# Labels following objects in 3D

beepbap shared this question 1 year ago
Answered

Hi,

tldr:

• sketches in 3d
• animated objects
• labels "sometimes" do not follow animated objects
• why?

I have the problem that I cannot figure out what qualifies the label of an object to be able to follow its object "in a smart way" rather than be attached to fixed position.

I have a couple of GeoGebra sketches in 3D on Euclidean vector operations and some of them contain animated sliders which in turn drive the whole sketch. My objects are also labelled with some Latex. In many cases this works great, the labels are following their objects (mostly vectors and points) in a "smart way" during the animation. Here is an example of mine for a point-line projection which works:

However, in some sketches this stops working without me being able to pinpoint the operations or features which make this stop working. Here is an example for constructing a frame on a sphere, where the labels refuse to move at all:

Could someone explain to me what operations or features I would have to avoid or use, in order to make this animating of labels to work? I am not too experienced in GeoGebra and I am sorry if this question has been already answered, but I could not find any previous threads.

Cheers,

beepbap

Best Answer

por las pruebas que he hecho me parece que hay un bug en el caption de los vectores creados con unitvector()

todos los caption de los vectores creados con unitvector() giran alrededor del origen

espero que se resuelva pronto

## Comments (2)

2

por las pruebas que he hecho me parece que hay un bug en el caption de los vectores creados con unitvector()

todos los caption de los vectores creados con unitvector() giran alrededor del origen

espero que se resuelva pronto

1

Hi,

thanks for the hint. At least in my example the function UnitVector() indeed seems to be the culprit. And manually normalizing the vector (i.e. dividing it by its length) does not exhibit the same bug as using the function. Thanks again!

Cheers,beepbap

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