RenderableTravelSpeed

Inherits Renderable

Members

Name	Documentation	Type	Description	Optional
Target	This value sets which scene graph node to target with the light speed indicator	String	Value of type ‘String’	No
Color	This value determines the RGB color for the line	Vector3<double>	Value of type ‘Vector3’	Yes
FadeLength	This value specifies the length of the faded tail of the light indicator set in light seconds	Double	Value of type ‘Double’	Yes
IndicatorLength	This value specifies the length of the light indicator set in light seconds	Double	Value of type ‘Double’	Yes
LineWidth	This value specifies the line width	Double	Value of type ‘Double’	Yes
TravelSpeed	The speed of light is the default value	Double	Value of type ‘Double’	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 sunTransforms = asset.require("scene/solarsystem/sun/transforms")
local earthTransforms = asset.require("scene/solarsystem/planets/earth/transforms")
local coreKernels = asset.require("spice/core")



local TravelSpeedIndicator = {
  Identifier = "TravelSpeedIndicator-2000",
  --SunIAU adds an extra rotation. Using barycenter, then offsetting to SunIAU
  Parent = sunTransforms.SolarSystemBarycenter.Identifier,
  -- TODO Elon: 21 April 2022. Interaction sphere should not depend on the transform scale.
  -- InteractionSphere = sunAsset.Sun.Renderable.Radii[1] * 1.05,
  InteractionSphere = 695700000.0,
  Transform = {
    Translation = {
      Type = "SpiceTranslation",
      Target = coreKernels.ID.Sun,
      Observer = coreKernels.ID.SolarSystemBarycenter
    }
  },
  Renderable = {
    Type = "RenderableTravelSpeed",
    Target = earthTransforms.EarthCenter.Identifier,
    LineWidth = 4,
    IndicatorLength = 10,
    FadeLength = 10
  },
   GUI = {
    Path = "/Solar System/Heliosphere",
    Name = "Speed indicator",
    Description = "Speed of light indicator from sun to earth"
  }
}


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

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

asset.export(TravelSpeedIndicator)



asset.meta = {
  Name = "Light travel from sun to earth",
  Version = "1.0",
  Description = "Speed of light indicator from sun to earth",
  Author = "CCMC, Christian Adamsson, Emilie Ho",
  URL = "",
  License = "MIT"
}