Working SVG export with offset to distinguish the triangles

README.md

@@ -1,2 +1,14 @@
 # scad-projects
 My OpenSCAD experimentations, 2D and 3D shapes.
+
+OpenSCAD is a very useful app to create 2D and 3D shapes from textual definitions. You can then export images, SVG for printing  or 3D formats for 3D printers.
+
+## Flexaedre "HyperQBS"
+
+Comments are mostly in french in this one.
+I made 2 versions: one simple in 2D.  
+
+The 3D version is more experimental. I tried to (un)fold the shape reproducing real paper movements. While the concept is interesting, it requires more computations. I did it with one triangle, not sure I will continue for the others ...
+
+Donc bref, 2 versions du flexahedre: une simple en 2D. Une experimentale construite en reproduisant le depliage en 3D (bien qu'intéressante conceptuellement ca demande trop de calcul). 
+

flexaedre-2D.scad

@@ -55,16 +55,16 @@ color ("Silver") {
 }
 
 // Optionnel (pour coller l'intérieur)
-color ("LightGrey") {
-
+color ("LightGrey") offset(delta=-1) {
+  
   translate([a,0,0]) 
     rotate(180-Aa-Ca)
     triangle_isocele(b, c);
 
-    rotate(-Ba-Ca-Aa)
+  rotate(-Ba-Ca-Aa)
     triangle_isocele(a, c);
 
-    rotate(-Ba)    
+  rotate(-Ba)    
     translate([b,0,0]) 
     rotate( -(90 +2*Ca -180) )
     triangle_isocele(b, c);