Unity实现颜色渐变滑动条

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我是靠谱客的博主糊涂茉莉，这篇文章主要介绍Unity实现颜色渐变滑动条，现在分享给大家，希望可以做个参考。

本文实例为大家分享了Unity实现颜色渐变滑动条的具体代码，供大家参考，具体内容如下

效果展示

代码

直接挂在UGUI Slider上即可

复制代码

using UnityEngine;
using UnityEngine.UI;

public class ColorFade : MonoBehaviour
{
    Color[] colors = new Color[]{
      new Color(1, 0, 0),
      new Color(1, 1, 0),
      new Color(0, 1, 0),
      new Color(0, 1, 1),
      new Color(0, 0, 1),
      new Color(1, 0, 1),
      new Color(1, 0, 0)};

private Slider slider_color;
    private Image img_handle;

private void Awake()
    {
        slider_color = transform.GetComponent<Slider>();
        slider_color.onValueChanged.AddListener(OnColorSliderValueChanged);
        // handle
        img_handle = slider_color.handleRect.GetComponent<Image>();
        img_handle.color = Color.red;
        // bg
        var hueTex = new Texture2D(colors.Length, 1);
        hueTex.SetPixels(colors);
        hueTex.Apply();
        slider_color.transform.Find("Background").GetComponent<Image>().sprite = 
            Sprite.Create(hueTex, new Rect(Vector2.zero, new Vector2(colors.Length, 1)), Vector2.one * 0.5f);
        // fill
        slider_color.fillRect.GetComponent<Image>().enabled = false;
    }
    private void OnColorSliderValueChanged(float _value)
    {
        img_handle.color = Color.HSVToRGB(_value, 1, 1);
    }
}

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using UnityEngine;
using UnityEngine.UI;

public class ColorFade : MonoBehaviour
{
    Color[] colors = new Color[]{
      new Color(1, 0, 0),
      new Color(1, 1, 0),
      new Color(0, 1, 0),
      new Color(0, 1, 1),
      new Color(0, 0, 1),
      new Color(1, 0, 1),
      new Color(1, 0, 0)};

    private Slider slider_color;
    private Image img_handle;

    private void Awake()
    {
        slider_color = transform.GetComponent<Slider>();
        slider_color.onValueChanged.AddListener(OnColorSliderValueChanged);
        // handle
        img_handle = slider_color.handleRect.GetComponent<Image>();
        img_handle.color = Color.red;
        // bg
        var hueTex = new Texture2D(colors.Length, 1);
        hueTex.SetPixels(colors);
        hueTex.Apply();
        slider_color.transform.Find("Background").GetComponent<Image>().sprite = 
            Sprite.Create(hueTex, new Rect(Vector2.zero, new Vector2(colors.Length, 1)), Vector2.one * 0.5f);
        // fill
        slider_color.fillRect.GetComponent<Image>().enabled = false;
    }
    private void OnColorSliderValueChanged(float _value)
    {
        img_handle.color = Color.HSVToRGB(_value, 1, 1);
    }
}