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c714a7f57d
Add the option to add geojson components to globes, from geojson files. One geojson file creates one GeoJsonComponent, which in turn may contain multiple GlobeGeometryFeatures
Geojson is a format that supports points, lines, and polygons. In addition to the basic functionality, extra features have been added that will long-term allow rendering the geometry needed to represent KML files (another format for geospatial geometry data). Here are links to references for both formats:
Geojson: https://geojson.org/
KML: https://developers.google.com/kml/documentation/kmlreference
data/assets/examples/geojson includes some example files that I have used for testing. Any geojson file can also be added through drag-n-drop. Note however that you might need to change the AltitudeMode or HeightOffset properties for the feature to be visible.
52 lines
2.2 KiB
Lua
52 lines
2.2 KiB
Lua
-- This script gets two parameters in its global scope:
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-- filename: The full path for the file that was dropped on the application.
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-- Example: C:/OpenSpace/openspace.cfg
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-- basename: Only the name of the actual file with extension, but without the full rest
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-- of the path.
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-- Example: openspace.cfg
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-- extension: The extention of the file
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-- Example: .cfg
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--
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-- From this script, we need to return the script that we want to be executed in response
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-- to the drag event. If we don't want anything to happen, don't return anything or
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-- return an empty string
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if filename == nil or filename == "" or
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basename == nil or basename == "" or
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extension == nil or extension == "" then
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do return "" end
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end
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-- Lua doesn't enjoy \ that are used by Windows extensively. So we convert all \ into /
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filename = filename:gsub("\\", "/")
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basename = basename:gsub("\\", "/")
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basename_without_extension = basename:sub(0, #basename - extension:len())
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is_image_file = function(extension)
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return extension == ".png" or extension == ".jpg" or extension == ".jpeg" or
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extension == ".tif" or extension == ".tga" or extension == ".bmp" or
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extension == ".psd" or extension == ".gif" or extension == ".hdr" or
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extension == ".pic" or extension == ".pnm"
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end
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local ReloadUIScript = [[ if openspace.hasProperty('Modules.CefWebGui.Reload') then openspace.setPropertyValue('Modules.CefWebGui.Reload', nil) end ]]
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if is_image_file(extension) then
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return [[
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openspace.addScreenSpaceRenderable({
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Identifier = openspace.makeIdentifier("]] .. basename_without_extension .. [["),
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Type = "ScreenSpaceImageLocal",
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TexturePath = "]] .. filename .. [["
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});]] .. ReloadUIScript
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elseif extension == ".asset" then
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return [[
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if openspace.asset.isLoaded("]] .. filename .. [[") ~= true then
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openspace.printInfo("Adding asset: ']] .. filename .. [[' (drag-and-drop)");
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end
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openspace.asset.add("]] .. filename .. '");' .. ReloadUIScript
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elseif extension == ".osrec" or extension == ".osrectxt" then
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return 'openspace.sessionRecording.startPlayback("' .. filename .. '")'
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elseif extension == ".geojson" then
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return 'openspace.globebrowsing.addGeoJsonFromFile("' .. filename .. '")' .. ReloadUIScript
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end
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