Create Vertices on gameObject

Unity Engine
1

I’ve created a plane in Blender with the exact dimensions I need and imported it to Unity.
Now, I need to, dynamically / programmatically, create new vertices on the gameobject. The number of vertices are dynamic, and are sent by another application, so I can’t create the gameobject with the exact number of vertices, from the beginning.
How can I create the vertices on a gameobject through scripting?

My thanks in advanced.

2

I think most of what you need is covered in the “mesh” script reference:

3

First of all, thank you for your reply, LeftyRighty

I’ve used the examples in the “mesh” script reference, and apparently I’m able to create the new vertices (because I did Unit tests and the vertices were added to the mesh), but visually nothing happens.

Mesh mesh = new Mesh();
mesh = mainObject.GetComponent().mesh;

int i;
int vertCount = mesh.vertexCount;
vertCount += 2;

Vector3 objectVertices ;
Vector3 newVertices=new Vector3[vertCount];
objectVertices = mesh.vertices;
for (i = 0; i < mesh.vertexCount; i++)
{
newVertices = objectVertices*;*
}

newVertices = new Vector3(-200, -200, -200);
i++;
newVertices = new Vector3(-220, -220, -220);

mesh.vertices = newVertices;
After the last line of code, shouldn’t I be doing some type of refresh to mainObject?
When I used
mesh = mainObject.GetComponent().mesh;
to get the object mesh, shouldn’t I be doing something to use this mesh with the object?
Or does it have to do with the vertices order to draw triangles,…?
[quote=“LeftyRighty, post:2, topic: 526585, username:LeftyRighty”]
I think most of what you need is covered in the “mesh” script reference:
*http://docs.unity3d.com/Documentation/ScriptReference/Mesh.html*_
*[/quote]
*_

4

After adding new vertex locations, you need to tell the mesh about any new triangles (and probably remove old triangles).
Keep reading the Mesh docs.

5

This is my personal favorite mesh tutorial:

Procedural Mesh