Export Image is cutting few pixels from image corners

[alexpaduroiu]

Hello there!

I have a small problem regarding Decoument.ExportImage(ImageExportOptions options);

I am trying to export a set of drafting views but somehow the generated images cuts the views edges.

the Images:

And this image has the bottom part not visible at all:

The cut is very small but very frustrating because I can't make it a whole or even offset the element to fit the images.

Image Export Options used:

ImageExportOptions imgExportOpts = new ImageExportOptions()
{
ZoomType = ZoomFitType.FitToPage,
PixelSize = 500,
FilePath = rbrImagesDirectory + @"\",
FitDirection = FitDirectionType.Vertical,
HLRandWFViewsFileType = ImageFileType.PNG,
ShadowViewsFileType = ImageFileType.PNG,
ImageResolution = ImageResolution.DPI_72,
ShouldCreateWebSite = false,
};

imgExportOpts.ExportRange = ExportRange.SetOfViews

I have tried to modify FitDirectionType.Horizontal and this makes it worse than it is now by cutting the bottom portion even more -> in that case for the first image, the bottom part of the bar is not visible at all.

The image doesn't have such a big cut in the edges but it will be nice to have some spaces there or at least to see the parts 🙂

Please let me know if there is any way to zoom out the element or move it in order to be arranged better in image.

Thank you!

[jeremytammik]

Please submit a minimal reproducible case that I can share with the development team for further analysis:

https://thebuildingcoder.typepad.com/blog/about-the-author.html#1b

Thank you!

[alexpaduroiu · Accepted solution]

Sorry for the very very late reply. 😓

I was caught with other projects and lots of work.

Well I have solved the problem!

The problem was with the drafting view I was trying to export. After creating a group of details in the Drafting view, somehow the outline of the view wasn't big enough to include my details. don't know sure why but what i have done to resolve the problem was the following:

drafting.CropBoxActive = true;
drafting.CropBoxVisible = true;

private static void ExtendViewCrop(View drafting, Group detail)
        {
            BoundingBoxXYZ crop = (drafting!= null ? drafting.CropBox : null);
            if (crop == null || crop.Max == null || crop.Min == null || crop.Transform == null || detail == null)
                return;
            BoundingBoxXYZ detailBox = detail.get_BoundingBox(drafting);
            BoundingBoxXYZ extendedCrop = new BoundingBoxXYZ();
            extendedCrop.Transform = crop.Transform;

            if (detailBox == null || detailBox.Max == null || detailBox.Min == null)
                return;

            extendedCrop.Max = detailBox.Max + (extendedCrop.Transform.BasisX + extendedCrop.Transform.BasisY / 2) * 0.03;
            extendedCrop.Min = detailBox.Min + (-extendedCrop.Transform.BasisX + -extendedCrop.Transform.BasisY / 2) * 0.03;
            drafting.CropBox = extendedCrop;
        }

So basically extending the view crops max and min on their direction with a small value so the detail will fit in my drafting.

I am sure that there are lots of other better options doing this, but for now it made the trick. Of course I am opened to more solutions:D

[jeremy_tammik]

Looks good to me! Thank you for sharing the solution.

[Iev60047]

Is there a .cs file someone could share with me of this completed code? I am trying to get the same code to run. Thank you!

Well, I am still struggling, but I think I know better questions: what class is the drafting variable? If I defined view instead of drafting would I write:

View view = doc.ActiveView;

and should I define this before the private static void ExtendVeiwCrop(View view) function?

[Iev60047]

I feel like I am getting closer, but still no luck. I am getting a Modification outside transaction attempt. I tried handling it by wrapping my one adjustment to the model (adjusting the crop box), but that didn't help.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using Autodesk.Revit.DB.Architecture;


namespace AdjustCropView
{
    [Transaction(TransactionMode.Manual)]
    [Regeneration(RegenerationOption.Manual)]
    public class Class1 : IExternalCommand
    {

        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            //Get application 
            UIApplication uiapp = commandData.Application;

            //Get document objects
            Document doc = uiapp.ActiveUIDocument.Document;

            //Get active view
            View view = doc.ActiveView;

            //Turn on crob box and its visibility
            view.CropBoxActive = true;
            view.CropBoxVisible = true;

            //Create bounding box objects
            BoundingBoxXYZ crop = view.CropBox;
            BoundingBoxXYZ detailBox = view.get_BoundingBox(view);
            BoundingBoxXYZ extendedCrop = new BoundingBoxXYZ();
            extendedCrop.Transform = crop.Transform;

            //Modifying the extended crop box
            extendedCrop.Max = detailBox.Max + (extendedCrop.Transform.BasisX + extendedCrop.Transform.BasisY / 2) * 0.03;
            extendedCrop.Min = detailBox.Min + (-extendedCrop.Transform.BasisX + -extendedCrop.Transform.BasisY / 2) * 0.03;

            using (Transaction tr = new Transaction(doc))
            {
                tr.Start("Transform crop view");

                view.CropBox = extendedCrop;

                tr.Commit();
            }


            return Result.Succeeded;

        }

    }
}

[EATREVITPOOPCAD]

@Iev60047 You are getting an error that you are trying to make a change to a revit model outside of a transaction. All changes made to a model need to happen inside a transaction. 

My guess is that you enabling the crop box and showing it is the issue... (It is a change to the model)

Try this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using Autodesk.Revit.DB.Architecture;


namespace AdjustCropView
{
    [Transaction(TransactionMode.Manual)]
    [Regeneration(RegenerationOption.Manual)]
    public class Class1 : IExternalCommand
    {

        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            //Get application 
            UIApplication uiapp = commandData.Application;

            //Get document objects
            Document doc = uiapp.ActiveUIDocument.Document;


            using (Transaction tr = new Transaction(doc))
            {
                tr.Start("Transform crop view");
				
			
	            //Get active view
				View view = doc.ActiveView;
			
				//Turn on crob box and its visibility
				view.CropBoxActive = true;
				view.CropBoxVisible = true;

				//Create bounding box objects
				BoundingBoxXYZ crop = view.CropBox;
				BoundingBoxXYZ detailBox = view.get_BoundingBox(view);
				BoundingBoxXYZ extendedCrop = new BoundingBoxXYZ();
				extendedCrop.Transform = crop.Transform;

				//Modifying the extended crop box
				extendedCrop.Max = detailBox.Max + (extendedCrop.Transform.BasisX + extendedCrop.Transform.BasisY / 2) * 0.03;
				extendedCrop.Min = detailBox.Min + (-extendedCrop.Transform.BasisX + -extendedCrop.Transform.BasisY / 2) * 0.03;


                view.CropBox = extendedCrop;

                tr.Commit();
            }


            return Result.Succeeded;

        }

    }
}

[Iev60047]

@EATREVITPOOPCAD Thanks again. I enclosed that in. In the meantime I figured there's no way that my code will work because 

BoundingBoxXYZ detailBox = view.get_BoundingBox(view);

is not going to do anything. I need to get a bounding box (I assume this will assume the same boundary as zoomtofit) of the active elements in the view. This means I need to filter for visible element Id's (I think). 

            //Create empty variable to contain element Id's. 
            ElementId elemId = null;

            //Get visible element Id's using filtered collector.
            FilteredElementCollector collector = new FilteredElementCollector(doc, elemId);

This code is not working and I'm stumped again. Learning a lot though! I feel closer to the solution. Also, as a side note, I know that I want only 2D views, so I think the class BoundingBoxUV may be more appropriate for my application, but I'll be fine if I can get it to work with the class BoundingBoxXYZ.

Edit: I also find it odd that I can't look up get_BoundingBox up in the Revit API doc. Am I missing another piece of documentation this filter/constructor exists on?

[EATREVITPOOPCAD]

Try this

view.get_BoundingBox(null)

And here is the documentation

https://www.revitapidocs.com/2016/def2f9f2-b23a-bcea-43a3-e6de41b014c8.htm