-- This asset requires OpenSpace to be built with the OPENSPACE_MODULE_VOLUME enabled

-- Before using this example,
-- the volume data itself needs to be generated,
-- using the task 'data/tasks/volume/generate_spherical.task'

local assetHelper = asset.require('util/asset_helper')
local transforms = asset.require("scene/solarsystem/sun/transforms")

local astronomicalUnit = 149597870700

local volume = {
    Identifier = "GeneratedVolume",
    Parent = transforms.SolarSystemBarycenter.Identifier,
    Renderable = {
        Type = "RenderableTimeVaryingVolume",
        SourceDirectory = asset.localResource("spherical"),
        TransferFunction = asset.localResource("../transferfunction.txt"),
        StepSize = 0.01,
        MinValue = 0,
        MaxValue = 1,
        GridType = "Spherical",
        SecondsBefore = 50*365*24*60*60, -- 50 years before
        SecondsAfter = 50*365*24*60*60 -- 50 years after
    },
    GUI = {
        Path = "/Examples"
    },
    Transform = {
        Scale = {
            Type = "StaticScale",
            Scale = astronomicalUnit
        }
    }
}

local objects = { volume }
assetHelper.registerSceneGraphNodes(asset, objects)