OpenSpace/data/assets/examples/globerotation.asset

local sun = asset.require("scene/solarsystem/sun/transforms")
local earth = asset.require("scene/solarsystem/planets/earth/earth")



local models = asset.resource({
  Name = "New Horizons Model",
  Type = "HttpSynchronization",
  Identifier = "newhorizons_model",
  Version = 2
})


local ExampleGlobeRotation = {
  Identifier = "ExampleGlobeRotation",
  Parent = earth.Earth.Identifier,
  Transform = {
    Translation = {
      Type = "GlobeTranslation",
      Globe = earth.Earth.Identifier,
      Latitude = 40.7306,
      Longitude = -73.9352,
      Altitude = 6,
      UseHeightmap = true
    },
    Rotation = {
      Type = "GlobeRotation",
      Globe = earth.Earth.Identifier,
      Latitude = 40.7306,
      Longitude = -73.9352
      -- Can be used to to put flat on leaning surfaces, but also leads to updating
      -- the rotation every frame
      --UseHeightmap = true
    }
  },
  Renderable = {
    Type = "RenderableModel",
    GeometryFile = models .. "NewHorizonsCleanModel.obj",
    LightSources = {
      sun.LightSource
    }
  },
  GUI = {
    Name = "GlobeRotation",
    Path = "/Examples"
  }
}


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

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

asset.export(ExampleGlobeRotation)



asset.meta = {
  Name = "GlobeRotation Example",
  Description = [[An example that demonstrates how to load a 3D model from a geometry
    file, placing it on a planetary surface and rotate it to align with the surface
    normal using a "GlobeRotation" transform. Note that "GlobeTranslation" is needed to
    put the model in the correct location.]],
  Author = "OpenSpace Team",
  URL = "http://openspaceproject.com",
  License = "MIT license"
}