SphereOperator Class
Generates a sphere or a spherical pyramid from a point feature.
NuGet/Assembly: Carmenta.Engine.5.16.2.nupkg (in the CEOperators assembly)
Syntax
public class SphereOperator : UnaryOperatorRemarks
This operator generates spherical mesh features around points.
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You can also use it to make a spherical pyramid that approximates a radar lobe.
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In the general case, with LobeWidth < 360° and LobeHeight < 180°, the operator generates five mesh features for each input point. Each of them will have the same attributes as the input point feature, plus an extra attribute
surfaceType
whose value is an Atom that describes the surface; the possible values are
left
right
top
bottom
sphere
The generated mesh features have edges that can be displayed by a LineVisualizer. For the top and bottom surfaces, the edges follow the surface boundaries adjacent to the side surfaces and the sphere surface. For the left and right surfaces, the edges follow the boundary adjacent to the sphere surface, but not the ones adjacent to the top or bottom surfaces, since along those boundaries, there are already edges belonging to the top or bottom surface. Finally, for the sphere surface, the edges form a grid (or graticule) whose density depends on the Accuracy property, but the boundaries adjacent to the other surfaces do not have edges, since the other surfaces have edges there.
If LobeWidth and LobeHeight are fairly small, it may be appropriate to display edges only along the sharp boundaries of the pyramidal lobe, but not the grid on the spherical surface. To do this, use the condition
surfaceType != #sphere
on the LineVisualizer; note that the leading hash character for the constant Atom value is necessary in the expression syntax.
Inheritance Hierarchy
System.Object (not available in C#)
EngineObject
Operator
UnaryOperator
SphereOperator
Platforms
Windows, Linux, Android
SphereOperator Members
The SphereOperator type has the following members.
Constructors
| Name | Description |
|---|---|
| SphereOperator | Initializes a new instance of the SphereOperator class. |
Properties
| Name | Description |
|---|---|
| Accuracy | Gets or sets the accuracy of the spherical surface. |
| Description | Gets or sets a short description of the operator. Inherited from Operator |
| DisplayName | Gets or sets a display name for the operator. Inherited from Operator |
| Input | Gets or sets the input operator, from which this operator reads features. Inherited from UnaryOperator |
| IsDisposed | Gets a value that tells whether the current SphereOperator has been disposed. Inherited from EngineObject |
| IsoMetadataDocument | Gets or sets the path to an ISO 19139 metadata document for the operator. Inherited from Operator |
| LobeBearing | Gets or sets the horizontal bearing of the lobe. |
| LobeHeight | Gets or sets the height of the lobe. |
| LobePitch | Gets or sets the vertical direction of the lobe. |
| LobeRoll | Gets or sets the roll of the lobe. |
| LobeWidth | Gets or sets the width of the lobe. |
| Margin | Gets or sets a margin added to the view area when requesting data from the input operator. |
| Name | Gets or sets the name of the operator. Inherited from Operator |
| NativeHandle | Gets the native Carmenta Engine kernel object the current SphereOperator represents. Inherited from EngineObject |
| Radius | Gets or sets the radius of the sphere. |
| IUserProperties.UserProperties | Gets the AttributeSet that contains the user properties. Inherited from IUserProperties |
Methods
| Name | Description |
|---|---|
| Clone | Creates a copy of an object. Inherited from EngineObject |
| Dispose | Releases the reference to the native Carmenta Engine kernel instance the EngineObject represents. Inherited from EngineObject |
| Equals | Determines whether this instance is equal to another. Inherited from EngineObject |
| FindChildObject | Overloaded. Finds the child object with the specified name. Inherited from Operator |
| FlushCache | Marks the layer as flushed which will release cached resources during the next update. Inherited from Operator |
| GetChildObjects | Overloaded. Gets the child objects of the current object. Inherited from Operator |
| GetFeatures | Overloaded. Gets features from the operator chain. Inherited from Operator |
| GetLocalizedDescription | Gets a localized version of the operator description in a specific language. Inherited from Operator |
| GetLocalizedDisplayName | Gets a localized version of the operator display name in a specific language. Inherited from Operator |
| GetLocalizedIsoMetadataDocument | Gets the path to an ISO 19139 metadata document for a specific language. Inherited from Operator |
| GetRasterFeature | Overloaded. Gets raster features from the operator chain and merges them into a single raster. Inherited from Operator |
| HasLocalizedDescription | Checks if a localized version of the operator description is available in a specific language. Inherited from Operator |
| HasLocalizedDisplayName | Checks if a localized version of the operator display name is available in a specific language. Inherited from Operator |
| HasLocalizedIsoMetadataDocument | Checks if an ISO 19139 metadata document is available for a specific language. Inherited from Operator |
| SetLocalizedDescription | Sets a operator description in a specific language. Inherited from Operator |
| SetLocalizedDisplayName | Sets a operator display name in a specific language. Inherited from Operator |
| SetLocalizedIsoMetadataDocument | Sets the path to an ISO 19139 metadata document for the operator, for a specific language. Inherited from Operator |