MultipointShape¶
Namespace: ThinkGeo.Core
This class represents one or more point shapes.
public class MultipointShape : PointBaseShape
Inheritance Object → BaseShape → PointBaseShape → MultipointShape
Remarks:
None
Properties¶
Points¶
This property is the collection of points that make up the MultipointShape.
public Collection<PointShape> Points { get; }
Property Value¶
Remarks:
None
Id¶
The id of the shape.
public string Id { get; set; }
Property Value¶
Tag¶
The tag of the shape.
public object Tag { get; set; }
Property Value¶
Constructors¶
MultipointShape()¶
This constructor creates a MultipointShape.
public MultipointShape()
Remarks:
None
MultipointShape(IEnumerable<PointShape>)¶
This constructor creates a MultipointShape by passing in predefined points.
public MultipointShape(IEnumerable<PointShape> points)
Parameters¶
points IEnumerable<PointShape>
This parameter specifies the points passed into the MultiPointShape.
Exceptions¶
ArgumentNullException
If you pass a null as the points, we will throw an ArgumentNullException.
Remarks:
None
MultipointShape(IEnumerable<Feature>)¶
This constructor creates a MultipointShape by passing in predefined point features.
public MultipointShape(IEnumerable<Feature> pointFeatures)
Parameters¶
pointFeatures IEnumerable<Feature>
This parameter specifies the points passed into the MultiPointShape.
Remarks:
None
MultipointShape(Feature)¶
This constructor creates a MultipointShape by passing in a Multipoint type Feature.
public MultipointShape(Feature multipointFeature)
Parameters¶
multipointFeature Feature
This parameter specifies the Multipoint feature that will be used to create the Multipoint shape.
Exceptions¶
ArgumentException
If you pass a feature that contains a shape which is not a MultipointShape, we will throw an ArgumentException.
MultipointShape(String)¶
This constructor creates the MultipointShape.
public MultipointShape(string wellKnownText)
Parameters¶
wellKnownText String
This parameter is the well-known text used to build the shape.
Exceptions¶
ArgumentException
Passing invalid well-known text in the wellKnownText parameter will throw an ArgumentException.
ArgumentNullException
Passing a null as the wellKnownText parameter will throw an ArgumentNullException.
Remarks:
None
MultipointShape(Byte[])¶
This constructor creates the LineShape.
public MultipointShape(Byte[] wellKnownBinary)
Parameters¶
wellKnownBinary Byte[]
This parameter is the well-known binary used to build the shape.
Exceptions¶
ArgumentException
Passing invalid well-known binary in the bytes parameter will throw an ArgumentException.
ArgumentNullException
Passing a null as the bytes parameter will throw an ArgumentNullException.
Remarks:
None
Methods¶
CloneDeepCore()¶
This method returns a complete copy of the shape without any references in common.
protected BaseShape CloneDeepCore()
Returns¶
This method returns a complete copy of the shape without any references in
common.
Remarks:
When you override this method, you need to ensure that there are no references in common between the original and the copy.
GetCenterPointCore()¶
protected PointShape GetCenterPointCore()
Returns¶
ScaleUp(Double)¶
This method increases the size of the shape by the percentage given in the percentage parameter.
public void ScaleUp(double percentage)
Parameters¶
percentage Double
This is the percentage by which to increase the shape�s size.
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
Passing an invalid percentage which is less than 0 will throw an ArgumentOutOfRangeException.
Remarks:
This method is useful when you would like to increase the size of the shape. Note that a larger percentage will scale the shape up faster, as you are applying the operation multiple times. There is also a ScaleDown method that will shrink the shape.
ScaleUpCore(Double)¶
This method increases the size of the shape by the percentage given in the percentage parameter.
protected void ScaleUpCore(double percentage)
Parameters¶
percentage Double
This is the percentage by which to increase the shape�s size.
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
Passing an invalid percentage which is less than 0 will throw an ArgumentOutOfRangeException.
Remarks:
This method is useful when you would like to increase the size of the shape. Note that a larger percentage will scale the shape up faster, as you are applying the operation multiple times. There is also a ScaleDown method that will shrink the shape.
ScaleDown(Double)¶
This method decreases the size of the shape by the percentage given in the percentage parameter.
public void ScaleDown(double percentage)
Parameters¶
percentage Double
This is the percentage by which to decrease the shape�s size.
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
Passing an invalid percentage which is less than 0 will throw an ArgumentOutOfRangeException.
ScaleDownCore(Double)¶
This method decreases the size of the shape by the percentage given in the percentage parameter.
protected void ScaleDownCore(double percentage)
Parameters¶
percentage Double
This is the percentage by which to decrease the shape�s size.
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
Passing an invalid percentage which is less than 0 will throw an ArgumentOutOfRangeException.
ConvexHull()¶
This method returns the convex hull of the shape (defined as the smallest convex ring that contains all the points in the shape).
public RingShape ConvexHull()
Returns¶
This method returns the convex hull of the shape (defined as the smallest convex
ring that contains all the points in the shape).
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
Remarks:
This method is useful when you want to create a perimeter around the shape. For example, if you had a MultiPolygon which represented buildings on a campus, you could easily get the convex hull of the buildings and determine the perimeter of all of the buildings together. This also works with MultiPoint shapes, where each point may represent a certain type of person you are doing statistics on. With convex hull, you can get an idea of the regions those points are located in.
ConvexHullCore()¶
This method returns the convex hull of the shape (defined as the smallest convex ring that contains all the points in the shape).
protected RingShape ConvexHullCore()
Returns¶
This method returns the convex hull of the shape (defined as the smallest convex
ring that contains all the points in the shape).
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
Remarks:
This method is useful when you want to create a perimeter around the shape. For example, if you had a MultiPolygon which represented buildings on a campus, you could easily get the convex hull of the buildings and determine the perimeter of all of the buildings together. This also works with MultiPoint shapes, where each point may represent a certain type of person you are doing statistics on. With convex hull, you can get an idea of the regions those points are located in.
RegisterCore(PointShape, PointShape, DistanceUnit, GeographyUnit)¶
This method returns a BaseShape which has been registered from its original coordinate system to another based on two anchor PointShapes.
protected BaseShape RegisterCore(PointShape fromPoint, PointShape toPoint, DistanceUnit fromUnit, GeographyUnit toUnit)
Parameters¶
fromPoint PointShape
This parameter is the anchor PointShape in the coordinate of origin.
toPoint PointShape
This parameter is the anchor PointShape in the coordinate of destination.
fromUnit DistanceUnit
This parameter is the DistanceUnit of the coordinate of origin.
toUnit GeographyUnit
This parameter is the GeographyUnit of the coordinate of destination.
Returns¶
BaseShape
This method returns a BaseShape which has been registered from its original coordinate system to another based on two anchor PointShapes.
Exceptions¶
ArgumentOutOfRangeException
If you pass in a fromUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
ArgumentOutOfRangeException
If you pass in a toUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentNullException
Passing a null as the fromPoint parameter will throw an ArgumentNullException.
ArgumentNullException
Passing a null as the toPoint parameter will throw an ArgumentNullException.
Remarks:
Registering allows you to take a geometric shape generated in a planar system and attach it to the ground in a Geographic Unit.
A common scenario is integrating geometric shapes from external programs (such as CAD software or a modeling system) and placing them onto a map. You may have the schematics of a building in a CAD system and the relationship between all the points of the building are in feet. You want to then take the CAD image and attach it to where it really exists on a map. You would use the register method to do this.
Registering is also useful for scientific modeling, where software models things such as a plume of hazardous materials or the fallout from a volcano. The modeling software typically generates these models in a fictitious planar system. You would then use the register to take the abstract model and attach it to a map with real coordinates.
TranslateByOffsetCore(Double, Double, GeographyUnit, DistanceUnit)¶
This method moves the base shape from one location to another based on an X and Y offset distance.
protected void TranslateByOffsetCore(double xOffsetDistance, double yOffsetDistance, GeographyUnit shapeUnit, DistanceUnit distanceUnit)
Parameters¶
xOffsetDistance Double
This is the number of horizontal units of movement in the DistanceUnit specified as
the distanceUnit.
yOffsetDistance Double
This is the number of horizontal units of movement in the DistanceUnit specified as
the distanceUnit.
shapeUnit GeographyUnit
This is the GeographicUnit of the shape you are performing the operation on.
distanceUnit DistanceUnit
This is the DistanceUnit you would like to use as the measure of the translate. For example, if you select miles as your distanceUnit, then the xOffsetDistance and yOffsetDistance will be calculated in miles.
Exceptions¶
ArgumentOutOfRangeException
If you pass in a distanceUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
ArgumentOutOfRangeException
If you pass in a shapeUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
InvalidOperationException
In the event you attempt to call this method from a shape which has no points, it will throw an InvalidOperationException.
Remarks:
This method moves the base shape from one location to another based on an X and Y offset distance. It is important to note that with this overload the X and Y offset units are based off of the distanceUnit parameter. For example if your shape is in decimal degrees and you call this method with an X offset of one and a Y offset of one and you're going to move this shape one unit of the distanceUnit in the horizontal direction and one unit of the distanceUnit in the vertical direction. In this way you can easily move a shape in decimal degrees five miles to on the X axis and 3 miles on the Y axis.
TranslateByDegreeCore(Double, Double, GeographyUnit, DistanceUnit)¶
This method moves the shape from one location to another based on a direction in degrees and distance.
protected void TranslateByDegreeCore(double distance, double angleInDegrees, GeographyUnit shapeUnit, DistanceUnit distanceUnit)
Parameters¶
distance Double
The distance is the number of units to move the shape in the angle specified. The
distance unit will be the same as the GeographyUnit for the shape. The distance must be
greater than or equal to 0.
angleInDegrees Double
A number between 0 and 360 degrees that represents the direction you wish to move the shape, with 0 being up.
shapeUnit GeographyUnit
This is the GeographicUnit of the shape you are performing the operation on.
distanceUnit DistanceUnit
This is the DistanceUnit you would like to use for the distance parameter. For
example, if you select miles as your distanceUnit, then the distance will be measured
in miles.
Exceptions¶
ArgumentOutOfRangeException
Passing an invalid angleInDegrees which is not between 0 and 360 will throw an ArgumentOutOfRangeException.
InvalidOperationException
In the event you attempt to call this method on a shape which has less than two points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
Passing an invalid distance which is not greater than or equal to 0 will throw an ArgumentOutOfRangeException.
ArgumentOutOfRangeException
If you pass in a shapeUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
ArgumentOutOfRangeException
If you pass in a distanceUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
Remarks:
This method moves the base shape from one location to another, based on an angleInDegrees and distance parameter. With this overload, it is important to note that the distance units are the same GeographicUnit as the shape. For example, if your shape is in decimal degrees and you call this method with a distance of 1, you're going to move this shape 1 decimal degree in direction of the angleInDegrees. In many cases it is more useful to specify the DistanceUnit of movement, such as in miles or yards, so for these scenarios there is another overload you may want to use instead.
If you pass a distance of 0, then the operation is ignored.
RotateCore(PointShape, Double)¶
This method rotates the shape a number of degrees based on a pivot point.
protected void RotateCore(PointShape pivotPoint, double degreeAngle)
Parameters¶
pivotPoint PointShape
The pivotPoint represents the center of rotation.
degreeAngle Double
The number of degrees of rotation required from 0 to 360.
Exceptions¶
ArgumentNullException
If you pass a null as the pivotPoint, we will throw an ArgumentNullException.
ArgumentOutOfRangeException
Passing an invalid degreeAngle which is not between 0 and 360 will throw an ArgumentOutOfRangeException.
InvalidOperationException
In the event you attempt to call this method on a shape which is not valid, it will throw an InvalidOperationException.
Remarks:
This method rotates the shape a number of degrees based on a pivot point. By placing the pivot point in the center of the shape, you can achieve in-place rotation. By moving the pivot point outside of the center of the shape, you can translate the shape in a circular motion. Moving the pivot point further outside of the center will make the circular area larger.
GetClosestPointToCore(BaseShape, GeographyUnit)¶
This method returns the point of the current shape that is closest to the target shape.
protected PointShape GetClosestPointToCore(BaseShape targetShape, GeographyUnit shapeUnit)
Parameters¶
targetShape BaseShape
The shape you are trying to find the closest point to.
shapeUnit GeographyUnit
This is the GeographicUnit of the shape you are performing the operation on.
Returns¶
A PointShape representing the closest point of the current shape to the
targetShape.
Exceptions¶
ArgumentException
If you pass in a targetShape which does not have any points, we will throw an ArgumentException.
ArgumentNullException
If you pass a null as the targetShape, we will throw an ArgumentNullException.
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
If you pass in a shapeUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
Remarks:
This method returns the point of the current shape that is closest to the target shape. It is often the case that the point returned is not a point of the object itself. An example would be a line with two points that are far apart from each other. If you set the targetShape to be a point midway between the points but a short distance away from the line, the method would return a point that is on the line but not either of the two points that make up the line.
GetBoundingBoxCore()¶
This method calculates the smallest RectangleShape that encompasses the entire geometry.
protected RectangleShape GetBoundingBoxCore()
Returns¶
The RectangleShape returned is the smallest RectangleShape that can encompass the
entire geometry.
Exceptions¶
InvalidOperationException
In the event you attempt to get the bounding box from a shape which has no points, it will throw an InvalidOperationException.
Remarks:
The GetBoundingBox method calculates the smallest RectangleShape that can encompass the entire geometry by examining each point in the geometry.
Depending on the number of PointShapes and complexity of the geometry, this operation can take longer for larger objects.
If the shape is a PointShape, then the bounding box�s upper left and lower right points will be equal. This will create a RectangleShape with no area.
Overriding:
Please ensure that you validate the parameters being passed in and raise the exceptions defined above.
GetDistanceToCore(BaseShape, GeographyUnit, DistanceUnit)¶
This method computes the distance between the current shape and the targetShape.
protected double GetDistanceToCore(BaseShape targetShape, GeographyUnit shapeUnit, DistanceUnit distanceUnit)
Parameters¶
targetShape BaseShape
The shape you are trying to find the distance to.
shapeUnit GeographyUnit
This is the GeographyUnit of the shape you are performing the operation
on.
distanceUnit DistanceUnit
This is the DistanceUnit you would like to use for the distance parameter. For
example, if you select miles as your distanceUnit, then the distance will be measured
in miles.
Returns¶
This method returns the distance between the current shape and the
targetShape.
Exceptions¶
ArgumentException
If you pass in a targetShape which does not have any points, we will throw an ArgumentException.
ArgumentNullException
If you pass a null as the targetShape, we will throw an ArgumentNullException.
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentOutOfRangeException
If you pass in a shapeUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
ArgumentOutOfRangeException
If you pass in a distanceUnit that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
Remarks:
None
GetWellKnownTextCore(RingOrder)¶
This method returns the well-known text representation of this shape.
protected string GetWellKnownTextCore(RingOrder outerRingOrder)
Parameters¶
outerRingOrder RingOrder
Returns¶
String
This method returns a string that represents the shape in well-known text.
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
Remarks:
This method returns a string that represents the shape in well-known text. Well-known text allows you to describe a geometry as a string of text. Well-known text is useful when you want to save a geometry in a format such as a text file, or when you simply want to cut and paste the text between other applications. An alternative to well-known text is well-known binary, which is a binary representation of a geometry object. We have methods that work with well-known binary as well. Below are some samples of what well-known text might look like for various kinds of geometric shapes.
POINT(5 17)
LINESTRING(4 5,10 50,25 80)
POLYGON((2 2,6 2,6 6,2 6,2 2),(3 3,4 3,4 4,3 4,3 3))
MULTIPOINT(3.7 9.7,4.9 11.6)
MULTILINESTRING((4 5,11 51,21 26),(-4 -7,-9 -7,-14 -3))
MULTIPOLYGON(((2 2,6 2,6 6,2 6,2 2),(3 3,4 3,4 4,3 4,3 3)),((4 4,7 3,7 5,4 4)))
GetWellKnownTypeCore()¶
This method returns the well-known type for the shape.
protected WellKnownType GetWellKnownTypeCore()
Returns¶
WellKnownType
This method returns the well-known type for the shape.
Remarks:
None
LoadFromWellKnownDataCore(String)¶
This method hydrates the current shape with its data from well-known text.
protected void LoadFromWellKnownDataCore(string wellKnownText)
Parameters¶
wellKnownText String
This parameter is the well-known text you will use to hydrate your object.
Exceptions¶
ArgumentException
Passing invalid well-known text in the wellKnownText parameter will throw an ArgumentException.
ArgumentNullException
Passing a null as the wellKnownText parameter will throw an ArgumentNullException.
Remarks:
None
LoadFromWellKnownDataCore(Byte[])¶
This method hydrates the current shape with its data from well-known binary.
protected void LoadFromWellKnownDataCore(Byte[] wellKnownBinary)
Parameters¶
wellKnownBinary Byte[]
This parameter is the well-known binary used to populate the shape.
Exceptions¶
ArgumentException
Passing invalid well-known binary in the bytes parameter will throw an ArgumentException.
ArgumentNullException
Passing a null as the bytes parameter will throw an ArgumentNullException.
Remarks:
This is used when you want to hydrate a shape based on well-known binary. You can create the shape and then load the well-known binary using this method.
ValidateCore(ShapeValidationMode)¶
This method returns a ShapeValidationResult based on a series of tests.
protected ShapeValidationResult ValidateCore(ShapeValidationMode validationMode)
Parameters¶
validationMode ShapeValidationMode
This parameter determines whether the test is simple or advanced. In some cases, the
advanced tests can take some time. The simple test is designed to always be
fast.
Returns¶
This method returns a ShapeValidationResult based on a series of
tests.
Exceptions¶
ArgumentOutOfRangeException
If you pass in a validationMode that is not defined in the enumeration, it will throw a ArgumentOutOfRangeException.
Remarks:
We use this method, with the simple enumeration, internally before doing any kind of other methods on the shape. In this way, we are able to verify the integrity of the shape itself. If you wish to test things such as whether a polygon self-intersects, we invite you to call this method with the advanced ShapeValidationMode. One thing to consider is that for complex polygon shapes this operation could take some time, which is why we only run the basic, faster test. If you are dealing with polygon shapes that are suspect, we suggest you run the advanced test.
GetCrossingCore(BaseShape)¶
This method returns the crossing points between the current shape and the passed-in target shape.
protected MultipointShape GetCrossingCore(BaseShape targetShape)
Parameters¶
targetShape BaseShape
The target shape you wish to get crossing with.
Returns¶
This method returns the crossing points between the current shape and the passed-in target shape.
Exceptions¶
InvalidOperationException
In the event you attempt to call this method on a shape which has no points, it will throw an InvalidOperationException.
ArgumentNullException
If you pass a null as the targetShape, we will throw an ArgumentNullException.
Remarks:
As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.
RemoveVertex(Vertex, MultipointShape)¶
This method removes the point which the same coordinate as selected vertex from multipoint shape.
public static bool RemoveVertex(Vertex selectedVertex, MultipointShape multipointShape)
Parameters¶
selectedVertex Vertex
The selected vertex must be the same coordinate as a point of multipoint shape, otherwise it will return false and multipoint shape will keep the same.
multipointShape MultipointShape
The multipoint shape will be removed one vertex.
Returns¶
Boolean
If remove sucess it will return true, otherwise return false.
RemoveVertex(Vertex)¶
This method removes the point which the same coordinate as selected vertex from multipoint shape.
public bool RemoveVertex(Vertex selectedVertex)
Parameters¶
selectedVertex Vertex
The selected vertex must be the same coordinate of a point of multipoint shape, otherwise it will return false and multipoint shape will keep the same.
Returns¶
Boolean
If remove sucess it will return true, otherwise return false.