/// <summary>
/// Tạo và trả về mặt cắt cho đối tượng tường đang xét
/// </summary>
/// <param name="linkedDoc">Document chứa đối tượng tường đang xét</param>
/// <param name="doc">Document liên kết</param>
/// <param name="id">Địa chỉ Id của đối tượng tường đang xét</param>
/// <param name="viewName">Tên của mặt cắt trả về</param>
/// <param name="offset">Giá trị offset từ biên đối tượng tường</param>
/// <returns></returns>
public static ViewSection CreateWallSection(Document linkedDoc, Document doc, ElementId id, string viewName, double offset)
{
Element e = linkedDoc.GetElement(id);
if (!(e is Wall))
{
throw new Exception("Element is not a wall!");
}
Wall wall = (Wall)e;
Line line = (wall.Location as LocationCurve).Curve as Line;
ViewFamilyType vft = new FilteredElementCollector(doc).OfClass(typeof(ViewFamilyType)).Cast <ViewFamilyType>().FirstOrDefault <ViewFamilyType>(x => ViewFamily.Section == x.ViewFamily);
XYZ p1 = line.GetEndPoint(0), p2 = line.GetEndPoint(1);
List <XYZ> ps = new List <XYZ> {
p1, p2
}; ps.Sort(new ZYXComparer());
p1 = ps[0]; p2 = ps[1];
BoundingBoxXYZ bb = wall.get_BoundingBox(null);
double minZ = bb.Min.Z, maxZ = bb.Max.Z;
double l = GeomUtil.GetLength(GeomUtil.SubXYZ(p2, p1));
double h = maxZ - minZ;
double w = wall.WallType.Width;
XYZ min = new XYZ(-l / 2 - offset, minZ - offset, -w - offset);
XYZ max = new XYZ(l / 2 + offset, maxZ + offset, w + offset);
Transform tf = Transform.Identity;
tf.Origin = (p1 + p2) / 2;
tf.BasisX = GeomUtil.UnitVector(p1 - p2);
tf.BasisY = XYZ.BasisZ;
tf.BasisZ = GeomUtil.CrossMatrix(tf.BasisX, tf.BasisY);
BoundingBoxXYZ sectionBox = new BoundingBoxXYZ()
{
Transform = tf, Min = min, Max = max
};
ViewSection vs = ViewSection.CreateSection(doc, vft.Id, sectionBox);
XYZ wallDir = GeomUtil.UnitVector(p2 - p1);
XYZ upDir = XYZ.BasisZ;
XYZ viewDir = GeomUtil.CrossMatrix(wallDir, upDir);
min = GeomUtil.OffsetPoint(GeomUtil.OffsetPoint(p1, -wallDir, offset), -viewDir, offset);
min = new XYZ(min.X, min.Y, minZ - offset);
max = GeomUtil.OffsetPoint(GeomUtil.OffsetPoint(p2, wallDir, offset), viewDir, offset);
max = new XYZ(max.X, max.Y, maxZ + offset);
tf = vs.get_BoundingBox(null).Transform.Inverse;
max = tf.OfPoint(max);
min = tf.OfPoint(min);
double maxx = 0, maxy = 0, maxz = 0, minx = 0, miny = 0, minz = 0;
if (max.Z > min.Z)
{
maxz = max.Z;
minz = min.Z;
}
else
{
maxz = min.Z;
minz = max.Z;
}
if (Math.Round(max.X, 4) == Math.Round(min.X, 4))
{
maxx = max.X;
minx = minz;
}
else if (max.X > min.X)
{
maxx = max.X;
minx = min.X;
}
else
{
maxx = min.X;
minx = max.X;
}
if (Math.Round(max.Y, 4) == Math.Round(min.Y, 4))
{
maxy = max.Y;
miny = minz;
}
else if (max.Y > min.Y)
{
maxy = max.Y;
miny = min.Y;
}
else
{
maxy = min.Y;
miny = max.Y;
}
BoundingBoxXYZ sectionView = new BoundingBoxXYZ();
sectionView.Max = new XYZ(maxx, maxy, maxz);
sectionView.Min = new XYZ(minx, miny, minz);
vs.get_Parameter(BuiltInParameter.VIEWER_VOLUME_OF_INTEREST_CROP).Set(ElementId.InvalidElementId);
vs.get_Parameter(BuiltInParameter.VIEWER_BOUND_FAR_CLIPPING).Set(0);
vs.CropBoxActive = true;
vs.CropBoxVisible = true;
doc.Regenerate();
vs.CropBox = sectionView;
vs.Name = viewName;
return(vs);
}