/// <summary>
/// Creates a simple swept solid from a list of curve loops.
/// </summary>
/// <param name="exporterIFC">The exporter.</param>
/// <param name="profileName">The profile name.</param>
/// <param name="profileCurveLoops">The profile curve loops.</param>
/// <param name="normal">The normal of the plane that the path lies on.</param>
/// <param name="directrix">The path curve.</param>
/// <returns>The swept solid handle.</returns>
public static IFCAnyHandle CreateSimpleSweptSolid(ExporterIFC exporterIFC, string profileName, IList <CurveLoop> profileCurveLoops,
XYZ normal, Curve directrix)
{
// see definition of IfcSurfaceCurveSweptAreaSolid from
// http://www.buildingsmart-tech.org/ifc/IFC2x4/rc4/html/schema/ifcgeometricmodelresource/lexical/ifcsurfacecurvesweptareasolid.htm
IFCAnyHandle simpleSweptSolidHnd = null;
if (!CanCreateSimpleSweptSolid(profileCurveLoops, normal, directrix))
{
return(simpleSweptSolidHnd);
}
bool isBound = directrix.IsBound;
double originalStartParam = isBound ? directrix.GetEndParameter(0) : 0.0;
Plane axisPlane, profilePlane;
CreateAxisAndProfileCurvePlanes(directrix, originalStartParam, out axisPlane, out profilePlane);
IList <CurveLoop> curveLoops = null;
try
{
// Check that curve loops are valid.
curveLoops = ExporterIFCUtils.ValidateCurveLoops(profileCurveLoops, profilePlane.Normal);
}
catch (Exception)
{
return(null);
}
if (curveLoops == null || curveLoops.Count == 0)
{
return(simpleSweptSolidHnd);
}
double startParam = 0.0, endParam = 1.0;
if (directrix is Arc)
{
// This effectively resets the start parameter to 0.0, and end parameter = length of curve.
if (isBound)
{
endParam = UnitUtil.ScaleAngle(MathUtil.PutInRange(directrix.GetEndParameter(1), Math.PI, 2 * Math.PI) -
MathUtil.PutInRange(originalStartParam, Math.PI, 2 * Math.PI));
}
else
{
endParam = 2.0 * Math.PI;
}
}
// Start creating IFC entities.
IFCAnyHandle sweptArea = ExtrusionExporter.CreateSweptArea(exporterIFC, profileName, curveLoops, profilePlane, profilePlane.Normal);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(sweptArea))
{
return(simpleSweptSolidHnd);
}
IFCAnyHandle curveHandle = null;
IFCAnyHandle referenceSurfaceHandle = ExtrusionExporter.CreateSurfaceOfLinearExtrusionFromCurve(exporterIFC, directrix, axisPlane, 1.0, 1.0,
out curveHandle);
// Should this be moved up? Check.
Plane scaledAxisPlane = GeometryUtil.GetScaledPlane(exporterIFC, axisPlane);
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle solidAxis = ExporterUtil.CreateAxis(file, scaledAxisPlane.Origin, scaledAxisPlane.Normal, scaledAxisPlane.XVec);
simpleSweptSolidHnd = IFCInstanceExporter.CreateSurfaceCurveSweptAreaSolid(file, sweptArea, solidAxis, curveHandle, startParam,
endParam, referenceSurfaceHandle);
return(simpleSweptSolidHnd);
}
/// <summary>
/// Creates a simple swept solid from a list of curve loops.
/// </summary>
/// <param name="exporterIFC">The exporter.</param>
/// <param name="profileName">The profile name.</param>
/// <param name="profileCurveLoops">The profile curve loops.</param>
/// <param name="normal">The normal of the plane that the path lies on.</param>
/// <param name="directrix">The path curve.</param>
/// <returns>The swept solid handle.</returns>
public static IFCAnyHandle CreateSimpleSweptSolid(ExporterIFC exporterIFC, string profileName, IList <CurveLoop> profileCurveLoops,
XYZ normal, Curve directrix)
{
// see definition of IfcSurfaceCurveSweptAreaSolid from
// http://www.buildingsmart-tech.org/ifc/IFC2x4/rc4/html/schema/ifcgeometricmodelresource/lexical/ifcsurfacecurvesweptareasolid.htm
IFCAnyHandle simpleSweptSolidHnd = null;
if (!CanCreateSimpleSweptSolid(profileCurveLoops, normal, directrix))
{
return(simpleSweptSolidHnd);
}
bool isBound = directrix.IsBound;
double originalStartParam = isBound ? directrix.GetEndParameter(0) : 0.0;
Transform axisLCS, profileLCS;
CreateAxisAndProfileCurveLCS(directrix, originalStartParam, out axisLCS, out profileLCS);
IList <CurveLoop> curveLoops = null;
try
{
// Check that curve loops are valid.
curveLoops = ExporterIFCUtils.ValidateCurveLoops(profileCurveLoops, profileLCS.BasisZ);
}
catch (Exception)
{
return(null);
}
if (curveLoops == null || curveLoops.Count == 0)
{
return(simpleSweptSolidHnd);
}
double startParam = 0.0, endParam = 1.0;
if (directrix is Arc)
{
// This effectively resets the start parameter to 0.0, and end parameter = length of curve.
if (isBound)
{
// Put the parameters in range of [0, 2*Pi]
double inRangeStarParam = (directrix.GetEndParameter(0) % (2 * Math.PI));
double inRangeEndParam = (directrix.GetEndParameter(1) % (2 * Math.PI));
// We want the angle direction is anti-clockwise (+ direction), therefore we will always start with the smaller one
if (inRangeEndParam < inRangeStarParam)
{
double tmp = inRangeStarParam;
inRangeStarParam = inRangeEndParam;
inRangeEndParam = tmp;
}
// If start param is negative, we will reset it to 0 and shift the end accordingly
if (inRangeStarParam < 0)
{
double parRange = inRangeEndParam - inRangeStarParam;
inRangeStarParam = 0.0;
inRangeEndParam = parRange;
}
endParam = UnitUtil.ScaleAngle(inRangeEndParam);
//endParam = UnitUtil.ScaleAngle(MathUtil.PutInRange(directrix.GetEndParameter(1), Math.PI, 2 * Math.PI) -
// MathUtil.PutInRange(originalStartParam, Math.PI, 2 * Math.PI));
}
else
{
endParam = 2.0 * Math.PI;
}
}
// Start creating IFC entities.
IFCAnyHandle sweptArea = ExtrusionExporter.CreateSweptArea(exporterIFC, profileName, curveLoops, profileLCS, profileLCS.BasisZ);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(sweptArea))
{
return(simpleSweptSolidHnd);
}
IFCAnyHandle curveHandle = null;
IFCAnyHandle referenceSurfaceHandle = ExtrusionExporter.CreateSurfaceOfLinearExtrusionFromCurve(exporterIFC, directrix, axisLCS, 1.0, 1.0,
out curveHandle);
// Should this be moved up? Check.
XYZ scaledOrigin = ExporterIFCUtils.TransformAndScalePoint(exporterIFC, axisLCS.Origin);
XYZ scaledXDir = ExporterIFCUtils.TransformAndScaleVector(exporterIFC, axisLCS.BasisX).Normalize();
XYZ scaledNormal = ExporterIFCUtils.TransformAndScaleVector(exporterIFC, axisLCS.BasisZ).Normalize();
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle solidAxis = ExporterUtil.CreateAxis(file, scaledOrigin, scaledNormal, scaledXDir);
simpleSweptSolidHnd = IFCInstanceExporter.CreateSurfaceCurveSweptAreaSolid(file, sweptArea, solidAxis, curveHandle, startParam,
endParam, referenceSurfaceHandle);
return(simpleSweptSolidHnd);
}
