internal void AddShape(IGeometryStoreReader geomReader, XbimShapeInstance shapeInstance, CoordinatesMode mode)
{
// XbimMatrix3D modelTransform = XbimMatrix3D.Identity;
IXbimShapeGeometryData shapeGeom = geomReader.ShapeGeometry(shapeInstance.ShapeGeometryLabel);
if (shapeGeom.Format != (byte)XbimGeometryType.PolyhedronBinary)
{
return;
}
// var transform = XbimMatrix3D.Multiply(, modelTransform);
if (mode == CoordinatesMode.IncludeShapeTransform)
{
AddMesh(shapeGeom.ShapeData, shapeInstance.Transformation);
}
else
{
AddMesh(shapeGeom.ShapeData);
}
}
/// <summary>
/// 获取几何数据
/// </summary>
/// <param name="model"></param>
/// <param name="shapeInstances"></param>
/// <param name="geomReader"></param>
/// <param name="materialsByStyleId"></param>
public static void GetIFCPointFaceMaterial(IModel model, IEnumerable <XbimShapeInstance> shapeInstances, IGeometryStoreReader geomReader, Dictionary <int, WpfMaterial> materialsByStyleId)
{
if (shapeInstances != null)
{
int index = 0;
//string jsonString = "";
StringBuilder jsonString = new StringBuilder();
foreach (var shapeInstance in shapeInstances)
{
//string faces_json = "";
StringBuilder faces_json = new StringBuilder();
string point_json = "";
//globalId
var productId = shapeInstance.IfcProductLabel;
IIfcProduct product = model.Instances[productId] as IIfcProduct;
var globalId = product.GlobalId;
//获取该实例的材质信息
var styleId = shapeInstance.StyleLabel > 0
? shapeInstance.StyleLabel
: shapeInstance.IfcTypeId * -1;
var materialsByStyle = materialsByStyleId[styleId];
//var isTransparent = materialsByStyle.IsTransparent.ToString().ToLower();//是否透明
var materialsItem = materialsByStyle.Description.Split(' ');//材质描述
string materialString = "";
for (int i = 0; i < materialsItem.Length; i++)
{
if (i == 1 || i == 2 || i == 3 || i == 4)
{
materialString += ",\"" + materialsItem[i].Replace(":", "\":") + "";
}
}
if (materialString.Length > 0)
{
materialString = materialString.Substring(1).ToString();
}
//求单个模型4向矩阵信息
var transfor = shapeInstance.Transformation;
string matrixA = transfor.M11.ToString() + "," + transfor.M12.ToString() + "," + transfor.M13.ToString() + "," + transfor.M14.ToString() + ",";
string matrixB = transfor.M21.ToString() + "," + transfor.M22.ToString() + "," + transfor.M23.ToString() + "," + transfor.M24.ToString() + ",";
string matrixC = transfor.M31.ToString() + "," + transfor.M32.ToString() + "," + transfor.M33.ToString() + "," + transfor.M34.ToString() + ",";
string matrixXYZ = transfor.OffsetX.ToString() + "," + transfor.OffsetY.ToString() + "," + transfor.OffsetZ.ToString() + ",";
string matrixD = transfor.M44.ToString();
//拼接4向矩阵数据
string matrixString = matrixA + matrixB + matrixC + matrixXYZ + matrixD;
var matrixItem = matrixString.Split(',');//字符串数组
//添加每个模型的position数据
double[] position = new double[3];
//转换成Int数组
double[] intItem = new double[16];
for (int i = 0; i < matrixItem.Length; i++)
{
intItem[i] = Convert.ToDouble(matrixItem[i]);
}
position[0] = intItem[12];
position[1] = intItem[13];
position[2] = intItem[14];
string matrix4 = JsonConvert.SerializeObject(intItem);
string positionString = JsonConvert.SerializeObject(position);
IXbimShapeGeometryData geometrya = geomReader.ShapeGeometry(shapeInstance.ShapeGeometryLabel);
var data = ((IXbimShapeGeometryData)geometrya).ShapeData;
using (var stream = new MemoryStream(data))
{
using (var reader = new BinaryReader(stream))
{
var mesh = reader.ReadShapeTriangulation();
//查找模型所有的面
List <XbimFaceTriangulation> Faces = mesh.Faces as List <XbimFaceTriangulation>;
if (Faces.Count > 0)
{
foreach (var item in Faces)
{
faces_json.Append(",{");
faces_json.Append("\"IsPlanar\":" + item.IsPlanar.ToString().ToLower());
faces_json.Append(",\"TriangleCount\":" + item.TriangleCount);
faces_json.Append(",\"NormalCount\":" + 1);
//faces_json.Append(",\"NormalCount\":" + item.NormalCount);
faces_json.Append(",\"Indices\":" + JsonConvert.SerializeObject(item.Indices));
faces_json.Append(",\"Normals\":[");
var normals = item.Normals;
//normal由于重复暂时只取一个，能极大减小数据量
faces_json.Append("{\"X\":" + normals[0].Normal.X + ",\"Y\":" + normals[0].Normal.Y + ",\"Z\":" + normals[0].Normal.Z
+ ",\"Length\":" + normals[0].Normal.Length + ",\"Modulus\":" + normals[0].Normal.Modulus
+ ",\"U\":" + normals[0].U + ",\"V\":" + normals[0].V + "}");
faces_json.Append("]}");
}
}
//faces_json = JsonConvert.SerializeObject(Faces);
//查找模型所有的点坐标
List <XbimPoint3D> Point = mesh.Vertices as List <XbimPoint3D>;
point_json = JsonConvert.SerializeObject(Point);
//将模型数据转换成json格式，保存至xxx.json文件
if (index != 0)
{
jsonString.Append(",");
}
jsonString.Append("{\"ObjectID\":\"" + globalId + "\",\"Position\":" + positionString + ",\"Matrix4\":" + matrix4 + ",\"Faces\":[" + faces_json.ToString().Substring(1) + "],\"Points\":" + point_json + ",\"Material\":{" + materialString + "}}");
//jsonString += ",{\"ObjectID\":\"" + globalId + "\",\"Matrix4\":" + matrix4 + ",\"Faces\":[" + faces_json.Substring(1) + "],\"Points\":" + point_json + ",\"Material\":{\"IsTransparent\":" + isTransparent + "," + materialString + "}}";
index++;
}
}
}
if (jsonString.Length > 0)
{
string jsonObject = "{\"ID\":\"" + GuidTo16String() + "\",\"Name\":\"" + IfcFileName + "\",\"Position\":" + JsonConvert.SerializeObject(namePosition[IfcFileName]) + ",\"Geometry\":[";
jsonObject += jsonString.ToString();
//jsonObject += jsonString.ToString().Substring(1).ToString();
jsonObject += "]}";
if (jsonObject.Length > 2)
{
string fileNewName = filePath.Replace(".ifc", "") + "_M.json";
byte[] myByte = System.Text.Encoding.UTF8.GetBytes(jsonObject);
using (FileStream fs = new FileStream(fileNewName, FileMode.Create))
{
fs.Write(myByte, 0, myByte.Length);
}
}
}
}
}