• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by dkfister · Jan 15, 2014 at 03:19 AM · c#meshvector3arraystriangles

Failed setting triangles in my mesh

So, I'm trying to create an automated "Face Creator" for my Mesh, so I can just call a function, to create a face in a specific position, and height/width.

But I'm getting the error: Failed setting triangles. The number of supplied triangle indices must be a multiple of 3.

Which is weird, because I am actually using 6 ints, for the 2 triangles that a face have.

This is my code;

 using UnityEngine;
 using System.Collections;
 
 public class RoomCreator : MonoBehaviour {

 private Vector3[] Mesh_Vertices;
 private Vector2[] Mesh_Uvs;
 private int[] Mesh_Triangles;

 private MeshFilter meshFilter;

 void Start() {
     firstFace = true;

     Mesh_Vertices = new Vector3[100];
     Mesh_Uvs = new Vector2[100];
     Mesh_Triangles = new int[100];

     meshFilter = GetComponent<MeshFilter>();

     CreateRoom();
 }

 private void CreateRoom() {
     meshFilter.mesh = CreateMesh();
 }

 private Mesh CreateMesh() {
     Mesh m = new Mesh();
     m.name = gameObject.name + "_Mesh";

     CreateFace(new Vector3(0,0,0), 1,1);

     m.vertices = Mesh_Vertices;
     m.triangles = Mesh_Triangles;
     m.uv = Mesh_Uvs;
     m.RecalculateNormals();

     return m;
 }

 private void CreateFace(Vector3 position,int width, int height) {
     Mesh_Vertices[0] = new Vector3(position.x, position.y, 0);
     Mesh_Vertices[1] = new Vector3(position.x + width, position.y, 0);
     Mesh_Vertices[2] = new Vector3(position.x + width, position.y + height, 0);
     Mesh_Vertices[3] = new Vector3(position.x, position.y + height, 0);

     Mesh_Triangles[0] = 0;
     Mesh_Triangles[1] = 1;
     Mesh_Triangles[2] = 2;

     Mesh_Triangles[3] = 0;
     Mesh_Triangles[4] = 2;
     Mesh_Triangles[5] = 3;

     Mesh_Uvs[0] = new Vector2(0,0);
     Mesh_Uvs[1] = new Vector2(0,1);
     Mesh_Uvs[2] = new Vector2(1,1);
     Mesh_Uvs[3] = new Vector2(1,0);
 }

}

Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

1 Reply

· Add your reply
  • Sort: 
avatar image
0
Best Answer

Answer by Eric5h5 · Jan 15, 2014 at 03:21 AM

You have Mesh_Triangles = new int[100];. 100 is not a multiple of 3. If you're using 6 triangle indices then the triangles array should be of size 6.

Comment
Add comment · Show 5 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image dkfister · Jan 15, 2014 at 03:24 AM 0
Share

I should really have realized that. I don't know why I didn't. Either way, it fixed it! $$anonymous$$uch appreciated mate.

avatar image dkfister · Jan 15, 2014 at 03:30 AM 0
Share

Don't know if you are still there, but the problem resumes, now the Array index is out of range.

avatar image dkfister · Jan 15, 2014 at 03:31 AM 0
Share

IndexOutOfRangeException: Array index is out of range. RoomCreator.CreateFace (Vector3 position, Int32 width, Int32 height) (at Assets/Scripts/BuildingToolsDeveloper/RoomCreator.cs:42) RoomCreator.Create$$anonymous$$esh () (at Assets/Scripts/BuildingToolsDeveloper/RoomCreator.cs:30) RoomCreator.CreateRoom () (at Assets/Scripts/BuildingToolsDeveloper/RoomCreator.cs:23) RoomCreator.Start () (at Assets/Scripts/BuildingToolsDeveloper/RoomCreator.cs:19)

avatar image Eric5h5 · Jan 15, 2014 at 03:47 AM 0
Share

You're referring to an element in an array, where the array isn't big enough. The code you have here is presumably not the code you're using now, since the line numbers don't match up, so I can't say anything more.

avatar image dkfister · Jan 15, 2014 at 03:51 AM 0
Share

Created a new question, that have this in account.

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

If you’re new to Unity Answers, please check our User Guide to help you navigate through our website and refer to our FAQ for more information.

Before posting, make sure to check out our Knowledge Base for commonly asked Unity questions.

Check our Moderator Guidelines if you’re a new moderator and want to work together in an effort to improve Unity Answers and support our users.

Follow this Question

Answers Answers and Comments

19 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Array index is out of range 2 Answers

2D Vectors along 3D Triangle 0 Answers

How to generate a subdivided plane mesh 1 Answer

Distribute terrain in zones 3 Answers

How do i create a Mesh in the middle of a Catmull spline? 0 Answers


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges