fix(example): refactored

examples/example.js

@@ -2,18 +2,26 @@ const { calc, default: Vector } = require('../lib');
 
 /* eslint-disable no-console */
 
+// create vector by numbers
 const pos = new Vector(5, 6, 7);
 const dir = new Vector(1, 0, 0);
 console.log('pos:', pos, ' dir:', dir);
+// pos: { [Number: 10.48] x: 5, y: 6, z: 7 }  dir: { [Number: 1] x: 1, y: 0, z: 0 }
 
+// or create vector by calculating other vectors and number
 const offsetA = new Vector(() => dir * 30 + pos);
 console.log('offsetA:', offsetA);
+// offsetA: { [Number: 36.19] x: 35, y: 6, z: 7 }
 
-const offsetB = calc(() => dir * 30 + pos);
+// calc two Vectors
+const offsetB = calc(() => dir * 20 + pos);
 console.log('offsetB:', offsetB);
+// offsetB: { [Number: 26.645825188948457] x: 25, y: 6, z: 7 }
 
+// compare length
 let way = offsetA;
 if (way > 1) {
   way = way.normalize();
 }
 console.log('way:', way);
+// way: { [Number: 1] x: 0.96, y: 0.16, z: 0.19 }