SuperMap.Web.Mapping.DynamicRESTLayer.GetImageUrl C# (CSharp) Method

        protected override string GetImageUrl()
        {
            Rectangle2D bounds = ViewBounds;
            int width = (int)Math.Round(ViewSize.Width);
            int height = (int)Math.Round(ViewSize.Height);

            StringBuilder imgUrl = new StringBuilder();
            imgUrl.Append(Url);
            if (!Url.EndsWith("/"))
            {
                imgUrl.Append("/");
            }

            imgUrl.AppendFormat("image.{0}?", ImageFormat);
            imgUrl.AppendFormat("viewBounds={0}", JsonHelper.FromRectangle2D(bounds));
            imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&height={0}", height);
            imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&width={0}", width);

            if (!string.IsNullOrEmpty(LayersID))
            {
                imgUrl.AppendFormat("&layersID={0}", LayersID);
            }
            imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&transparent={0}", Transparent);

            if (ClipRegion != null)
            {
                imgUrl.Append("&clipRegionEnabled=True&");
                imgUrl.AppendFormat("clipRegion={0}", ServerGeometry.ToJson(ClipRegion.ToServerGeometry()));
            }
            if (MaxVisibleVertex != int.MaxValue && MaxVisibleVertex >= 0)
            {
                imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&maxVisibleVertex={0}", MaxVisibleVertex);
            }

            if (!EnableServerCaching)
            {
                imgUrl.AppendFormat(System.Globalization.CultureInfo.InvariantCulture, "&cacheEnabled={0}", EnableServerCaching);
                imgUrl.AppendFormat("&t={0}", DateTime.Now.Ticks.ToString(System.Globalization.CultureInfo.InvariantCulture));
            }
            if (this.CRS != null && this.CRS.WKID > 0)
            {
                imgUrl.Append("&prjCoordSys={\"epsgCode\":" + this.CRS.WKID + "}");
            }
            imgUrl.AppendFormat("&customParams={0}", CustomParams);
            return imgUrl.ToString();
        }