Gradient

class in UnityEngine

描述

渐变，用于动画化颜色。

using UnityEngine;

public class ExampleScript : MonoBehaviour
{
    Gradient gradient;
    GradientColorKey[] colorKey;
    GradientAlphaKey[] alphaKey;

    void Start()
    {
        gradient = new Gradient();

        // Populate the color keys at the relative time 0 and 1 (0 and 100%)
        colorKey = new GradientColorKey[2];
        colorKey[0].color = Color.red;
        colorKey[0].time = 0.0f;
        colorKey[1].color = Color.blue;
        colorKey[1].time = 1.0f;

        // Populate the alpha  keys at relative time 0 and 1  (0 and 100%)
        alphaKey = new GradientAlphaKey[2];
        alphaKey[0].alpha = 1.0f;
        alphaKey[0].time = 0.0f;
        alphaKey[1].alpha = 0.0f;
        alphaKey[1].time = 1.0f;

        gradient.SetKeys(colorKey, alphaKey);

        // What's the color at the relative time 0.25 (25 %) ?
        Debug.Log(gradient.Evaluate(0.25f));
    }
}