Added hex grid generation code

hexgrid.scad

@@ -0,0 +1,20 @@
+module hexGrid(fillRatio=0.5, gridSize=10, height=1, center=false, rows=3, columns=4) {
+    colMulti = 0.752;    
+    rowMulti = 0.86;
+    offset = [
+        (gridSize*colMulti)*((columns-1)/2),
+        (gridSize*rowMulti)*((rows-.5)/2),
+        0] * -1;
+    translate(offset){
+        for(row= [0:rows-1]){
+            translate([0,gridSize*row*rowMulti,0])
+            for(col=[0:columns-1]){
+                translate([gridSize*col*colMulti,col%2?(gridSize*rowMulti)/2:0,0])
+                cylinder(h=height,d=gridSize*fillRatio, $fn=6, center=center);
+            }
+            
+        }
+    }
+}
+
+hexGrid(fillRatio=0.8, gridSize=10, height=10, center=false);

mattlib.scad

@@ -4,4 +4,5 @@ include <../Lib/mirrorcopy.scad>;
 include <../Lib/extrusion.scad>;
 include <../Lib/pcd.scad>;
 include <../Lib/metric_bolts.scad>;
-include <../Lib/corner_radiuser.scad>;
+include <../Lib/corner_radiuser.scad>;
+include <../Lib/hexgrid.scad>;