Module: CrystalScad::ScrewThreads

Included in:
CrystalScad
Defined in:
lib/crystalscad/ScrewThreads.rb

Overview

This file is part of CrystalScad.

CrystalScad is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

CrystalScad is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with CrystalScad.  If not, see <http://www.gnu.org/licenses/>.

Defined Under Namespace

Classes: ScrewThread

Instance Method Summary collapse

Instance Method Details

#create_bolts(face, obj1, obj2, args = {}) ⇒ Object 



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# File 'lib/crystalscad/ScrewThreads.rb', line 88

def create_bolts(face,obj1,obj2,args={})
	# make a obj1-=obj2 with bolts corresponding to the height of obj1
	
	if face == nil or obj1 == nil or obj2 == nil
		raise "usage: create_bolts(face,obj1,obj2,args={})  - args can include (obj1.)height and bolt_height"
		return			
	end			

	# we need to know obj1 height (if not supplied by user)
	height ||= args[:height]			
	case face.to_s
		when "top"
			height ||= obj1.z rescue nil
		when "bottom"
			height ||= obj1.z rescue nil
		when "left"
			height ||= obj1.x rescue nil
		when "right"
			height ||= obj1.x rescue nil
		when "front"
			height ||= obj1.y rescue nil
		when "back"
			height ||= obj1.y rescue nil
	end		
	height ||= obj1.height rescue nil
	if height == nil
		raise "the object we're substracting from doesn't have a height defined; please define manually"
		return
	end			
	
	# lets check if the obj2 responds to the threads_[face] method
	
	meth = "threads_#{face}"
	
	unless obj2.respond_to?(meth)
		raise "The object you're trying to get bolts from doesn't supply any on the face '#{face}'. Please add a method #{meth} to this object"				
		return
	end
	holes = obj2.send(meth)		
	
	return if holes == nil

	# let the user either define bolt_heights as integer, array or none (will be guessed)
	if args[:bolt_height].kind_of? Array
		bolt_heights = args[:bolt_height]
		if bolt_heights.size != holes.size
			raise "object has #{holes.size} threads for bolts but you supplied #{bolt_heights.size}"
			return
		end
	else			
		bolt_heights = []
		holes.each do |hole|
			if args[:bolt_height]
				bolt_heights << args[:bolt_height] 
			else
				bolt_heights << (height+hole.depth).floor
			end
		end
	end

	ret = []
	holes.each_with_index do |hole,i|
		bolt = Bolt.new(hole.size,bolt_heights[i],washer:args[:washer])
	  case face
			when "top"
				bolt.transformations << Rotate.new(x:180)	
				bolt.transformations << Translate.new({x:hole.x,y:hole.y,z:hole.z+height})		
			when "bottom"
				bolt.transformations << Translate.new({x:hole.x,y:hole.y,z:hole.z})		
			when "left"
				bolt.transformations << Rotate.new(y:90)						
				bolt.transformations << Translate.new({x:hole.x,y:hole.y,z:hole.z})		
			when "right"
				bolt.transformations << Rotate.new(y:-90)						
				bolt.transformations << Translate.new({x:hole.x+height,y:hole.y,z:hole.z})		
			when "front"
				bolt.transformations << Rotate.new(x:-90)						
				bolt.transformations << Translate.new({x:hole.x,y:hole.y,z:hole.z})		
			when "back"
				bolt.transformations << Rotate.new(x:90)						
				bolt.transformations << Translate.new({x:hole.x,y:hole.y+height,z:hole.z})		
		end

		ret << bolt
	end
	
	ret
end