Describes the dimensions of the shape.
Used only for the primitive shapes: Sphere, Capsule, Box.
• Sphere: size.x is radius of the sphere.
• Box: size is dimensions of the box, the box extends from -size/2 to size/2.
• Capsule: size.x is radius of the capsule, size.y is the height of the capsule, the capsules tips extend from -size.y/2 to size.y/2.