/// <summary>
/// Create an IFCElementarySurface object from a handle of type IfcElementarySurface.
/// </summary>
/// <param name="ifcElementarySurface">The IFC handle.</param>
/// <returns>The IFCElementarySurface object.</returns>
public static IFCElementarySurface ProcessIFCElementarySurface(IFCAnyHandle ifcElementarySurface)
{
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcElementarySurface))
{
Importer.TheLog.LogNullError(IFCEntityType.IfcElementarySurface);
return(null);
}
IFCEntity elementarySurface;
if (IFCImportFile.TheFile.EntityMap.TryGetValue(ifcElementarySurface.StepId, out elementarySurface))
{
return(elementarySurface as IFCElementarySurface);
}
if (IFCAnyHandleUtil.IsValidSubTypeOf(ifcElementarySurface, IFCEntityType.IfcPlane))
{
return(IFCPlane.ProcessIFCPlane(ifcElementarySurface));
}
if (IFCAnyHandleUtil.IsValidSubTypeOf(ifcElementarySurface, IFCEntityType.IfcCylindricalSurface))
{
return(IFCCylindricalSurface.ProcessIfcCylindricalSurface(ifcElementarySurface));
}
Importer.TheLog.LogUnhandledSubTypeError(ifcElementarySurface, IFCEntityType.IfcElementarySurface, true);
return(null);
}
/// <summary>
/// In case of a Boolean operation failure, provide a recommended direction to shift the geometry in for a second attempt.
/// </summary>
/// <param name="lcs">The local transform for this entity.</param>
/// <returns>An XYZ representing a unit direction vector, or null if no direction is suggested.</returns>
/// <remarks>If the 2nd attempt fails, a third attempt will be done with a shift in the opposite direction.</remarks>
public XYZ GetSuggestedShiftDirection(Transform lcs)
{
IFCPlane ifcPlane = BaseSurface as IFCPlane;
Plane plane = (ifcPlane != null) ? ifcPlane.Plane : null;
XYZ untransformedNorm = (plane != null) ? plane.Normal : null;
return((lcs == null) ? untransformedNorm : lcs.OfVector(untransformedNorm));
}
/// <summary>
/// Create an IFCPlane object from a handle of type ifcPlane.
/// </summary>
/// <param name="ifcPlane">The IFC handle.</param>
/// <returns>The IFCPlane object.</returns>
public static IFCPlane ProcessIFCPlane(IFCAnyHandle ifcPlane)
{
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcPlane))
{
Importer.TheLog.LogNullError(IFCEntityType.IfcPlane);
return null;
}
IFCEntity plane;
if (!IFCImportFile.TheFile.EntityMap.TryGetValue(ifcPlane.StepId, out plane))
plane = new IFCPlane(ifcPlane);
return plane as IFCPlane;
}
/// <summary>
/// Create an IFCPlane object from a handle of type ifcPlane.
/// </summary>
/// <param name="ifcPlane">The IFC handle.</param>
/// <returns>The IFCPlane object.</returns>
public static IFCPlane ProcessIFCPlane(IFCAnyHandle ifcPlane)
{
if (IFCAnyHandleUtil.IsNullOrHasNoValue(ifcPlane))
{
Importer.TheLog.LogNullError(IFCEntityType.IfcPlane);
return(null);
}
IFCEntity plane;
if (!IFCImportFile.TheFile.EntityMap.TryGetValue(ifcPlane.StepId, out plane))
{
plane = new IFCPlane(ifcPlane);
}
return(plane as IFCPlane);
}
/// <summary>
/// Create geometry for an IfcHalfSpaceSolid.
/// </summary>
/// <param name="shapeEditScope">The shape edit scope.</param>
/// <param name="lcs">Local coordinate system for the geometry, without scale.</param>
/// <param name="scaledLcs">Local coordinate system for the geometry, including scale, potentially non-uniform.</param>
/// <param name="guid">The guid of an element for which represntation is being created.</param>
/// <returns>A list containing one geometry for the IfcHalfSpaceSolid.</returns>
protected virtual IList <GeometryObject> CreateGeometryInternal(
IFCImportShapeEditScope shapeEditScope, Transform unscaledLcs, Transform scaledLcs, string guid)
{
IFCPlane ifcPlane = BaseSurface as IFCPlane;
Plane plane = ifcPlane.Plane;
XYZ origin = plane.Origin;
XYZ xVec = plane.XVec;
XYZ yVec = plane.YVec;
// Set some huge boundaries for now.
const double largeCoordinateValue = 100000;
XYZ[] corners = new XYZ[4] {
unscaledLcs.OfPoint((xVec * -largeCoordinateValue) + (yVec * -largeCoordinateValue) + origin),
unscaledLcs.OfPoint((xVec * largeCoordinateValue) + (yVec * -largeCoordinateValue) + origin),
unscaledLcs.OfPoint((xVec * largeCoordinateValue) + (yVec * largeCoordinateValue) + origin),
unscaledLcs.OfPoint((xVec * -largeCoordinateValue) + (yVec * largeCoordinateValue) + origin)
};
IList <CurveLoop> loops = new List <CurveLoop>();
CurveLoop loop = new CurveLoop();
for (int ii = 0; ii < 4; ii++)
{
if (AgreementFlag)
{
loop.Append(Line.CreateBound(corners[(5 - ii) % 4], corners[(4 - ii) % 4]));
}
else
{
loop.Append(Line.CreateBound(corners[ii], corners[(ii + 1) % 4]));
}
}
loops.Add(loop);
XYZ normal = unscaledLcs.OfVector(AgreementFlag ? -plane.Normal : plane.Normal);
SolidOptions solidOptions = new SolidOptions(GetMaterialElementId(shapeEditScope), shapeEditScope.GraphicsStyleId);
Solid baseSolid = GeometryCreationUtilities.CreateExtrusionGeometry(loops, normal, largeCoordinateValue, solidOptions);
if (BaseBoundingCurve != null)
{
CurveLoop polygonalBoundary = BaseBoundingCurve.CurveLoop;
Transform unscaledTotalTransform = unscaledLcs.Multiply(BaseBoundingCurveTransform);
Transform scaledTotalTransform = scaledLcs.Multiply(BaseBoundingCurveTransform);
// Make sure this bounding polygon extends below base of half-space soild.
Transform moveBaseTransform = Transform.Identity;
moveBaseTransform.Origin = new XYZ(0, 0, -largeCoordinateValue);
unscaledTotalTransform = unscaledTotalTransform.Multiply(moveBaseTransform);
scaledTotalTransform = scaledTotalTransform.Multiply(moveBaseTransform);
CurveLoop transformedPolygonalBoundary = IFCGeometryUtil.CreateTransformed(polygonalBoundary, Id, unscaledTotalTransform, scaledTotalTransform);
IList <CurveLoop> boundingLoops = new List <CurveLoop>();
boundingLoops.Add(transformedPolygonalBoundary);
Solid boundingSolid = GeometryCreationUtilities.CreateExtrusionGeometry(boundingLoops, unscaledTotalTransform.BasisZ, 2.0 * largeCoordinateValue,
solidOptions);
baseSolid = IFCGeometryUtil.ExecuteSafeBooleanOperation(Id, BaseBoundingCurve.Id, baseSolid, boundingSolid, BooleanOperationsType.Intersect, null);
}
IList <GeometryObject> returnList = new List <GeometryObject>();
returnList.Add(baseSolid);
return(returnList);
}
