Summary - Lighting

Reinforce lighting concepts with a summary task.

Lighting summary

Lighting starts with four light types: Directional, Point, Spot and Area. Shadows can be Hard or Soft; ambient light provides the indirect lighting of the scene. Objects that do not move are marked Static and their light is precomputed with Bake.

isik.type = LightType.Point;
isik.shadows = LightShadows.Soft;

Realtime light suits moving objects, baked light suits unchanging ones.

Exercise Lifecycle and light summary

In a class named IsikOzet, define a string tur field with the value "Directional" and an int sayac field. In the Awake method, set the tur value to "Point". In the Start method, print the text "Isik turu: " joined with tur using Debug.Log. In the Update method, increase the sayac variable by one every frame.

Show example solution

using UnityEngine;

public class IsikOzet : MonoBehaviour
{
    string tur = "Directional";
    int sayac;

    void Awake()
    {
        tur = "Point";
    }

    void Start()
    {
        Debug.Log("Isik turu: " + tur);
    }

    void Update()
    {
        sayac++;
    }
}

Test yourself

Which statement is true for baked light?
- It changes with the camera direction
- It is recomputed every frame
- It is computed before the game starts and written to the lightmap
- It only softens shadows
Show answer

It is computed before the game starts and written to the lightmap — Baked light is computed once before the game starts and its result is stored in the lightmap file.

The property that sets the light type

isik.____ = LightType.Point;

Show answer

isik.type = LightType.Point;

Code pieces and their meanings

LightType

The list of light types
LightShadows

The list of shadow types
RenderSettings.ambientLight

The color of the ambient light
gameObject.isStatic

Whether the object is static or not

Next lesson: What is a Material?

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