Exemple #1
0
        public void TestBltoxy()
        {
            {
                //Spheroid BJ = new Spheroid(6378245, 298.3);

                IProj proj = new GaussProj(Spheroid.CreateBeiJing1954());

                double B = SurMath.DMStoRAD(21.58470845);
                double l = SurMath.DMStoRAD(2.25314880);
                proj.Bltoxy(B, l, out double x, out double y, out _, out _);
                //B = 21 ◦ 58 ′ 47.0845 ′′ ,L = 113 ◦ 25 ′ 31.4880 ′′ ,
                //x = 2433586.692,y = 250547.403
                Assert.AreEqual(2433586.692, x, 1e-3);
                Assert.AreEqual(250547.403, y, 1e-3);
            }

            {
                //B = 21 ◦ 58 ′ 47.0845 ′′ ,L = 113 ◦ 25 ′ 31.4880 ′′ ,
                //x = 2433586.692,y = 250547.403
                IProj proj = new GaussProj(Spheroid.CreateBeiJing1954());

                double B  = SurMath.DMStoRAD(21.58470845);
                double L  = SurMath.DMStoRAD(113.25314880);
                double L0 = SurMath.DMStoRAD(111);
                proj.BLtoXYKM(B, L, L0, 0, 0, out double x, out double y);

                Assert.AreEqual(2433586.692, x, 1e-3);
                Assert.AreEqual(250547.403, y, 1e-3);
            }
        }
Exemple #2
0
        public void TestxytoBl()
        {
            {
                //B = 21 ◦ 58 ′ 47.0845 ′′ ,L = 113 ◦ 25 ′ 31.4880 ′′ ,

                IProj proj = new GaussProj(Spheroid.CreateBeiJing1954());

                double x = 2433586.692, y = 250547.403;
                proj.xytoBl(x, y, out double B, out double l, out _, out _);

                B = SurMath.RADtoDMS(B);
                l = SurMath.RADtoDMS(l);

                Assert.AreEqual(21.58470845, B, 1e-8);
                Assert.AreEqual(2.25314880, l, 1e-8);
            }
        }
        public void TestBLtoXY()
        {
            {
                double B  = SurMath.DMStoRad(21.58470845);
                double L  = SurMath.DMStoRad(113.25314880);
                double L0 = SurMath.DMStoRad(111);

                //Ellipsoid ellipsoid = new Ellipsoid(6378245, 298.3);
                Ellipsoid ellipsoid = Ellipsoid.CreateBeijing1954();
                IProj     proj      = new GaussProj(ellipsoid);
                var       xy        = proj.BLtoXY(B, L, L0, 0, 0);

                Assert.AreEqual(2433586.692, xy.X, 0.001);
                Assert.AreEqual(250547.403, xy.Y, 0.001);
            }

            //数据来自《大地测量学基础》2版P193
            {
                double B  = SurMath.DMStoRad(17.33557339);
                double L  = SurMath.DMStoRad(119.15521159);
                double L0 = SurMath.DMStoRad(117);

                Ellipsoid ellipsoid = Ellipsoid.CreateBeijing1954();
                IProj     proj      = new GaussProj(ellipsoid);
                var       xy        = proj.BLtoXY(B, L, L0, 0, 0);

                Assert.AreEqual(1944359.6070, xy.X, 0.003);
                Assert.AreEqual(240455.4563, xy.Y, 0.001);
            }

            //数据来自《大地测量学基础》2版P193
            {
                double B  = SurMath.DMStoRad(17.33557339);
                double L  = SurMath.DMStoRad(119.15521159);
                double L0 = SurMath.DMStoRad(117);

                Ellipsoid ellipsoid = Ellipsoid.CreateXiAn1980();
                IProj     proj      = new GaussProj(ellipsoid);
                var       xy        = proj.BLtoXY(B, L, L0, 0, 0);

                Assert.AreEqual(1944325.8030, xy.X, 0.001);
                Assert.AreEqual(240451.5085, xy.Y, 0.001);
            }
        }
        public void TestXYtoBL()
        {
            {
                double x = 2433586.692, y = 250547.403;
                double L0 = SurMath.DMStoRad(111);

                Ellipsoid ellipsoid = Ellipsoid.CreateBeijing1954();
                IProj     proj      = new GaussProj(ellipsoid);
                //IProj proj = new UTMProj(ellipsoid);
                var BL = proj.XYtoBL(x, y, L0, 0, 0);

                Assert.AreEqual(21.58470845, SurMath.RadtoDMS(BL.B), 1e-8);
                Assert.AreEqual(113.25314880, SurMath.RadtoDMS(BL.L), 1e-8);

                x  = 3380330.773; y = 320089.9761;
                BL = proj.XYtoBL(x, y, L0, 0, 0);

                //此处的秒按常规处理会出现59.999996秒的问题
                Assert.AreEqual(30.30, SurMath.RadtoDMS(BL.B), 1e-7);
                Assert.AreEqual(114.20, SurMath.RadtoDMS(BL.L), 1e-7);
            }

            //数据来自《大地测量学基础》2版P194
            {
                double x = 1944359.6070, y = 240455.4563;
                double L0 = SurMath.DMStoRad(117);

                Ellipsoid ellipsoid = Ellipsoid.CreateBeijing1954();
                IProj     proj      = new GaussProj(ellipsoid);
                //IProj proj = new UTMProj(ellipsoid);
                var BL = proj.XYtoBL(x, y, L0, 0, 0);

                Assert.AreEqual(17.33557338, SurMath.RadtoDMS(BL.B), 1e-8);
                Assert.AreEqual(119.15521150, SurMath.RadtoDMS(BL.L), 1e-8);
            }
        }