Is it possible to convert the dimensions that MeasureIt gives into text or mesh for manipulation?

Question

In reality I would like to create dimensions on objects and output the image in Panorama to read in a 360 reading engine.

So I am thinking if it is possible to convert the dimensions into text it would be possible, I had tried to create a script for this, but I encountered problems when the dimension comes it is attached to the world center of Blender.

Answer 1

You could make a mesh that consists of a single edge(or whatever else that has something with any coordinates and you can move that - could be two verts, could be single vert and object's origin - whatever). We have the coordinates in Geometry Nodes. You can see them if you enable Viewer Node's Attribute Text overlay:

So we have coordinates of vertex one and vertex two. Or as one would say in Nerd: that's vertex 0 and vertex 1. So one can sample the position of those verts with index 0 and 1 and Vector Math node even has Distance mode so there is no need to do any math at all - how good is that?..

All that's left to do is to convert that into text and place it somewhere:

And that's how you have a measurement apparatus constructed with geometry nodes. You can duplicate it easily and snap vertices anywhere.

You can of course place the text anywhere you want and make whatever additional geometry that may help indicate what is measured. You don't need to use the geometry of the object the modifier is on, you could sample another object with the use of Object Info node as well. The possibilities are pretty much endless.

Answer 2

This script, from Blender Artists worked when I ran it but it has its limitations.

import bpy
from mathutils import *


with open("C:/Users/...YOUR PATH/Desktop/measureit_output.txt", mode="w") as f:

    objects = bpy.data.objects.items()

    for obj in objects:
        mg = obj[1].get('MeasureGenerator')
        if mg:
            obj_name = obj[0]
            for e in mg[0].items():
                if e[0] == 'measureit_segments':
                    ms = e[1]
                    for m in ms:
                        measure_name = m.get('gltxt')
                        measure_points = (m.get('glpointa'), m.get('glpointb'))
                         
                        vdata = obj[1].data.vertices
                        a = vdata[measure_points[0]].co
                        b = vdata[measure_points[1]].co
                        length = (a - b).length
                        print(f"{obj_name};{measure_name};{length:.2f}")
                        f.write(f"{obj_name};{measure_name};{length:.2f}\n")
            print()

Limitations As I said it has limitations which I can't adequately bug test. It seems to work fine for measurements inside objects, but does not output the distances between between objects or the objects and the origin correctly when I use 'Link' or 'Origin'.

The output.txt file looked like this, notice the last figure is incorrect and does not match with my image:

Cube;Ymeasure;2.00

Cube;Zmeasure;2.00

Cube;Xmeasure;2.00

Suzanne;Xmeasure;1.64

Suzanne;Suzanne-Cube;1.39

A workaround might be creating an object for your measurement such as a simple mesh line.