rotating multiple shapes

Comments

• tomas2004

  September 12

  Hello,

  First of all, if you have a shape that is repeated a lot of times, it is way better to work hierarchically: create the shape in a new cell, and instantiate that cell in the original cell (multiple times). If the shape changes, you have to do that only once inside that new cell and it will change everywhere. Your file size will also get much smaller if you have a huge number of repetitions.

  I tried the "Selection > Rotation By Angle" menu entry and it seems to rotate the selected shapes around the center of the Bbox of all the selected shapes combined.

  To rotate each structure around the center of its own Bbox you can write a small script and add it as a new menu entry like "Rotate Each Shape Individually By Angle".

  Cheers,

  Tomas
• Matthias

  September 14

  Hi @mpee,

  Here is a sample for a script like the one @thomas2004 mentioned (Ruby):

  vw = RBA::LayoutView.current
  
  selection = vw.object_selection
  
  selection.each do |s|
    shape = s.shape
    if shape
      # The transformation consists of these parts:
      # 1.) move the shape so its center is at 0,0 -> t1
      # 2.) rotate the shape by 45 degree -> t2
      # 3.) move the shape back to the original position -> t1.inverted
      t1 = RBA::ICplxTrans::new(RBA::Point::new - shape.bbox.center)
      t2 = RBA::ICplxTrans::new(1.0, 45.0, false)
      tr = t1.inverted * t2 * t1
      shape.polygon = shape.polygon.transformed(tr)
      # store the new shape in the selection array
      s.shape = shape
    end
  end
  
  # establish the new selection
  vw.object_selection = selection
  

  Note that the rotation comes with a small rounding error due to the finite resolution of the database. Hence the rotated edges may not be precisely 45 degree edges.

  Matthias
• mpee

  September 15

  Hi Matthias,
  Many thanks for your code, it perfectly worked at the first attempt.
  @thomas2004: Thanks for your feedback, of course we are using hierarchical layout and viadefs, but I do have a very special case here...
  Best Regards,
  Martin
• tomas2004

  September 18

  Hello,

  You could also replace the boxes/polygons by instances using the search and replace utility and put the desired shape in that instantiated cell... It makes your layout easier to update (again) later if needed...

  Cheers,

  Tomas