RBA GDS2 layer parameter modification

Comments

• Matthias

  November 2010 edited November 2010

  Hi Jean-Yves,

  I assume you are trying to do something like that:

  v = ... # get RBA::LayoutView
  l = v.begin_layers
  while !l.at_end?
    l.current.visible = true
    l.next
  end
  

  This will fail because "l.current" is basically just a pointer to an internal structure and it is not allowed to directly modify this structure. Hence the pointer is "const" meaning it cannot be modified.

  To solve that problem, the code needs to be rewritten like that:

  v = ... # get RBA::LayoutView
  l = v.begin_layers
  while !l.at_end?
    p = l.current.dup              # create a new copy which can be modified
    p.visible = true               # modify the visibility
    v.set_layer_properties(l, p)   # install the new layer properties
    l.next
  end
  

  I admit that is not very intuitive but this scheme is a tribute to the linking of ruby's dynamic objects with static C++ structures. BTW this scheme is used in different places, i.e. for the modification of geometrical properties of shapes.

  Hopefully that helps.

  Best regards,

  Matthias
• guinamant

  November 2010 edited November -1

  Hi Matthias,
  
  your code suits me perfectly. Thank you for yout help.
  
  Jean-Yves