add geo/mesh class to contain repair utilities

src/kiri/slicer.js

@@ -26,8 +26,7 @@
         tracker = UTIL.pwait,
         newSlice = KIRI.newSlice,
         newOrderedLine = BASE.newOrderedLine,
-        beltfact = Math.cos(Math.PI/4),
-        ibeltfact = 1/beltfact;
+        beltfact = Math.cos(Math.PI/4);
 
     /**
      * Convenience method. Gets a Widget's points and calls slice()

src/kiri/widget.js

@@ -303,6 +303,11 @@ console.log/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
         }
     };
 
+    PRO.debugMesh = function(precision) {
+        let mesh = new base.Mesh({precision, vertices: this.getVertices().array});
+        return mesh;
+    };
+
     PRO.getVertices = function() {
         return this.mesh.geometry.attributes.position;
     };