fix verticals

2 files changed, 5 insertions, 1 deletions

diff --git a/catenary.lua b/catenary.lua
index abe18e1..70e128c 100644
--- a/catenary.lua
+++ b/catenary.lua
@@ -71,6 +71,11 @@ local function catenary(x1,y1, x2,y2, L)
 		y1,y2 = y2,y1
 	end
 
+	if math.abs(x1-x2) < 0.0001 then
+		x1 = x1 - 0.01
+		x2 = x2 + 0.01
+	end
+
 	local f = catenary0(x1,y1,x2,y2,L)
 	return plot(f, x1,x2)
 end
diff --git a/main.lua b/main.lua
index d1a84a8..e1d6748 100644
--- a/main.lua
+++ b/main.lua
@@ -44,7 +44,6 @@ end
 ports[3].wires = {ports[6]}
 ports[5].wires = {ports[7],ports[2]}
 
-
 local function wire_color(n)
 	local phi = (1+math.sqrt(5))/2
 	local h = (360*phi*n)%360