From 4ac6f9232e1bc986e9898eb76abb6c317b712be5 Mon Sep 17 00:00:00 2001
From: Michael Krelin <hacker@klever.net>
Date: Mon, 13 Jun 2016 16:50:42 +0000
Subject: dualism: airguides

---
diff --git a/fanduct.scad b/fanduct.scad
index fc57c57..c402312 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -127,7 +127,7 @@ module fanduct(type=type,ductshape=ductshape,dual=dual) {
     translate([xy[0],xy[1],0])
     cylinder(d=2*extrusion_width,h=2*fanduct_shell+inlet_h,$fn=6);
    }
-   xyxyxy=concat(xyxy,[[0,0]]);
+   xyxyxy=concat(xyxy,[[0,dual?nozzles_apart/2:0]]);
    for(i=[0:1:len(xyxyxy)-2])
     hull() for(j=[i,i+1]) pin(xyxyxy[j]);
   }
@@ -235,6 +235,18 @@ module fanduct(type=type,ductshape=ductshape,dual=dual) {
      translate([0,0,fanduct_shell]) cylinder(d=fanduct_w,h=fanduct_h/2-fanduct_shell/2);
      translate([0,-nozzles_apart/2,-fanduct_elevation+fanduct_blowtarget]) sphere(d=.1);
     }
+   }else if(what=="airguides") {
+    far = fanduct_ir+fanduct_shell+fanduct_w;
+    near = fanduct_ir;
+    union() {
+     for(my=[0,1]) mirror([0,my,0]) {
+      guideline([ [-far             ,0], [0,0] ]);
+      guideline([ [-far             ,inlet_w/2/4],
+                  [-near            ,nozzles_apart/2] ]);
+      guideline([ [-near-fanduct_w/3,nozzles_apart/2+near+fanduct_w/3] ]);
+      guideline([ [0                ,nozzles_apart/2+near+fanduct_w/2] ]);
+     }
+    }
    }
   }
 
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