Setting up the scene

To begin our exploration of input mechanisms, let's set up our scene. The plan is to let players create balloons. Everyone loves balloons!

For this scene, you could start with a new scene (File | New Scene) and then add the MyMyselfEye prefab we built in the previous chapter. Instead, I've decided to start with the Diorama scene created in the previous chapter, and remove all but the GroundPlane and PhotoPlane, as follows:

1. Open the Diorama scene
2. Remove all the objects, except for MyMyselfEye, Directional Light, GroundPlane and PhotoPlane
3. Position the MeMyselfEye at the scene origin, Position (0, 0, 0)
4. Select File | Save Scene As and give it a name, such as "Balloons"

Creating a balloon

For the balloon, you can simply use a standard Unity sphere 3D primitive if you choose. Or you can find an object in the Unity Asset Store or elsewhere. We are using a low poly balloon object that we found on Google Poly (https://poly.google.com/view/a01Rp51l-L3) and which is provided with the...