With reference to the post generate text and use outlines in grasshopper… is it possible?, I am trying to output text visually and as an actual output in Rhino 5 using a Grasshopper scripted component. Basically, it should act like any Rhino.Geometry: it can be previewed and is removed from the display when the Preview is removed, and it can be baked using the component. It can also be used as input to another scripted component. From what I understand based on the post above, it is currently not possible in Rhino 5 to make TextObjects that function similar to Rhino.Geometry (not Objects.Add), i.e. preview-able and bake-able, and not immediately added to the Rhino Document. Am I wrong in this understanding? If someone could help me out with which functions to use or by giving an example of a workaround, I can adapt it from there. I am coding in Python. I’ve attached a file containing how far I’ve gotten so far, based on the gh file posted by Mostapha in the linked post. What am I doing wrong/what am I missing here? textCurve_edit.gh (7.3 KB)

[image] Bianchi: Am I wrong in this understanding? You’re mostly correct. You cannot override the Bake behaviour of a scripted component (although you can override the preview). That means that if you want baking/preview to work, you’ll have to output text data which supports these properties. This is possible, but can lead to problems since the data will be defined inside a script component. When that component is no longer in a file, you lose access to it. This becomes problematic only in those cases where the data is internalised.

Okay, so that being said, is there a way for me to output Text as objects similar to Rhino Geometry? i.e. preview-able and bake-able, aside from turning them into polycurves by exploding the underlying geometry. Technically, I would be passing them as input/output from component to component.

[text3d] BakeableText.gh (16.1 KB)

Thank you, @DavidRutten ! I’ll post up the Python component here if and when I can adapt it. I think Rhino.Display.Text3D seems to be the data type I was looking for. P.S. I think I should clarify it a bit further. Is it possible to do such text object creation and output without doing a function override in GhPython? This is since I’m using Rhino 5 (which is more commonly used by students since Rhino 6 is not yet out) though I am aware that overriding Bake and Preview via Python will be available in Rhino 6. In particular, I’m using GhPython so this makes overriding difficult (or impossible, but you know more than I do on that front). Also, I am a bit confused about this bit of code. Does it basically work as an override to the Bake Geometry function? #region baking bool IGH_BakeAwareData.BakeGeometry(RhinoDoc doc, ObjectAttributes att, out Guid id) { id = Guid.Empty; if (m_value == null) return false; if (att == null) att = doc.CreateDefaultAttributes(); id = doc.Objects.AddText(m_value, att); return true; }

Python is beyond my remit I’m afraid. But note that the script component isn’t doing anything special, it outputs an instance of a class which provides the preview and baking functionality. As long as you can generate your own .NET class type via Python it should be possible.

[image] Bianchi: Also, I am a bit confused about this bit of code. Does it basically work as an override to the Bake Geometry function? It’s not an override. The class I created implements the IGH_BakeAwareData interface which demands a function with this signature. Eventually, when a parameter containing this data is baked, all data in that parameter is asked to bake itself. Ultimately, previewing and baking is a per-datum operation, parameters merely relay that functionality.

@DavidRutten, there are a number of overrides in the code you provided. Are they necessary if I convert the code to Python, in particular Boundingbox and GetBoundingbox? As long as you can generate your own .NET class type via Python it should be possible. From what I understand, I’d need to use the clr module to import the .NET class (based on the component code) into the ghPython component. However, what I’d actually like to do is write the code entirely in Python. Given that there are a number of overrides in the component sample and that I’ll be handling other geometry aside from Text (e.g. lines, points), is it possible to do this in ghPython alone?

Don’t know, too python. @piac can you enlighten us?

Hi guys yes, this is possible in GhPython, also in Rhino 5, as the stuff that needs to be overridden is not in the GH_Component/GH_Script class itself. Here it is, David’s code, translated to IronPython. BakeableTextGhPy.gh (15.7 KB)

Thanks again for the help, @DavidRutten and @piac. Funnily enough I had just finished translating it to Python when your reply showed up. In particular, I was struggling with returning the right data type from the function, since I’d only get the class instance back when I would store the function call in the output A. It does exactly what I was aiming to do; I’ll come back and post another file here if the solution would be helpful for others. I’m curious about this bit of inheritance though: GH_GeometricGoo[rh.Display.Text3d]. Does this mean the GeometricGoo instance stores a Rhino Text3d data type? If so, what is the class inheriting in terms of Grasshopper structures here? This appears to be the key to getting back the Text Object itself instead of just the class instance, aside from also returning the id of the text object in the BakeGeometry definition and marking DuplicateText3d as a static method.

Creating text objects and outputting them as normal Rhino geometry

Grasshopper Developer

DavidRutten (David Rutten) September 29, 2017, 8:23am 4

BakeableText.gh (16.1 KB)

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Creating text objects and outputting them as normal Rhino geometry

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