mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-05-08 04:20:14 -05:00
Emma Broman
54cf26755c
* Try using angular max size rather than max pixel size * Update property name and use for shader * Add docs and remove mention of angle from user's perspective * People will wonder, so add some details as to what the value represents * Fix inconsistent punctuation in property texts with multiple sentences * Slight clarification of transformation matrix usage * Add values to asset files * Increase max size of example points a bit * Remove/Update comment * Add TODO comment about potential optimization * Reduce max size of SDSS and quasars a bit * Address review comment * Decrease 6df and increase globular clusters size as per review comment * Remove any mention of pixel size in the example asset * Remove some more mentions of pixel size * Write view space position to G-buffer to prevent atm. from shining through points
80 lines
2.4 KiB
Lua
80 lines
2.4 KiB
Lua
local textures = asset.resource({
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Name = "Open Clusters Textures",
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Type = "HttpSynchronization",
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Identifier = "digitaluniverse_openclusters_textures",
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Version = 1
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})
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local speck = asset.resource({
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Name = "Open Clusters Speck Files",
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Type = "HttpSynchronization",
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Identifier = "digitaluniverse_openclusters_speck",
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Version = 3
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})
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local Object = {
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Identifier = "OpenStarClusters",
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Renderable = {
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Type = "RenderablePolygonCloud",
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Enabled = false,
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Labels = {
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File = speck .. "oc.label",
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Color = { 0.05, 0.4, 0.2 },
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Size = 15.5,
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MinMaxSize = { 4, 30 },
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Unit = "pc"
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},
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Coloring = {
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FixedColor = { 0.1, 0.8, 0.4 }
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},
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Opacity = 0.5,
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File = speck .. "oc.speck",
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Unit = "pc",
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PolygonSides = 12,
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SizeSettings = {
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ScaleExponent = 17.6,
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MaxSize = 23.0,
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EnableMaxSizeControl = true
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}
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},
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GUI = {
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Name = "Open Star Clusters",
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Path = "/Milky Way",
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Description = [[Census: 1,867 clusters. DU Version 7.8. <br> An open star cluster is a
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loose assemblage of stars numbering from hundreds to thousands that are bound by
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their mutual gravitation. Astronomers know from their stellar spectra that stars in
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open clusters are typically young. (With a star's spectrum, we can determine the
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spectral type and the luminosity class, revealing the star's age.) Because these are
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young stars, we expect to see them in the star-forming regions of our Galaxy, namely
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in the spiral arms. For this reason, open clusters exist, for the most part, in the
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plane of the Galaxy, where we view the arms edge-on as that band of light in the
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night sky. Because of this, open clusters were originally known as Galactic
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clusters, but this term fell out of favor once astronomers began to understand that
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the Galaxy includes objects beyond the Milky Way's disk. <br><br> Data Reference:
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Galactic spiral structure revealed by Gaia EDR3 (Poggio+, 2021)]]
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}
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}
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asset.onInitialize(function()
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openspace.addSceneGraphNode(Object)
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end)
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asset.onDeinitialize(function()
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openspace.removeSceneGraphNode(Object)
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end)
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asset.export(Object)
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asset.meta = {
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Name = "Open Star Clusters",
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Version = "3.0",
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Description = "Digital Universe asset for Open Star Clusters",
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Author = "Brian Abbott (AMNH)",
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URL = "https://www.amnh.org/research/hayden-planetarium/digital-universe",
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License = "AMNH Digital Universe"
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}
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