PillarShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class PillarShader : ChromaShader
{
    private readonly Vector4 _primaryColor;
 
    private readonly Vector4 _secondaryColor;
 
    public PillarShader(Color primaryColor, Color secondaryColor)
    {
        _primaryColor = primaryColor.ToVector4();
        _secondaryColor = secondaryColor.ToVector4();
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessLowDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        for (int i = 0; i < fragment.Count; i++)
        {
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            Vector4 vector = Vector4.Lerp(_primaryColor, _secondaryColor, (float)Math.Sin(time * 2.5f + canvasPositionOfIndex.X) * 0.5f + 0.5f);
            fragment.SetColor(i, vector);
        }
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessHighDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        Vector2 vector = new Vector2(1.5f, 0.5f);
        time *= 4f;
        for (int i = 0; i < fragment.Count; i++)
        {
            Vector2 vector2 = fragment.GetCanvasPositionOfIndex(i) - vector;
            float num = vector2.Length() * 2f;
            float num2 = (float)Math.Atan2(vector2.Y, vector2.X);
            float amount = (float)Math.Sin(num * 4f - time - num2) * 0.5f + 0.5f;
            Vector4 vector3 = Vector4.Lerp(_primaryColor, _secondaryColor, amount);
            if (num < 1f)
            {
                float num3 = num / 1f;
                num3 *= num3 * num3;
                float amount2 = (float)Math.Sin(4f - time - num2) * 0.5f + 0.5f;
                vector3 = Vector4.Lerp(_primaryColor, _secondaryColor, amount2) * num3;
            }
            vector3.W = 1f;
            fragment.SetColor(i, vector3);
        }
    }
}