Cad.Net-承压环、底环板均分函数/创建圆环均分及文字

        /// <summary>
        /// 承压环、底环板均分函数
        /// </summary>
        /// <param name="maxr">外圆半径</param>
        /// <param name="platewid">排版板宽</param>
        /// <param name="totalang">均分总角度</param>
        /// <param name="divnum">最优均分数量</param>
        /// <param name="divnum2">均分数量</param>
        private static void PlateDiv(double maxr, int platewid, double totalang, out int divnum, out int divnum2)
        {
            double widang = 2 * Math.Atan2(platewid / 2.0, Math.Sqrt(Math.Pow(maxr, 2) - Math.Pow(platewid / 2.0, 2)));
            divnum = (int)(totalang / widang);
            int divnum1 = divnum;
            double divang = totalang / divnum1;
            //计算拼接数量
            while (maxr * Math.Sin(divang / 2.0) > (platewid / 2.0))
            {
                divnum1++;
                divang = totalang / divnum1;
            }
            divnum2 = divnum1;
            divang = totalang / divnum2;
            while (maxr * Math.Sin(divang / 2.0) < (platewid / 2.0))
            {
                divnum2--;
                divang = totalang / divnum2;
            }
            //确定拼接数量
            divnum = divnum1 > divnum ? divnum1 : divnum2;
        }
        /// <summary>
        /// 创建圆环均分及文字
        /// </summary>
        /// <param name="maxr">圆环最大直径</param>
        /// <param name="minr">圆环最小直径</param>
        /// <param name="cen">圆环圆心点</param>
        /// <param name="divnum">圆环等分数量</param>
        /// <param name="divang">圆环等分后，每分角度(弧度)</param>
        /// <param name="atpy">焊缝编号，A10X,B20X</param>
        private static void MakeRingDivWeldText(double maxr, double minr, Point3d cen, int divnum, double divang, string atpy)
        {
            for (int i = 0; i < divnum; i++)
            {
                double lang = (divang / 2.0) + (i * divang);
                db.AddLineToModelSpace(cen.PolarPtOfDegree(lang, minr), cen.PolarPtOfDegree(lang, maxr));
                string str = $"{atpy}-{i + 1}";
                TextHorizontalMode thm;
                if (Math.Abs(lang - (Math.PI * 0.5)) < (0.5 * divang) || Math.Abs(lang - (Math.PI * 1.5)) < (0.5 * divang) || lang == Math.PI * 0.5 || lang == Math.PI * 1.5)
                    thm = TextHorizontalMode.TextCenter;
                else if (lang > (Math.PI * 0.5) && lang < (Math.PI * 1.5)) thm = TextHorizontalMode.TextRight;
                else thm = TextHorizontalMode.TextLeft;
                Point3d tpt = cen.PolarPtOfDegree(lang, maxr + fonthig);
                bool angpart = (lang > 0 && lang <= (Math.PI * 0.5)) || (lang > Math.PI && lang <= (Math.PI * 1.5));
                double tang = (divang / 2.0) + (i * divang), bigang, smlang;
                if (lang <= Math.PI * 0.5)
                {
                    smlang = 0;
                    bigang = Math.PI * 0.5;
                }
                else if (lang <= Math.PI)
                {
                    smlang = Math.PI * 0.5;
                    bigang = Math.PI;
                }
                else if (lang <= Math.PI * 1.5)
                {
                    smlang = Math.PI;
                    bigang = Math.PI * 1.5;
                }
                else
                {
                    smlang = Math.PI * 1.5;
                    bigang = Math.PI * 2;
                }
                Point3d prpt1 = tpt;
                int n = angpart ? -1 : 1;
                Point3d prpt2 = cen.PolarPtOfDegree((divang / 2.0) + ((i + n) * divang), maxr + fonthig);
                while (Math.Abs(prpt1.Y - prpt2.Y) <= (1.1 * fonthig) && ((divang / 2.0) + ((i + n) * divang)) > smlang && ((divang / 2.0) + ((i + n) * divang)) <= bigang)
                {
                    if (lang > 0 && lang < Math.PI)
                    {
                        tpt = tpt.PolarPtOfDegree(lang, Math.Abs((prpt2.Y + (1.1 * fonthig) - prpt1.Y) / Math.Sin(tang)));
                    }
                    else
                    {
                        tpt = tpt.PolarPtOfDegree(lang, Math.Abs((prpt2.Y - prpt1.Y - (1.1 * fonthig)) / Math.Sin(tang)));
                    }
                    prpt1 = prpt2;
                    if (angpart) n--;
                    else n++;
                    prpt2 = cen.PolarPtOfDegree((divang / 2.0) + ((i + n) * divang), maxr + fonthig);
                }
                if (pted2.Y > tpt.Y) pte0 = pted2 = new Point3d(pted2.X, tpt.Y - (0.5 * fonthig), 0);
                db.AddTextToModelSpace(tpt, str, fonthig, thm, TextVerticalMode.TextVerticalMid);
            }
        }