Scripting help. Where to start.....

o0rico0o · 26 Nov 2014, 22:46

Ok great, I may do just that. In the mean time would it be possible for you to send the skp file over so that I could see what you started with?

Thanks

o0rico0o · 27 Nov 2014, 12:58

Using your script this is what Im getting so far....

Initial Blocks....

Result....

Do you know what I am doing wrong?

sdmitch · 27 Nov 2014, 13:53

Model has been sent by Private Message.

o0rico0o · 27 Nov 2014, 15:10

Great thanks for the PM, I understand the process alot better now! Final question, do you know how I could edit the script to make sure that all elements have at least one connection and that there would be no dead ends?

sdmitch · 27 Nov 2014, 18:33

@o0rico0o said:

Great thanks for the PM, I understand the process alot better now! Final question, do you know how I could edit the script to make sure that all elements have at least one connection and that there would be no dead ends?

This code should get close if not there.

mod = Sketchup.active_model
ent = mod.active_entities
sel = mod.selection
# create a 3d node network
nodes = []; nhsh = {}
for z in 0..5
 for y in 0..5
  for x in 0..5
   nodes << Geom;;Point3d.new(x.to_s.to_l,y.to_s.to_l,z.to_s.to_l)
   nhsh[nodes.last]=0
  end
 end
end
#randomly connect nodes
mps = []; loops = 0
until nodes.empty?
 loops += 1; break if loops>999
 Sketchup.set_status_text "loop #{loops}"
 node = nodes[rand(nodes.length)]
 try = 0
 begin
  try += 1; dist=0
  near = nodes[rand(nodes.length)]
  unless node==near
   mp = Geom;;Point3d.linear_combination(0.5,node,0.5,near)
   unless mps.include?(mp)
    dist = node.distance near
   end
  end
 end until ((dist>0 && dist<='1.75'.to_l) || try>nodes.length)
 if (dist>0 && dist<='1.75'.to_l && try<=nodes.length)
  cdn = ['Black-Black','Blue-Blue','Blue-Black','Green-Green','Green-Blue', \
  'Green-Black','Yellow-Yellow','Yellow-Green','Yellow-Blue','Yellow-Black', \
  'Red-Red','Red-Yellow','Red-Green','Red-Blue','Red-Black']
  cd = mod.definitions[cdn[rand(cdn.length)]]
  ci = ent.add_instance(cd,Geom;;Transformation.new())
  tr = Geom;;Transformation.scaling('1'.to_l,'1'.to_l,dist)
  ci.transform! tr
  vector = node.vector_to(near).normalize
  xa,ya,za = vector.axes
  tr = Geom;;Transformation.axes(node,xa,ya,za)
  ci.transform! tr
  mod.active_view.refresh
  mps << mp
  nhsh[node] += 1
  nodes.delete(node) if nhsh[node]>2# at least two connections
 end
end

o0rico0o · 27 Nov 2014, 19:59

Great, thank you for all of your help! I'm really sorry to keep asking you to push this further! I have two more questions.

Currently the script is locating each block at a random point within the predefined cube. Can this cube be removed so that the structure is free to grow in any direction ( on second thoughts maybe removing the ability to grow in the -z plane direction?
If this process was replicated in the physical word we would have to build from the bottom, securing the structure as we go. If we were to build it, the construction process would be similar to that of a growing tree (for every incremental increase in height there is an increase in the diameter), this helps the structure to retain its integrity. Could this process be replicated? So that the script builds from the bottom -up?

As always thanks again for your help, I really appreciate it!

sdmitch · 27 Nov 2014, 20:41

@o0rico0o said:

Great, thank you for all of your help! I'm really sorry to keep asking you to push this further! I have two more questions.

Currently the script is locating each block at a random point within the predefined cube. Can this cube be removed so that the structure is free to grow in any direction ( on second thoughts maybe removing the ability to grow in the -z plane direction?

If this process was replicated in the physical word we would have to build from the bottom, securing the structure as we go. If we were to build it, the construction process would be similar to that of a growing tree (for every incremental increase in height there is an increase in the diameter), this helps the structure to retain its integrity. Could this process be replicated? So that the script builds from the bottom -up?

As always thanks again for your help, I really appreciate it!

I would assume so but probably produce some very weird results. Not sure what "-z plane direction" is.
Not sure why the order of creation would effect the construction. Varying the "diameter" of the pieces from level to level would be easy enough to do.

o0rico0o · 28 Nov 2014, 12:03

I'm all about the weird results! when I said '-z direction' I was referring to nothing below the ground plane.
I was thinking in terms of varying the diameter of the overall structure, to create an overall form that is similar to that of a truncated square pyramid.
my original image also allows for T connections. how easy would it be to integrate this into the script?

sdmitch · 28 Nov 2014, 15:00

@o0rico0o said:

I'm all about the weird results! when I said '-z direction' I was referring to nothing below the ground plane.

This code creates a path which can get a little weird. Plus it varies the "diameter" relative to the height.

mod = Sketchup.active_model
> ent = mod.active_entities
> sel = mod.selection
> # create a 3d node network
> nodes = []; nhsh = {}
> for z in 0..5
>  for y in 0..5
>   for x in 0..5
>    nodes << Geom;;Point3d.new(x.to_s.to_l,y.to_s.to_l,z.to_s.to_l)
>    nhsh[nodes.last]=0
>   end
>  end
> end
> #random connected path
> begin
>  node = nodes[rand(nodes.length)];#pick starting node
> end until node.z==0
> mps = []; loops = 0; 
> loop do
>  try = 0;dist=0
>  begin
>   near = nodes[rand(nodes.length)]
>   try += 1
>   unless near==node
>    dist = node.distance(near)
>    mp = Geom;;Point3d.linear_combination(0.5,node,0.5,near)
>    unless (dist > '1.75'.to_l || mps.include?(mp))
>     mps << mp
>     break
>    end
>   end
>  end until try==nodes.length
>  if try < nodes.length
>   cdn = ['Black-Black','Blue-Blue','Blue-Black','Green-Green','Green-Blue','Green-Black','Yellow-Yellow','Yellow-Green','Yellow-Blue','Yellow-Black','Red-Red','Red-Yellow','Red-Green','Red-Blue','Red-Black']
>   cd = mod.definitions[cdn[rand(cdn.length)]]
>   ci = ent.add_instance(cd,Geom;;Transformation.new())
>   xys = '1'.to_l * (1.0 + (3.0-node.z)/10.0)#vary diameter relative to height
>   tr = Geom;;Transformation.scaling(xys,xys,dist)
>   ci.transform! tr
>   vector = node.vector_to(near).normalize
>   xa,ya,za = vector.axes
>   tr = Geom;;Transformation.axes(node,xa,ya,za)
>   ci.transform! tr
>   Sketchup.active_model.active_view.refresh
>  else
>   puts "trys exceeded nodes"; return
>  end
>  node = near
>  loops += 1; break if loops > 250
>  Sketchup.set_status_text "Segment #{loops}"
> end
>

I was thinking in terms of varying the diameter of the overall structure, to create an overall form that is similar to that of a truncated square pyramid.

This code variation produces something like a pyramid.

for z in 0..3
>  for y in z..5-z
>   for x in z..5-z
>

my original image also allows for T connections. how easy would it be to integrate this into the script?

Nothing I do prevents "T" connections.

o0rico0o · 1 Dec 2014, 10:32

Brilliant this is perfect! The only issue that I'm having is that the model is too small, How can I change the script to make the individual elements 50x50x800mm? Thanks again!

sdmitch · 1 Dec 2014, 15:39

@o0rico0o said:

Brilliant this is perfect! The only issue that I'm having is that the model is too small, How can I change the script to make the individual elements 50x50x800mm? Thanks again!

Unless you eliminate all diagonal elements, they can't all be 800mm.

o0rico0o · 1 Dec 2014, 16:26

No thats fine, I don't mind variation, I was just wondering how to adapt the script to work at a larger scale. At the moment the elements are drawn at 0.2x0.2x3mm

sdmitch · 1 Dec 2014, 16:45

@o0rico0o said:

No thats fine, I don't mind variation, I was just wondering how to adapt the script to work at a larger scale. At the moment the elements are drawn at 0.2x0.2x3mm

This variation produces 50X50X800mm elements.

mod = Sketchup.active_model
ent = mod.active_entities
sel = mod.selection
# create a 3d node network
nodes = []; nhsh = {}
for z in 0..5
 zz = (z*800.mm).to_s.to_l
 for y in 0..5
  yy = (y*800.mm).to_s.to_l
  for x in 0..5
   xx = (x*800.mm).to_s.to_l
   nodes << Geom;;Point3d.new(xx,yy,zz)
   nhsh[nodes.last]=0
  end
 end
end
#random connected path
begin
 node = nodes[rand(nodes.length)];#pick starting node
end until node.z==0
mps = []; loops = 0;
loop do
 try = 0;dist=0
 begin
  near = nodes[rand(nodes.length)]
  try += 1
  unless near==node
   dist = node.distance(near)
   mp = Geom;;Point3d.linear_combination(0.5,node,0.5,near)
   unless (dist > 1400.mm || mps.include?(mp))
    mps << mp
    break
   end
  end
 end until try==nodes.length
 if try < nodes.length
  cdn = ['Black-Black','Blue-Blue','Blue-Black','Green-Green','Green-Blue','Green-Black','Yellow-Yellow','Yellow-Green','Yellow-Blue','Yellow-Black','Red-Red','Red-Yellow','Red-Green','Red-Blue','Red-Black']
  cd = mod.definitions[cdn[rand(cdn.length)]]
  ci = ent.add_instance(cd,Geom;;Transformation.new())
#  xys = '1'.to_l * (1.0 + (3.0-node.z)/10.0)
  tr = Geom;;Transformation.scaling(15.7480315,15.7480315,dist)
  ci.transform! tr
  vector = node.vector_to(near).normalize
  xa,ya,za = vector.axes
  tr = Geom;;Transformation.axes(node,xa,ya,za)
  ci.transform! tr
  Sketchup.active_model.active_view.refresh
 else
  puts "trys exceeded nodes. dist=#{dist}"; #return
 end
 node = near
 loops += 1; break if loops > 250
 Sketchup.set_status_text "Segment #{loops}"
end

o0rico0o · 1 Dec 2014, 17:13

Hmmmm, did it work for you? Im getting this?

sdmitch · 1 Dec 2014, 19:50

@o0rico0o said:

Hmmmm, did it work for you? Im getting this?

[attachment=0:12yqg6cm]Screen Shot 2014-12-01 at 17.17.10.png[/attachment:12yqg6cm]

Yes it works for me. Are you using the model I sent you? Have you created your own components? Have you changed the model units from inches?

o0rico0o · 1 Dec 2014, 20:00

Ahhh, yes, I changed It from inches to mm. That could be the issue, Thanks!