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ArcGIS Pro SDK （九）几何 2 坐标
文章目录
环境：Visual Studio 2022 + .NET6 + ArcGIS Pro SDK 3.0
1 矢量极坐标
Coordinate3D polarVector = new Coordinate3D(0, 7, 0); Tuple<double, double, double> polarComponents = polarVector.QueryPolarComponents(); // polarComponents.Item1 = 0 (方位角) // polarComponents.Item2 = 0 (倾角) // polarComponents.Item3 = 7 (大小) polarVector.SetPolarComponents(Math.PI / 4, Math.PI / 2, 8); polarComponents = polarVector.QueryComponents(); // polarComponents.Item1 = 0 (x) // polarComponents.Item2 = 0 (y) // polarComponents.Item3 = 7 (z) 2 获取矢量倾角
Coordinate3D v = new Coordinate3D(0, 0, 7); double inclination = v.Inclination; // inclination = PI/2 v.SetComponents(-2, -3, 0); inclination = v.Inclination; // inclination = 0 v.SetComponents(0, 0, -2); inclination = v.Inclination; // inclination = -PI/2 3 获取矢量方位角
Coordinate3D vector = new Coordinate3D(0, 7, 0); double azimuth = vector.Azimuth; // azimuth = 0 vector.SetComponents(1, 1, 42); azimuth = vector.Azimuth; double degrees = AngularUnit.Degrees.ConvertFromRadians(azimuth); // degrees = 45 vector.SetComponents(-8, 8, 2); azimuth = vector.Azimuth; degrees = AngularUnit.Degrees.ConvertFromRadians(azimuth); // degrees = 315 4 向量运算
// 简单的3D向量 Coordinate3D v = new Coordinate3D(0, 1, 0); // v.Magnitude = 1 Coordinate3D other = new Coordinate3D(-1, 0, 0); // other.Magnitude = -1 double dotProduct = v.DotProduct(other); // dotProduct = 0 Coordinate3D crossProduct = v.CrossProduct(other); // crossProduct.X = 0 // crossProduct.Y = 0 // crossProduct.Z = 1 Coordinate3D addVector = v.AddCoordinate3D(other); // addVector.X = -1 // addVector.Y = 1 // addVector.Z = 0 // 绕x轴旋转 Coordinate3D w = v; w.Rotate(Math.PI, other); // w.X = 0 // w.Y = -1 // w.Z = 0 w.Scale(0.5); // w.X = 0 // w.Y = -0.5 // w.Z = 0 w.Scale(-4); // w.X = 0 // w.Y = 2 // w.Z = 0 // w.Magnitude = 2 w.Move(3, 2, 0); // w.X = 3 // w.Y = 4 // w.Z = 0 // w.Magnitude = 5 Coordinate3D emptyVector = new Coordinate3D(); // emptyVector = (0, 0, 0) emptyVector.SetEmpty(); // emptyVector = (Nan, Nan, Nan) Coordinate3D c1 = new Coordinate3D(2, 3, 4); Coordinate3D c2 = new Coordinate3D(9, -1, 3); var result_add = c1 + c2; // result_add = (11, 2, 7) var result_sub = c1 - c2; // result_sub = (-7, 4, 1) var b = result_sub != result_add; // b = true result_add = emptyVector + c1; // result_add = (Nan, Nan, Nan) b = result_add == emptyVector; // b = true 5 2D 矢量操作
Coordinate2D v = new Coordinate2D(0, 1); // v.Magnitude = 1 Coordinate2D other = new Coordinate2D(-1, 0); double dotProduct = v.DotProduct(other); // dotProduct = 0 Coordinate2D w = v + other; // w = (-1, 1) w += other; // w = (-2, 1) w -= other; // w = (-1, 1) w = v; w.Rotate(Math.PI, other); // w = (-2, -1) w = other; w.Scale(-4); // w = (4, 0) // w.Magnitude = 4 w.Move(-1, 4); // w = (3, 4) // w.Magnitude = 5 w.Move(-6, -1); Tuple<double, double> components = w.QueryComponents(); // components = (-3, 3) // w.Magnitude = 3 * Math.Sqrt(2) Coordinate2D unitVector = w.GetUnitVector(); // w = (-Math.Sqrt(2) / 2, Math.Sqrt(2) / 2) // w.Magnitude = 1 w.SetComponents(3, 4); 6 生成器
// 点列表 List<MapPoint> points = new List<MapPoint> { MapPointBuilderEx.CreateMapPoint(0, 0, 2, 3, 1), MapPointBuilderEx.CreateMapPoint(1, 1, 5, 6), MapPointBuilderEx.CreateMapPoint(2, 1, 6), MapPointBuilderEx.CreateMapPoint(0, 0) }; // 将有属性，因为它是通过便捷方法创建的 Polyline polylineWithAttrs = PolylineBuilderEx.CreatePolyline(points); bool hasZ = polylineWithAttrs.HasZ; // hasZ = true bool hasM = polylineWithAttrs.HasM; // hasM = true bool hasID = polylineWithAttrs.HasID; // hasID = true // 将没有属性，因为它被指定为参数 Polyline polylineWithoutAttrs = PolylineBuilderEx.CreatePolyline(points, AttributeFlags.None); hasZ = polylineWithoutAttrs.HasZ; // hasZ = false hasM = polylineWithoutAttrs.HasM; // hasM = false hasID = polylineWithoutAttrs.HasID; // hasID = false // 将有属性，因为它是通过便捷方法创建的 Polygon polygonWithAttrs = PolygonBuilderEx.CreatePolygon(points); hasZ = polygonWithAttrs.HasZ; // hasZ = true hasM = polygonWithAttrs.HasM; // hasM = true hasID = polygonWithAttrs.HasID; // hasID = true // 将没有属性，因为它被指定为参数 Polygon polygonWithoutAttrs = PolygonBuilderEx.CreatePolygon(points, AttributeFlags.None); hasZ = polygonWithoutAttrs.HasZ; // hasZ = false hasM = polygonWithoutAttrs.HasM; // hasM = false hasID = polygonWithoutAttrs.HasID; // hasID = false // 将没有属性，因为它被指定为参数 PolylineBuilderEx polylineB = new PolylineBuilderEx(points, AttributeFlags.None); hasZ = polylineB.HasZ; // hasZ = false hasM = polylineB.HasM; // hasM = false hasID = polylineB.HasID; // hasID = false // 将有属性，因为它传递了一个带属性的折线 polylineB = new PolylineBuilderEx(polylineWithAttrs); hasZ = polylineB.HasZ; // hasZ = true hasM = polylineB.HasM; // hasM = true hasID = polylineB.HasID; // hasID = true // 将没有属性，因为它传递了一个不带属性的折线 polylineB = new PolylineBuilderEx(polylineWithoutAttrs); hasZ = polylineB.HasZ; // hasZ = false hasM = polylineB.HasM; // hasM = false hasID = polylineB.HasID; // hasID = false // 将没有属性，因为它被指定为参数 PolygonBuilderEx polygonB = new PolygonBuilderEx(points, AttributeFlags.None); hasZ = polygonB.HasZ; // hasZ = false hasM = polygonB.HasM; // hasM = false hasID = polygonB.HasID; // hasID = false // 将有属性，因为它传递了一个带属性的多边形 polygonB = new PolygonBuilderEx(polygonWithAttrs); hasZ = polygonB.HasZ; // hasZ = true hasM = polygonB.HasM; // hasM = true hasID = polygonB.HasID; // hasID = true // 将没有属性，因为它传递了一个不带属性的多边形 polygonB = new PolygonBuilderEx(polygonWithoutAttrs); hasZ = polygonB.HasZ; // hasZ = true hasM = polygonB.HasM; // hasM = true hasID = polygonB.HasID; // hasID = true 