private void TransformPlacements()
{
var toRemove = new List <IfcLocalPlacement>();
foreach (var alignment in _alignments)
{
var segments = alignment.Segments.ToList();
foreach (var element in alignment.Elements)
{
// only transform local placements
var lPlacement = element.ObjectPlacement as IfcLocalPlacement;
if (lPlacement == null)
{
continue;
}
// get placement aggregated to the level of site (excluding site)
var matrix = GetMatrixRelativeToSite(element);
var position = matrix.Transform(new XbimPoint3D(0, 0, 0));
var intersection = GetIntersection2D(segments, position);
if (intersection == null)
{
Log.Warning($"Object placement for {element} could not be created because intersection was not found.");
continue;
}
// invert the matrix for the directions
matrix.Invert();
var vertDir = matrix.Transform(new XbimVector3D(0, 0, 1)).Normalized();
var xDir = matrix.Transform(new XbimVector3D(1, 0, 0)).Normalized();
_model.Delete(element.ObjectPlacement);
element.ObjectPlacement = i.New <IfcLinearPlacement>(lp =>
{
lp.Distance = i.New <IfcDistanceExpression>(d =>
{
d.AlongHorizontal = true;
d.OffsetVertical = position.Z;
d.DistanceAlong = intersection.DistanceAlong;
d.OffsetLateral = intersection.OffsetLateral;
});
lp.PlacementRelTo = SitePlacement;
lp.PlacementMeasuredAlong = alignment.Alignment.Axis;
lp.Orientation = i.New <IfcOrientationExpression>(o =>
{
o.VerticalAxisDirection = i.New <IfcDirection>(d => d.SetXYZ(vertDir.X, vertDir.Y, vertDir.Z));
o.LateralAxisDirection = i.New <IfcDirection>(d => d.SetXYZ(xDir.X, xDir.Y, xDir.Z));
});
});
toRemove.Add(lPlacement);
}
}
// remove unused local placements from the model
if (toRemove.Any())
{
_model.Delete(toRemove);
}
}
