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PlyHeader.cs
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PlyHeader.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
namespace ThreeDeeBear.Models.Ply
{
public enum PlyFaceParseMode
{
VertexCountVertexIndex // todo: see if other modes exist
}
public enum PlyFormat
{
Ascii,
BinaryBigEndian,
BinaryLittleEndian,
Unknown
}
public class PlyHeader
{
public PlyFormat Format;
public int VertexCount;
public int FaceCount;
public int XIndex;
public int YIndex;
public int ZIndex;
public int? RedIndex;
public int? GreenIndex;
public int? BlueIndex;
public int? AlphaIndex;
public PlyFaceParseMode FaceParseMode;
public List<string> RawHeader;
public PlyHeader()
{
}
public PlyHeader(List<string> headerUnparsed)
{
Format = GetFormat(headerUnparsed.FirstOrDefault(x => x.Contains("format")).Split(' ')[1]);
var elementVertexIndex = headerUnparsed.IndexOf(headerUnparsed.FirstOrDefault(x => x.Contains("element vertex")));
VertexCount = Convert.ToInt32(headerUnparsed[elementVertexIndex].Split(' ')[2]);
var elementFaceIndex = headerUnparsed.IndexOf(headerUnparsed.FirstOrDefault(x => x.Contains("element face")));
FaceCount = Convert.ToInt32(headerUnparsed[elementFaceIndex].Split(' ')[2]);
SetVertexProperties(GetProperties(headerUnparsed, elementVertexIndex));
SetFaceProperties(GetProperties(headerUnparsed, elementFaceIndex));
RawHeader = headerUnparsed;
}
private PlyFormat GetFormat(string formatLine)
{
switch (formatLine)
{
case "binary_little_endian":
return PlyFormat.BinaryLittleEndian;
case "binary_big_endian":
return PlyFormat.BinaryBigEndian;
case "ascii":
return PlyFormat.Ascii;
default:
return PlyFormat.Unknown;
}
}
private void SetVertexProperties(IList<string> properties)
{
for (int i = 0; i < properties.Count; i++)
{
var split = properties[i].Split(' ');
var propertyType = split.Last();
switch (propertyType)
{
case "x":
XIndex = i;
break;
case "y":
YIndex = i;
break;
case "z":
ZIndex = i;
break;
case "red":
RedIndex = i;
break;
case "green":
GreenIndex = i;
break;
case "blue":
BlueIndex = i;
break;
case "alpha":
AlphaIndex = i;
break;
}
}
}
private void SetFaceProperties(IList<string> properties)
{
foreach (var property in properties)
{
switch (property)
{
case "property list uchar int vertex_index":
FaceParseMode = PlyFaceParseMode.VertexCountVertexIndex;
break;
default:
Debug.LogWarning("Ply: Unknown face property, will not know how to read faces from the mesh");
break;
}
}
}
private List<string> GetProperties(IList<string> header, int elementIndex)
{
var properties = new List<string>();
for (int i = elementIndex + 1; i < header.Count; i++)
{
var property = header[i];
if (property.Contains("property"))
{
properties.Add(property);
}
else
{
break;
}
}
return properties;
}
}
}