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多条相交直线全部打断问题！！！~~~急
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多条相交直线全部打断问题！！！~~~急
如题，将多条相交直线选中，然后全部打断，高手指点下 有什么好办法？？？最好是c#的 ，万分感谢！！！
你是要怎么处理:在焦点中把线断开?
如果你是做测绘的，可以用autodesk map
怎么个打断法？要说清楚！
//仅适用于同一平面上的直线
[commandmethod("mtest")]
public void m_test()
{
editor m_ed = autodesk.autocad.applicationservices.application.documentmanager.mdiactivedocument.editor;
database m_db = hostapplicationservices.workingdatabase;
m_ed.writemessage("\n请选择相交的直线:");
promptselectionoptions m_pso = new promptselectionoptions();
m_pso.allowduplicates = false;
selectionfilter m_sf = new selectionfilter(new typedvalue[] { new typedvalue(0, "line") });
promptselectionresult m_psr = m_ed.getselection(m_pso,m_sf);
if (m_psr.status != promptstatus.ok) return;
list<objectid> m_objids=new list<objectid>();
for (int i = 0; i < m_psr.value.count; i++) m_objids.add((objectid)(m_psr.value.getobjectids())[i]);
using (transaction m_tr = m_db.transactionmanager.starttransaction())
{
blocktablerecord m_btr = (blocktablerecord)m_tr.getobject(m_db.currentspaceid, openmode.forwrite, false);
dbobjectcollection m_newlines = new dbobjectcollection();
start:
objectid m_objid = m_objids[0];
line m_line1 = (line)m_tr.getobject(m_objid, openmode.forwrite);
list<oint3d> m_pts =new list<oint3d>();
for (int i = 1; i < m_objids.count; i++)
{
line m_line2 = (line)m_tr.getobject(m_objids, openmode.forwrite);
point3dcollection m_interpts = new point3dcollection();
m_line1.intersectwith(m_line2, intersect.onbothoperands, m_interpts, 0, 0);
if (m_interpts.count > 0)
foreach (point3d pt in m_interpts)
if (!m_line1.startpoint.equals(pt) && !m_line1.endpoint.equals(pt) && !m_pts.contains(pt))
m_pts.add(pt);
}
if (m_pts.count > 0)
{
if (m_pts.count > 1)
{
//按各点到直线起点的距离从小到大排序
m_pts.sort(delegate(point3d a, point3d b) { return a.distanceto(m_line1.startpoint).compareto(b.distanceto(m_line1.startpoint));});
}
point3dcollection m_splitepts = new point3dcollection();
foreach (point3d pt in m_pts) m_splitepts.add(pt);
m_newlines = m_line1.getsplitcurves(m_splitepts);
foreach (entity m_newline in m_newlines)
{
m_objids.add(m_btr.appendentity(m_newline));
m_tr.addnewlycreateddbobject(m_newline, true);
}
m_line1.erase();
}
m_objids.remove(m_objid);
if (m_objids.count > 1) goto start;
m_tr.commit();
}
}
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