static public void ReadPlyFile(string filePath, bool preloadIntoMemory = true)
{
{
byte[] contents = File.ReadAllBytes(filePath);
var ms = new MemoryStream(contents);
PlyFile file = new PlyFile();
file.ParseHeader(ms);
Console.WriteLine("[ply_header] Type: " + (file.IsBinaryFile() ? "binary" : "ascii"));
foreach (var comment in file.GetComments())
{
Console.WriteLine("\t[ply_header] Comment: " + comment);
}
foreach (var info in file.GetInfo())
{
Console.WriteLine("\t[ply_header] Info: " + info);
}
foreach (var element in file.GetElements())
{
Console.WriteLine("\t[ply_header] element: " + element.Name + "(" + element.Size + ")");
foreach (var p in element.Properties)
{
Console.Write("\t[ply_header] \tproperty: " + p.Name + " (type=" + PlyHelper.PropertyTable[p.PropertyType].Str + ")");
if (p.IsList)
{
Console.Write(" (list_type=" + PlyHelper.PropertyTable[p.ListType].Str + ")");
}
Console.WriteLine();
}
}
PlyData vertices = file.RequestPropertiesFromElement("vertex", new List <string> {
"x", "y", "z"
});
PlyData normals = file.RequestPropertiesFromElement("vertex", new List <string> {
"nx", "ny", "nz"
});
PlyData faces = file.RequestPropertiesFromElement("face", new List <string> {
"vertex_indices"
});
file.Read(ms);
if (vertices != null)
{
Console.WriteLine("\tRead " + vertices.Count + " total vertices");
}
if (normals != null)
{
Console.WriteLine("\tRead " + normals.Count + " total vertex normals");
}
if (faces != null)
{
Console.WriteLine("\tRead " + faces.Count + " total faces (triangles)");
}
}
}
private bool ParsePlyFile(string filepath)
{
var contents = File.ReadAllBytes(filepath);
var sizemb = contents.Length * 1e-6;
PlyFile file = new PlyFile();
var ms = new MemoryStream(contents);
bool headerResult = file.ParseHeader(ms);
// All ply files are required to have a vertex element
Dictionary <string, PlyData> vertexElement = new Dictionary <string, PlyData>();
Console.WriteLine("Testing: " + filepath + " - filetype: " + (file.IsBinaryFile() ? "binary" : "ascii"));
Assert.IsTrue(file.GetElements().Count > 0);
string likelyFacePropertyName = null;
// Extract a fat vertex structure (will likely include more than xyz)
foreach (var e in file.GetElements())
{
if (e.Name == "vertex")
{
Assert.IsTrue(e.Properties.Count > 0);
foreach (var p in e.Properties)
{
try
{
vertexElement.Add(p.Name, file.RequestPropertiesFromElement(e.Name, new List <string> {
p.Name
}));
}
catch
{
}
}
}
// Heuristic...
if (e.Name == "face" || e.Name == "tristrips")
{
for (int i = 0; i < 1; ++i)
{
likelyFacePropertyName = e.Properties[i].Name;
}
}
}
PlyData faces, tripstrip;
if (!string.IsNullOrEmpty(likelyFacePropertyName))
{
try
{
faces = file.RequestPropertiesFromElement("face", new List <string> {
likelyFacePropertyName
}, 0);
}
catch { }
try
{
tripstrip = file.RequestPropertiesFromElement("tristrips", new List <string> {
likelyFacePropertyName
}, 0);
}
catch { }
}
Stopwatch sw = new Stopwatch();
sw.Start();
file.Read(ms);
sw.Stop();
Console.WriteLine("\tparsing " + sizemb + "mb in " + sw.ElapsedMilliseconds + " ms");
foreach (var p in vertexElement)
{
Assert.IsTrue(p.Value.Count > 0);
foreach (var e in file.GetElements())
{
foreach (var prop in e.Properties)
{
if (e.Name == "vertex" && prop.Name == p.Key)
{
Assert.IsTrue(e.Size == p.Value.Count);
}
}
}
}
sw.Restart();
TranscodePlyFile(file, filepath);
sw.Stop();
Console.WriteLine("\ttranscoded in " + sw.ElapsedMilliseconds + " ms");
return(headerResult);
}
