| 11 | using namespace PyMesh; |
| 12 | |
| 13 | bool MEDITParser::parse(const std::string& filename) { |
| 14 | std::ifstream fin(filename.c_str()); |
| 15 | if (!fin.is_open()) { |
| 16 | std::stringstream err_msg; |
| 17 | err_msg << "failed to open file \"" << filename << "\""; |
| 18 | throw IOError(err_msg.str()); |
| 19 | } |
| 20 | |
| 21 | bool success = true; |
| 22 | success &= parse_header(fin); |
| 23 | if (!success) { |
| 24 | throw IOError("Error parsing file header."); |
| 25 | } |
| 26 | |
| 27 | const size_t LINE_SIZE = 256; |
| 28 | char line[LINE_SIZE]; |
| 29 | while (!fin.eof()) { |
| 30 | std::string elem_type; |
| 31 | fin >> elem_type; |
| 32 | if (elem_type.size() == 0) continue; |
| 33 | if (elem_type[0] == '#') { |
| 34 | fin.getline(line, LINE_SIZE); |
| 35 | continue; |
| 36 | } |
| 37 | if (elem_type == "Vertices") { |
| 38 | success &= parse_vertices(fin); |
| 39 | } else if (elem_type == "Triangles") { |
| 40 | m_vertex_per_face = 3; |
| 41 | success &= parse_faces(fin); |
| 42 | } else if (elem_type == "Quadrilaterals") { |
| 43 | m_vertex_per_face = 4; |
| 44 | success &= parse_faces(fin); |
| 45 | } else if (elem_type == "Tetrahedra") { |
| 46 | if (m_faces.size() == 0) { |
| 47 | m_vertex_per_face = 3; |
| 48 | } else if (m_vertex_per_face != 3){ |
| 49 | success = false; |
| 50 | } |
| 51 | m_vertex_per_voxel = 4; |
| 52 | success &= parse_voxels(fin); |
| 53 | } else if (elem_type == "Hexahedra") { |
| 54 | if (m_faces.size() == 0) { |
| 55 | m_vertex_per_face = 4; |
| 56 | } else if (m_vertex_per_face != 4){ |
| 57 | success = false; |
| 58 | } |
| 59 | m_vertex_per_voxel = 8; |
| 60 | success &= parse_voxels(fin); |
| 61 | } else if (elem_type == "End") { |
| 62 | break; |
| 63 | } else { |
| 64 | if (elem_type != "Edges" && |
| 65 | elem_type != "Corners" && |
| 66 | elem_type != "RequiredVertices" && |
| 67 | elem_type != "Ridges" && |
| 68 | elem_type != "RequiredEdges" && |
| 69 | elem_type != "Normals" && |
| 70 | elem_type != "Tangents" && |