public List<Vector3[]> ListPoints = new List<Vector3[]>();

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  Hi,

  would you mind showing the Vector3 class? How its made?

  ---

  Mitja
  

  Sunday, August 7, 2011 5:40 AM
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  // Very Simple Class
  
  
  Vector3[] listPointVectors = new Vector3[20]; // This is a sub holder in my class and is never initialized in the class.  
  
  
  public List<Vector3[]> ListPoints = new List<Vector3[]>();// There is a different way of constructing this list and the same results occurred...
  
  public void AddPoints()
  
  {
  
  ListPoints.Add[listPointVectors]; // Add the Vector3 Array to the list
  
  }
  
  // End Class
  
  
  // VerySimpleProgram
  
  // Standard constructor..
  
  VerySimpleClass verySimpleClass;
  
  public VerySimpleProgram()
  
  {
  
  verySimpleClass= new VerySimpleClass();
  
  }
  
  Load()
  
  {
  
  // I search through an array of list points and not just one....
  
  verySimpleClass.AddPoints();
  
  verySimpleClass.AddPoints();
  
  verySimpleClass.AddPoints();
  
  }
  
  
  Update()
  
  {
  
  
  // This should work or throw an error but does neither
  
  ListPoints[2].SetValue(new Vector3(200,400,200), 4) 
  
  // This should also work or throw an error but does neither
  
  ListPoints[5][6] = new Vector3(100,100,200) 
  
  // The problem will be seen easilly in this setup because everything should be zero except for (2,4), (5,6)... That is not what happens!!!
  
  
  
  // Bogus Array but at least it works after wasting a few hours 
  
  Vector3[] bogusArray= new Vector3[20];
  
  bogusArray = verySimpleClass.ListPoints[index].ToArray();
  
  bogusArray[subIndex] = new Vector3(23,54,65);
  
   verySimpleClass.ListPoints[index] = bogusArray; // I figured this out because I tried to use bogusArray.ToList() from here and an error code finally helped...
  
  
  
  }
  
  
  

  
  

  Sunday, August 7, 2011 7:01 AM
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  ...

   and Vector3? This isnt a class?

  ---

  Mitja

  Sunday, August 7, 2011 7:10 AM
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  ...

   and Vector3? This isnt a class?

  ---

  Mitja

  
  Right Mitja, its a struct. Comes from directX and can be found for instance in XNA-framework:

  http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.vector3.aspx

  Regards,

    Thorsten

  Monday, August 8, 2011 7:35 AM
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  ...

   and Vector3? This isnt a class?

  ---

  Mitja

  
  Right Mitja, its a struct. Comes from directX and can be found for instance in XNA-framework:

  http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.vector3.aspx

  Regards,

    Thorsten

  
  If the Vector3 were like Thorsten said, I sueest you to post it to the following catrgory for better support.

  http://forums.create.msdn.com/forums/default.aspx?GroupID=6

  Thanks for your understanding and support.

  ---

  Best Regards,
  Rocky Yue[MSFT]
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  Please remember to mark the replies as answers if they help and unmark them if they provide no help.
  
  

  Tuesday, August 9, 2011 5:52 AM
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  You're adding to the list a reference to the same array several times, not adding a copy of it. ListPoints[0] and ListPoints[1] reference the same array. When you change the referenced array, you can see that change from any of its references.

  Change your AddPoints method to this and see the difference:

  public void AddPoints()
  {
      ListPoints.Add(new Vector3[20]); // Adds a new Vector3 Array to the list
  }
  

  
  The important keyword here is 'new'. You have 1 new object for each time the 'new' keyword is executed.

  • Marked as answer by Lie You Friday, August 12, 2011 2:08 AM
  • Unmarked as answer by Lie You Friday, August 12, 2011 2:08 AM

  Tuesday, August 9, 2011 4:53 PM