/// <summary>
/// 导出扁平的贴花或者叫纹理（DecalFlat）adj. (flat) 光滑均匀的；（陆地）平坦的；（水面）平静的；无坡度的；扁的；
/// </summary>
/// <param name="element"></param>
private void ExportDecalFlat(Element element)
{
ModelGeometry exportedGeometry = new ModelGeometry();
exportedGeometry.Transform = transformationStack.Peek();
GeometryElement arg_2F_0 = element.get_Geometry(Geometry_Options);
exportedGeometry.Points = new List <XYZ>(4);
using (IEnumerator <GeometryObject> enumerator = arg_2F_0.GetEnumerator())
{
while (enumerator.MoveNext())
{
Line line = (Line)enumerator.Current;
if (!(line == null))
{
exportedGeometry.Points.Add(line.Origin);
if (exportedGeometry.Points.Count >= 4)
{
break;
}
}
}
}
if (exportedGeometry.Points.Count != 4)
{
return;
}
exportedGeometry.Indices = new List <int>(6);
exportedGeometry.Indices.Add(0);
exportedGeometry.Indices.Add(2);
exportedGeometry.Indices.Add(1);
exportedGeometry.Indices.Add(0);
exportedGeometry.Indices.Add(3);
exportedGeometry.Indices.Add(2);
exportedGeometry.Uvs = new List <UV>(4);
exportedGeometry.Uvs.Add(new UV(0.0, 1.0));
exportedGeometry.Uvs.Add(new UV(1.0, 1.0));
exportedGeometry.Uvs.Add(new UV(1.0, 0.0));
exportedGeometry.Uvs.Add(new UV(0.0, 0.0));
exportedGeometry.CalculateNormals(false);
exportedGeometry.MakeDoubleSided();
int num = this.currentDecalMaterialId;
currentDecalMaterialId = num + 1;
ElementId elementId = new ElementId(num);
decalMaterialIdToDecal.Add(elementId, element);
Tuple <Document, ElementId> tuple = new Tuple <Document, ElementId>(documentStack.Peek(), elementId);
ChangeCurrentMaterial(tuple);
documentAndMaterialIdToGeometries[tuple].Add(exportedGeometry);
}
/// <summary>
/// 导出有弧度弯曲的贴花DecalCurved
/// </summary>
/// <param name="element"></param>
private void ExportDecalCurved(Element element)
{
ModelGeometry exportedGeometry = new ModelGeometry();
exportedGeometry.Transform = transformationStack.Peek();
GeometryElement expr_23 = element.get_Geometry(Geometry_Options);
Arc arc = expr_23.ToArray()[1] as Arc;
Curve arg_49_0 = expr_23.ToArray()[3] as Arc;
XYZ[] array = arc.Tessellate().ToArray <XYZ>();
XYZ[] array2 = arg_49_0.Tessellate().ToArray();
exportedGeometry.Points = new List <XYZ>(array.Length + array2.Length);
exportedGeometry.Uvs = new List <UV>(array.Length + array2.Length);
for (int i = 0; i < array.Length; i++)
{
exportedGeometry.Points.Add(array[i]);
exportedGeometry.Uvs.Add(new UV(1f - i * (1f / (array.Length - 1)), 1.0));
}
for (int j = 0; j < array2.Length; j++)
{
exportedGeometry.Points.Add(array2[j]);
exportedGeometry.Uvs.Add(new UV(j * (1f / (array.Length - 1)), 0.0));
}
exportedGeometry.Indices = new List <int>((array.Length - 1) * 6);
for (int k = 0; k < array.Length - 1; k++)
{
exportedGeometry.Indices.Add(k);
exportedGeometry.Indices.Add(k + 1);
exportedGeometry.Indices.Add(array.Length * 2 - k - 1);
exportedGeometry.Indices.Add(k + 1);
exportedGeometry.Indices.Add(array.Length * 2 - k - 2);
exportedGeometry.Indices.Add(array.Length * 2 - k - 1);
}
exportedGeometry.CalculateNormals(false);
exportedGeometry.MakeDoubleSided();
int num = this.currentDecalMaterialId;
currentDecalMaterialId = num + 1;
ElementId elementId = new ElementId(num);
decalMaterialIdToDecal.Add(elementId, element);
Tuple <Document, ElementId> tuple = new Tuple <Document, ElementId>(documentStack.Peek(), elementId);
ChangeCurrentMaterial(tuple);
documentAndMaterialIdToGeometries[tuple].Add(exportedGeometry);
}
private void ExportSolid(Solid solid)
{
SolidOrShellTessellationControls solidOrShellTessellationControls = new SolidOrShellTessellationControls
{
LevelOfDetail = userSetting.LevelOfDetail / 30.0,
Accuracy = 0.1,
MinAngleInTriangle = 0.0001,
MinExternalAngleBetweenTriangles = 1.0
};
try
{
TriangulatedSolidOrShell triangulatedSolidOrShell = SolidUtils.TessellateSolidOrShell(solid, solidOrShellTessellationControls);
int shellComponentCount = triangulatedSolidOrShell.ShellComponentCount;
for (int i = 0; i < shellComponentCount; i++)
{
TriangulatedShellComponent shellComponent = triangulatedSolidOrShell.GetShellComponent(i);
ModelGeometry exportedGeometry = new ModelGeometry
{
Transform = transformationStack.Peek(),
Points = new List <XYZ>(shellComponent.VertexCount)
};
for (int num = 0; num != shellComponent.VertexCount; num++)
{
exportedGeometry.Points.Add(shellComponent.GetVertex(num));
}
exportedGeometry.Indices = new List <int>(shellComponent.TriangleCount * 3);
for (int j = 0; j < shellComponent.TriangleCount; j++)
{
TriangleInShellComponent triangle = shellComponent.GetTriangle(j);
exportedGeometry.Indices.Add(triangle.VertexIndex0);
exportedGeometry.Indices.Add(triangle.VertexIndex1);
exportedGeometry.Indices.Add(triangle.VertexIndex2);
}
exportedGeometry.CalculateNormals(false);
exportedGeometry.CalculateUVs(true, false);
ElementId materialElementId = solid.Faces.get_Item(0).MaterialElementId;
Tuple <Document, ElementId> tuple = new Tuple <Document, ElementId>(documentStack.Peek(), materialElementId);
ChangeCurrentMaterial(tuple);
documentAndMaterialIdToGeometries[tuple].Add(exportedGeometry);
}
}
catch (Exception)
{
}
}
private void ExportSolid2(Solid solid)
{
foreach (Face face in solid.Faces)
{
if (!(face.Equals(null)))
{
Mesh mesh = face.Triangulate(userSetting.LevelOfDetail / 15.0);
if (!(mesh.Equals(null)) && !mesh.Visibility.Equals(Visibility.Invisible))
{
ModelGeometry exportedGeometry = new ModelGeometry();
// 设置坐标系
exportedGeometry.Transform = transformationStack.Peek();
exportedGeometry.Points = new List <XYZ>(mesh.Vertices);
exportedGeometry.Indices = new List <int>(mesh.NumTriangles * 3);
//指示此转换是否为保形的布尔值。指示此转换是否产生反射的布尔值。反射变换会更改坐标系的惯用性。
if (exportedGeometry.Transform.IsConformal && exportedGeometry.Transform.HasReflection)
{
for (int i = 0; i < mesh.NumTriangles; i++)
{
MeshTriangle meshTriangle = mesh.get_Triangle(i);
exportedGeometry.Indices.Add((int)meshTriangle.get_Index(0));
exportedGeometry.Indices.Add((int)meshTriangle.get_Index(2));
exportedGeometry.Indices.Add((int)meshTriangle.get_Index(1));
}
}
else
{
for (int j = 0; j < mesh.NumTriangles; j++)
{
MeshTriangle meshTriangle2 = mesh.get_Triangle(j);
exportedGeometry.Indices.Add((int)meshTriangle2.get_Index(0));
exportedGeometry.Indices.Add((int)meshTriangle2.get_Index(1));
exportedGeometry.Indices.Add((int)meshTriangle2.get_Index(2));
}
}
ModelGeometry TGeometry = exportedGeometry;
//计算模型法线
TGeometry.CalculateNormals(TGeometry.Transform.IsConformal && exportedGeometry.Transform.HasReflection);
exportedGeometry.CalculateUVs(true, false);
//判断是不是反正双面实体
if (face.IsTwoSided)
{
exportedGeometry.MakeDoubleSided();
}
//将当前元素面的材质ID放入元组中（文档，元素材质ID）
ElementId materialElementId = face.MaterialElementId;
Tuple <Document, ElementId> tuple = new Tuple <Document, ElementId>(documentStack.Peek(), materialElementId);
//加入元组索引
ChangeCurrentMaterial(tuple);
//用元组索引将模型加入到模型数据池
documentAndMaterialIdToGeometries[tuple].Add(exportedGeometry);
}
}
}
}
