
## Open an URL with Action Manager

Since any Javascript can be called when executing code action with the action manager it is straight forward to open a new web page using 

```javascript
window.open(URL)
```
to open a new window or

```javascript
window.location = URL
```
to replace the contants of the current window.

<Playground id="#INB624#1" title="Open URL On Single Mesh Click" description=""/>
<Playground id="#INB624#2" title="Open URL On Mesh Click Of Multiple Meshes" description=""/>


## Displays a Path3D Curve

This snippet displays a path3D curve and for on each point its tangent, normal and binormal in red, green and blue respectively.
The size parameter, default 0.5, sets the length for the tangents, normals and binormals.

```javascript
function showPath3D(path3d, size) {
  size = size || 0.5;
  const curve = path3d.getCurve();
  const tgts = path3d.getTangents();
  const norms = path3d.getNormals();
  const binorms = path3d.getBinormals();
  let vcTgt, vcNorm, vcBinorm;
  const line = BABYLON.MeshBuilder.CreateLines("curve", { points: curve }, scene);
  for (let i = 0; i < curve.length; i++) {
    vcTgt = BABYLON.MeshBuilder.CreateLines("tgt" + i, { points: [curve[i], curve[i].add(tgts[i].scale(size))] }, scene);
    vcNorm = BABYLON.MeshBuilder.CreateLines("norm" + i, { points: [curve[i], curve[i].add(norms[i].scale(size))] }, scene);
    vcBinorm = BABYLON.MeshBuilder.CreateLines("binorm" + i, { points: [curve[i], curve[i].add(binorms[i].scale(size))] }, scene);
    vcTgt.color = BABYLON.Color3.Red();
    vcNorm.color = BABYLON.Color3.Green();
    vcBinorm.color = BABYLON.Color3.Blue();
  }
}
```

## Playground

<Playground id="#2IX4FB" title="Display Path3D Info" description=""/>



## Show Mesh Vertex Normals
This snippet allows you to add lines showing the normals for each vertex of a mesh. The colour and size of the lines can be set.

```javascript
function showNormals(mesh, size, color, sc) {
    var normals = mesh.getVerticesData(BABYLON.VertexBuffer.NormalKind);
    var positions = mesh.getVerticesData(BABYLON.VertexBuffer.PositionKind);
    color = color || BABYLON.Color3.White();
    sc = sc || scene;
    size = size || 1;

    var lines = [];
    for (let i = 0; i < normals.length; i += 3) {
        var v1 = BABYLON.Vector3.FromArray(positions, i);
        var v2 = v1.add(BABYLON.Vector3.FromArray(normals, i).scaleInPlace(size));
        lines.push([v1.add(mesh.position), v2.add(mesh.position)]);
    }
    var normalLines = BABYLON.MeshBuilder.CreateLineSystem("normalLines", {lines: lines}, sc);
    normalLines.color = color;
    return normalLines;
}
```
## Playground

<Playground id="#1ENDNT" title="Displaying Vertex Normals" description=""/>

Open A URL On An Event

Open an URL with Action Manager