shapeedit/mesh.interface at master · ibeling/shapeedit · GitHub

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class Mesh {
public:
  // Default contructor. Assignment operator/constructor
  Mesh();
  Mesh(const Mesh& m);
  Mesh& operator = (const Mesh& m);

  // Mesh::Vertex class
  struct Vertex {
    // position is 2D, and must be in the square[-1,1]x [-1,1]
    Cvec2 getPosition() const;
    Cvec3 getNormal() const;
    void setPosition(const Cvec2& p) const;
    void setNormal(const Cvec3& n) const;
    VertexIterator getIterator() const;
    int getIndex() const;
  };

  // Mesh::Face class
  struct Face {
    int getNumVertices() const;
    Cvec3 getNormal() const;
    Vertex getVertex(const int i) const;
  };

  // Mesh::Edge class
  struct Edge {
    Vertex getVertex(const int i) const;
    Face getFace(const int i) const;
  };

  // Mesh::VertexIterator
  struct VertexIterator {
    Vertex getVertex() const;
    Face getFace() const;
    VertexIterator& operator ++ ();
    bool operator == (const VertexIterator& vi) const;
    bool operator != (const VertexIterator& vi) const;
  };

  int getNumFaces() const;
  int getNumEdges() const;
  int getNumVertices() const;

  Vertex getVertex(const int i);
  Edge getEdge(const int i);
  Face getFace(const int i);

  Cvec3 getNewFaceVertex(const Face& f) const;
  Cvec3 getNewEdgeVertex(const Edge& e) const;
  Cvec3 getNewVertexVertex(const Vertex& v) const;

  void setNewFaceVertex(const Face& f, const Cvec3& p);
  void setNewEdgeVertex(const Edge& e, const Cvec3& p);
  void setNewVertexVertex(const Vertex& v, const Cvec3& p);

  void subdivide();
  void load(const char filename[]);
};


// Sample usage for VertexIterator:

for (int i = 0; i < mesh.getNumVertices(); ++i) {
  const Mesh::Vertex v = mesh.getVertex(i);

  Mesh::VertexIterator it(v.getIterator()), it0(it);
  do
  {
    [...]                                               // can use here it.getVertex(), it.getFace()
  }
  while (++it != it0);                                  // go around once the 1ring
}