Volumetric.cs

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using UnityEngine;
using System.Collections.Generic;
using Molecule.Model;

public abstract class Volumetric : MonoBehaviour {
    public static float particleScale = 2.5f;
    protected float ALPHA_THRESHOLD = 0.05f;
    
    protected bool raise = false;
    protected float ALPHA_FACTOR = 7f;
    
    protected float[,,] density;
    
    protected ParticleSystem.Particle[] points;
    protected List<ParticleSystem.Particle> dynPoints = new List<ParticleSystem.Particle>();
    public int pNumber;
    protected static Vector3 delta;
    protected static Vector3 origin = MoleculeModel.MinValue;
    
    public abstract void Init();
    
    public abstract void CreatePoints();

    public void ShowHide(){
        bool show = ElectrostaticManager.particleSystem.GetComponent<Renderer>().enabled;
        ElectrostaticManager.particleSystem.GetComponent<Renderer>().enabled = !show;
    }
    public void Clear()
    {
        points = null;
        pNumber = 0;
        ElectrostaticManager.particleSystem.GetComponent<Renderer>().enabled = false;
        dynPoints.Clear();
        Destroy(this);
    }
    
    protected void AlphaCulling(float cull) {
        //dynPoints.RemoveAll(item => item.color.a < cull);
        dynPoints.RemoveAll(item => item.startColor == Color.blue);
    }
    
    protected void BuildParticleArray()
    {
        pNumber = dynPoints.Count;
        points = new ParticleSystem.Particle[pNumber];
        for(int i=0; i<pNumber; i++)
            points[i] = dynPoints[i];
    }
    
    protected void SetParticleSystem()
    {

        CreatePoints();
        
        //AlphaCulling(0.10f); // you could further cull here.
        BuildParticleArray();

        ElectrostaticManager.particleSystem.SetParticles(points, pNumber);
        ElectrostaticManager.particleSystem.GetComponent<Renderer>().enabled = true;
    }
}