/* ========================================
* void create_mesh(obj_file* objdata, meshdata* mesh)
* ========================================
* Parses the vertex and face data for a given object file
* and fills out a meshdata struct.
*/
void create_mesh(obj_file* objdata, meshdata* mesh) {
if(mesh == NULL || objdata == NULL) {
msg_log(LOG_ERROR, "create_mesh: Bad parameters!");
}
memset(mesh, 0, sizeof(meshdata));
parse_faces(&objdata->faces, mesh);
}
bool MEDITParser::parse(const std::string& filename) {
std::ifstream fin(filename.c_str());
if (!fin.is_open()) {
std::stringstream err_msg;
err_msg << "failed to open file \"" << filename << "\"";
throw IOError(err_msg.str());
}
bool success = true;
success &= parse_header(fin);
if (!success) {
throw IOError("Error parsing file header.");
}
const size_t LINE_SIZE = 256;
char line[LINE_SIZE];
while (!fin.eof()) {
std::string elem_type;
fin >> elem_type;
if (elem_type.size() == 0) continue;
if (elem_type[0] == '#') {
fin.getline(line, LINE_SIZE);
continue;
}
if (elem_type == "Vertices") {
success &= parse_vertices(fin);
} else if (elem_type == "Triangles") {
m_vertex_per_face = 3;
success &= parse_faces(fin);
} else if (elem_type == "Quadrilaterals") {
m_vertex_per_face = 4;
success &= parse_faces(fin);
} else if (elem_type == "Tetrahedra") {
if (m_faces.size() == 0) {
m_vertex_per_face = 3;
} else if (m_vertex_per_face != 3){
success = false;
}
m_vertex_per_voxel = 4;
success &= parse_voxels(fin);
} else if (elem_type == "Hexahedra") {
if (m_faces.size() == 0) {
m_vertex_per_face = 4;
} else if (m_vertex_per_face != 4){
success = false;
}
m_vertex_per_voxel = 8;
success &= parse_voxels(fin);
} else if (elem_type == "End") {
break;
} else {
if (elem_type != "Edges" &&
elem_type != "Corners" &&
elem_type != "RequiredVertices" &&
elem_type != "Ridges" &&
elem_type != "RequiredEdges" &&
elem_type != "Normals" &&
elem_type != "Tangents" &&
elem_type != "NormalAtVertices" &&
elem_type != "NormalAtTriangleVertices" &&
elem_type != "NormalAtQuadrilateralVertices" &&
elem_type != "TangentAtEdges" &&
elem_type != "End") {
success = false;
} else {
std::cerr << "Warning: Skipping " << elem_type
<< " field" << std::endl;
success &= skip_field(fin);
}
}
if (!success) {
std::stringstream err_msg;
err_msg << "Error parsing \"" << elem_type << "\" field in " <<
filename;
throw IOError(err_msg.str());
}
}
fin.close();
return success;
}
