Help Faking Ambient Occlusion!

[renderiza]

Added the following code to the one above one to make script work on some solid objects that are simple but I need to find a solution that works every time.

 
znormal = face.normal.z
if znormal == 1 || znormal == -1
    next
end

Note: Ok the above code is too bad of an idea and will not use it at all.

[renderiza]

Hi, here is my progress so far...

model = Sketchup.active_model
sel = model.selection
ents = model.active_entities
faces = ents.grep(Sketchup;;Face)
outer_edge = []

faces.each do |face|
    loop = face.outer_loop
    borders = loop.edges

    outer_edge << borders
    outer_edge.flatten!
end

outer_edge.each do |edge|
    status = sel.contains? edge   
    if (status)
        edge.hidden = false
        sel.remove edge
    else
        edge.hidden = true
        sel.add edge
    end
end

What I need now is to find a way to hide the lines that are facing outward...Any ideas?

Note Update: I was testing code with non solid objects only and was not aware that it doesn't work with solid objects. Need to rethink this through again...oh well!

[Anton_S]

@renderiza said:

What I need now is to find a way to hide the lines that are facing outward...Any ideas?

Maybe this will help: Highlight edges in profile

[renderiza]

Thank you Anton_S I will take a look at it!

[renderiza]

Hi, here is another WIP and I am happy with the progress so far. The following code does an ok job with vertical line and now I need to work on horizontal lines.

Anton_S the code you posted by TIG helpd me find this "faces = edge.faces " which was very usefull so thank you.

model = Sketchup.active_model
sel = model.selection
ents = model.active_entities
edges = ents.grep(Sketchup;;Edge)

edges.each do |edge|

    faces = edge.faces
    faceone = faces.first
    facetwo = faces.last

    f1nx = faceone.normal.x
    f1ny = faceone.normal.y
    f1nz = faceone.normal.z

    f2nx = facetwo.normal.x
    f2ny = facetwo.normal.y
    f2nz = facetwo.normal.z
	
    #######################
    ## NE Vertical Lines ##
    #######################
    if f1nx == 1 and f2ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

    if f2nx == 1 and f1ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y
            edge.hidden = true
        else
	    edge.hidden = false
        end
    end
	
    #######################
    ## SE Vertical Lines ##
    #######################
    if f1nx == 1 and f2ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

    if f2nx == 1 and f1ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

    #######################
    ## SW Vertical Lines ## 
    #######################
    if f1nx == -1 and f2ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

    if f2nx == -1 and f1ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

    #######################
    ## NW Vertical Lines ##
    #######################
    if f1nx == -1 and f2ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

    if f2nx == -1 and f1ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y
            edge.hidden = true
        else
            edge.hidden = false
        end
    end

end

If anyone has any suggestions to better my code I am all ears...cheers!

[renderiza]

WIP - 7/26/2013

Hi, this is an update to deal with all vertical lines and it should now work 100% of the time. I still need to work of top & bottom horizontal lines but I imaging it should be easier than vertical lines. Ok here is the code so far...

model = Sketchup.active_model
sel = model.selection
ents = model.active_entities
edges = ents.grep(Sketchup;;Edge)

edges.each do |edge|

    faces = edge.faces
    faceone = faces.first
    facetwo = faces.last

    areaone = faceone.area
    areatwo = facetwo.area

    f1nx = faceone.normal.x
    f1ny = faceone.normal.y
    f1nz = faceone.normal.z

    f2nx = facetwo.normal.x
    f2ny = facetwo.normal.y
    f2nz = facetwo.normal.z

    #######################
    ## NE Vertical Lines ##
    #######################
    if f1nx == 1 and f2ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## N ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        #######
        ## E ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

    end

    if f2nx == 1 and f1ny == 1 and
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## N ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        #######
        ## E ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
    end

    #######################
    ## SE Vertical Lines ##
    #######################
    if f1nx == 1 and f2ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end
        #######
        ## E ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

         if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
    end

    if f2nx == 1 and f1ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## E ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

         if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

    end

    #######################
    ## SW Vertical Lines ##
    #######################
    if f1nx == -1 and f2ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## W ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
               edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
               edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
              edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
              edge.hidden = true
            end
        end
    end

    if f2nx == -1 and f1ny == -1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## W ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
       end

       if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
               edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
              edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
              edge.hidden = true
            end
        end

    end

    #######################
    ## NW Vertical Lines ##
    #######################
    if f1nx == -1 and f2ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## W ##
        #######
        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        #######
        ## N ##
        #######
        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
        
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
    end

    if f2nx == -1 and f1ny == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        else
            edge.hidden = false
        end

        #######
        ## W ##
        #######
        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        #######
        ## N ##
        #######
        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

    end

    ######################################
    ## Edges with more than three faces ##
    ######################################
    if faces[2]
        edge.hidden = false
    end

    #########################
    ## Edges with one face ##
    #########################
    if faces[1] == nil
        edge.hidden = true
    end

end

[renderiza]

Hi, this is another attempt and it seems to be working quite well with the test I have made so far. I am now wondering how to make the code work with faces that are on an angle in respect to the xyz axis.

If anyone has a clue I am all ears...here is the code so far

model = Sketchup.active_model
sel = model.selection
ents = model.active_entities
edges = ents.grep(Sketchup;;Edge)

edges.each do |edge|

    faces = edge.faces
    faceone = faces.first
    facetwo = faces.last

    areaone = faceone.area
    areatwo = facetwo.area

    f1nx = faceone.normal.x
    f1ny = faceone.normal.y
    f1nz = faceone.normal.z

    f2nx = facetwo.normal.x
    f2ny = facetwo.normal.y
    f2nz = facetwo.normal.z

	boundboxone = faceone.bounds
	centerone = boundboxone.center
	boundboxtwo = facetwo.bounds
	centertwo = boundboxtwo.center

	#############################
	## ZN Top Horizontal Lines ##
	#############################
	if f1nz == 1 and f2ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.y < centertwo.y
           edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.y < centertwo.y
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.y > centertwo.y
           edge.hidden = true
        end
	end

	if f2nz == 1 and f1ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.y > centertwo.y
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.y > centertwo.y
			edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.y < centertwo.y
            edge.hidden = true
        end
	end

	#############################
	## ZE Top Horizontal Lines ##
	#############################
	if f1nz == 1 and f2nx == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.x < centertwo.x
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end
	end

	if f2nz == 1 and f1nx == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.x > centertwo.x
				edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end
	end

	#############################
	## ZS Top Horizontal Lines ##
	#############################
	if f1nz == 1 and f2ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.y > centertwo.y
           edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.y > centertwo.y
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.y < centertwo.y
           edge.hidden = true
        end
	end

	if f2nz == 1 and f1ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.y < centertwo.y
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.y < centertwo.y
				edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.y > centertwo.y
            edge.hidden = true
        end
	end

	#############################
	## ZW Top Horizontal Lines ##
	#############################
	if f1nz == 1 and f2nx == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.x > centertwo.x
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end
	end

	if f2nz == 1 and f1nx == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.x < centertwo.x
			edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end
	end

	######################################
	######################################
	######################################

	################################
	## ZE Bottom Horizontal Lines ##
	################################
	if f1nz == -1 and f2nx == 1
        boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.x < centertwo.x
			edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end
	end

	if f2nz == -1 and f1nx == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.x > centertwo.x
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end
	end

	################################
	## ZN Bottom Horizontal Lines ##
	################################
	if f1nz == -1 and f2ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.z < centertwo.z and centerone.y < centertwo.y
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.y < centertwo.y
			edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.y > centertwo.y
            edge.hidden = true
        end
	end

	if f2nz == -1 and f1ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.y > centertwo.y
            edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.y > centertwo.y
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.y < centertwo.y
            edge.hidden = true
        end
	end

	################################
	## ZW Bottom Horizontal Lines ##
	################################
	if f1nz == -1 and f2nx == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.x > centertwo.x
			edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end
	end

	if f2nz == -1 and f1nx == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.x < centertwo.x
            edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.x < centertwo.x
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.x > centertwo.x
            edge.hidden = true
        end
	end

	################################
	## ZS Bottom Horizontal Lines ##
	################################
	if f1nz == -1 and f2ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z < centertwo.z and centerone.y > centertwo.y
            edge.hidden = true
        end

        if centerone.z > centertwo.z and centerone.y > centertwo.y
			edge.hidden = true
        end

		if centerone.z < centertwo.z and centerone.y < centertwo.y
            edge.hidden = true
        end
	end

	if f2nz == -1 and f1ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.z > centertwo.z and centerone.y < centertwo.y
            edge.hidden = true
        end

        if centerone.z < centertwo.z and centerone.y < centertwo.y
			edge.hidden = true
        end

		if centerone.z > centertwo.z and centerone.y > centertwo.y
            edge.hidden = true
        end
	end

	######################################
    	######################################
	######################################

    #######################
    ## NE Vertical Lines ##
    #######################
    if f1nx == 1 and f2ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

		if centerone.y < centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        end

        #######
        ## N ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        #######
        ## E ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end
    end

    if f2nx == 1 and f1ny == 1 and
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        end

        #######
        ## N ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        #######
        ## E ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
    end

    #######################
    ## SE Vertical Lines ##
    #######################
    if f1nx == 1 and f2ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        end

        #######
        ## E ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

         if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
    end

    if f2nx == 1 and f1ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        end

        #######
        ## E ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

         if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

    end

    #######################
    ## SW Vertical Lines ##
    #######################
    if f1nx == -1 and f2ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        end

        #######
        ## W ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
               edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
               edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
              edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
              edge.hidden = true
            end
        end
    end

    if f2nx == -1 and f1ny == -1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        end

        #######
        ## W ##
        #######
        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
       end

       if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
               edge.hidden = true
            end
        end

        #######
        ## S ##
        #######
        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
              edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
              edge.hidden = true
            end
        end
    end

    #######################
    ## NW Vertical Lines ##
    #######################
    if f1nx == -1 and f2ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            edge.hidden = true
        end

        #######
        ## W ##
        #######
        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        #######
        ## N ##
        #######
        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y < centertwo.y and centerone.x < centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end
    end

    if f2nx == -1 and f1ny == 1
		boundboxone = faceone.bounds
        centerone = boundboxone.center
        boundboxtwo = facetwo.bounds
        centertwo = boundboxtwo.center

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            edge.hidden = true
        end

        #######
        ## W ##
        #######
        if centerone.y < centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone < areatwo
                edge.hidden = true
            end
        end

        #######
        ## N ##
        #######
        if centerone.y > centertwo.y and centerone.x < centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end

        if centerone.y > centertwo.y and centerone.x > centertwo.x
            if areaone > areatwo
                edge.hidden = true
            end
        end
    end

    ######################################
    ######################################
    ######################################
    ######################################

    ######################################
    ## Edges with more than three faces ##
    ######################################
    if faces[2]
        edge.hidden = false
    end

    #########################
    ## Edges with one face ##
    #########################
    if faces[1] == nil
        edge.hidden = true
    end
	
    #######################
    ## Edges inside face ##
    #######################
    if f1nz == 1 and f2nz == 1
        edge.hidden = true
    end
    
    if f1nz == -1 and f2nz == -1
        edge.hidden = true
    end
    
    ###

    if f1nx == 1 and f2nx == 1
        edge.hidden = true
    end

    if f1nx == -1 and f2nx == -1
        edge.hidden = true
    end

    ###

    if f1ny == 1 and f2ny == 1
        edge.hidden = true
    end

    if f1ny == -1 and f2ny == -1
        edge.hidden = true
    end

end

[renderiza]

If anyone is interest I updated the code above with much better one...cheers!

[cleblanc]

I would be interested. Could you post the new version?

Thanks!

Chris

[renderiza]

I still plan to keep working on this and will post future progress. The best case scenario will be to make it work on faces that have angle...so far my attempts have failed in solving this but will keep trying.