unity mesh基础

画线

/// <summary>
    /// 创建线Mesh
    /// </summary>
    /// <param name="start">线起点</param>
    /// <param name="end">线终点</param>
    /// <returns>Mesh对象</returns>
    private Mesh CreateLineMesh(Vector3 start, Vector3 end)
    {
        var vertices = new List<Vector3> { start, end };
        var indices = new List<int> { 0, 1 };

        //Mesh mesh = new Mesh();
        mesh.SetVertices(vertices);
        mesh.SetIndices(indices.ToArray(), MeshTopology.Lines, 0);

        return mesh;
    }