Propeller.rb

class Propeller
	@geom
	@airfoil

	@keyRadii

	@name

	@radius

	@hubFoil
	
	def initialize	
		
	end

	def name
		@name
	end

	def translate radius
	end
	def getHubFoil
		xFactor = @radius*0.08
		yFactor = @radius*0.2
		airfoilXYZ(translateShape(scaleShapeXY(@airfoil,xFactor,yFactor),xFactor/2.0,0),0)
	end

	def getFlatHub
		radius = (0.012*@radius).round(0)
		hub = roundRect((0.076*@radius).round(0)-radius/2.0,radius,true).clone
		hub1 = Marshal.load(Marshal.dump(hub))
		first = airfoilXYZ(hub,0)
		second = airfoilXYZ(hub1,0.06)
		ret = [first,second]
		return ret
	end

	def rotate radius
		r =  @geom[2][@geom[0].find_index(radius)]#interpPointInSet(radius,[@geom[0],@geom[2]])# passing in radius and cloud of [radius,chord]
		#p r
		return r
	end

	def scale radius
		#index = @
		#print "index #{@geom[0].find_index(radius)}, radius #{radius}\n"
		a = @geom[1][@geom[0].find_index(radius)]
		return a*@radius
		#interpPointInSet(radius,[@geom[0],@geom[1]])*@radius
	end

	def stiffness_modifier radius, chord
		1.0
		#custom-ish for 3d printing
	end

	def getFoil radius # returns pt cloud [[x,y] x n]
		scaleFactor = scale(radius)
		#p translate(radius)
		return translateShape(
			rotPoints(
				scaleShapeXY(@airfoil,scaleFactor,stiffness_modifier(radius,scaleFactor)), #why so many f(radius)??
				rotate(radius)),
			translate(radius)[0],
			translate(radius)[1])
	end

	def airfoilXYZ airfoil1,radius #returns array in [all x, all y, all z]
		#print "\n\n"
		return ((airfoil1.map {|n| n<<radius*@radius}).transpose).dup
	end
	def getXSections
		xSections = getHubFoil() #gethubfoil = [foil1, foil2]
		@keyRadii.each do |radius| #because we aren't interpolating we don't really need to use the key radii
			foilWithZ = airfoilXYZ(getFoil(radius),radius)
			xSections << foilWithZ
		end
		return xSections	
	end
end