Describes a polygon defined by an hierarchy of linear rings which make up the outer shape and any nested holes.
The polygon conforms to the curvature of the globe and can be placed on the surface or
at altitude and can optionally be extruded into a volume.
参数名称 | 类型 | 描述信息 |
---|---|---|
options |
PolygonGraphics.ConstructorOptions | 可选 Object describing initialization options |
Demo:
参考:
成员(属性)
arcType : Property|undefined
Gets or sets the
ArcType
Property specifying the type of lines the polygon edges use.
-
默认值:
ArcType.GEODESIC
classificationType : Property|undefined
Gets or sets the
ClassificationType
Property specifying whether this polygon will classify terrain, 3D Tiles, or both when on the ground.
-
默认值:
ClassificationType.BOTH
closeBottom : Property|undefined
Gets or sets a boolean specifying whether or not the bottom of an extruded polygon is included.
closeTop : Property|undefined
Gets or sets a boolean specifying whether or not the top of an extruded polygon is included.
readonly definitionChanged : Event
Gets the event that is raised whenever a property or sub-property is changed or modified.
distanceDisplayCondition : Property|undefined
Gets or sets the
DistanceDisplayCondition
Property specifying at what distance from the camera that this polygon will be displayed.
extrudedHeight : Property|undefined
Gets or sets the numeric Property specifying the altitude of the polygon extrusion.
If
PolygonGraphics#perPositionHeight
is false, the volume starts at PolygonGraphics#height
and ends at this altitude.
If PolygonGraphics#perPositionHeight
is true, the volume starts at the height of each PolygonGraphics#hierarchy
position and ends at this altitude.
extrudedHeightReference : Property|undefined
Gets or sets the Property specifying the extruded
HeightReference
.
-
默认值:
HeightReference.NONE
fill : Property|undefined
Gets or sets the boolean Property specifying whether the polygon is filled with the provided material.
-
默认值:
true
granularity : Property|undefined
Gets or sets the numeric Property specifying the angular distance between points on the polygon.
-
默认值:
{CesiumMath.RADIANS_PER_DEGREE}
height : Property|undefined
Gets or sets the numeric Property specifying the constant altitude of the polygon.
-
默认值:
0.0
heightReference : Property|undefined
Gets or sets the Property specifying the
HeightReference
.
-
默认值:
HeightReference.NONE
hierarchy : Property|undefined
Gets or sets the Property specifying the
PolygonHierarchy
.
Gets or sets the Property specifying the material used to fill the polygon.
-
默认值:
Color.WHITE
outline : Property|undefined
Gets or sets the Property specifying whether the polygon is outlined.
-
默认值:
false
outlineColor : Property|undefined
Gets or sets the Property specifying the
Color
of the outline.
-
默认值:
Color.BLACK
outlineWidth : Property|undefined
Gets or sets the numeric Property specifying the width of the outline.
Note: This property will be ignored on all major browsers on Windows platforms. For details, see (@link https://github.com/CesiumGS/cesium/issues/40}.
-
默认值:
1.0
perPositionHeight : Property|undefined
Gets or sets the boolean specifying whether or not the the height of each position is used.
If true, the shape will have non-uniform altitude defined by the height of each
PolygonGraphics#hierarchy
position.
If false, the shape will have a constant altitude as specified by PolygonGraphics#height
.
shadows : Property|undefined
Get or sets the enum Property specifying whether the polygon
casts or receives shadows from light sources.
-
默认值:
ShadowMode.DISABLED
show : Property|undefined
Gets or sets the boolean Property specifying the visibility of the polygon.
-
默认值:
true
stRotation : Property|undefined
Gets or sets the numeric property specifying the rotation of the polygon texture counter-clockwise from north. Only has an effect if textureCoordinates is not defined.
-
默认值:
0
textureCoordinates : Property|undefined
A Property specifying texture coordinates as a
PolygonHierarchy
of Cartesian2
points. Has no effect for ground primitives.
zIndex : ConstantProperty|undefined
Gets or sets the zIndex Prperty specifying the ordering of ground geometry. Only has an effect if the polygon is constant and neither height or extrudedHeight are specified.
-
默认值:
0
方法
clone(result) → PolygonGraphics
Duplicates this instance.
参数名称 | 类型 | 描述信息 |
---|---|---|
result |
PolygonGraphics | 可选 The object onto which to store the result. |
返回值:
The modified result parameter or a new instance if one was not provided.
Assigns each unassigned property on this object to the value
of the same property on the provided source object.
参数名称 | 类型 | 描述信息 |
---|---|---|
source |
PolygonGraphics | The object to be merged into this object. |
定义的类型
Initialization options for the PolygonGraphics constructor
属性:
属性名称 | 类型 | 可选 | 默认值 | 描述信息 |
---|---|---|---|---|
show |
Property | boolean |
<可选> |
true | A boolean Property specifying the visibility of the polygon. |
hierarchy |
Property | PolygonHierarchy | Array.<Cartesian3> |
<可选> |
A Property specifying the PolygonHierarchy . |
|
height |
Property | number |
<可选> |
0 | A numeric Property specifying the altitude of the polygon relative to the ellipsoid surface. |
heightReference |
Property | HeightReference |
<可选> |
HeightReference.NONE | A Property specifying what the height is relative to. |
extrudedHeight |
Property | number |
<可选> |
A numeric Property specifying the altitude of the polygon's extruded face relative to the ellipsoid surface. | |
extrudedHeightReference |
Property | HeightReference |
<可选> |
HeightReference.NONE | A Property specifying what the extrudedHeight is relative to. |
stRotation |
Property | number |
<可选> |
0.0 | A numeric property specifying the rotation of the polygon texture counter-clockwise from north. Only has an effect if textureCoordinates is not defined. |
granularity |
Property | number |
<可选> |
Cesium.Math.RADIANS_PER_DEGREE | A numeric Property specifying the angular distance between each latitude and longitude point. |
fill |
Property | boolean |
<可选> |
true | A boolean Property specifying whether the polygon is filled with the provided material. |
material |
MaterialProperty | Color |
<可选> |
Color.WHITE | A Property specifying the material used to fill the polygon. |
outline |
Property | boolean |
<可选> |
false | A boolean Property specifying whether the polygon is outlined. |
outlineColor |
Property | Color |
<可选> |
Color.BLACK | A Property specifying the Color of the outline. |
outlineWidth |
Property | number |
<可选> |
1.0 | A numeric Property specifying the width of the outline. |
perPositionHeight |
Property | boolean |
<可选> |
false | A boolean specifying whether or not the height of each position is used. |
closeTop |
boolean | boolean |
<可选> |
true | When false, leaves off the top of an extruded polygon open. |
closeBottom |
boolean | boolean |
<可选> |
true | When false, leaves off the bottom of an extruded polygon open. |
arcType |
Property | ArcType |
<可选> |
ArcType.GEODESIC | The type of line the polygon edges must follow. |
shadows |
Property | ShadowMode |
<可选> |
ShadowMode.DISABLED | An enum Property specifying whether the polygon casts or receives shadows from light sources. |
distanceDisplayCondition |
Property | DistanceDisplayCondition |
<可选> |
A Property specifying at what distance from the camera that this polygon will be displayed. | |
classificationType |
Property | ClassificationType |
<可选> |
ClassificationType.BOTH | An enum Property specifying whether this polygon will classify terrain, 3D Tiles, or both when on the ground. |
zIndex |
ConstantProperty | number |
<可选> |
0 | A property specifying the zIndex used for ordering ground geometry. Only has an effect if the polygon is constant and neither height or extrudedHeight are specified. |
textureCoordinates |
Property | PolygonHierarchy |
<可选> |
A Property specifying texture coordinates as a PolygonHierarchy of Cartesian2 points. Has no effect for ground primitives. |