public IfcLocalPlacement(IfcAxis2Placement relativePlacement, IfcObjectPlacement placementRelTo)
: this()
{
if (relativePlacement == null)
throw new ArgumentNullException("relativePlacement argument can not be null");
_relativePlacement = relativePlacement;
_placementRelTo = placementRelTo;
}
internal abstract void CopyValues(IfcObjectPlacement value);
/// <summary>
/// Builds a windows Matrix3D from an ObjectPlacement
/// Conversion fo c++ function CartesianTransform::ConvertMatrix3D from CartesianTransform.cpp
/// </summary>
/// <param name="objPlacement">IfcObjectPlacement object</param>
/// <returns>Matrix3D</returns>
protected XbimMatrix3D ConvertMatrix3D(IfcObjectPlacement objPlacement)
{
if(objPlacement is IfcLocalPlacement)
{
IfcLocalPlacement locPlacement = (IfcLocalPlacement)objPlacement;
if (locPlacement.RelativePlacement is IfcAxis2Placement3D)
{
IfcAxis2Placement3D axis3D = (IfcAxis2Placement3D)locPlacement.RelativePlacement;
XbimVector3D ucsXAxis = new XbimVector3D(axis3D.RefDirection.DirectionRatios[0], axis3D.RefDirection.DirectionRatios[1], axis3D.RefDirection.DirectionRatios[2]);
XbimVector3D ucsZAxis = new XbimVector3D(axis3D.Axis.DirectionRatios[0], axis3D.Axis.DirectionRatios[1], axis3D.Axis.DirectionRatios[2]);
ucsXAxis.Normalize();
ucsZAxis.Normalize();
XbimVector3D ucsYAxis = XbimVector3D.CrossProduct(ucsZAxis, ucsXAxis);
ucsYAxis.Normalize();
XbimPoint3D ucsCentre = axis3D.Location.XbimPoint3D();
XbimMatrix3D ucsTowcs = new XbimMatrix3D(ucsXAxis.X, ucsXAxis.Y, ucsXAxis.Z, 0,
ucsYAxis.X, ucsYAxis.Y, ucsYAxis.Z, 0,
ucsZAxis.X, ucsZAxis.Y, ucsZAxis.Z, 0,
ucsCentre.X, ucsCentre.Y, ucsCentre.Z , 1);
if (locPlacement.PlacementRelTo != null)
{
return XbimMatrix3D.Multiply(ucsTowcs, ConvertMatrix3D(locPlacement.PlacementRelTo));
}
else
return ucsTowcs;
}
else //must be 2D
{
throw new NotImplementedException("Support for Placements other than 3D not implemented");
}
}
else //probably a Grid
{
throw new NotImplementedException("Support for Placements other than Local not implemented");
}
}
internal override void CopyValues(IfcObjectPlacement value)
{
IfcLocalPlacement lp = value as IfcLocalPlacement;
PlacementRelTo = lp.PlacementRelTo;
RelativePlacement = lp.RelativePlacement;
}
public override void IfcParse(int propIndex, IPropertyValue value)
{
switch (propIndex)
{
case 0:
_placementRelTo = (IfcObjectPlacement) value.EntityVal;
break;
case 1:
_relativePlacement = (IfcAxis2Placement)value.EntityVal;
break;
default:
this.HandleUnexpectedAttribute(propIndex, value); break;
}
}
public override void IfcParse(int propIndex, IPropertyValue value)
{
switch (propIndex)
{
case 0:
case 1:
case 2:
case 3:
case 4:
base.IfcParse(propIndex, value);
break;
case 5:
_objectPlacement = (IfcObjectPlacement) value.EntityVal;
break;
case 6:
_representation = (IfcProductRepresentation) value.EntityVal;
break;
default:
this.HandleUnexpectedAttribute(propIndex, value); break;
}
}
internal override void CopyValues(IfcObjectPlacement value)
{
IfcGridPlacement gp = value as IfcGridPlacement;
PlacementLocation = gp.PlacementLocation;
PlacementRefDirection = gp.PlacementRefDirection;
}
