mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-05-03 17:30:04 -05:00
Emma Broman
97 lines
3.3 KiB
Lua
97 lines
3.3 KiB
Lua
local colormaps = asset.require("util/default_colormaps")
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local Points = {
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Identifier = "Example_InterpolatedPoints_ColorMapped",
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Renderable = {
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Type = "RenderableInterpolatedPoints",
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-- The dataset here is just a linearly expanding dataset, where the points move in
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-- a straight line
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File = asset.resource("data/interpolation_expand.csv"),
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-- Specify how many objects the rows in the dataset represent. Here, the dataset is
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-- consists of 10 objects with positions at 6 different time steps. This information
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-- is required
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NumberOfObjects = 10,
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-- Both the position and data values will be interpolated, so use a color map
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Coloring = {
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ColorMapping = {
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File = colormaps.Uniform.Viridis
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}
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},
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-- Reduce the scale of the points a bit compared to default, so we see them more clearly
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SizeSettings = {
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ScaleExponent = 3.5
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}
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},
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GUI = {
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Name = "Interpolating Points with Color Map",
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Path = "/Example/Interpolated Point Clouds",
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Description = [[Example of interpolating points with a color map. The data value
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used for the coloring will also be inteprolated, leading to the points changing
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color throughout the interpolation.]]
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}
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}
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local Points_Smoothed = {
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Identifier = "Example_InterpolatedPoints_Spline",
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Renderable = {
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Type = "RenderableInterpolatedPoints",
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-- Using a random walk dataset, to get movement in some different directions
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File = asset.resource("data/interpolation_randomwalk.csv"),
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-- Same number of objects as above - 10 objects with positions at 6 different
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-- time steps
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NumberOfObjects = 10,
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Interpolation = {
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-- Smoothen transitions between two different sets of points, by
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-- using a spline based interpolation of the points
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UseSplineInterpolation = true
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},
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-- Just use a fixed coloring here, no color mapping
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Coloring = {
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FixedColor = { 0.0, 0.5, 0.0 }
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},
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-- Reduce the scale of the points a bit compared to default, so we see them more clearly
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SizeSettings = {
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ScaleExponent = 3.0
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}
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},
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GUI = {
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Name = "Interpolating Points (Spline)",
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Path = "/Example/Interpolated Point Clouds",
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Description = [[Example of interpolating points with spline-based interpolation
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for the position. This leads to smoother transitions at the nodes of the
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interpolation. Try disabling the spline interpolation in the GUI (under
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Renderable->Interpolation) to see the difference.]]
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}
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}
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asset.onInitialize(function()
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openspace.addSceneGraphNode(Points)
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openspace.addSceneGraphNode(Points_Smoothed)
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end)
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asset.onDeinitialize(function()
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openspace.removeSceneGraphNode(Points_Smoothed)
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openspace.removeSceneGraphNode(Points)
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end)
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asset.export(Points)
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asset.export(Points_Smoothed)
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asset.meta = {
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Name = "Example - Interpolated Point Clouds",
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Version = "1.0",
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Description = [[Example of point clouds that support interpolation. One uses a linear
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motion and color mapping. The other example uses a spline interpolation for the
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approximation of the positions, to result in smoother transitions between the sets
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of positions. The interpolation can be triggered using the properties under
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Renderable->Interpolation in the Scene menu.]],
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Author = "OpenSpace Team",
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URL = "http://openspaceproject.com",
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License = "MIT license"
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}
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