Hi i need help coming up with a method to delete elevation views and elevation marker

allazaruszcheong_21 · ‎12-19-2023

Currently i am creating elevation views by creating elevation markers
I have 1 button to create elevation markers -> creating elevation views
I have 1 button to export the view to png/jpg

now i need a method to check if the elevation view exists, if it does, delete and create new ones,
if not exist, create new ones

private void button33_Click(object sender, EventArgs e)
// This method exports the elevation views
{
UIDocument uidoc = uiapp2.ActiveUIDocument;
Autodesk.Revit.DB.Document doc = uidoc.Document;

// Get the desktop path
string desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);

// Specify the folder and file name
string folderName = "ETTV DATA";
string filePath = Path.Combine(desktopPath, folderName);

// Create the folder if it doesn't exist
Directory.CreateDirectory(Path.Combine(desktopPath, folderName));

//Root Path
string rootPath = $@"{Environment.GetFolderPath(Environment.SpecialFolder.Desktop)}\ETTV DATA";

//Filter Elevation
List<Autodesk.Revit.DB.View> viewList = new FilteredElementCollector(doc)
.OfClass(typeof(Autodesk.Revit.DB.View))
.Cast<Autodesk.Revit.DB.View>()
.Where(x => x.ViewType.Equals(ViewType.Elevation))
.Where(x => !x.IsTemplate)
.ToList();

//Itterate Each View and Export as Image
foreach (Autodesk.Revit.DB.View view in viewList)
{

//Make Active View
uidoc.ActiveView = view;
//Export Image
PrintImage(doc, rootPath, view.Name);
}
}

public static void PrintImage(Autodesk.Revit.DB.Document doc, string rootPath, string viewName)
// This method is for the settings of the images' exported
{
// Export the image
ImageExportOptions options = new ImageExportOptions();
options.ZoomType = ZoomFitType.FitToPage;
options.PixelSize = 1080;
options.ImageResolution = ImageResolution.DPI_300;
options.HLRandWFViewsFileType = ImageFileType.PNG;
options.FilePath = $@"{rootPath}\{viewName}";
doc.ExportImage(options);
}

private ViewFamilyType GetViewFamilyType(Autodesk.Revit.DB.Document doc)
{
// Find the ViewFamilyType for Elevation views
ElementId viewFamilyTypeId = new FilteredElementCollector(doc)
.OfClass(typeof(ViewFamilyType))
.Cast<ViewFamilyType>()
.FirstOrDefault(x => x.ViewFamily == ViewFamily.Elevation)
?.Id ?? ElementId.InvalidElementId;

return doc.GetElement(viewFamilyTypeId) as ViewFamilyType;
}

private void button34_Click(object sender, EventArgs e)
//This method creates the elevation views
{
UIDocument uidoc = uiapp2.ActiveUIDocument;
Autodesk.Revit.DB.Document doc = uidoc.Document;

// Define the view directions and corresponding offsets
// Origin XYZ is 0,0,0 meaning that x, y, z
// only X and y are set as Z is upward/downward direction
// CropBox editting can be used later
XYZ north = new XYZ(0, 1, 0);
XYZ east = new XYZ(1, 0, 0);
XYZ south = new XYZ(0, -1, 0);
XYZ west = new XYZ(-1, 0, 0);
XYZ northeast = new XYZ(1, 1, 0).Normalize();
XYZ southeast = new XYZ(1, -1, 0).Normalize();
XYZ northwest = new XYZ(-1, 1, 0).Normalize();
XYZ southwest = new XYZ(-1, -1, 0).Normalize();

// Select off set distance,
// Select higher offsetDistance for bigger buildings
// for the elevation markers to appear outside the building.

// if the offset distance is high
// might not capture the elevation view

// however there is a fix
// if the offset distance is high
// the solution is to:
// Remove Crop View & Crop Region Visible

// this means to set(0)
// the same thing is also done

// under C# coding,
// to the "No Clip" "Parameter"

// under Revit Software
// Under "Properties" -> "No Clip"

double offsetDistance = 300;

// Start a transaction
using (Transaction t = new Transaction(doc, "Create Elevation Views"))
{
t.Start();

// Create an ElevationMarker for each direction at the specified offset
CreateElevationMarkerAtDirection(doc, north, offsetDistance, 0);
CreateElevationMarkerAtDirection(doc, northeast, offsetDistance, 1);
CreateElevationMarkerAtDirection(doc, east, offsetDistance, 2);
CreateElevationMarkerAtDirection(doc, southeast, offsetDistance, 3);
CreateElevationMarkerAtDirection(doc, south, offsetDistance, 4);
CreateElevationMarkerAtDirection(doc, southwest, offsetDistance, 5);
CreateElevationMarkerAtDirection(doc, west, offsetDistance, 6);
CreateElevationMarkerAtDirection(doc, northwest, offsetDistance, 7);

t.Commit();
}
}

private void CreateElevationMarkerAtDirection(Autodesk.Revit.DB.Document doc, XYZ direction, double offsetDistance, int index)
// Settings for elevation views created
{
// Calculate new marker location && it multiplies like a vector
XYZ newLocation = direction.Multiply(offsetDistance);

// Create the ElevationMarker at new
// Create a view at the marker
// https://maciejglowka.com/blog/creating-elevation-views-with-api/#:~:text=ElevationMarker%20marker%20...
// by Maciej Główka
ElevationMarker marker = ElevationMarker.CreateElevationMarker(doc, GetViewFamilyType(doc).Id, newLocation, 100);
ViewSection elevationView = marker.CreateElevation(doc, doc.ActiveView.Id, index % 4); // Use modulo to ensure index is within 0-3

//to name the views
//after creation
// using elevationView.Name = $"Elevation {direction.ToString()}";

//method to rotate
/*
https://forums.autodesk.com/t5/revit-api-forum/elevationmarker-not-rotating/m-p/7114473/highlight/tr...
by mehdi.blanchard
currently rotates by ANTICLOCKWISE
double rotation = Math.PI / 2;
Line lineAsAxis = Line.CreateBound(new XYZ(newLocation.X, newLocation.Y, newLocation.Z), new XYZ(newLocation.X, newLocation.Y, newLocation.Z + 10));
marker.Location.Rotate(lineAsAxis, rotation);
*/

//NORTH
if (index == 0)
{
elevationView.Name = $"ETTV ELEVATION North";
double rotation = Math.PI / 2;
Line lineAsAxis = Line.CreateBound(
new XYZ(newLocation.X, newLocation.Y, newLocation.Z),
new XYZ(newLocation.X, newLocation.Y, newLocation.Z + 10));

//Basically creates a "Line" at the new location
//The x and y location stay the same but Z changes
// This creates a length "10" line in the Z axis
// the element at NORTH is then rotated among the axis.