added paths2sections

src/paths2sections.scad

@@ -0,0 +1,24 @@
+/**
+* paths2sections.scad
+*
+* Given a list of paths, this function will return all cross-sections described by those paths.
+*
+* @copyright Justin Lin, 2017
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-paths2sections.html
+*
+**/
+
+function paths2sections(paths) =
+    let(
+        leng_path = len(paths[0]),
+        leng_paths = len(paths)
+    )
+    [
+        for(i = [0:leng_path - 1])
+            [
+                for(j = [0:leng_paths - 1])
+                    paths[j][i]
+            ] 
+    ];