How to cut from object

sdmitch

Hmm, I have one main method, one method for rectangle blocks and next method for cylinders, but in every of those methods I have
group = Sketchup.active_model.active_entities.add_group() entities = group.entities
so then i.e.
circle = entities.add_circle(center, dir, radius)
or
entities.add_line(ptA, ptB) etc bottom = entities.add_face(ptA, ptB, ptC, ptD)
So this is the wrong solution?
If I understand correctly, I need have group = Sketchup.active_model.active_entities.add_group() only in main method and then passed as a variable to other methods?

You have a group containing a rectangular block that you you want to "drill" holes in. In order to do that, you have to add a group inside that group to contain the circle defining the drill hole. After exploding the group containing the circle, the original group will contain the block, the drill hole outline, and hopefully the face that is to be pushpulled to create the drill hole.

ado130

So there are 2 solutions for this (I think)

save somewhere the group where will be notch
find that group somehow
because, when I do a dril, I'm using this

		group = nil
		face = nil
		Sketchup.active_model.entities.each{|g|
			next unless g.is_a?(Sketchup;;Group)
			g.entities.each{|f|
				next unless f.is_a?(Sketchup;;Face)
				if f.classify_point(center) == Sketchup;;Face;;PointInside then
					group = g
					face = f
				end
			}	
		}

2.) Exist a way how to find "my" group, where is the rectangular block, when the center point is outside that block?

sdmitch

@ado130 said:

So there are 2 solutions for this (I think)

save somewhere the group where will be notch

find that group somehow
because, when I do a dril, I'm using this

		group = nil
> 		face = nil
> 		Sketchup.active_model.entities.each{|g|
> 			next unless g.is_a?(Sketchup;;Group)
> 			g.entities.each{|f|
> 				next unless f.is_a?(Sketchup;;Face)
> 				if f.classify_point(center) == Sketchup;;Face;;PointInside then
> 					group = g
> 					face = f
> 				end
> 			}	
> 		}

2.) Exist a way how to find "my" group, where is the rectangular block, when the center point is outside that block?

Perhaps

if center.on_plane f.plane then
	group = g
	face = f
end

ado130

It almost works, but the result is

def notch(x, y, z, radiuses, depths, directions)
	model = Sketchup.active_model 
	countOfNotch = x.length.to_i
	countOfNotch.times do |i|
		
		center = [x[i], y[i], z[i]].map(&;to_f)		
		radius = radiuses[i]
		depth = depths[i]
		direction = directions[i]
		
		case direction
			when "N"
				dir = Geom;;Vector3d.new(0,0,1)
			when "E"
				dir = Geom;;Vector3d.new(-1,0,0)
			when "S"
				dir = Geom;;Vector3d.new(0,0,-1)
			when "W"
				dir = Geom;;Vector3d.new(1,0,0)		
			when "F"
				dir = Geom;;Vector3d.new(0,-1,0)	
			when "B"
				dir = Geom;;Vector3d.new(0,1,0)				
			else
				dir = Geom;;Vector3d.new(0,0,1)		
		end		
		
		group = nil
		Sketchup.active_model.entities.each{|g|
			next unless g.is_a?(Sketchup;;Group)
			g.entities.each{|f|
				next unless f.is_a?(Sketchup;;Face)
				if center.on_plane? f.plane then
					group = g
				end
			}	
		}	
		gents = group.entities
		active_faces = gents.grep(Sketchup;;Face);
		circle_group = gents.add_group; cge = circle_group.entities;
		edges = cge.add_circle(center, dir, radius);
		circle_group.explode;
		circle_face = (gents.grep(Sketchup;;Face) - active_faces)[0];
		circle_face.pushpull(-depth)		
	end
end

It works only if the cylinder's face is whole on the block.

It "works", if I have two blocks on each other

sdmitch

In the second image, are both blocks in the same group? If so two new faces will be created and only one is being pushpulled.

ado130

No, they aren't. I know it's a problem and if I will do drill into 2 blocks, they need to be in the same group. But for now, the problem is first image. It looks like, pushpull tools pushpull the block and not cylinder(drill/notch).

It works!! I had a little bug in my input file.
So final code is

		group = nil
		Sketchup.active_model.entities.each{|g|
			next unless g.is_a?(Sketchup;;Group)
			g.entities.each{|f|
				next unless f.is_a?(Sketchup;;Face)
				if center.on_plane? f.plane then
					group = g
				end
			}	
		}	
		gents = group.entities
		active_faces = gents.grep(Sketchup;;Face)
		circle_group = gents.add_group; cge = circle_group.entities
		edges = cge.add_circle(center, dir, radius)
		circle_group.explode
		circle_face = (gents.grep(Sketchup;;Face) - active_faces)[0]
		circle_face.pushpull(-depth)	
		togos = [] 
		edges.each{|edge| togos << edge unless edge.faces[0] }
		model.active_entities.erase_entities(togos) if togos[0]

Many many many thanks to both!
Maybe a question about the second image, is it possible do it somehow?
i.e.: Even if they are 4 blocks next to each (2x2 matrix) and create a hole in the middle.
It occurred to me, try to apply this method twice (or more, if there will be more blocks next to each other).
Or maybe 2nd solution, make a temporary group with all common groups/faces where will be a hole.

Edit:
So, I edited it

		groups = []
		i = 0
		Sketchup.active_model.entities.each{|g|
			next unless g.is_a?(Sketchup;;Group)
			g.entities.each{|f|
				next unless f.is_a?(Sketchup;;Face)
				if center.on_plane? f.plane then
					groups.each {|x| next if g == x}
					groups[i] = g
					i += 1
				end
			}	
		}	
		
		groups = groups.uniq
				
		countOfGroups = groups.length.to_i
		countOfGroups.times do |i|
			group = groups[i]
			gents = group.entities
			active_faces = gents.grep(Sketchup;;Face)
			circle_group = gents.add_group; cge = circle_group.entities
			edges = cge.add_circle(center, dir, radius)
			circle_group.explode
			circle_face = (gents.grep(Sketchup;;Face) - active_faces)[0]
			next if circle_face == nil
			circle_face.pushpull(-depth)	
			togos = [] 
			edges.each{|edge| togos << edge unless edge.faces[0] }
			model.active_entities.erase_entities(togos) if togos[0]		
		end

It "works", but there is a problem, if I need do a drill over 3 (more) blocks.
Or when I have 4 blocks, etc..

I found that after this circle_face = (gents.grep(Sketchup::Face) - active_faces), there are two faces, so I tried ".last", it helped, but still don't work at well.

Aby ideas?

ado130

It seems that it works. Is it correct way?
Just one question, how can I delete the black lines?, or hide them.

def drill(x, y, z, radiuses, depths, directions)
	model = Sketchup.active_model 
	countOfDrills = x.length.to_i
	countOfDrills.times do |i|
		
		center = [x[i], y[i], z[i]].map(&;to_f)		
		radius = radiuses[i]
		depth = depths[i]
		direction = directions[i]
		
		case direction
			when "N"
				dir = Geom;;Vector3d.new(0,0,1)
			when "E"
				dir = Geom;;Vector3d.new(-1,0,0)
			when "S"
				dir = Geom;;Vector3d.new(0,0,-1)
			when "W"
				dir = Geom;;Vector3d.new(1,0,0)		
			when "F"
				dir = Geom;;Vector3d.new(0,-1,0)	
			when "B"
				dir = Geom;;Vector3d.new(0,1,0)				
			else
				dir = Geom;;Vector3d.new(0,0,1)		
		end		
		
		groups = []
		i = 0
		Sketchup.active_model.entities.each{|g|
			next unless g.is_a?(Sketchup;;Group)
			g.entities.each{|f|
				next unless f.is_a?(Sketchup;;Face)
				if center.on_plane? f.plane then
					groups.each {|x| next if g == x}
					groups[i] = g
					i += 1
				end
			}	
		}	
		
		groups = groups.uniq
		
		countOfGroups = groups.length.to_i
		countOfGroups.times do |i|
			group = groups[i]
			gents = group.entities
			activeFaces = gents.grep(Sketchup;;Face)
			circleGroup = gents.add_group; cge = circleGroup.entities
			edges = cge.add_circle(center, dir, radius)
			circleGroup.explode
			circleFace = (gents.grep(Sketchup;;Face) - activeFaces).last
			next if circleFace == nil
			normal = circleFace.normal
			activeFaces = gents.grep(Sketchup;;Face)
			circleFace.pushpull(-depth)
			deleteFace = (gents.grep(Sketchup;;Face) - activeFaces)[0]
			if deleteFace.normal == normal then
				deleteFace.erase!	
			end
		end
	end
end

sdmitch

@ado130 said:

Just one question, how can I delete the black lines?, or hide them.

Try this

groups = groups.uniq
countOfGroups = groups.length.to_i
countOfGroups.times do |i|
 group = groups[i]
 gents = group.entities
 activeFaces = gents.grep(Sketchup;;Face)
 circleGroup = gents.add_group; cge = circleGroup.entities
 edges = cge.add_circle(center, dir, radius)
 circleGroup.explode;
 (gents.grep(Sketchup;;Face) - activeFaces).each{|circleFace|
  next if center.distance(circleFace.bounds.center) > radius
  circleFace.pushpull(-depth)
 ]
 remove = gents.grep(Sketchup;;Edge).find_all{|e|e.faces.length<2}
 gents.erase_entities(remove.reverse)
end

cut from object.gif

ado130

It seems that it works too. Thanks!
But black lines are still there.
You have there "]", I think, it should be "}"?

sdmitch

@ado130 said:

It seems that it works too. Thanks!
But black lines are still there.
You have there "]", I think, it should be "}"?

Yes, you are right. Sorry about that.

The black vertical lines in the 'drill hole'?

ado130

Yeah, you're right, but I meant black lines in rectangular blocks (rather, all lines).

sdmitch

@ado130 said:

Yeah, you're right, but I meant black lines in rectangular blocks.

Well, if you didn't want them, why did you create then in the first place.

groups = groups.uniq
countOfGroups = groups.length.to_i
countOfGroups.times do |i|
	group = groups[i]; group.make_unique
	gents = group.entities
	activeFaces = gents.grep(Sketchup;;Face)
	activeEdges = gents.grep(Sketchup;;Edge);#<-- save active edges
	circleGroup = gents.add_group; cge = circleGroup.entities
	edges = cge.add_circle(center, dir, radius)
	circleGroup.explode;
	(gents.grep(Sketchup;;Face) - activeFaces).each{|circleFace|
		next if center.distance(circleFace.bounds.center) > radius
		circleFace.pushpull(-depth)
	}
   #remove unused circle edges
	remove = gents.grep(Sketchup;;Edge).find_all{|e|e.faces.length<2}
	gents.erase_entities(remove.reverse)
	# hide vertical edges in drill hole
	soften = (gents.grep(Sketchup;;Edge)-activeEdges).find_all{|e|e.line[1].parallel?(dir) && !e.soft?}
	soften.each{|e|e.soft=e.smooth=true}
	# remove co-planar edges
	remove = gents.grep(Sketchup;;Edge).find_all{|e|(e.faces.length>=2 && e.faces.find_all{|f|f.normal.parallel?(e.line[1].axes[1])}.length==2)}
	gents.erase_entities(remove.reverse)

ado130

Sorry for the delayed response. It looks fine, thanks again!