I would like to rotate a TikZ text node by a degree that depends on the content length. So a text node with 20 characters should be rotated e.g. 20*0.1 = 2 degree, a text node with 100 characters for 100*0.1 = 10 degree. It does not matter if whitespace influences this or not.
Is it possible to do that somehow automatically, or do I need to count letters manually?