RenderableTrailTrajectory

Inherits Renderable

Members

Name	Documentation	Type	Description	Optional
Color	This value determines the RGB main color for the lines and points of the trail	Color3	Value of type ‘Color3’	No
EndTime	The end time for the range of this trajectory. The date must be in ISO 8601 format: YYYY MM DD HH:mm:ss.xxx	String	A valid date in ISO 8601 format	No
SampleInterval	The interval between samples of the trajectory. This value (together with ‘TimeStampSubsampleFactor’) determines how far apart (in time) the samples are spaced along the trajectory. The time interval between ‘StartTime’ and ‘EndTime’ is split into ‘SampleInterval’ * ‘TimeStampSubsampleFactor’ segments	Double	Value of type ‘Double’	No
StartTime	The start time for the range of this trajectory. The date must be in ISO 8601 format: YYYY MM DD HH:mm:ss.xxx	String	A valid date in ISO 8601 format	No
Translation	This object is used to compute locations along the path. Any Translation object can be used here	Table	Translation	No
EnableFade	Toggles whether the trail should fade older points out. If this value is ‘true’, the ‘Fade’ parameter determines the speed of fading. If this value is ‘false’, the entire trail is rendered at full opacity and color	Boolean	Value of type ‘Boolean’	Yes
LineFade	The fading factor that is applied to the trail if the ‘EnableFade’ value is ‘true’. If it is ‘false’, this setting has no effect. The higher the number, the less fading is applied	Double	Value of type ‘Double’	Yes
LineWidth	This value specifies the line width of the trail if the selected rendering method includes lines. If the rendering mode is set to Points, this value is ignored	Double	Value of type ‘Double’	Yes
PointSize	This value specifies the base size of the points along the line if the selected rendering method includes points. If the rendering mode is set the Lines, this value is ignored. If a subsampling of the values is performed, the subsampled values are half this size	Integer	Value of type ‘Integer’	Yes
Rendering	Determines how the trail should be rendered to the screen. If ‘Lines’ is selected, only the line part is visible, if ‘Points’ is selected, only the corresponding points (and subpoints) are shown. ‘Lines+Points’ shows both parts	String	In list { Lines, Points, Lines+Points, Lines+Points }	Yes
ShowFullTrail	If this value is set to ‘true’, the entire trail will be rendered; if it is ‘false’, only the trail until the current time in the application will be shown	Boolean	Value of type ‘Boolean’	Yes
SweepChunkSize	The number of vertices that will be calculated each frame whenever the trail needs to be recalculated. A greater value will result in more calculations per frame.	Integer	Value of type ‘Integer’	Yes
TimeStampSubsampleFactor	The factor that is used to create subsamples along the trajectory. This value (together with ‘SampleInterval’) determines how far apart (in time) the samples are spaced along the trajectory. The time interval between ‘StartTime’ and ‘EndTime’ is split into ‘SampleInterval’ * ‘TimeStampSubsampleFactor’ segments	Integer	Value of type ‘Integer’	Yes

Inherited members from Renderable

Name	Documentation	Type	Description	Optional
DimInAtmosphere	Enables/Disables if the object should be dimmed when the camera is in the sunny part of an atmosphere	Boolean	Value of type ‘Boolean’	Yes
Enabled	This setting determines whether this object will be visible or not	Boolean	Value of type ‘Boolean’	Yes
Opacity	This value determines the opacity of this renderable. A value of 0 means completely transparent	Double	In range: ( 0,1 )	Yes
RenderBinMode	This value specifies if the renderable should be rendered in the Background,Opaque, Pre/PostDeferredTransparency, or Overlay rendering step	String	In list { Background, Opaque, PreDeferredTransparent, PostDeferredTransparent, Overlay }	Yes
Tag	A single tag or a list of tags that this renderable will respond to when setting properties	Table, or String	Value of type ‘Table’, or Value of type ‘String’	Yes
Type	This tells the type of the renderable	String	Value of type ‘String’	Yes

Asset Examples

local transforms = asset.require("./transforms")
local kernels = asset.require("./kernels")



local TrailAtPluto = {
  Identifier = "NewHorizonsTrailPluto",
  Parent = transforms.PlutoBarycenterAccurate.Identifier,
  Renderable = {
    Type = "RenderableTrailTrajectory",
    Translation = {
      Type = "SpiceTranslation",
      Target = kernels.ID.NewHorizons,
      Observer = kernels.ID.PlutoBarycenter
    },
    Color = { 1.0, 0.8, 0.4 },
    ShowFullTrail = true,
    StartTime = "2015 JUL 07 12:00:00",
    EndTime = "2015 JUL 17 12:00:00",
    PointSize = 5,
    SampleInterval = 100,
    TimeStampSubsampleFactor = 4,
    EnableFade = false,
    Rendering = "Lines+Points"
  },
  GUI = {
    Name = "New Horizons Trail Pluto",
    Path = "/Solar System/Missions/New Horizons"
  }
}


asset.onInitialize(function()
  openspace.addSceneGraphNode(TrailAtPluto)
end)

asset.onDeinitialize(function()
  openspace.removeSceneGraphNode(TrailAtPluto)
end)

asset.export(TrailAtPluto)