public void getallgeometry()
{
Geometry3Dxml geometryFromInstance3dlist = getFromInstance3dlist();
Geometry3Dxml geometryFromReferenceRepList = getFromReferenceRepList();
this.allgeometry.MeshGeometry3DXmls = geometryFromReferenceRepList.MeshGeometry3DXmls.Concat(geometryFromInstance3dlist.MeshGeometry3DXmls).ToList <MeshGeometry3DXml>();
}
//读取ReferenceRepList（相当于装配体）中所有零部件的面片信息，将他们存放在Geometry3Dxml中的MeshGeometry3DXmls里
public Geometry3Dxml getFromReferenceRepList()
{
Geometry3Dxml result = new Geometry3Dxml();
foreach (ReferenceRepType eachReferenceRep in referencereplist)
{
foreach (MeshGeometry3DXml triangleMesh in eachReferenceRep.MeshGeometry.MeshGeometry3DXmls)
{
if (triangleMesh.Points.Count / 3 >= 3)//判断MeshGeometry3DXml中的点是否有三个，是否可以至少组成一个三角形，一堆三角形就可组成一个复杂形状的面
{
result.MeshGeometry3DXmls.Add(triangleMesh);
}
}
}
return(result);
}
public Geometry3Dxml getFromInstance3dlist()
{
Geometry3Dxml result = new Geometry3Dxml();
foreach (Instance3DType eachinstance3d in instance3dlist)
{
foreach (MeshGeometry3DXml triangleMesh in eachinstance3d.MeshGeometry.MeshGeometry3DXmls)
{
if (triangleMesh.Points.Count / 3 >= 3)//判断MeshGeometry3DXml中的点是否有三个，是否可以至少组成一个三角形，一堆三角形就可组成一个复杂形状的面
{
result.MeshGeometry3DXmls.Add(triangleMesh);
}
}
}
return(result);
}
public Geometry3Dxml Read3Drep(string fileName)
{
try
{
Geometry3Dxml geometry3Dxml = new Geometry3Dxml();
XmlReaderSettings xmlReaderSettings = new XmlReaderSettings()
{
IgnoreComments = true,
IgnoreWhitespace = true
};
XmlReader xmlReader = XmlReader.Create(fileName, xmlReaderSettings);
while (xmlReader.Read())
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name.Equals("Rep") &&
xmlReader.GetAttribute("xsi:type").Equals("PolygonalRepType")) //错误
{
MeshGeometry3DXml meshGeometry3DXml = new MeshGeometry3DXml();
xmlReader.ReadStartElement();
while (xmlReader.NodeType != XmlNodeType.EndElement || !xmlReader.Name.Equals("Rep"))
{
if (xmlReader.Name.Equals("PolygonalLOD"))
{
}
else if (xmlReader.Name.Equals("Faces"))
{
xmlReader.ReadStartElement();
while (xmlReader.NodeType != XmlNodeType.EndElement || !xmlReader.Name.Equals("Faces"))
{
if (xmlReader.Name.Equals("Face"))
{
string faceTrianglesString = xmlReader.GetAttribute("triangles");
string faceStripsString = xmlReader.GetAttribute("strips");
string faceFansString = xmlReader.GetAttribute("fans");
if (faceTrianglesString != null)
{
string[] array =
new Regex("[\\s]+").Replace(faceTrianglesString, " ").Trim().Split(' ');
for (int i = 0; i < array.Length; i++)
{
//if (i % 3 == 0)
// faces.Add(3);
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i]));
}
}
if (faceStripsString != null)
{
string[] stripsArray = faceStripsString.Split(',');
foreach (string stripString in stripsArray)
{
string[] array =
new Regex("[\\s]+").Replace(stripString, " ").Trim().Split(' ');
//faces.Add(3);
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[0]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[1]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[2]));
for (int i = 3; i < array.Length; i++)
{
//faces.Add(3);
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i - 2]));
if (i % 2 == 0) //保证面的法向正确
{
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i - 1]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i - 0]));
}
else
{
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i - 0]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i - 1]));
}
}
}
if (faceFansString != null)
{
//处理 trianglsFans
string[] fansArray = faceFansString.Split(',');
foreach (string fanString in fansArray)
{
string[] array =
new Regex("[\\s]+").Replace(fanString, " ").Trim().Split(' ');
//faces.Add(3);
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[0]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[1]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[2]));
for (int i = 3; i < array.Length; i++)
{
//faces.Add(3);
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[0]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i - 1]));
meshGeometry3DXml.TriangleIndices.Add(int.Parse(array[i]));
}
}
}
}
}
xmlReader.Skip();
}
}
else if (xmlReader.Name.Equals("VertexBuffer"))
{
xmlReader.ReadStartElement();
while (xmlReader.NodeType != XmlNodeType.EndElement ||
!xmlReader.Name.Equals("VertexBuffer"))
{
if (xmlReader.Name.Equals("Positions"))
{
string vertexString = xmlReader.ReadInnerXml();
string[] array = vertexString.Replace(",", " ").Trim().Split(' ');
for (int i = 0; i < array.Length; i++)
{
meshGeometry3DXml.Points.Add(float.Parse(array[i]));
}
}
xmlReader.Skip();
}
}
xmlReader.Skip();
}
geometry3Dxml.MeshGeometry3DXmls.Add(meshGeometry3DXml);
}
//xmlReader.Skip();
}
xmlReader.Close();
return(geometry3Dxml);
}
catch (Exception ex)
{
throw (new Exception("Parase Model3DxmlRep Error!" + ex));
}
}