TileProviderByLevel

Inherits TileProvider

Members

Name	Documentation	Type	Description	Optional
LevelTileProviders		Table	Table parameters	No

Table parameters for LevelTileProviders

• Optional: No

Name	Documentation	Type	Description	Optional
*		Table	Table parameters	Yes

Table parameters for *

• Optional: Yes

Name	Documentation	Type	Description	Optional
MaxLevel		Integer	Greater or equal to: 0	No
TileProvider		Table		No

Asset Examples

Basic

This example file adds two layers to a globe. The first layer being used is showing a cloud layer and at higher levels a Blue Marble image is used instead. Recommended reading for this example is the documentation on the DefaultTileProvider.

-- Download some example images that we can use
local images = asset.resource({
  Name = "Earth Textures",
  Type = "HttpSynchronization",
  Identifier = "earth_textures",
  Version = 3
})

-- Define the TileProvider
local TileProvider = {
  Identifier = "Example",
  Type = "TileProviderByLevel",
  Enabled = true,
  LevelTileProviders = {
    {
      -- Show only a cloud layer for the first 3 layers (2, 3, 4)
      MaxLevel = 4,
      TileProvider = {
        Identifier = "Blue_Marble_Clouds",
        FilePath = images .. "earth_clouds.jpg"
      }
    },
    {
      -- Then transition fade into the Blue Marble image representation
      MaxLevel = 22,
      TileProvider = {
        Identifier = "Blue_Marble",
        FilePath = images .. "earth_bluemarble.jpg"
      }
    }
  }
}

-- Define the scene graph node
local Node = {
  Identifier = "TileProviderByLevel_Example",
  Renderable = {
    Type = "RenderableGlobe",
    Layers = {
      -- The globe has exactly one layer, which is the one we defined above
      ColorLayers = { TileProvider }
    }
  },
  GUI = {
    Name = "TileProviderByLevel - Basic",
    Path = "/Examples"
  }
}

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

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