/// <summary>
/// Get all the parameters and store them into a list
/// </summary>
/// <param name="familyInstance">The instance of a curtain panel</param>
/// <returns>A list containing all the required parameters</returns>
private InstParameters GetParams(FamilyInstance familyInstance)
{
InstParameters iParams = new InstParameters();
Parameter L1 = familyInstance.LookupParameter("Length1");
Parameter L2 = familyInstance.LookupParameter("Length2");
Parameter L3 = familyInstance.LookupParameter("Length3");
Parameter L4 = familyInstance.LookupParameter("Length4");
Parameter A1 = familyInstance.LookupParameter("Angle1");
Parameter A2 = familyInstance.LookupParameter("Angle2");
Parameter A3 = familyInstance.LookupParameter("Angle3");
Parameter A4 = familyInstance.LookupParameter("Angle4");
if (L1 == null || L2 == null || L3 == null || L4 == null || A1 == null || A2 == null || A3 == null || A4 == null)
{
string errorstring = "Panel family: " + familyInstance.Id.IntegerValue + " '" + familyInstance.Symbol.Family.Name + "' must have instance parameters Length1, Length2, Length3, Length4, Angle1, Angle2, Angle3, and Angle4";
TaskDialog.Show("Revit", errorstring);
// throw new ArgumentException(errorstring);
}
iParams["Length1"] = L1;
iParams["Length2"] = L2;
iParams["Length3"] = L3;
iParams["Length4"] = L4;
iParams["Angle1"] = A1;
iParams["Angle2"] = A2;
iParams["Angle3"] = A3;
iParams["Angle4"] = A4;
return(iParams);
}
/// <summary>
/// Compute the length and angle data of the edges, then update the parameters with these values
/// </summary>
/// <param name="edge_ar">The edges of the curtain panel</param>
/// <param name="instParams">The parameters which records the length and angle data</param>
private void SetParams(EdgeArray edge_ar, InstParameters instParams)
{
double length4 = 0d;
double angle3 = 0d;
double angle4 = 0d;
Edge edge1 = edge_ar.get_Item(0);
Edge edge2 = edge_ar.get_Item(1);
Edge edge3 = edge_ar.get_Item(2);
double length1 = edge1.ApproximateLength;
double length2 = edge2.ApproximateLength;
double length3 = edge3.ApproximateLength;
double angle1 = AngleBetweenEdges(edge1, edge2);
double angle2 = AngleBetweenEdges(edge2, edge3);
if (edge_ar.Size == 3)
{
angle3 = AngleBetweenEdges(edge3, edge1);
}
else if (edge_ar.Size > 3)
{
Edge edge4 = edge_ar.get_Item(3);
length4 = edge4.ApproximateLength;
angle3 = AngleBetweenEdges(edge3, edge4);
angle4 = AngleBetweenEdges(edge4, edge1);
}
instParams["Length1"].Set(length1);
instParams["Length2"].Set(length2);
instParams["Length3"].Set(length3);
instParams["Length4"].Set(length4);
instParams["Angle1"].Set(angle1);
instParams["Angle2"].Set(angle2);
instParams["Angle3"].Set(angle3);
instParams["Angle4"].Set(angle4);
}
/// <summary>
/// Implement this method as an external command for Revit.
/// </summary>
/// <param name="commandData">An object that is passed to the external application
/// which contains data related to the command,
/// such as the application object and active view.</param>
/// <param name="message">A message that can be set by the external application
/// which will be displayed if a failure or cancellation is returned by
/// the external command.</param>
/// <param name="elements">A set of elements to which the external application
/// can add elements that are to be highlighted in case of failure or cancellation.</param>
/// <returns>Return the status of the external command.
/// A result of Succeeded means that the API external method functioned as expected.
/// Cancelled can be used to signify that the user cancelled the external operation
/// at some point. Failure should be returned if the application is unable to proceed with
/// the operation.</returns>
public Autodesk.Revit.UI.Result Execute(ExternalCommandData commandData, ref string message, Autodesk.Revit.DB.ElementSet elements)
{
m_app = commandData.Application.Application;
m_doc = commandData.Application.ActiveUIDocument.Document;
// step 1: get all the divided surfaces in the Revit document
List <DividedSurface> dsList = GetElements <DividedSurface>();
foreach (DividedSurface ds in dsList)
{
// step 2: get the panel instances from the divided surface
List <FamilyInstance> fiList = GetFamilyInstances(ds);
foreach (FamilyInstance inst in fiList)
{
// step 3: compute the length and angle and set them to the parameters
InstParameters instParams = GetParams(inst);
EdgeArray edges = GetEdges(inst);
SetParams(edges, instParams);
}
}
return(Autodesk.Revit.UI.Result.Succeeded);
}