61 lines
1.5 KiB
C#
61 lines
1.5 KiB
C#
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using UnityEngine;
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using System.Collections;
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public class PolygonLightFlicker : MonoBehaviour
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{
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// Properties
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public string waveFunction = "sin"; // possible values: sin, tri(angle), sqr(square), saw(tooth), inv(verted sawtooth), noise (random)
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public float startValue = 0.0f; // start
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public float amplitude = 1.0f; // amplitude of the wave
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public float phase = 0.0f; // start point inside on wave cycle
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public float frequency = 0.5f; // cycle frequency per second
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// Keep a copy of the original color
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private Color originalColor;
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// Store the original color
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void Start (){
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originalColor = GetComponent<Light>().color;
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}
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void Update (){
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Light light = GetComponent<Light>();
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light.color = originalColor * (EvalWave());
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}
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float EvalWave (){
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float x = (Time.time + phase)*frequency;
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float y;
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x = x - Mathf.Floor(x); // normalized value (0..1)
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if (waveFunction=="sin") {
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y = Mathf.Sin(x*2*Mathf.PI);
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}
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else if (waveFunction=="tri") {
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if (x < 0.5f)
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y = 4.0f * x - 1.0f;
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else
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y = -4.0f * x + 3.0f;
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}
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else if (waveFunction=="sqr") {
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if (x < 0.5f)
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y = 1.0f;
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else
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y = -1.0f;
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}
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else if (waveFunction=="saw") {
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y = x;
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}
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else if (waveFunction=="inv") {
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y = 1.0f - x;
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}
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else if (waveFunction=="noise") {
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y = 1 - (Random.value*2);
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}
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else {
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y = 1.0f;
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}
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return (y*amplitude)+startValue;
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}
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}
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