static public double Area(this IfcCurve curve)
{
//- IfcConic (abstract)
// - IfcCircle (x)
// - IfcEllipse (x)
//- IfcLine (x)
//- IfcOffsetCurve2D (Throw)
//- IfcOffsetCurve3D (Throw)
//- IfcBoundedCurve (abstract)
// - IfcBSplineCurve (abstract) (Throw)
// - IfcBezierCurve (Throw)
// - IfcRationalBezierCurve (Throw)
// - IfcTrimmedCurve (Throw)
// - IfcPolyline (x)
// - IfcCompositeCurve (Throw)
// - Ifc2DCompositeCurve (Throw)
if (curve is IfcCircle)
{
IfcCircle c = curve as IfcCircle;
return(Math.PI * Math.Pow(c.Radius, 2));
}
else if (curve is IfcEllipse)
{
IfcEllipse c = curve as IfcEllipse;
return(Math.PI * c.SemiAxis1 * c.SemiAxis2);
}
else if (curve is IfcLine)
{
return(0);
}
else if (curve is IfcOffsetCurve2D)
{
throw new NotImplementedException("Area not implemented for IfcOffsetCurve2D");
}
else if (curve is IfcOffsetCurve3D)
{
throw new NotImplementedException("Area not implemented for IfcOffsetCurve3D");
}
else if (curve is IfcBSplineCurve)
{
throw new NotImplementedException("Area not implemented for IfcBSplineCurve");
}
else if (curve is IfcTrimmedCurve)
{
throw new NotImplementedException("Area not implemented for IfcTrimmedCurve");
}
else if (curve is IfcPolyline)
{
// todo: needs testing
IfcPolyline p = curve as IfcPolyline;
if (p.Dim != 2)
{
throw new NotImplementedException("Area not implemented for 3D IfcPolyline");
}
// http://stackoverflow.com/questions/2553149/area-of-a-irregular-shape
// it assumes that the last point is NOT the same of the first one, but it tolerates the case.
double area = 0.0f;
int numVertices = p.Points.Count;
for (int i = 0; i < numVertices - 1; ++i)
{
area += p.Points[i].X * p.Points[i + 1].Y - p.Points[i + 1].X * p.Points[i].Y;
}
area += p.Points[numVertices - 1].X * p.Points[0].Y - p.Points[0].X * p.Points[numVertices - 1].Y;
area /= 2.0;
return(area);
}
else if (curve is Ifc2DCompositeCurve)
{
// these are complicated and should be solved with opencascade or some other lib
throw new NotImplementedException("Area not implemented for Ifc2DCompositeCurve");
}
else if (curve is IfcCompositeCurve)
{
// these are complicated and should be solved with opencascade or some other lib
throw new NotImplementedException("Area not implemented for IfcCompositeCurve");
}
return(double.NaN);
}
protected override void GenerateInstance(IfcBuilding building)
{
DatabaseIfc database = building.Database;
double angFactor = database.Factory.Options.AngleUnitsInRadians ? 1 : 180 / Math.PI;
building.Comments.Add("These profile curves are intentionally expressed in a more complicated manner than possible to test parameterization");
IfcMaterial material = new IfcMaterial(database, "Steel");
//-IfcBSplineCurve
//- IfcCompositeCurve
//- IfcCompositeCurveSegment
//- IfcIndexedPolyCurve
//- IfcTrimmedCurve
//- IfcPCurve ?
double root2 = Math.Sqrt(2), root2div2 = Math.Sqrt(2) / 2.0, root3 = Math.Sqrt(3), root3div2 = Math.Sqrt(3) / 2.0;
List <IfcCompositeCurveSegment> segments = new List <IfcCompositeCurveSegment>();
IfcLine line = new IfcLine(new IfcCartesianPoint(database, -1000, 1000), new IfcVector(new IfcDirection(database, 1, -1), 1000 * Math.Sqrt(2)));
IfcTrimmedCurve trimmedCurve = new IfcTrimmedCurve(line, new IfcTrimmingSelect((root2 - 1) / root2), new IfcTrimmingSelect(1 + (1 / root2)), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
IfcCircle circle = new IfcCircle(database, 1000);
trimmedCurve = new IfcTrimmedCurve(circle, new IfcTrimmingSelect(7.0 / 4 * Math.PI * angFactor), new IfcTrimmingSelect(3.0 / 4 * Math.PI * angFactor), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
string name = "SemiCircle";
IfcArbitraryClosedProfileDef profile = new IfcArbitraryClosedProfileDef(name, new IfcCompositeCurve(segments));
IfcMaterialProfileSet materialProfileSet = new IfcMaterialProfileSet(name, new IfcMaterialProfile(name, material, profile));
IfcColumnType columnType = new IfcColumnType(name, materialProfileSet, IfcColumnTypeEnum.COLUMN);
database.Context.AddDeclared(columnType);
IfcColumnStandardCase column = new IfcColumnStandardCase(building, new IfcMaterialProfileSetUsage(materialProfileSet, IfcCardinalPointReference.MID), new IfcAxis2Placement3D(new IfcCartesianPoint(database, 0, 0, 0)), 2000)
{
Name = name, RelatingType = columnType
};
//Unique ids assigned to generate constant IfcScript sample files, remove otherwise
columnType.GlobalId = "24mq0gwVr7bgEMXPmo$TrF";
column.GlobalId = "0RGc8lepr7BRF_EtHrWJ45";
columnType.ObjectTypeOf.GlobalId = "0devdSRyf3uBEQbSqWTDjo";
columnType.MaterialSelect.Associates.GlobalId = "1gdVo5TjPETPZlW8HSRupM";
column.MaterialSelect.Associates.GlobalId = "35z8gDFbb6gvrCOz$24tUJ";
database.NextObjectRecord = 100;
circle = new IfcCircle(new IfcAxis2Placement2D(new IfcCartesianPoint(database, 0, 1000))
{
RefDirection = new IfcDirection(database, -1, 0)
}, root3 * 1000);
segments = new List <IfcCompositeCurveSegment>();
trimmedCurve = new IfcTrimmedCurve(circle, new IfcTrimmingSelect(Math.PI / 3 * angFactor), new IfcTrimmingSelect(2 * Math.PI / 3 * angFactor), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
circle = new IfcCircle(new IfcAxis2Placement2D(new IfcCartesianPoint(database, -1000 * root3div2, -500))
{
RefDirection = new IfcDirection(database, 0, -1)
}, root3 * 1000);
trimmedCurve = new IfcTrimmedCurve(circle, new IfcTrimmingSelect(Math.PI / 2 * angFactor), new IfcTrimmingSelect(5 * Math.PI / 6 * angFactor), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
circle = new IfcCircle(new IfcAxis2Placement2D(new IfcCartesianPoint(database, 1000 * root3div2, -500))
{
RefDirection = new IfcDirection(database, 0, 1)
}, root3 * 1000);
trimmedCurve = new IfcTrimmedCurve(circle, new IfcTrimmingSelect(Math.PI / 6 * angFactor), new IfcTrimmingSelect(Math.PI / 2 * angFactor), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
name = "CurviLinearTriangle";
profile = new IfcArbitraryClosedProfileDef(name, new IfcCompositeCurve(segments));
materialProfileSet = new IfcMaterialProfileSet(name, new IfcMaterialProfile(name, material, profile));
columnType = new IfcColumnType(name, materialProfileSet, IfcColumnTypeEnum.COLUMN);
database.Context.AddDeclared(columnType);
column = new IfcColumnStandardCase(building, new IfcMaterialProfileSetUsage(materialProfileSet, IfcCardinalPointReference.MID), new IfcAxis2Placement3D(new IfcCartesianPoint(database, 2500, 0, 0)), 2000)
{
Name = name, RelatingType = columnType
};
//Unique ids assigned to generate constant IfcScript sample files, remove otherwise
columnType.GlobalId = "3N_qc_BjX1hvEgwfRvVcb_";
column.GlobalId = "0bmIILAwj8$PLHK1jcmad0";
columnType.ObjectTypeOf.GlobalId = "3tGocD1N51oOvSvHbJI_qD";
columnType.MaterialSelect.Associates.GlobalId = "1M5oofzjD3IOM43brXW6wT";
column.MaterialSelect.Associates.GlobalId = "0gnTzVmkbE9hPsJDxOUOL3";
database.NextObjectRecord = 150;
IfcEllipse ellipse = new IfcEllipse(new IfcAxis2Placement2D(database), 1000, 500);
segments = new List <IfcCompositeCurveSegment>();
trimmedCurve = new IfcTrimmedCurve(ellipse, new IfcTrimmingSelect(0), new IfcTrimmingSelect(Math.PI / 4 * angFactor), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
double x = root2div2, y = 0.5 * root2div2, len = Math.Sqrt(0.5 + Math.Pow(y, 2));
line = new IfcLine(new IfcCartesianPoint(database, 0, 0), new IfcVector(new IfcDirection(database, x / len, y / len), 1));
trimmedCurve = new IfcTrimmedCurve(line, new IfcTrimmingSelect(0), new IfcTrimmingSelect(len * 1000), false, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
line = new IfcLine(new IfcCartesianPoint(database, 0, 0), new IfcVector(new IfcDirection(database, 1, 0), 1));
trimmedCurve = new IfcTrimmedCurve(line, new IfcTrimmingSelect(0), new IfcTrimmingSelect(1000), true, IfcTrimmingPreference.PARAMETER);
segments.Add(new IfcCompositeCurveSegment(IfcTransitionCode.CONTINUOUS, true, trimmedCurve));
name = "PartialEllipse";
profile = new IfcArbitraryClosedProfileDef(name, new IfcCompositeCurve(segments));
materialProfileSet = new IfcMaterialProfileSet(name, new IfcMaterialProfile(name, material, profile));
columnType = new IfcColumnType(name, materialProfileSet, IfcColumnTypeEnum.COLUMN);
database.Context.AddDeclared(columnType);
column = new IfcColumnStandardCase(building, new IfcMaterialProfileSetUsage(materialProfileSet, IfcCardinalPointReference.MID), new IfcAxis2Placement3D(new IfcCartesianPoint(database, 5000, 0, 0)), 2000)
{
Name = name, RelatingType = columnType
};
//Unique ids assigned to generate constant IfcScript sample files, remove otherwise
columnType.GlobalId = "0dtemVu1P2682BcO3CPWAy";
column.GlobalId = "1JCvykjKH71R7_uck4n6hN";
columnType.ObjectTypeOf.GlobalId = "0rNx6sqCH2mOt1cWOT6zSU";
columnType.MaterialSelect.Associates.GlobalId = "2OfhB1Dcz2cAdV$CDh9PHV";
column.MaterialSelect.Associates.GlobalId = "3bTNkVsf9099xrALHA6WhF";
}
private static ICurve getICurveFromIfcCurve(IfcCurve ifcCurve, ViewportLayout viewportLayout1 = null, Transformation entityTrs = null)
{
ICurve result = null;
if (ifcCurve is IfcConic)
{
IfcConic ifcConic = (IfcConic)ifcCurve;
Plane pln = getPlaneFromPosition((IfcPlacement)ifcConic.Position);
if (ifcConic is IfcCircle)
{
IfcCircle ifcCircle = (IfcCircle)ifcCurve;
Circle circle = new Circle(pln, ifcCircle.Radius);
result = circle;
}
else
{
IfcEllipse ifcEllipse = (IfcEllipse)ifcConic;
Ellipse ellipse = new Ellipse(pln, pln.Origin, ifcEllipse.SemiAxis1, ifcEllipse.SemiAxis2);
result = ellipse;
}
}
else if (ifcCurve is IfcPolyline)
{
IfcPolyline p = (IfcPolyline)ifcCurve;
Point3D[] points = new Point3D[p.Points.Count];
for (int i = 0; i < p.Points.Count; i++)
{
points[i] = getPoint3DFromIfcCartesianPoint(p.Points[i]);
}
LinearPath lp = new LinearPath(points);
result = lp;
}
else if (ifcCurve is IfcCompositeCurve) // verificare sense e transition
{
IfcCompositeCurve cc = (IfcCompositeCurve)ifcCurve;
result = new CompositeCurve();
foreach (IfcCompositeCurveSegment ccSegment in cc.Segments)
{
ICurve segment = getICurveFromIfcCurve(ccSegment.ParentCurve, viewportLayout1, entityTrs);
if (segment != null)
{
((CompositeCurve)result).CurveList.Add(segment);
}
else
{
result = null;
break;
}
}
}
else if (ifcCurve is IfcTrimmedCurve)
{
IfcTrimmedCurve tc = (IfcTrimmedCurve)ifcCurve;
ICurve basisCurve = getICurveFromIfcCurve(tc.BasisCurve, viewportLayout1, entityTrs);
if (basisCurve != null)
{
ICurve trimCurve = null;
if (tc.MasterRepresentation == IfcTrimmingPreference.PARAMETER)
{
double startParam = tc.Trim1.IfcParameterValue * Math.PI / 180;
double endParam = tc.Trim2.IfcParameterValue * Math.PI / 180;
if (tc.SenseAgreement)
{
if (startParam > endParam)
{
startParam = startParam - Math.PI * 2;
}
basisCurve.SubCurve(startParam, endParam, out trimCurve);
}
else
{
if (endParam > startParam)
{
endParam = endParam - Math.PI * 2;
}
basisCurve.SubCurve(endParam, startParam, out trimCurve);
trimCurve.Reverse();
}
result = trimCurve; //new CompositeCurve(trimCurve);
}
else if (tc.MasterRepresentation == IfcTrimmingPreference.CARTESIAN)
{
debug += "IfcTrimmed cartesianPoint not supported: \n";
}
else
{
debug += "IfcTrimmed not supported: \n";
}
}
}
else
{
if (!debug.Contains("IfcCurve not supported: " + ifcCurve.KeyWord))
{
debug += "IfcCurve not supported: " + ifcCurve.KeyWord + "\n";
}
}
return(result);
}