Add roundTri module

HeatSink.scad

@@ -156,6 +156,25 @@ module tri(w, h) {
   ]);
 }
 
+/**
+  * A round triangle pointing along the X-Axis
+  *
+  * `w` width; length along X
+  * `h` height; Y size
+  * `r` corner radius
+  * `style` use "inner" for the included area or anything else for the `outer` area, this is the included area plus corner size
+  *
+  */
+module roundTri(w, h, r, style="inner") {
+  
+  _r = style == "inner" ? r : 0;
+  
+  hull () {
+    translate([_r, -h/2 + _r, 0]) circle(r=r);
+    translate([_r, h/2 - _r, 0]) circle(r=r);
+    translate([w - _r, 0, 0]) circle(r=r);
+  }
+}
 
 
 // length of the outlet
@@ -167,16 +186,20 @@ module funnel2D() {
   _y = hs_w/2 - fu_outlet_w;
 
   difference() {
-    union() {
+    
+    
+    
+    
+    /* union() {
       translate([0, _y, 0]) square([x, fu_outlet_w]);
       translate([0, -_y - fu_outlet_w, 0]) square([x, fu_outlet_w]);
       
       // air funnel split
       translate([x, 0, 0]) tri(_y*4, hs_w);
-    }
+    } */
 
     // air funnel split
-    translate([x, 0, 0]) tri(x*2, _y*2);
+    // translate([x, 0, 0]) tri(x*2, _y*2);
   }
 }