public override Transform Transform()
{
double tol = mDatabase == null ? 1e-5 : mDatabase.Tolerance;
IfcDistanceExpression distanceExpression = Distance;
IfcCurve curve = PlacementMeasuredAlong;
Plane plane = Plane.Unset;
plane = curve.planeAt(distanceExpression, false, tol);
if (plane.IsValid)
{
Vector3d xAxis = Vector3d.CrossProduct(plane.ZAxis, Vector3d.ZAxis);
plane = new Plane(plane.Origin, xAxis, plane.ZAxis);
if (plane.IsValid)
{
IfcOrientationExpression orientationExpression = Orientation;
if (orientationExpression != null)
{
Vector3d x = orientationExpression.LateralAxisDirection.Vector3d, z = orientationExpression.VerticalAxisDirection.Vector3d;
Vector3d y = Vector3d.CrossProduct(z, x);
plane = new Plane(plane.Origin, x, y);
}
return(Rhino.Geometry.Transform.ChangeBasis(plane, Plane.WorldXY));
}
}
if (CartesianPosition != null)
{
return(CartesianPosition.Transform());
}
return(Rhino.Geometry.Transform.Unset);
}
public IfcLinearSpanPlacement(IfcCurve placementMeasuredAlong, IfcDistanceExpression distance, double span)
: base(placementMeasuredAlong, distance)
{
Span = span;
}
public IfcLinearPlacementWithInclination(IfcCurve placementMeasuredAlong, IfcDistanceExpression distance, IfcAxisLateralInclination inclinating)
: base(placementMeasuredAlong, distance)
{
Inclinating = inclinating;
}
public IfcLinearPlacement(IfcCurve placementMeasuredAlong, IfcDistanceExpression distance)
: base(placementMeasuredAlong.Database)
{
PlacementMeasuredAlong = placementMeasuredAlong;
Distance = distance;
}
internal virtual Plane planeAt(IfcDistanceExpression distanceExpression, bool vertical, double tol)
{
throw new Exception("PlaneAt DistanceExpression not implemented for " + this.StepClassName);
}