Special lights
In this section on special lights, we'll discuss two additional lights provided by Three.js. First, we'll discuss THREE.HemisphereLight, which helps in creating more natural lighting for outdoor scenes, then we'll look at THREE.AreaLight, which emits lights from a large area instead of a single point, and finally, we'll show you how you can add a lens flare effect to your scene.
THREE.HemisphereLight
The first special light we're going to look at is THREE.HemisphereLight. With THREE.HemisphereLight, we can create more natural-looking outdoor lighting. Without this light, we could simulate the outdoors by creating THREE.DirectionalLight, which emulates the sun, and maybe add additional THREE.AmbientLight to provide some general color to the scene. This, however, won't look really natural. When you're outdoors, not all the light comes directly from above: much is diffused by the atmosphere and reflected by the ground and other objects. THREE...
