Adding a face mesh and face tracker

Start by adding a face tracker to your scene:

1. Click Add Object at the bottom of the Scene panel.
2. Select Face Tracker from the menu.

It'll be listed as faceTracker0 in the Scene panel.

Next, add a face mesh as a child of the face tracker. The face mesh is a 3D model of a face. It works with the face tracker to create a surface that reconstructs someone's expressions. We'll then use the blendshape to change the shape of the face mesh, creating the distorted effect.

To add the face mesh to your project:

1. Right-click on faceTracker0 in the Scene panel.
2. Select Add.
3. Select Face Mesh from the menu.

You'll see faceMesh0 in the Scene panel, and an object tracking the face in the Viewport and Simulator:

Applying the blendshapes

You’ll apply the blendshape to the face mesh. To do this:

1. Select the face mesh in the Scene panel.
2. Go to Deformation in the Inspector.
3. Click the + next to Deformation.
4. Select the faceDistortionPack.

Clear the Eyes and Mouth boxes

Before you adjust the blendshape, you'll need to clear the boxes next to Eyes and Mouth in the face mesh's properties. This will stop the blendshape from covering and distorting the openings for the eyes and mouth.

Adjusting the blendshape

Now you've added the blendshape, you'll see an option labeled Morph Object. There's a list of 14 options underneath:

You can adjust these to make all sorts of changes to the shape of the face - from adjusting the size of someone's eyes to completely changing the shape of the face.

Play around with the different options here, adjusting the sliders until you're happy with the effect.

Adding retouching

In Spark AR Studio a retouching effect is created by adding a material to a face mesh, and changing the Shader Type in the material to Retouching.

Add a face mesh

Start by adding another face mesh to the scene as a child of the face tracker:

1. Right click on the face tracker.
2. Select Add.
3. Select Face Mesh.

Create a material

Next create a material for the face mesh:

1. Select the face mesh in the Scene panel.
2. In the Inspector, click + next to Materials.
3. Select Create New Material to create a new material.

Here's how your project will look:

Now select the material to change the Shader Type. It'll be listed as material0 in the Assets panel. In the Inspector:

1. Change the Shader Type to Retouching.
2. You'll see an option labeled Skin Smoothing with a slider next to - adjust this to change the smoothing effect. Adjust the slider to 100%.

You've now finished an effect with retouching and face distortion.