0
\$\begingroup\$

I'm creating many GameObjects and each one has a single mesh, created in a script. The problem is that I would like to draw them so that they behave like a single mesh. Is it possible? Or I must combine all the meshes togheter?

enter image description here

Thanks for your help!

Edit: Added the code where I create the mesh and an image to clarify what I did enter image description here

public void createMesh() {
        List<Vector3> vertices = new List<Vector3>();
        List<int> triangles = new List<int>();

        Vector3 _right = rightBase * radiusBase;

        //BASE
        //POC = Point on circumference
        Vector3 axis = Vector3.Cross(_right, fwdBase); //Axis of rotation of the vector _right for the base
        for(int POC = 0; POC < numberOfSections; POC++) {
            vertices.Add(_right);

            _right = Quaternion.AngleAxis(360 / numberOfSections, axis) * _right;
        }

        //TOP
        _right = rightTop * radiusTop;

        axis = Vector3.Cross(_right, fwdTop);
        for(int POC = 0; POC < numberOfSections; POC++) {
            vertices.Add(direction + _right);

            _right = Quaternion.AngleAxis(360 / numberOfSections, axis) * _right;
        }

        //The 2 points at the center of the base and the top
        vertices.Add(Vector3.zero);
        vertices.Add(direction);

        //Triangles
        for(int face = 0; face < numberOfSections - 1; face++) {
            triangles.Add(face);
            triangles.Add(face + numberOfSections);
            triangles.Add(face + 1);

            triangles.Add(face + 1);
            triangles.Add(face + numberOfSections);
            triangles.Add(face + numberOfSections + 1);
        }
        triangles.Add(numberOfSections - 1);
        triangles.Add(2 * numberOfSections - 1);
        triangles.Add(0);

        triangles.Add(0);
        triangles.Add(2 * numberOfSections - 1);
        triangles.Add(numberOfSections);

        //COVER BASE
        for(int POC = 0; POC < numberOfSections - 1; POC++) {
            triangles.Add(2 * numberOfSections);
            triangles.Add(POC);
            triangles.Add(POC + 1);
        }
        triangles.Add(2 * numberOfSections);
        triangles.Add(numberOfSections - 1);
        triangles.Add(0);


        //COVER TOP
        for(int POC = 0; POC < numberOfSections - 1; POC++) {
            triangles.Add(2 * numberOfSections + 1);
            triangles.Add(numberOfSections + POC + 1);
            triangles.Add(numberOfSections + POC);
        }
        triangles.Add(2 * numberOfSections + 1);
        triangles.Add(numberOfSections);
        triangles.Add(2 * numberOfSections - 1);


        getMesh().Clear();
        getMesh().vertices = vertices.ToArray();
        getMesh().triangles = triangles.ToArray();
        getMesh().RecalculateNormals();
        getMesh().RecalculateBounds();
        obj.GetComponent<MeshCollider>().sharedMesh = getMesh();
    }
\$\endgroup\$
2
  • \$\begingroup\$ Can you show us how you create your meshes? Also, have you considered creating them as a single mesh? This may be substantially more efficient, depending on what kinds of transformations they need to undergo. \$\endgroup\$ Commented May 28, 2019 at 22:38
  • \$\begingroup\$ @DMGregory added the code. They don't need to move, I did it with more objects simply because I could get the corresponding gameObject just by raycasting my mouse in world space. \$\endgroup\$ Commented May 29, 2019 at 6:32

0

Reset to default

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.