Move points to a '3D grid'

[thomthom]

It seemed to only change a cubes vertices in the Z axis ??

Should apply to X,Y and Z... Seemed to work correctly in my quick test...

[daiku]

Cubificator?

Polyhedronizer ?

Orthogonizer ?

Orthographizer ?

OrthograFixer ?

It's like Autotune for cad! They can make you sound good, even if you can't sing.
If you are editing digital music, and you need to make the drum beats perfect, you can move the beats to the nearest sixteenth note, or whatever. It's call "quantizing".

[Dan Rathbun]

It's called "quantizing".

TRUE !!

Restriction to discrete values (or multiples thereof,) rather than any values in the set of possibles (real numbers, in this case.)

So.. the long term:
Vertex Positional Quantization

The short form:
Vertex to Grid

[rossthompson]

Hi guys, I have had a play with Dan's Beta version and for me it works really well. The verticies are adjusted in X,Y and Z directions and the undo function works fine!

The only slight problem: it adjusts all the geometry in the model, rather than just the active selection. The original module just adjusted the active selection.

Any ideas?

Again thanks for the support - this script should be a realy time saver!

Ross

[Dan Rathbun]

Well .. I did not think I changed the context of what Thomas' code did... just tried to wrap the code properly and added the menu_command() method to handle an inputbox.

I'll have a look at it.. again.

(And it's not really MY edition just because I added the inputbox.. it's still Thomas' thing.)

[Dan Rathbun]

OK... added support for a selection. (Pssst! ... there was no selection support from the beginning Ross.)

This utility should probably be wrapped in Thomas' toplevel author module, and reside below his author directory in some manner.

I'll leave those choices up to him, and when he releases version 1.0.0, we'll delete these beta versions in this thread and put in a link to the release thread.

Code: Select all

#  ==========================================================================
#  GridSnap.rb
#  --------------------------------------------------------------------------
#  by Thomas Thomassen
#
#  --------------------------------------------------------------------------
#  THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
#  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
#  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#  --------------------------------------------------------------------------
#
#  This utility quantizes the vertex locations, of the current selection,
#    of the model, or just the current context, to a 3D grid, whose interval
#    can be set via a popup inputbox.
#
#  --------------------------------------------------------------------------
#  Revisions:
#
#   0.1.0 : 2012-03-26 : by Thomas Thomassen
#   |
#   initial beta release
#
#   0.2.0 : 2012-03-26 : by Dan Rathbun
#   |
#   + Added menu_command() method for inputbox and undo operation.
#
#   0.3.0 : 2012-03-28 : by Dan Rathbun
#   |
#   + Revised the menu_command() method to pass a selection set to the
#       adjust_vertices() method as a 2nd argument.
#
#  ==========================================================================

module GridSnap

  @@last_tolerance = 0.25.m

  class << self # PROXY CLASS

    def round_point( point, tolerance )
      grid_pt = point.to_a.map { |n|
        b = ( n / tolerance ).to_i * tolerance
        r = n % tolerance
        (r > tolerance / 2) ? b + tolerance : b
      }
      Geom::Point3d.new( *grid_pt )
    end
   
    def test_it
      pt = Geom::Point3d.new( 3.976879.m, 3.760209.m, 1.002568.m )
      tolerance = @@last_tolerance
      grid_pt = round_point( pt, tolerance )
     
      puts "Original: #{pt}"
      puts "Tolerance: #{tolerance}"
      puts "Grid Point: #{grid_pt}"
    end
   
    def adjust_vertices( tolerance = @@last_tolerance, ents = nil )
      model = Sketchup.active_model
      vertices = []
      # determine the context:
      ents = model.active_entities() if ents.nil?
      # Collect vertices.
      for e in ents #model.active_entities
        vertices << e.vertices if e.is_a?( Sketchup::Edge )
      end
      vertices.flatten!
      vertices.uniq!
      # Calculate grid adjustments.
      vectors = []
      entities = []
      for vertex in vertices
        pt = vertex.position
        grid_pt = round_point( pt, tolerance )
        vector = pt.vector_to( grid_pt )
        next unless vector.valid?
        entities << vertex
        vectors << vector
      end
      # Apply transformations
      model.active_entities.transform_by_vectors( entities, vectors )
      puts "#{entities.size} adjusted to grid."
    end
   
    def menu_command()
      title   = 'Adjust Vertices'
      prompt  = 'Tolerance'
      default = @@last_tolerance
     
      result = UI.inputbox([prompt],[@@last_tolerance],title) rescue @@last_tolerance
      if result
        model = Sketchup.active_model
        begin
          ###
          model.start_operation("#{title} (#{Sketchup.format_length(result[0])})")
            #
            if model.selection.empty?
              adjust_vertices( result[0] )
            else
              adjust_vertices( result[0], model.selection.to_a() )
            end
            #
          model.commit_operation()
          ###
        rescue
          model.abort_operation()
        else
          @@last_tolerance = result[0]
        end
      end
    end

  end # PROXY CLASS
 
  #{# RUN ONCE
  #
  unless file_loaded?("GridSnap.rb")
   
    # Menu Entry:
    UI.menu("Tools").add_item("GridSnap") { menu_command() }
   
    file_loaded("GridSnap.rb")
 
  end #}

end # module