HueSlider.cs

Go to the documentation of this file.

using System;
using Empyrean.Utils;
using UnityEngine;
using UnityEngine.UI;
 
namespace Empyrean.ColorPicker;
 
public class HueSlider : MonoBehaviour
{
    [SerializeField]
    public EventAwareSlider slider;
 
    [SerializeField]
    private RawImage hueSliderBackground;
 
    public float value
    {
        get
        {
            return slider.value;
        }
        set
        {
            slider.SetValue(value, sendEvent: false);
        }
    }
 
    public event Action<float> HueValueChanged = delegate
    {
    };
 
    public void Init()
    {
        slider.onValueChanged.AddListener(OnValueChanged);
        GenerateSliderTexture();
    }
 
    public void OnValueChanged(float value)
    {
        this.HueValueChanged(value);
    }
 
    private void GenerateSliderTexture()
    {
        Color[] array = GenerateHsvSpectrum();
        Texture2D texture2D = new Texture2D(1, array.Length);
        for (int i = 0; i < texture2D.height; i++)
        {
            texture2D.SetPixel(1, i, array[i]);
        }
        texture2D.Apply();
        hueSliderBackground.texture = texture2D;
    }
 
    public static Color[] GenerateHsvSpectrum()
    {
        Color[] array = new Color[360];
        for (int i = 0; i < 360; i++)
        {
            array[i] = Colorist.HSVtoRGB(i, 1f, 1f);
        }
        return array;
    }
 
    public void SetSliderValueAndSendEvent(float value)
    {
        slider.SetValue(value, sendEvent: true);
    }
}