//------------------------------------------------------------------------------------------------------------
public string ToString(int lIndex)
{
OBJFaceVertex lFaceVertex = m_Vertices[lIndex];
string lOutput = (lFaceVertex.m_VertexIndex + 1).ToString();
if (lFaceVertex.m_UVIndex > -1)
{
lOutput += string.Format("/{0}", (lFaceVertex.m_UVIndex + 1).ToString());
}
if (lFaceVertex.m_NormalIndex > -1)
{
lOutput += string.Format("/{0}", (lFaceVertex.m_NormalIndex + 1).ToString());
}
if (lFaceVertex.m_UV2Index > -1)
{
lOutput += string.Format("/{0}", (lFaceVertex.m_UV2Index + 1).ToString());
}
if (lFaceVertex.m_ColorIndex > -1)
{
lOutput += string.Format("/{0}", (lFaceVertex.m_ColorIndex + 1).ToString());
}
return(lOutput);
}
//------------------------------------------------------------------------------------------------------------
public static OBJData EncodeOBJ(this Mesh lMesh)
{
OBJData lData = new OBJData
{
m_Vertices = new List <Vector3>(lMesh.vertices),
m_UVs = new List <Vector2>(lMesh.uv),
m_Normals = new List <Vector3>(lMesh.normals),
m_UV2s = new List <Vector2>(lMesh.uv2),
m_Colors = new List <Color>(lMesh.colors)
};
int[] lIndices = null;
OBJGroup lGroup = null;
OBJFace lFace = null;
OBJFaceVertex lFaceVertex = null;
for (int lMCount = 0; lMCount < lMesh.subMeshCount; ++lMCount)
{
lIndices = lMesh.GetTriangles(lMCount);
lGroup = new OBJGroup(lMesh.name + "_" + lMCount.ToString());
for (int lCount = 0; lCount < lIndices.Length; lCount += 3)
{
lFace = new OBJFace();
lFaceVertex = new OBJFaceVertex();
lFaceVertex.m_VertexIndex = lData.m_Vertices.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_UVIndex = lData.m_UVs.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_NormalIndex = lData.m_Normals.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_UV2Index = lData.m_UV2s.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_ColorIndex = lData.m_Colors.Count > 0 ? lIndices[lCount] : -1;
lFace.AddVertex(lFaceVertex);
lFaceVertex = new OBJFaceVertex();
lFaceVertex.m_VertexIndex = lData.m_Vertices.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_UVIndex = lData.m_UVs.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_NormalIndex = lData.m_Normals.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_UV2Index = lData.m_UV2s.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_ColorIndex = lData.m_Colors.Count > 0 ? lIndices[lCount + 1] : -1;
lFace.AddVertex(lFaceVertex);
lFaceVertex = new OBJFaceVertex();
lFaceVertex.m_VertexIndex = lData.m_Vertices.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_UVIndex = lData.m_UVs.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_NormalIndex = lData.m_Normals.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_UV2Index = lData.m_UV2s.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_ColorIndex = lData.m_Colors.Count > 0 ? lIndices[lCount + 2] : -1;
lFace.AddVertex(lFaceVertex);
lGroup.AddFace(lFace);
}
lData.m_Groups.Add(lGroup);
}
return(lData);
}
public override bool Equals(object obj)
{
OBJFaceVertex faceVertex = (OBJFaceVertex)obj;
return(m_VertexIndex == faceVertex.m_VertexIndex &&
m_UVIndex == faceVertex.m_UVIndex &&
m_UV2Index == faceVertex.m_UV2Index &&
m_NormalIndex == faceVertex.m_NormalIndex);
}
//------------------------------------------------------------------------------------------------------------
public void ParseVertex(string lVertexString)
{
var fields = lVertexString.Split(new[] { '/' }, StringSplitOptions.None);
var lIndex = fields[0].ParseInvariantInt();
var faceVertex = new OBJFaceVertex
{
m_VertexIndex = lIndex - 1
};
if (fields.Length > 1)
{
lIndex = fields[1].Length == 0 ? 0 : fields[1].ParseInvariantInt();
faceVertex.m_UVIndex = lIndex - 1;
}
if (fields.Length > 2)
{
lIndex = fields[2].Length == 0 ? 0 : fields[2].ParseInvariantInt();
faceVertex.m_NormalIndex = lIndex - 1;
}
if (fields.Length > 3)
{
lIndex = fields[3].Length == 0 ? 0 : fields[3].ParseInvariantInt();
faceVertex.m_UV2Index = lIndex - 1;
}
if (fields.Length > 4)
{
lIndex = fields[4].Length == 0 ? 0 : fields[4].ParseInvariantInt();
faceVertex.m_ColorIndex = lIndex - 1;
}
AddVertex(faceVertex);
}
//------------------------------------------------------------------------------------------------------------
public void ParseVertex(string lVertexString)
{
var fields = lVertexString.Split(new[] { '/' }, StringSplitOptions.None);
var lIndex = fields[0].ParseInvariantInt();
var faceVertex = new OBJFaceVertex
{
m_VertexIndex = lIndex - 1
};
if (fields.Length > 1)
{
lIndex = fields[1].Length == 0 ? 0 : fields[1].ParseInvariantInt();
faceVertex.m_UVIndex = lIndex - 1;
}
if (fields.Length > 2)
{
lIndex = fields[2].Length == 0 ? 0 : fields[2].ParseInvariantInt();
faceVertex.m_NormalIndex = lIndex - 1;
}
if (fields.Length > 3)
{
lIndex = fields[3].Length == 0 ? 0 : fields[3].ParseInvariantInt();
faceVertex.m_UV2Index = lIndex - 1;
}
if (fields.Length > 4)
{
lIndex = fields[4].Length == 0 ? 0 : fields[4].ParseInvariantInt();
faceVertex.m_ColorIndex = lIndex - 1;
}
AddVertex(faceVertex);
}
//------------------------------------------------------------------------------------------------------------
public void AddVertex(OBJFaceVertex lVertex)
{
m_Vertices.Add(lVertex);
}
//------------------------------------------------------------------------------------------------------------
public static void LoadOBJ(this Mesh lMesh, OBJData lData)
{
List <Vector3> lVertices = new List <Vector3>();
List <Vector3> lNormals = new List <Vector3>();
List <Vector2> lUVs = new List <Vector2>();
List <int>[] lIndices = new List <int> [lData.m_Groups.Count];
Dictionary <OBJFaceVertex, int> lVertexIndexRemap = new Dictionary <OBJFaceVertex, int>();
bool lHasNormals = lData.m_Normals.Count > 0;
bool lHasUVs = lData.m_UVs.Count > 0;
lMesh.subMeshCount = lData.m_Groups.Count;
for (int lGCount = 0; lGCount < lData.m_Groups.Count; ++lGCount)
{
OBJGroup lGroup = lData.m_Groups[lGCount];
lIndices[lGCount] = new List <int>();
for (int lFCount = 0; lFCount < lGroup.Faces.Count; ++lFCount)
{
OBJFace lFace = lGroup.Faces[lFCount];
// Unity3d doesn't support non-triangle faces
// so we do simple fan triangulation
for (int lVCount = 1; lVCount < lFace.Count - 1; ++lVCount)
{
foreach (int i in new int[] { 0, lVCount, lVCount + 1 })
{
OBJFaceVertex lFaceVertex = lFace[i];
int lVertexIndex = -1;
if (!lVertexIndexRemap.TryGetValue(lFaceVertex, out lVertexIndex))
{
lVertexIndexRemap[lFaceVertex] = lVertices.Count;
lVertexIndex = lVertices.Count;
lVertices.Add(lData.m_Vertices[lFaceVertex.m_VertexIndex]);
if (lHasUVs)
{
lUVs.Add(lData.m_UVs[lFaceVertex.m_UVIndex]);
}
if (lHasNormals)
{
lNormals.Add(lData.m_Normals[lFaceVertex.m_NormalIndex]);
}
}
lIndices[lGCount].Add(lVertexIndex);
}
}
}
}
lMesh.triangles = new int[] { };
lMesh.vertices = lVertices.ToArray();
lMesh.uv = lUVs.ToArray();
lMesh.normals = lNormals.ToArray();
if (!lHasNormals)
{
lMesh.RecalculateNormals();
}
lMesh.RecalculateTangents();
for (int lGCount = 0; lGCount < lData.m_Groups.Count; ++lGCount)
{
lMesh.SetTriangles(lIndices[lGCount].ToArray(), lGCount);
}
}
//------------------------------------------------------------------------------------------------------------
public void AddVertex(OBJFaceVertex lVertex)
{
m_Vertices.Add(lVertex);
}
//------------------------------------------------------------------------------------------------------------
public static OBJData EncodeOBJ(this Mesh lMesh)
{
OBJData lData = new OBJData
{
m_Vertices = new List<Vector3>(lMesh.vertices),
m_UVs = new List<Vector2>(lMesh.uv),
m_Normals = new List<Vector3>(lMesh.normals),
m_UV2s = new List<Vector2>(lMesh.uv1),
m_Colors = new List<Color>(lMesh.colors)
};
int[] lIndices = null;
OBJGroup lGroup = null;
OBJFace lFace = null;
OBJFaceVertex lFaceVertex = null;
for (int lMCount = 0; lMCount < lMesh.subMeshCount; ++lMCount)
{
lIndices = lMesh.GetTriangles(lMCount);
lGroup = new OBJGroup(lMesh.name + "_" + lMCount.ToString());
for (int lCount = 0; lCount < lIndices.Length; lCount += 3)
{
lFace = new OBJFace();
lFaceVertex = new OBJFaceVertex();
lFaceVertex.m_VertexIndex = lData.m_Vertices.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_UVIndex = lData.m_UVs.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_NormalIndex = lData.m_Normals.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_UV2Index = lData.m_UV2s.Count > 0 ? lIndices[lCount] : -1;
lFaceVertex.m_ColorIndex = lData.m_Colors.Count > 0 ? lIndices[lCount] : -1;
lFace.AddVertex(lFaceVertex);
lFaceVertex = new OBJFaceVertex();
lFaceVertex.m_VertexIndex = lData.m_Vertices.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_UVIndex = lData.m_UVs.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_NormalIndex = lData.m_Normals.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_UV2Index = lData.m_UV2s.Count > 0 ? lIndices[lCount + 1] : -1;
lFaceVertex.m_ColorIndex = lData.m_Colors.Count > 0 ? lIndices[lCount + 1] : -1;
lFace.AddVertex(lFaceVertex);
lFaceVertex = new OBJFaceVertex();
lFaceVertex.m_VertexIndex = lData.m_Vertices.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_UVIndex = lData.m_UVs.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_NormalIndex = lData.m_Normals.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_UV2Index = lData.m_UV2s.Count > 0 ? lIndices[lCount + 2] : -1;
lFaceVertex.m_ColorIndex = lData.m_Colors.Count > 0 ? lIndices[lCount + 2] : -1;
lFace.AddVertex(lFaceVertex);
lGroup.AddFace(lFace);
}
lData.m_Groups.Add(lGroup);
}
return lData;
}
public override bool Equals(object obj)
{
OBJFaceVertex oBJFaceVertex = (OBJFaceVertex)obj;
return(this.m_VertexIndex == oBJFaceVertex.m_VertexIndex && this.m_UVIndex == oBJFaceVertex.m_UVIndex && this.m_UV2Index == oBJFaceVertex.m_UV2Index && this.m_NormalIndex == oBJFaceVertex.m_NormalIndex && this.m_ColorIndex == oBJFaceVertex.m_ColorIndex);
}