I always believed TIGs “Add Centerpoint” plugin was the go to tool for adding a Center Point and in my tests its appeared to work very well.
But I needed the centre of a star and added a point using the tool and then drew my model around it… But when I reviewed it afterwards its was clearly not the centre.
And this is easy to see if you create a star on the central axis and then add the centerpoint.
As you can see its not in the center at all… So i tried a triangle and was surprised at the results:
When you measure you can see that its not finding the centre, but a point 1/2 way along the red axis.
So then I tried rotating the traingle off axis a bit to see what happens and now I don’t have a clue what its doing… NOw the centre is not an any mathematical centre that I can find:
I guess there is some logic to this, but I can’t work it out… So I just wonder if anyone knows of another ‘Find Center’ plugin which might help?