ftouched;
26 
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f, ++i)
 - 
 
27 
            ftouched[*f] = i;
 - 
 
28
- 
 
29 
        vector<Vec3d> vertices;
 26 
        vector<Vec3d> vertices;
30 
        vertices.resize(m.no_faces());
 27 
        vertices.resize(m.no_faces());
- 
 
 28 
        for(auto f : m.faces())
- 
 
 29 
            vertices[ftouched[f] = i++] = centre(m, f);
- 
 
 30
- 
 
 31 
        // Create new faces. Each vertex is a new face with N=valency of vertex
- 
 
 32 
        // edges.
31 
        vector<int> faces;
 33 
        vector<int> faces;
32 
        vector<int> indices;
 34 
        vector<int> indices;
33
- 
 
34 
        // Create new vertices. Each face becomes a vertex whose position
- 
 
35 
        // is the centre of the face
35 
        for(auto v : m.vertices())
36 
        i = 0;
 - 
 
37 
        for(FaceIDIterator f = m.faces_begin(); f != m.faces_end(); ++f, ++i)
 - 
 
38 
            vertices[i] = centre(m, *f);
 36 
            if(valency(m, v) > 2 && !(boundary(m, v)))
39
37 
            {
40 
            // Create new faces. Each vertex is a new face with N=valency of vertex
- 
 
41 
            // edges.
- 
 
42 
            for(VertexIDIterator v = m.vertices_begin(); v!= m.vertices_end(); ++v){
 - 
 
43 
                if(boundary(m, *v))
 - 
 
44 
                    continue;
 - 
 
45
- 
 
46 
                Walker w = m.walker(*v);
 - 
 
47 
                vector<int> index_tmp;
 - 
 
48 
                for(; !w.full_circle(); w = w.circulate_vertex_ccw())
 38 
                int N =circulate_vertex_ccw(m, v, [&](FaceID fid) {
49 
                    indices.push_back(ftouched[w.face()]);
 39 
                    indices.push_back(ftouched[fid]);
50
40 
                });
51 
                // Insert face valency in the face vector.
41 
                // Insert face valency in the face vector.
52 
                faces.push_back(w.no_steps());
 42 
                faces.push_back(N);
53
- 
 
54 
            }
 43 
            }
55
- 
 
56 
            // Clear the manifold before new geometry is inserted.
- 
 
57 
            m.clear();
 - 
 
58
- 
 
59 
            // And build
- 
 
60 
            m.build(    vertices.size(),
- 
 
61 
                    reinterpret_cast<double*>(&vertices[0]),
 - 
 
62 
                    faces.size(),
- 
 
63 
                    &faces[0],
 - 
 
64 
                    &indices[0]);
 - 
 
65 
        }
 - 
 
66 
    }
 - 
 
67 
 
 44
- 
 
 45 
        // Clear the manifold before new geometry is inserted.
- 
 
 46 
        m.clear();
- 
 
 47
- 
 
 48 
        // And build
- 
 
 49 
        m.build(    vertices.size(),
- 
 
 50 
                reinterpret_cast<double*>(&vertices[0]),
- 
 
 51 
                faces.size(),
- 
 
 52 
                &faces[0],
- 
 
 53 
                &indices[0]);
- 
 
 54 
    }
- 
 
 55 
}
- 
 
 56 
 
68 
Generated by GNU Enscript 1.6.6.
 57 
Generated by GNU Enscript 1.6.6.