Convert Horizons trail trajecteries that are orbits into orbit trails

data/assets/scene/solarsystem/missions/gaia/trail.asset

@@ -12,7 +12,7 @@ local GaiaTrail = {
   Identifier = "GaiaTrail",
   Parent = earthTransforms.EarthCenter.Identifier,
   Renderable = {
-    Type = "RenderableTrailTrajectory",
+    Type = "RenderableTrailOrbit",
     Translation = {
       Type = "HorizonsTranslation",
       HorizonsTextFile = {
@@ -26,14 +26,9 @@ local GaiaTrail = {
       }
     },
     Color = { 0.0, 0.8, 0.7 },
-    ShowFullTrail = false,
-    StartTime = "2013 DEC 19 09:55:27",
-    EndTime = "2026 SEP 14 21:15:27",
     PointSize = 5,
-    SampleInterval = 2400, -- 40 minutes in seconds
-    TimeStampSubsampleFactor = 1,
-    EnableFade = true,
-    Rendering = "Lines"
+    Period = 365, -- 1 year orbit time
+    Resolution = 24244 -- Sameple rate of 40 minutes
   },
   GUI = {
     Name = "Gaia Trail",
@@ -45,7 +40,7 @@ local GaiaTrailEclip = {
   Identifier = "GaiaTrail_Eclip",
   Parent = sunTransforms.SunCenter.Identifier,
   Renderable = {
-    Type = "RenderableTrailTrajectory",
+    Type = "RenderableTrailOrbit",
     Enabled = false,
     Translation = {
       Type = "HorizonsTranslation",
@@ -57,14 +52,9 @@ local GaiaTrailEclip = {
       -- Step size: 1 day
     },
     Color = { 1.0, 0.0, 0.0 },
-    ShowFullTrail = false,
-    StartTime = "2013 DEC 20 00:00:00",
-    EndTime = "2026 SEP 14 00:00:00",
     PointSize = 5,
-    SampleInterval = 86400,
-    TimeStampSubsampleFactor = 1,
-    EnableFade = true,
-    Rendering = "Lines"
+    Period = 365, -- 1 year orbit time
+    Resolution = 365 -- Sameple rate of 1 day
   },
   GUI = {
     Name = "Gaia Ecliptic Trail",

data/assets/scene/solarsystem/sssb/astraea.asset

@@ -1,6 +1,6 @@
 local sunTransforms = asset.require("scene/solarsystem/sun/transforms")
 
-local trajectory = asset.syncedResource({
+local horizons = asset.syncedResource({
   Name = "5 Astraea Trajectory",
   Type = "HttpSynchronization",
   Identifier = "astraea_horizons",
@@ -11,10 +11,10 @@ local AstraeaTrail = {
   Identifier = "AstraeaTrail",
   Parent = sunTransforms.SolarSystemBarycenter.Identifier,
   Renderable = {
-    Type = "RenderableTrailTrajectory",
+    Type = "RenderableTrailOrbit",
     Translation = {
       Type = "HorizonsTranslation",
-      HorizonsTextFile = trajectory .. "horizons_astraea.hrz"
+      HorizonsTextFile = horizons .. "horizons_astraea.hrz"
       -- Target: 5 Astraea (A845 XA)
       -- Observer: SSB
       -- Start time: 2014-Jan-01 00:00 (first data point)
@@ -22,10 +22,8 @@ local AstraeaTrail = {
       -- Step size: 1 day
     },
     Color = { 0.9, 0.9, 0.0 },
-    StartTime = "2014 JAN 01 00:00:00",
-    EndTime = "2050 JAN 01 00:00:00",
-    SampleInterval = 86400,
-    TimeStampSubsampleFactor = 1
+    Period = 1507, -- Orbit time 1507 days
+    Resolution = 1507 -- Step size of 1 day
   },
   GUI = {
     Name = "5 Astraea Trail",
@@ -39,7 +37,7 @@ local AstraeaPosition = {
   Transform = {
     Translation = {
       Type = "HorizonsTranslation",
-      HorizonsTextFile = trajectory .. "horizons_astraea.hrz"
+      HorizonsTextFile = horizons .. "horizons_astraea.hrz"
     }
   },
   GUI = {

data/assets/scene/solarsystem/sssb/swifttuttle.asset

@@ -11,7 +11,7 @@ local SwiftTuttleTrail = {
   Identifier = "SwiftTuttleTrail",
   Parent = sunTransforms.SolarSystemBarycenter.Identifier,
   Renderable = {
-    Type = "RenderableTrailTrajectory",
+    Type = "RenderableTrailOrbit",
     Translation = {
       Type = "HorizonsTranslation",
       HorizonsTextFile = sync .. "horizons_swifttuttle.hrz"
@@ -22,9 +22,8 @@ local SwiftTuttleTrail = {
       -- Step size: 1 day
     },
     Color = { 0.9, 0.9, 0.0 },
-    StartTime = "1879 JUN 27 00:00:00",
-    EndTime = "2050 JAN 01 00:00:00",
-    SampleInterval = 86400
+    Period = 48577.2124, -- Orbit time 133 years
+    Resolution = 48577 -- Step size: 1 day
   },
   GUI = {
     Name = "Swift Tuttle Trail",

data/assets/scene/solarsystem/sssb/tesla_roadster.asset

@@ -11,7 +11,7 @@ local TeslaRoadsterTrail = {
   Identifier = "TeslaRoadsterTrail",
   Parent = sunTransforms.SolarSystemBarycenter.Identifier,
   Renderable = {
-    Type = "RenderableTrailTrajectory",
+    Type = "RenderableTrailOrbit",
     Translation = {
       Type = "HorizonsTranslation",
       HorizonsTextFile = orbit .. "horizons_tesla.hrz"
@@ -22,10 +22,8 @@ local TeslaRoadsterTrail = {
       -- Step size: 1 day
     },
     Color = { 0.9, 0.9, 0.0 },
-    StartTime = "2018 FEB 7 03:00:00",
-    EndTime = "2089 DEC 31 03:00:00",
-    SampleInterval = 86400,
-    TimeStampSubsampleFactor = 1
+    Period = 557, -- Orbit time 557 days
+    Resolution = 557 -- Step size 1 day
   },
   GUI = {
     Name = "Tesla Roadster Trail",