MeshCreator

Stores the vertex/triangle data of a mesh in easily modifiable form - which can then be used to actually create or update a mesh.

Example

{C#}
[RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))]
public class MeshCreatorExample : MonoBehaviour
{
    MeshCreator meshCreator;
    MeshFilter meshFilter;

    void Awake()
    {
        // We will create a cube, so we set 12 triangles (6 sides á 2 triangles) and 8 vertices.
        // To do a cube with proper shading, we should actually create 4 vertices per side and have
        // normals pointing outwards, but for this example let's keep it simple.
        meshCreator = new MeshCreator(12, 8);

        // Create the vertices
        var behindUpperLeft = new MeshVertex(new Vector3(-1, 1, 1), Vector3.zero, Color.white);
        var behindUpperRight = new MeshVertex(new Vector3(1, 1, 1), Vector3.zero, Color.white);
        var behindLowerLeft = new MeshVertex(new Vector3(-1, -1, 1), Vector3.zero, Color.white);
        var behindLowerRight = new MeshVertex(new Vector3(1, -1, 1), Vector3.zero, Color.white);
        var frontUpperLeft = new MeshVertex(new Vector3(-1, 1, -1), Vector3.zero, Color.white);
        var frontUpperRight = new MeshVertex(new Vector3(1, 1, -1), Vector3.zero, Color.white);
        var frontLowerLeft = new MeshVertex(new Vector3(-1, -1, -1), Vector3.zero, Color.white);
        var frontLowerRight = new MeshVertex(new Vector3(1, -1, -1), Vector3.zero, Color.white);

        // Create the quads
        meshCreator.AddQuad(frontUpperLeft, frontUpperRight, frontLowerRight, frontLowerLeft);
        meshCreator.AddQuad(behindUpperRight, behindUpperLeft, behindLowerLeft, behindLowerRight);
        meshCreator.AddQuad(frontUpperRight, behindUpperRight, behindLowerRight, frontLowerRight);
        meshCreator.AddQuad(frontUpperLeft, frontLowerLeft, behindLowerLeft, behindUpperLeft);
        meshCreator.AddQuad(frontUpperLeft, behindUpperLeft, behindUpperRight, frontUpperRight);
        meshCreator.AddQuad(frontLowerLeft, frontLowerRight, behindLowerRight, behindLowerLeft);

        // Create a new mesh and set it in the mesh filter
        meshFilter = GetComponent<MeshFilter>();
        meshFilter.sharedMesh = meshCreator.CreateMesh();
        meshFilter.sharedMesh.RecalculateNormals();
    }

    void Update()
    {
        // Make the vertices wobble independently
        for (int i = 0; i < meshCreator.MeshVerticesCount; i++)
        {
            MeshVertex meshVertex = meshCreator.MeshVertices[i];
            float scale = Mathf.Lerp(2f, 4f, Mathf.Abs(Mathf.Cos(Time.time + i / 4f)));
            meshVertex.Position = meshVertex.Position.normalized * scale;
        }

        // Update the mesh
        meshCreator.UpdateMesh(meshFilter.sharedMesh);
    }
}

Dependencies

None.