UnityEditor.ColorPicker.HSVToRGBArray C# (CSharp) Method

        private static void HSVToRGBArray(Color[] colors, float scale)
        {
            int length = colors.Length;
            for (int i = 0; i < length; i++)
            {
                Color color = colors[i];
                Color color2 = EditorGUIUtility.HSVToRGB(color.r, color.g, color.b).RGBMultiplied(scale);
                color2.a = color.a;
                colors[i] = color2;
            }
        }

        private static Texture2D Update1DSlider(Texture2D tex, int xSize, float const1, float const2, ref float oldConst1, ref float oldConst2, int idx, bool hsvSpace)
        {
            if (!tex || const1 != oldConst1 || const2 != oldConst2)
            {
                if (!tex)
                {
                    tex = ColorPicker.MakeTexture(xSize, 2);
                }
                Color[] array  = new Color[xSize * 2];
                Color   black  = Color.black;
                Color   black2 = Color.black;
                switch (idx)
                {
                case 0:
                    black  = new Color(0f, const1, const2, 1f);
                    black2 = new Color(1f, 0f, 0f, 0f);
                    break;

                case 1:
                    black  = new Color(const1, 0f, const2, 1f);
                    black2 = new Color(0f, 1f, 0f, 0f);
                    break;

                case 2:
                    black  = new Color(const1, const2, 0f, 1f);
                    black2 = new Color(0f, 0f, 1f, 0f);
                    break;

                case 3:
                    black  = new Color(0f, 0f, 0f, 1f);
                    black2 = new Color(1f, 1f, 1f, 0f);
                    break;
                }
                ColorPicker.FillArea(xSize, 2, array, black, black2, new Color(0f, 0f, 0f, 0f));
                if (hsvSpace)
                {
                    ColorPicker.HSVToRGBArray(array);
                }
                oldConst1 = const1;
                oldConst2 = const2;
                tex.SetPixels(array);
                tex.Apply();
            }
            return(tex);
        }