/// <summary>
/// Adapts alignment to given IFC4 placement aggregation.
/// </summary>
/// <param name="placement">The current placement</param>
/// <param name="align">The alignment</param>
/// <returns>A modified placement</returns>
public static IfcLocalPlacement ChangeIfc4ObjectPlacementTo(this IfcLocalPlacement placement, IfcAlignReferenceAxis align, bool newAxisInstances)
{
var s = placement.Model;
var refAxis = placement.RelativePlacement as IfcAxis2Placement3D;
if (null == refAxis)
{
refAxis = s.Instances.New <IfcAxis2Placement3D>();
if (null != placement.RelativePlacement)
{
s.Logger.LogWarning($"Leaving potentially orphan instance '{placement.RelativePlacement}'");
}
}
if (!newAxisInstances && refAxis.Axis is IfcDirection d1)
{
d1.DirectionRatios.Clear();
d1.DirectionRatios.AddRange(align.ReferenceAxis.ToIfcReal4());
}
else
{
refAxis.Axis = s.NewIfcDirection <IfcDirection>(align.ReferenceAxis);
}
if (!newAxisInstances && refAxis.RefDirection is IfcDirection d2)
{
d2.DirectionRatios.Clear();
d2.DirectionRatios.AddRange(align.AlignToAxis.ToIfcReal4());
}
else
{
refAxis.RefDirection = s.NewIfcDirection <IfcDirection>(align.AlignToAxis);
}
if (!newAxisInstances && refAxis.Location is IfcCartesianPoint p1)
{
p1.Coordinates.Clear();
p1.Coordinates.AddRange(align.Offset.ToXbimVector3D().ToIfcLengthMeasure4(s.ModelFactors));
}
else
{
refAxis.Location = s.NewIfcPoint <IfcCartesianPoint>(align.Offset.ToXbimVector3D(), true);
}
placement.RelativePlacement = refAxis;
return(placement);
}
/// <summary>
/// Creates a new local placement based on alignment reference
/// </summary>
/// <param name="s">The store</param>
/// <param name="align">The aligment</param>
/// <returns>A new local placement</returns>
public static IfcLocalPlacement NewIfc4ObjectPlacementTo(this IModel s, IfcAlignReferenceAxis align)
{
var localPlacement = s.Instances.New <IfcLocalPlacement>();
return(ChangeIfc4ObjectPlacementTo(localPlacement, align, true));
}
