public void IntersectionPolyline()
{
Document acDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
//第一条多段线
acDoc.Editor.WriteMessage("\n选择多段线: ");
DBObject pl = null;
//请求在图形区域选择对象
PromptSelectionResult acSSPrompt = acDoc.Editor.GetSelection();
//如果提示状态OK，表示已选择对象
if (acSSPrompt.Status == PromptStatus.OK)
{
SelectionSet acSSet = acSSPrompt.Value;
//遍历选择集内的对象
foreach (SelectedObject acSSObj in acSSet)
{
//确认返回的是合法的SelectedObject对象
if (acSSObj != null)
{
//以写打开所选对象
Entity acEnt = trans.GetObject(acSSObj.ObjectId,
OpenMode.ForWrite) as Entity;
pl = trans.GetObject(acSSObj.ObjectId,
OpenMode.ForRead);
if (acEnt != null)
{
//将对象颜色修改为绿色
acEnt.ColorIndex = 1;
}
}
}
}
//选择的等高线
acDoc.Editor.WriteMessage("\n选择相交的等高线: ");
//等高线集合
List <DBObject> obs = new List <DBObject>();
//请求在图形区域选择对象
PromptSelectionResult acSSPrompt1 = acDoc.Editor.GetSelection();
//如果提示状态OK，表示已选择对象
if (acSSPrompt1.Status == PromptStatus.OK)
{
SelectionSet acSSet = acSSPrompt1.Value;
//遍历选择集内的对象
foreach (SelectedObject acSSObj in acSSet)
{
//确认返回的是合法的SelectedObject对象
if (acSSObj != null)
{
//以写打开所选对象
Entity acEnt = trans.GetObject(acSSObj.ObjectId,
OpenMode.ForWrite) as Entity;
DBObject pl2 = trans.GetObject(acSSObj.ObjectId,
OpenMode.ForRead);
obs.Add(pl2);
if (acEnt != null)
{
//将对象颜色修改为绿色
acEnt.ColorIndex = 5;
}
}
}
}
//Point3dCollection p3ds = new Point3dCollection();
List <Point3d> p3ds = new List <Point3d>();
StringBuilder sbs = new StringBuilder();
sbs.AppendLine("X,Y,Z");
int num = 0;
//第一条多段线
Polyline f2d = pl as Polyline;
foreach (Polyline highpl in obs)
{
f2d.Elevation = highpl.Elevation;
//多段线和等高线的交点点集
Point3dCollection pds = new Point3dCollection();
f2d.IntersectWith(highpl, Intersect.OnBothOperands, pds, 0, 0);
for (int i = 0; i < pds.Count; i++)
{
p3ds.Add(pds[i]);
}
}
//按坐标排序
List <Point3d> points = p3ds.OrderBy(p => p.X).ToList();
//判断点的高程，按从高到低生成剖面
double Z1 = points[0].Z;
double Z2 = points[points.Count - 1].Z;
if (Z1 < Z2)
{
points = p3ds.OrderByDescending(p => p.X).ToList();
}
///生成剖面——————————————————
//算基准点
double x0 = points[0].X;
double y0 = points[0].Y - points[0].Z;
//剖面线点集
Point2dCollection p2c = new Point2dCollection();
//剖面线上第一个点
Point2d p2d = new Point2d(points[0].X, points[0].Y);
p2c.Add(p2d);
//累计值
List <double> dx = new List <double>();
List <double> dH = new List <double>();
for (int i = 0; i < points.Count - 1; i++)
{
dx.Add(Math.Sqrt((points[i + 1].X - points[i].X) * (points[i + 1].X - points[i].X) + (points[i + 1].Y - points[i].Y) * (points[i + 1].Y - points[i].Y)));
dH.Add(points[i + 1].Z);
}
//剖面线上的点
double sdx = x0; //dx累计值
for (int i = 0; i < dx.Count; i++)
{
sdx += dx[i];
p2c.Add(new Point2d(sdx, y0 + dH[i]));
}
///画剖面线——————————————————
Polyline ply2d = new Polyline();
ply2d.CreatePolyline(p2c);
//输出交点坐标
if (f2d != null)
{
for (int i = 0; i < points.Count; i++)
{
Point3d point = points[i];
sbs.AppendLine(point.X.ToString("F4") + "," + point.Y.ToString("F4") + "," + point.Z.ToString("F4"));
num++;
}
}
string[] vps = Regex.Split(sbs.ToString(), "\r\n");
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "文本文件|*.txt|所有文件|*.*";
if (sfd.ShowDialog() == DialogResult.OK)
{
string targetpath = sfd.FileName;
File.WriteAllLines(targetpath, vps);
}
//添加对象到模型空间
db.AddToModelSpace(ply2d);
trans.Commit();
}
}
public void OutPolyline()
{
Document acDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
//Polyline3d pl = null;
DBObject pl = null;
//请求在图形区域选择对象
PromptSelectionResult acSSPrompt = acDoc.Editor.GetSelection();
//如果提示状态OK，表示已选择对象
if (acSSPrompt.Status == PromptStatus.OK)
{
SelectionSet acSSet = acSSPrompt.Value;
//遍历选择集内的对象
foreach (SelectedObject acSSObj in acSSet)
{
//确认返回的是合法的SelectedObject对象
if (acSSObj != null)
{
//以写打开所选对象
Entity acEnt = trans.GetObject(acSSObj.ObjectId,
OpenMode.ForWrite) as Entity;
pl = trans.GetObject(acSSObj.ObjectId,
OpenMode.ForRead);
if (acEnt != null)
{
//将对象颜色修改为绿色
acEnt.ColorIndex = 1;
}
}
}
}
StringBuilder sbs = new StringBuilder();
sbs.AppendLine("X,Y,Z");
int num = 0;
Polyline3d f3d = pl as Polyline3d;
Polyline f2d = pl as Polyline;
if (f3d != null)
{
foreach (ObjectId vId in f3d)
{
//var yy = item as Point3d ;
PolylineVertex3d v3d = trans.GetObject(vId, OpenMode.ForRead) as PolylineVertex3d;
sbs.AppendLine(v3d.Position.X.ToString("F4") + "," + v3d.Position.Y.ToString("F4") + "," + v3d.Position.Z.ToString("F4"));
num++;
}
}
if (f2d != null)
{
for (int i = 0; i < f2d.NumberOfVertices; i++)
{
Point3d point = f2d.GetPoint3dAt(i);
sbs.AppendLine(point.X.ToString() + "," + point.Y.ToString() + "," + point.Z.ToString());
num++;
}
}
string[] vps = Regex.Split(sbs.ToString(), "\r\n");
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "文本文件|*.txt|所有文件|*.*";
if (sfd.ShowDialog() == DialogResult.OK)
{
string targetpath = sfd.FileName;
File.WriteAllLines(targetpath, vps);
}
//关闭事务
//var uuui=uuu.GetSplitCurves(0);
trans.Commit();
}
}
/// <summary>
/// Initialize our lines and it color
/// </summary>
/// <param name="figure"></param>
public Shape(Polyline figure)
{
Points = figure.Points;
ShapeColor = (figure.Stroke as SolidColorBrush).Color;
}