UnityEngine.UI.VertexHelper.AddUIVertexTriangleStream C# (CSharp) Method

        public void AddUIVertexTriangleStream(List<UIVertex> verts)
        {
            if (verts != null)
            {
                CanvasRenderer.SplitUIVertexStreams(verts, this.m_Positions, this.m_Colors, this.m_Uv0S, this.m_Uv1S, this.m_Normals, this.m_Tangents, this.m_Indices);
            }
        }

    public override void ModifyMesh(VertexHelper vh)
    {
        if (!IsActive())
        {
            return;
        }

        List<UIVertex> verts = new List<UIVertex>();
        vh.GetUIVertexStream(verts);

        if (verts == null || verts.Count == 0)
        {
            return;
        }

        int start;
        int end = 0;

        for (float i = 0; i <= Mathf.PI * 2; i += Mathf.PI / (float)mDivideAmoumt)
        {
            start = end;
            end = verts.Count;
            ApplyShadow(verts, effectColor, start, end, effectDistance.x * Mathf.Cos(i), effectDistance.y * Mathf.Sin(i));
        }

        vh.Clear();
        vh.AddUIVertexTriangleStream(verts);
    }