// 由中心点、圆环半径和圆管半径创建圆环体的函数.
public static ObjectId AddTorus(Point3d cenPt, double majorRadius, double minorRadius)
{
Solid3d ent = new Solid3d();
ent.CreateTorus(majorRadius, minorRadius);
Matrix3d mt = Matrix3d.Displacement(cenPt - Point3d.Origin);
ent.TransformBy(mt);
ObjectId entId = AppendEntity(ent);
return(entId);
}
/// <summary>
/// 由中心点、圆环半径和圆管半径在UCS中创建圆环体
/// </summary>
/// <param name="cenPt">中心点</param>
/// <param name="majorRadius">圆环半径</param>
/// <param name="minorRadius">圆管半径</param>
/// <returns>返回创建的圆环体的Id</returns>
public static ObjectId AddTorus(Point3d cenPt, double majorRadius, double minorRadius)
{
Database db = HostApplicationServices.WorkingDatabase;
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
if (Math.Abs(majorRadius) < 0.00001 || minorRadius < 0.00001)
{
ed.WriteMessage("\n参数不当,创建圆锥体失败！");
return(ObjectId.Null);
}
try
{
// 创建
Solid3d ent = new Solid3d();
ent.RecordHistory = true;
ent.CreateTorus(majorRadius, minorRadius);
// 位置调整
Matrix3d mt = ed.CurrentUserCoordinateSystem;
mt = mt * Matrix3d.Displacement(cenPt - Point3d.Origin);
ent.TransformBy(mt);
ObjectId entId = ObjectId.Null;
using (Transaction tr = db.TransactionManager.StartTransaction())
{
entId = db.AddToModelSpace(ent);
tr.Commit();
}
return(entId);
}
catch
{
ed.WriteMessage("\n参数不当,创建圆锥体失败！");
return(ObjectId.Null);
}
}
protected override bool WorldDrawData(WorldDraw draw)
{
if (!base.WorldDrawData(draw))
{
return(false);
}
short origCol = draw.SubEntityTraits.Color;
if (_resizing)
{
using (Solid3d torus = new Solid3d())
{
try
{
torus.CreateTorus((_profRad + 5.0) / 10, (_profRad / 10));
if (torus != null)
{
torus.TransformBy(
Matrix3d.Displacement(
_resizeLocation - Point3d.Origin
)
);
// Draw the cursor
draw.SubEntityTraits.Color = 2; // ColorIndex;
torus.WorldDraw(draw);
}
}
catch (System.Exception ex)
{
_doc.Editor.WriteMessage(
"\nException: {0} - {1}", ex.Message, ex.InnerException
);
}
finally
{
draw.SubEntityTraits.Color = origCol;
}
}
return(true);
}
// If we're currently drawing...
if (_drawing)
{
Solid3d sol = null;
try
{
// If we have vertices that haven't yet been drawn...
if (_vertices.Count > 1 //&&
//_vertices.Count - 1 > _lastDrawnVertex
)
{
// ... generate a tube
if (GenerateTube(_profRad, _vertices, out sol))
{
// We now need to break the pipe...
// If it was created, add it to our list to draw
_created.Add(sol);
sol = null;
// Clear all but the last vertex to draw from
// next time
ClearAllButLast(_vertices, 1);
}
}
}
catch
{
// If the tube generation failed...
if (sol != null)
{
sol.Dispose();
}
// Loop, creating the most recent successful tube we can
bool succeeded = false;
int n = 1;
do
{
try
{
// Generate the previous, working tube using all
// but the last points (if it fails, one more is
// excluded per iteration, until we get a working
// tube)
GenerateTube(
_profRad, GetAllButLast(_vertices, n++), out sol
);
_created.Add(sol);
sol = null;
succeeded = true;
}
catch { }
}while (!succeeded && n < _vertices.Count);
if (succeeded)
{
ClearAllButLast(_vertices, n - 1);
if (_vertices.Count > 1)
{
try
{
// And generate a tube for the remaining vertices
GenerateTube(_profRad, _vertices, out sol);
}
catch
{
succeeded = false;
}
}
}
if (!succeeded && sol != null)
{
sol.Dispose();
sol = null;
}
}
// Draw our solid(s)
draw.SubEntityTraits.Color = ColorIndex;
foreach (DBObject obj in _created)
{
Entity ent = obj as Entity;
if (ent != null)
{
try
{
ent.WorldDraw(draw);
}
catch
{ }
}
}
if (sol != null)
{
try
{
sol.WorldDraw(draw);
}
catch
{ }
}
if (_vertices.Count > 0)
{
Point3d lastPt = _vertices[_vertices.Count - 1];
// Create a cursor sphere
using (Solid3d cursor = new Solid3d())
{
try
{
cursor.CreateTorus(_profRad + 5.0, _profRad);
if (cursor != null)
{
cursor.TransformBy(
Matrix3d.Displacement(lastPt - Point3d.Origin)
);
// Draw the cursor
draw.SubEntityTraits.Color = ColorIndex;
cursor.WorldDraw(draw);
}
}
catch { }
}
}
if (sol != null)
{
sol.Dispose();
}
}
draw.SubEntityTraits.Color = origCol;
return(true);
}
protected override bool WorldDrawData(WorldDraw draw)
{
if (!base.WorldDrawData(draw))
return false;
short origCol = draw.SubEntityTraits.Color;
if (_resizing)
{
using (Solid3d torus = new Solid3d())
{
try
{
torus.CreateTorus((_profRad + 5.0)/10, (_profRad/10));
if (torus != null)
{
torus.TransformBy(
Matrix3d.Displacement(
_resizeLocation - Point3d.Origin
)
);
// Draw the cursor
draw.SubEntityTraits.Color = 2; // ColorIndex;
torus.WorldDraw(draw);
}
}
catch (System.Exception ex)
{
_doc.Editor.WriteMessage(
"\nException: {0} - {1}", ex.Message, ex.InnerException
);
}
finally
{
draw.SubEntityTraits.Color = origCol;
}
}
return true;
}
// If we're currently drawing...
if (_drawing)
{
Solid3d sol = null;
try
{
// If we have vertices that haven't yet been drawn...
if (_vertices.Count > 1 //&&
//_vertices.Count - 1 > _lastDrawnVertex
)
{
// ... generate a tube
if (GenerateTube(_profRad, _vertices, out sol))
{
// We now need to break the pipe...
// If it was created, add it to our list to draw
_created.Add(sol);
sol = null;
// Clear all but the last vertex to draw from
// next time
ClearAllButLast(_vertices, 1);
}
}
}
catch
{
// If the tube generation failed...
if (sol != null)
{
sol.Dispose();
}
// Loop, creating the most recent successful tube we can
bool succeeded = false;
int n = 1;
do
{
try
{
// Generate the previous, working tube using all
// but the last points (if it fails, one more is
// excluded per iteration, until we get a working
// tube)
GenerateTube(
_profRad, GetAllButLast(_vertices, n++), out sol
);
_created.Add(sol);
sol = null;
succeeded = true;
}
catch { }
}
while (!succeeded && n < _vertices.Count);
if (succeeded)
{
ClearAllButLast(_vertices, n - 1);
if (_vertices.Count > 1)
{
try
{
// And generate a tube for the remaining vertices
GenerateTube(_profRad, _vertices, out sol);
}
catch
{
succeeded = false;
}
}
}
if (!succeeded && sol != null)
{
sol.Dispose();
sol = null;
}
}
// Draw our solid(s)
draw.SubEntityTraits.Color = ColorIndex;
foreach (DBObject obj in _created)
{
Entity ent = obj as Entity;
if (ent != null)
{
try
{
ent.WorldDraw(draw);
}
catch
{ }
}
}
if (sol != null)
{
try
{
sol.WorldDraw(draw);
}
catch
{ }
}
if (_vertices.Count > 0)
{
Point3d lastPt = _vertices[_vertices.Count - 1];
// Create a cursor sphere
using (Solid3d cursor = new Solid3d())
{
try
{
cursor.CreateTorus(_profRad+5.0, _profRad);
if (cursor != null)
{
cursor.TransformBy(
Matrix3d.Displacement(lastPt - Point3d.Origin)
);
// Draw the cursor
draw.SubEntityTraits.Color = ColorIndex;
cursor.WorldDraw(draw);
}
}
catch { }
}
}
if (sol != null)
{
sol.Dispose();
}
}
draw.SubEntityTraits.Color = origCol;
return true;
}
