koobas.hobune.stream
Saving Certain Vector3's positions
I am working with editing meshes and I want to sort of stair step my edits. I want them to make very small changes and the vertices that are changed are saved in a new array that will then be changed again until the next step of editing array length is 0 and then it will stop. I have a script that edits but doesn't go past the very first step:
var firststep : Vector3[];
function Start() {
var mesh : Mesh = GetComponent(MeshFilter).mesh;
var vertices : Vector3[] = mesh.vertices;
var normals : Vector3[] = mesh.normals;
for (var i = 0; i < vertices.Length; i++)
{
number1 = Random.Range(0,1);
vertices[i] += normals[i] * number1;
if ( number1 > 0)
{
// here is where I want to add the changed vertices
firststep.Add(vertices[i]);
}
}
mesh.vertices = vertices;
print(firststep.Length);
}
so far though this always prints the firststep.Length as zero. It's not adding any of the changed vertices when I can clearly see them changing. Any ideas?
You can't add anything to fixed-size arrays like Vector3[]. Use List instead.
I tried array lists and ran into all sorts of trouble. how would I do that? I was using this http://answers.unity3d.com/questions/17033/how-do-you-use-removeat-or-add-with-an-array-of-ga.html but I don't know if I was just doing it wrong or what.
No, List, not array lists. http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx
so would it be public List firststep for my variable and then just firststep.Add(verticies[i]) ?
After playing with it I'm getting the error NullReferenceException: Object reference not set to an instance of an object $$anonymous$$eshEditing.Start () (at Assets/$$anonymous$$eshEditing.cs:25)
everytime number1 = 1. can I not just type firststep.Add(vertices[i])? I'm using IList by the way or is that not right?
There are two versions of Random.Range(x,y), one for integers, and one for floats. You are passing two integers, so it will return an integer between x and y-1, which in your case is always 0. Make sure you pass two float values to that function, in which case it will return a float value within that range.
I don't use UnityScript, so I'm not sure about the syntax, but it should be something like
number1 = Random.Range(0.0,1.0);
You are right I forgot the last number is y-1 haha but it still doesn't add the arrays like i need. Eric5h5 is on the right track I think.
