ReadJson.cs

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namespace  ParseData.ParsePDB
{
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.IO;

public class ReadJson 
{
    
    private List<List<Vector3>> m_fieldlines;
    
    public List<List<Vector3>> GetFieldLines()
    {
        return m_fieldlines;
    }
            
            
    public List<List<Vector3>> ReadFile(string fieldlines_file_content, Vector3 Offset) 
    {
        List<List<Vector3>> linelist=new List<List<Vector3>>();
        StringReader sr = new StringReader(fieldlines_file_content);
        string line = null;
        line = sr.ReadLine();
        string[] tok = line.Split(' ');

        if(tok[0] == "n")
        {
            // We have an .apf file (animated potential fieldlines)
            List<Vector3> particlelist = new List<Vector3>();
            while(line != null)
            {
                tok = line.Split(' ');
                if(tok[0] == "n" && particlelist.Count > 0)
                {
                    linelist.Add(particlelist);
                    particlelist = new List<Vector3>();
                }
                if(tok[0] == "v")
                {
                    //Unity has a left-handed coordinates system while PDBs are right-handed
                    //So we have to inverse the X coordinates
                    Vector3 values = new Vector3(-float.Parse(tok[1]) + Offset.x,
                                                  float.Parse(tok[2]) + Offset.y,
                                                  float.Parse(tok[3]) + Offset.z
                                                );
                    particlelist.Add(values);
                }
                line = sr.ReadLine();
            }
            if(particlelist.Count > 0)
                linelist.Add(particlelist);
            else
                Debug.Log("Reading Fieldlines apf ERROR");
        }
        else
        {
            // We have a JSON file
            object value=(object)MiniJSON.JsonDecode(fieldlines_file_content);
            
            Debug.Log(((Hashtable)value)["lines"]);
            ArrayList FieldLinesarray=(ArrayList)(((Hashtable)value)["lines"]);
            
    //      Hashtable FieldLines = (Hashtable)value;
            
            Debug.Log(FieldLinesarray.Count);

            for (int i=0; i<FieldLinesarray.Count; i++) 
            {
                List<Vector3> particlelist=new List<Vector3>();
                for(int j=0;j<((ArrayList)FieldLinesarray[i]).Count;j+=3)
                {
    //              Debug.Log("FieldLine: " +((ArrayList)FieldLinesarray[i])[j]+", "+((ArrayList)FieldLinesarray[i])[j+1]+", "+((ArrayList)FieldLinesarray[i])[j+2]);

                    //Unity has a left-handed coordinates system while PDBs are right-handed
                    //So we have to inverse the X coordinates
                    double x=-(double)(((ArrayList)FieldLinesarray[i])[j]);
                    double y=(double)(((ArrayList)FieldLinesarray[i])[j+1]);
                    double z=(double)(((ArrayList)FieldLinesarray[i])[j+2]);
                    particlelist.Add(new Vector3(float.Parse(System.Convert.ToString(x))+Offset.x,float.Parse(System.Convert.ToString(y))+Offset.y,float.Parse(System.Convert.ToString(z))+Offset.z));

    //              Debug.Log("FieldLine: " +((Vector3)particlelist[particlelist.Count-1]).z);

    //              Debug.Log("FieldLine: " +((ArrayList)FieldLinesarray[i])[j]);
                }
                linelist.Add(particlelist);
            }
        }

        m_fieldlines = linelist;
        return GetFieldLines();
        
    }
}
}