///<summary>
/// Get the centroid of a Region.
///</summary>
///<param name="cur">An optional curve used to define the region.</param>
///<returns>A nullable Point3d containing the centroid of the Region.</returns>
public static _AcGe.Point3d? GetCentroid(this _AcDb.Region reg, _AcDb.Curve cur = null)
{
if (cur == null)
{
var idc = new _AcDb.DBObjectCollection();
reg.Explode(idc);
if (idc.Count == 0)
{
return(null);
}
cur = idc[0] as _AcDb.Curve;
}
if (cur == null)
{
return(null);
}
var cs = cur.GetPlane().GetCoordinateSystem();
var o = cs.Origin;
var x = cs.Xaxis;
var y = cs.Yaxis;
var a = reg.AreaProperties(ref o, ref x, ref y);
var pl = new _AcGe.Plane(o, x, y);
return(pl.EvaluatePoint(a.Centroid));
}
private _Ge.Point3d getCenter(_Db.Region reg)
{
_Db.Solid3d solid = new _Db.Solid3d();
solid.Extrude(reg, 2.0, 0.0);
_Ge.Point3d solidCentroid = solid.MassProperties.Centroid;
return(new _Ge.Point3d(solidCentroid.X, solidCentroid.Y, 0));
}
// Region extensions
///<summary>
/// Returns whether a Region contains a Point3d.
///</summary>
///<param name="pt">A points to test against the Region.</param>
///<returns>A Boolean indicating whether the Region contains
/// the point.</returns>
public static bool ContainsPoint(this _AcDb.Region reg, _AcGe.Point3d pt)
{
using (var brep = new _AcBr.Brep(reg))
{
var pc = new _AcBr.PointContainment();
using (var brepEnt = brep.GetPointContainment(pt, out pc))
{
return(pc != _AcBr.PointContainment.Outside);
}
}
}
///<summary>
/// Returns whether a Region contains a set of Point3ds.
///</summary>
///<param name="pts">An array of points to test against the Region.</param>
///<returns>A Boolean indicating whether the Region contains
/// all the points.</returns>
public static bool ContainsPoints(this _AcDb.Region reg, _AcGe.Point3d[] pts)
{
using (var brep = new _AcBr.Brep(reg))
{
foreach (var pt in pts)
{
var pc = new _AcBr.PointContainment();
using (var brepEnt = brep.GetPointContainment(pt, out pc))
{
if (pc == _AcBr.PointContainment.Outside)
{
return(false);
}
}
}
}
return(true);
}
public void run()
{
_Db.DBObjectCollection polys = getGeometry();
if (polys.Count == 0)
{
throw new DMTException("Valida tuleb polyline tüüpi objekte");
}
try
{
_Db.Region reg = createRegion(polys);
_Ge.Point3d center = getCenter(reg);
string X = center.X.ToString("G").Replace(",", ".");
string Y = center.Y.ToString("G").Replace(",", ".");
write("Centroid: " + X + "," + Y);
createBlock(center);
}
catch
{
throw new DMTException("Vigane geomeetria");
}
}
private _Db.Region createRegion(_Db.DBObjectCollection polys)
{
_Db.DBObjectCollection regions = new _Db.DBObjectCollection();
regions = _Db.Region.CreateFromCurves(polys);
double area = 0;
int index = 0;
if (regions.Count > 1)
{
for (int i = 0; i < regions.Count; i++)
{
_Db.Region cur = regions[i] as _Db.Region;
if (area < cur.Area)
{
index = i;
area = cur.Area;
}
}
}
_Db.Region bigRegion = regions[index] as _Db.Region;
for (int i = 0; i < regions.Count; i++)
{
if (i == index)
{
continue;
}
_Db.Region cur = regions[i] as _Db.Region;
bigRegion.BooleanOperation(_Db.BooleanOperationType.BoolSubtract, cur);
}
return(bigRegion);
}
