How to preview Text3d in Rhino

[flokart]

Hi all,

i try to preview a Text3d object in rhino from grasshopper via python so i thought this should work.

import Rhino as rh
import System

T = rh.Display.Text3d('Test')
C = System.Drawing.Color.Black
P = rh.Geometry.Plane.WorldXY
a = rh.Display.DisplayPipeline.Draw3dText(T,C,P)

but i got a error that DisplayPipeline (object?) is expected at first.
When i go to the sdk
https://developer.rhino3d.com/wip/api/RhinoCommon/html/M_Rhino_Display_DisplayPipeline_Draw3dText_1.htm
nothing is written about DisplayPipeline as input, only text,color,plane.

The help in the grasshopper python editor is mention Draw3dText(self: DisplayPipeline, text: Text3d, color: Color, textPlane: Plane) wahtever this self: DisplayPipeline means.

How can i create self: DisplayPipeline to get a text preview ?.

Thanks in advanced.

[Dancergraham (Graham Knapp)]

Hello Florian,

I haven’t tried this but do the Display examples help? Maybe you need a display conduit instead of a pipeline?

Graham

Samples

[flokart]

Thanks for help,

but the examples do not help and i guess the main reason are my scripting skills.
This forum post Creating text objects and outputting them as normal Rhino geometry is exactly what i have tried and the python and c# example works exactly the way i want but these scripts are to complicated to me.
It would be cool to understand this created class to preview non grasshopper objects and also preview grasshopper objects without an output maybe in the future.
But my second try succeed with creating a TextEntity object and previewing as surfaces.
Unfortunatly baking text entity take the dimesion style changes not into account.

import Rhino as rh
import scriptcontext as sc


# get dimstyle and change settings
ds = rh.DocObjects.DimensionStyle()


# change text properties ( a lot of options )
ds.Font = rh.DocObjects.Font(F)
ds.TextHeight = H
#ds.TextVerticalAlignment = rh.DocObjects.TextVerticalAlignment.Bottom


# create textentity which is not visible for grasshopper
te = rh.Geometry.TextEntity.Create(T,P,ds,False,0,0)


# create textentitysurface which is visible
# for preview what you get if you bake the text entity
a =  rh.Geometry.TextEntity.CreateSurfaces(te,ds,0,0)

# bake text with same settings like textentity to get rhinotext object
if Bake:
    sc.doc = rh.RhinoDoc.ActiveDoc
    rh.RhinoDoc.ActiveDoc.Objects.AddText(T,P,H,F,False,False)
    sc.doc = ghdoc

[AndersDeleuran]

I like to use the simpler CustomDisplay class for rendering geometry and text from GHPython, using these functions to circumvent some of the issues with using this method:

How to redraw the object created by customdisplay?

The approach I generally use is to clear the custom display each time the component runs. In GHPython, I stick a persistent custom display into the sticky dict (enabling one to kill any stray/forgotton displays), using these two functions (that I import from a general GHPython utility module I’ve been developing): import Rhino as rc from scriptcontext import sticky as st def customDisplay(toggle,component): """ Make a custom display which is unique to the component and lives in sticky…

Python display with gh

They sure are: Edit: Just realised I didn’t actually demonstrate how to implement those functions: 191010_CustomDisplayFunctions_GHPython_AHD_00.gh (8.1 KB)

[flokart]

Here are the result of my efforts of creating a datagrid from a tree.
Is super slow ugly coding but anyway maybe someone can use it.

DataGrid.gh (8.5 KB)