Read TextEntity headless

Rhino Developer compute.rhino3d
,
1

Hello,

I have some TextEntity and I want to retrieve the text and the bounding box from it.
When I try to parse the text as text.RichText.ToString(); or text.PlainText.ToString(); it gives me a <empty> results.

image
image1288×627 60.3 KB

What would be the best way to read the TextEntity inside gh?

parseTextEntityHeadless.gh (3.8 KB)

Thanks in advance.
Amaraa~

2

Hey @amaraa, you’d need to cast your input, currently you’re creating a new empty TextEntity and printing that.

// Replace
TextEntity htext = new TextEntity();
// With this
TextEntity htext = (TextEntity)x;
3

Hey @csykes,
Thanks for the tip, however it shows an error of : 1. Unable to cast object of type 'System.String' to type 'Rhino.Geometry.TextEntity'. (line: 57)

image
image1351×591 72.1 KB

I’ve tried all type hint of the ‘x’ input but it’s still the same.

Have you tired it on your pc?

4

How are you referencing the text entity?

5

You should first find the RhinoObject in the document, then get its geometry as a TextEntity:

image
image2172×958 185 KB

In the context of of a headless document, you should look for the object in that document and not the RhinoDocument reference we get in the script editor.

1 Like
6

Hello,

These texts are referenced as .dxf files in headless environment.

7

Okay, I will try to find the text objects in the file I am working on.
I am referencing the initial file using the dxf import according to Mr.Baer’s example, then I am trying to get the text data within grasshopper for further process.

1 Like
8

Ok. So in your case, you need to loop through the objects in the doc you create and check if the object geometry is a TextEntity. Something like:

image
image1920×1079 146 KB

2 Likes
9

Thank you very much Mr.Luis for your fast response, it works very well.

I will work on the bounding box of these words now,
Have a great day ahead.

Greatly appreciated,
Amaraa

1 Like
10

I was able to retrieve the layer names and the text itself according your suggestion.

text layer names ok
text layer names ok1230×777 76.2 KB

Now I need to know the exact location - bounding boxes - of each texts within the file.

Thus I am trying to write something like this below (the logic is to make a list and add bounding boxes to it)

  using(var doc = Rhino.RhinoDoc.CreateHeadless(null))
    {
      doc.Import(path);
      var bboxList = new System.Collections.Generic.List<GeometryBase>();

      foreach(var ro in doc.Objects)
      {
        if(ro.Geometry is TextEntity)
        {
          var inputTextEntity = ro.Geometry as TextEntity;

          var tfont = "Arial";  //need to be retrieved from original text
          var tHeight = 1.5; //need to be retrieved from original text
          var tPlane = Plane.WorldXY; //need to be retrieved from original text

          var textOutlineCurves = Curve.CreateTextOutlines(inputTextEntity, tfont, tHeight, 0, true, tPlane, 1.0, 0.01);
          var bbox = new BoundingBox(textOutlineCurves);

          bboxList.Add(textOutlineCurves);
        }
      }
      Print(te.PlainText);
      textBbox = bboxList;
    }

However, I have encountered many errors shown in below image:

image
image851×430 41 KB

Could you please take a look at this Mr @fraguada?

textlocationtest.gh (8.1 KB)
sampletext1.dxf (160.1 KB)

Thanks you.
-Amaraa