Update backup.html

backup.html

@@ -19,18 +19,25 @@
             camera.attachControl(canvas, true);
 
             // Create a DNA strand
-            var dnaStrand = BABYLON.MeshBuilder.CreateTorusKnot("dnaStrand", {
-                radius: 1.5,
-                tube: 0.3,
-                radialSegments: 32,
-                tubularSegments: 64,
-                p: 2,
-                q: 3
+            var dnaStrand = BABYLON.MeshBuilder.CreateTube("dnaStrand", {
+                path: [
+                    new BABYLON.Vector3(0, 0, 0),
+                    new BABYLON.Vector3(0, 2, 0),
+                    new BABYLON.Vector3(2, 2, 0),
+                    new BABYLON.Vector3(2, 0, 0),
+                    new BABYLON.Vector3(2, -2, 0),
+                    new BABYLON.Vector3(0, -2, 0),
+                    new BABYLON.Vector3(0, 0, 0)
+                ],
+                radiusFunction: function(i) {
+                    return 0.1 + Math.abs(2 * Math.sin(i * 10));
+                },
+                tessellation: 128,
+                updatable: true
             }, scene);
 
             // Create the material for the DNA strand
             var dnaMaterial = new BABYLON.StandardMaterial("dnaMaterial", scene);
-            dnaMaterial.diffuseTexture = new BABYLON.Texture("https://i.imgur.com/06QxEyj.jpg", scene);
             dnaMaterial.emissiveColor = new BABYLON.Color3(0.1, 0.1, 0.1);
             dnaMaterial.specularColor = new BABYLON.Color3(0.2, 0.2, 0.2);