Create simple mes plane from script?

[IsGreen]

I am trying to create a simple configurable mesh plane, to understand how normals works in Unity mesh.

The image show array of vertices(left) and the array of triangles (right).
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I tried 1000 ways, but no way.
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Goes the bullshit that image showing.
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Apparently, it’s all good: the position of the vertices, triangles, but does not draw or triangles or regular correctly.
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What I have been found, is that if the triangles direction is changed (meaning clockwise or counterclockwise), or is changed by the vertices (the hypotenuse vertices to the beginning, end or middle) changes form but still not correctly render the mesh.

using UnityEngine;
using System.Collections;

public class csGrupoVertices : MonoBehaviour {
	
	public float Width = 100f;
	public float Height = 100f;
	public int divisionX = 2;
	public int divisionY = 2;

	// Use this for initialization
	void Start () {

		divisionX = Mathf.Max(divisionX,1);
		divisionY = Mathf.Max(divisionY,1);

		float width = Width / divisionX;
		float height = Height / divisionY;
		
		int i,w,q;
		
		Vector3[] vertices = new Vector3[(divisionX+1)*(divisionY+1)];
		Vector3[] normals = new Vector3[(divisionX+1)*(divisionY+1)];
		Vector2[] uv = new Vector2[(divisionX+1)*(divisionY+1)];
		
		for(i=0;i<divisionY+1;i++){
			
			for(w=0;w<divisionX+1;w++){
				
				// CODE ERROR
				// vertices[i*divisionX+w] = new Vector3(w*width,i*height,0f);
				vertices[i*(divisionX+1)+w] = new Vector3(w*width,i*height,0f);

				normals[i*divisionX+w] = Vector3.forward;
				uv[i*divisionX+w] = new Vector2(vertices[i*divisionX+w].x/Width,vertices[i*divisionX+w].y/Height);
				Debug.Log((i*(divisionX+1)+w).ToString()+" : "+vertices[i*divisionX+w].ToString()+"   uv: "+uv[i*divisionX+w].ToString());
				
			}
			
		}
		
		Debug.Log("-----------------------------------------------------");
		
		int[] triangles = new int[divisionX*divisionY*6];
		
		for(i=0;i<divisionY;i++){
			
			for(w=0;w<divisionX;w++){
				
				q=(w+i*divisionX)*6;
				triangles[q+1] = (i+1)*(divisionX+1)+w;
				triangles[q] = i*(divisionX+1)+w;
				triangles[q+2] = triangles[q]+1;
				Debug.Log((i*(divisionX)*2+w*2).ToString()+" : "+triangles[q].ToString()+triangles[q+1].ToString()+triangles[q+2].ToString());
				triangles[q+3] = triangles[q+1];
				triangles[q+4] = triangles[q+3]+1;
				triangles[q+5] = triangles[q+2];
				Debug.Log((i*(divisionX)*2+w*2+1).ToString()+" : "+triangles[q+3].ToString()+triangles[q+4].ToString()+triangles[q+5].ToString());
				
			}
			
		}

		Mesh mesh = new Mesh();
		
		mesh.vertices = vertices;
		mesh.normals = normals;
		mesh.uv = uv;
		mesh.triangles = triangles;
		
		//mesh.RecalculateNormals();
		
		MeshFilter meshFilter = this.gameObject.GetComponent<MeshFilter>();
		meshFilter.mesh = mesh;
		
	}

}

[SOLVED]

Code Error in vertices index. Some vertices equal to zero.

[mgear]

Maybe can get some ideas from these,
http://wiki.unity3d.com/index.php/CreatePlane
Three.js PlaneGeometry.js to Unity C# « Unity Coding – Unity3D (see the comments section for working example)

[IsGreen]

@mgear

Maybe can get some ideas from these,
http://wiki.unity3d.com/index.php/CreatePlane
http://unitycoder.com/blog/2013/03/13/three-js-planegeometry-js-to-unity-c/ (see the comments section for working example)

Ok, thanks, I’ll look, and comment that this has gone.

[IsGreen]

Second test:

In the script http://wiki.unity3d.com/index.php/CreatePlane, I dont’t see differences between:

            index = 0;
            for (int y = 0; y < lengthSegments; y++)
            {
                for (int x = 0; x < widthSegments; x++)
                {
                    triangles[index]   = (y     * hCount2) + x;
                    triangles[index+1] = ((y+1) * hCount2) + x;
                    triangles[index+2] = (y     * hCount2) + x + 1;
 
                    triangles[index+3] = ((y+1) * hCount2) + x;
                    triangles[index+4] = ((y+1) * hCount2) + x + 1;
                    triangles[index+5] = (y     * hCount2) + x + 1;
                    index += 6;
                }
            }

And,

      for(i=0;i<divisionY;i++){            

            for(w=0;w<divisionX;w++){                

                q=(w+i*divisionX)*6;
                triangles[q+1] = (i+1)*(divisionX+1)+w;
                triangles[q] = i*(divisionX+1)+w;
                triangles[q+2] = triangles[q]+1;
                Debug.Log((i*(divisionX)*2+w*2).ToString()+" : "+triangles[q].ToString()+triangles[q+1].ToString()+triangles[q+2].ToString());
                triangles[q+3] = triangles[q+1];
                triangles[q+4] = triangles[q+3]+1;
                triangles[q+5] = triangles[q+2];
                Debug.Log((i*(divisionX)*2+w*2+1).ToString()+" : "+triangles[q+3].ToString()+triangles[q+4].ToString()+triangles[q+5].ToString());  

            }            

        }

Two codes use same vertice order in triangle.

In the second script, http://unitycoder.com/blog/2013/03/13/three-js-planegeometry-js-to-unity-c/, use Mesh.SetIndice to create triangles array.

I have used Mesh.SetIndice and Mesh.SetTriangle to create triangle array, but still not working.

Image Screen:

I don’t know, why not render vertices 5 and 2.

[IsGreen]

Finally, the bug was in vertice index, where some vertices were equals to zero.

           // CODE ERROR
                // vertices[i*divisionX+w] = new Vector3(w*width,i*height,0f);

                vertices[i*(divisionX+1)+w] = new Vector3(w*width,i*height,0f);