[vtkusers] vtkPicker

[Lachlan Blackhall]

Hello again,

I am trying to implement a simple vtkpicker example to teach myself how 
it works. I want to change the colour of a sphere when i click on it. 
Ive had a look at the documentation but it is a bit confusing. I have 3 
spheres in a rendering window. What methods and order must i use to get 
the actor i have clicked so i can change its colour property.

Thankyou in advance

Lachlan