Class: BillboardGraphics

BillboardGraphics

new BillboardGraphics(optionsopt)

Describes a two dimensional icon located at the position of the containing Entity.


Example billboards

Parameters:
Name Type Attributes Description
options Object <optional>
 Object with the following properties:
Properties
Name Type Attributes Default Description
image Property <optional>
 A Property specifying the Image, URI, or Canvas to use for the billboard.
show Property <optional>
 true A boolean Property specifying the visibility of the billboard.
scale Property <optional>
 1.0 A numeric Property specifying the scale to apply to the image size.
horizontalOrigin Property <optional>
 HorizontalOrigin.CENTER A Property specifying the HorizontalOrigin.
verticalOrigin Property <optional>
 VerticalOrigin.CENTER A Property specifying the VerticalOrigin.
eyeOffset Property <optional>
 Cartesian3.ZERO A Cartesian3 Property specifying the eye offset.
pixelOffset Property <optional>
 Cartesian2.ZERO A Cartesian2 Property specifying the pixel offset.
rotation Property <optional>
 0 A numeric Property specifying the rotation about the alignedAxis.
alignedAxis Property <optional>
 Cartesian3.ZERO A Cartesian3 Property specifying the unit vector axis of rotation.
width Property <optional>
 A numeric Property specifying the width of the billboard in pixels, overriding the native size.
height Property <optional>
 A numeric Property specifying the height of the billboard in pixels, overriding the native size.
color Property <optional>
 Color.WHITE A Property specifying the tint Color of the image.
scaleByDistance Property <optional>
 A NearFarScalar Property used to scale the point based on distance from the camera.
translucencyByDistance Property <optional>
 A NearFarScalar Property used to set translucency based on distance from the camera.
pixelOffsetScaleByDistance Property <optional>
 A NearFarScalar Property used to set pixelOffset based on distance from the camera.
imageSubRegion Property <optional>
 A Property specifying a BoundingRectangle that defines a sub-region of the image to use for the billboard, rather than the entire image, measured in pixels from the bottom-left.
sizeInMeters Property <optional>
 A boolean Property specifying whether this billboard's size should be measured in meters.
heightReference Property <optional>
 HeightReference.NONE A Property specifying what the height is relative to.
distanceDisplayCondition Property <optional>
 A Property specifying at what distance from the camera that this billboard will be displayed.
Source:

Members

alignedAxis :Property

Gets or sets the Cartesian3 Property specifying the unit vector axis of rotation in the fixed frame. When set to Cartesian3.ZERO the rotation is from the top of the screen.
Type:
Default Value:
  • Cartesian3.ZERO
Source:

color :Property

Gets or sets the Property specifying the Color that is multiplied with the image. This has two common use cases. First, the same white texture may be used by many different billboards, each with a different color, to create colored billboards. Second, the color's alpha component can be used to make the billboard translucent as shown below. An alpha of 0.0 makes the billboard transparent, and 1.0 makes the billboard opaque.

default
 alpha : 0.5

Type:
Default Value:
  • Color.WHITE
Source:

(readonly) definitionChanged :Event

Gets the event that is raised whenever a property or sub-property is changed or modified.
Type:
Source:

distanceDisplayCondition :Property

Gets or sets the DistanceDisplayCondition Property specifying at what distance from the camera that this billboard will be displayed.
Type:
Source:

distanceDisplayCondition :Property

Gets or sets the DistanceDisplayCondition Property specifying at what distance from the camera that this polygon will be displayed.
Type:
Source:

eyeOffset :Property

Gets or sets the Cartesian3 Property specifying the billboard's offset in eye coordinates. Eye coordinates is a left-handed coordinate system, where x points towards the viewer's right, y points up, and z points into the screen.

An eye offset is commonly used to arrange multiple billboards or objects at the same position, e.g., to arrange a billboard above its corresponding 3D model.

Below, the billboard is positioned at the center of the Earth but an eye offset makes it always appear on top of the Earth regardless of the viewer's or Earth's orientation.

b.eyeOffset = new Cartesian3(0.0, 8000000.0, 0.0);

Type:
Default Value:
  • Cartesian3.ZERO
Source:

height :Property

Gets or sets the numeric Property specifying the height of the billboard in pixels. When undefined, the native height is used.
Type:
Source:

heightReference :Property

Gets or sets the Property specifying the HeightReference.
Type:
Default Value:
  • HeightReference.NONE
Source:

horizontalOrigin :Property

Gets or sets the Property specifying the HorizontalOrigin.
Type:
Default Value:
  • HorizontalOrigin.CENTER
Source:

image :Property

Gets or sets the Property specifying the Image, URI, or Canvas to use for the billboard.
Type:
Source:

imageSubRegion :Property

Gets or sets the Property specifying a BoundingRectangle that defines a sub-region of the image to use for the billboard, rather than the entire image, measured in pixels from the bottom-left.
Type:
Source:

pixelOffset :Property

Gets or sets the Cartesian2 Property specifying the billboard's pixel offset in screen space from the origin of this billboard. This is commonly used to align multiple billboards and labels at the same position, e.g., an image and text. The screen space origin is the top, left corner of the canvas; x increases from left to right, and y increases from top to bottom.

default
 b.pixeloffset = new Cartesian2(50, 25);
The billboard's origin is indicated by the yellow point.

Type:
Default Value:
  • Cartesian2.ZERO
Source:

pixelOffsetScaleByDistance :Property

Gets or sets NearFarScalar Property specifying the pixel offset of the billboard based on the distance from the camera. A billboard's pixel offset will interpolate between the NearFarScalar#nearValue and NearFarScalar#farValue while the camera distance falls within the upper and lower bounds of the specified NearFarScalar#near and NearFarScalar#far. Outside of these ranges the billboard's pixel offset remains clamped to the nearest bound.
Type:
Source:

rotation :Property

Gets or sets the numeric Property specifying the rotation of the image counter clockwise from the alignedAxis.
Type:
Default Value:
  • 0
Source:

scale :Property

Gets or sets the numeric Property specifying the uniform scale to apply to the image. A scale greater than 1.0 enlarges the billboard while a scale less than 1.0 shrinks it.


From left to right in the above image, the scales are 0.5, 1.0, and 2.0.

Type:
Default Value:
  • 1.0
Source:

scaleByDistance :Property

Gets or sets NearFarScalar Property specifying the scale of the billboard based on the distance from the camera. A billboard's scale will interpolate between the NearFarScalar#nearValue and NearFarScalar#farValue while the camera distance falls within the upper and lower bounds of the specified NearFarScalar#near and NearFarScalar#far. Outside of these ranges the billboard's scale remains clamped to the nearest bound.
Type:
Source:

show :Property

Gets or sets the boolean Property specifying the visibility of the billboard.
Type:
Default Value:
  • true
Source:

sizeInMeters :Property

Gets or sets the boolean Property specifying if this billboard's size will be measured in meters.
Type:
Default Value:
  • false
Source:

translucencyByDistance :Property

Gets or sets NearFarScalar Property specifying the translucency of the billboard based on the distance from the camera. A billboard's translucency will interpolate between the NearFarScalar#nearValue and NearFarScalar#farValue while the camera distance falls within the upper and lower bounds of the specified NearFarScalar#near and NearFarScalar#far. Outside of these ranges the billboard's translucency remains clamped to the nearest bound.
Type:
Source:

verticalOrigin :Property

Gets or sets the Property specifying the VerticalOrigin.
Type:
Default Value:
  • VerticalOrigin.CENTER
Source:

width :Property

Gets or sets the numeric Property specifying the billboard's width in pixels. When undefined, the native width is used.
Type:
Source:

Methods

clone(resultopt) → {BillboardGraphics}

Duplicates this instance.
Parameters:
Name Type Attributes Description
result BillboardGraphics <optional>
 The object onto which to store the result.
Source:
Returns:
The modified result parameter or a new instance if one was not provided.
Type
BillboardGraphics

merge(source)

Assigns each unassigned property on this object to the value of the same property on the provided source object.
Parameters:
Name Type Description
source BillboardGraphics The object to be merged into this object.
Source: