Merge pull request #1297 from OpenSpace/feature/orion_nebula

Feature/orion nebula

data/assets/scene/milkyway/objects/orionnebula/cluster.asset

@@ -0,0 +1,51 @@
+--orionnebula/cluster.asset
+local assetHelper = asset.require('util/asset_helper')
+local transforms = asset.require("./transforms")
+
+local sync = asset.syncedResource({
+    Name = "Orion Nebula Star Cluster",
+    Type = "HttpSynchronization",
+    Identifier = "orion_nebula_star_cluster",
+    Version = 1
+})
+
+local OrionClusterStars = {
+    Identifier = "OrionClusterStars",
+    Parent = transforms.NebulaPosition.Identifier,
+    Renderable = {
+        Type = "RenderableStars",
+        File = sync .. "/oricluster.speck",
+        Texture = sync .. "/halo.png",
+        Texture = sync .. "/colorbv.cmap",
+        MagnitudeExponent = 5.02,
+        SizeComposition = "Distance Modulus",
+        RenderMethod = "Texture Based"
+    },
+    GUI = {
+        Name = "Orion Nebula Star Cluster",
+        Path = "/Milky Way/Stars"
+    }
+}
+
+assetHelper.registerSceneGraphNodesAndExport(asset, { OrionClusterStars })
+
+asset.meta = {
+    Name = "Orion Nebula Star Cluster",
+    Version = "1.0",
+    Description = [[ In order to have an accurate depiction of the Orion nebula, we need 
+to include the star cluster that was birthed from it. We turned to a study of the 
+cluster's stellar population by Lynne Hillenbrand, who was working at the University of 
+California, Berkeley at the time. The catalog from her paper contains more than 1500 
+stars, about half the stars in the actual cluster. The cluster is very crowded, with a 
+peak density of 10000 stars per cubic parsec over a wide range of masses from a tenth the 
+sun's mass up to 50 times its mass. We were presented with one problem: there are no 
+distances. For the stellar distances, we needed to deduce them by statistical methods. 
+Knowing the size of the cluster and approximating the shape to be roughly spherical, we 
+placed each star along a line of sight through this imaginary sphere centered on the 
+cluster. In this sense, these data are observed data and the view from Earth is accurate. 
+But the distance of each star has been derived from this educated-guess approach for the 
+cluster distribution. ]],
+    Author = "AMNH Digital Universe",
+    URL = "https://www.amnh.org/research/hayden-planetarium/digital-universe",
+    License = "custom"
+}

data/assets/scene/milkyway/objects/orionnebula/nebula.asset

@@ -0,0 +1,157 @@
+local assetHelper = asset.require('util/asset_helper')
+local sunTransforms = asset.require('scene/solarsystem/sun/transforms')
+local transforms = asset.require('./transforms')
+
+local center = sunTransforms.SolarSystemBarycenter.Identifier;
+local LIGHTS = assetHelper.getDefaultLightSources(center);
+
+local sync = asset.syncedResource({
+    Name = "Orion Nebula Model",
+    Type = "HttpSynchronization",
+    Identifier = "orion_nebula_model",
+    Version = 1
+})
+
+local NebulaHolder = {
+    Identifier = "OrionNebulaHolder",
+    Parent = transforms.NebulaPosition.Identifier,
+    Transform = {
+        Scale = {
+            Type = "StaticScale",
+            Scale = 35999998699110400.000000
+        },
+        Rotation = {
+            Type = "FixedRotation",
+            Attached = "OrionNebulaHolder",
+            XAxis = {1.000000,1.000000,0.510000},
+            XAxisOrthogonal = true,
+            YAxis = "Sun",
+            YAxisInverted = false
+        }
+    },
+    GUI = {
+        Name = "Orion Nebula",
+        Path = "/Milky Way/Objects",
+    }
+}
+
+local OrionNebulaModel = {
+    Identifier = "OrionNebulaModel",
+    Parent = NebulaHolder.Identifier,
+    Transform = {
+        Scale = {
+            Type = "StaticScale",
+            Scale = 0.67500000
+        }
+    },
+    Renderable = {
+        Type = "RenderableModel",
+        Geometry = {{
+            Type = "MultiModelGeometry",
+            GeometryFile = sync .. "/orion_nebula.obj",
+            ColorTexture = sync .. "/heic0601a_masked.png"
+        }},
+        Opacity = 1.0,
+        DisableFaceCulling = false,
+        SpecularIntensity = 0.0,
+        AmbientIntensity = 0.45,
+        DiffuseIntensity = 0.0,
+        RotationVector = { 0.000000, 22.300000, 0.000000 },
+        LightSources = LIGHTS;
+    },
+    GUI = {
+        Name = "Orion Nebula Model",
+        Path = "/Milky Way/Objects",
+        Hidden = true
+    }
+}
+
+local OrionNebulaShocksModel = {
+    Identifier = "OrionNebulaShocksModel",
+    Parent = NebulaHolder.Identifier,
+    Transform = {
+        Scale = {
+            Type = "StaticScale",
+            Scale = 0.67500000
+        }
+    },
+    Renderable = {
+        Type = "RenderableModel",
+        Geometry = {{
+            Type = "MultiModelGeometry",
+            GeometryFile = sync .. "/orishocks.obj",
+            ColorTexture = "${DATA}/colors/pink.png"
+        }},
+        Opacity = 1.0, 
+        DisableFaceCulling = false,
+        SpecularIntensity = 0.0,
+        AmbientIntensity = 0.19,
+        DiffuseIntensity = 0.4,
+        RotationVector = { 0.000000, 22.300000, 0.000000 },
+        LightSources = LIGHTS;
+    },
+    GUI = {
+        Name = "Orion Nebula Shocks",
+        Path = "/Milky Way/Objects",
+        Hidden = false
+    }
+}
+
+local OrionNebulaProplydsModel = {
+    Identifier = "OrionNebulaProplydsModel",
+    Parent = NebulaHolder.Identifier,
+    Transform = {
+        Scale = {
+            Type = "StaticScale",
+            Scale = 0.67500000
+        }
+    },
+    Renderable = {
+        Type = "RenderableModel",
+        Geometry = {{
+            Type = "MultiModelGeometry",
+            GeometryFile = sync .. "/proplyds.obj",
+            ColorTexture = "${DATA}/colors/pink.png"
+        }},
+        Opacity = 1.0, 
+        DisableFaceCulling = false,
+        SpecularIntensity = 0.0,
+        AmbientIntensity = 1.0,
+        DiffuseIntensity = 1.0,
+        RotationVector = { 0.000000, 22.300000, 0.000000 },
+        LightSources = LIGHTS;
+    },
+    GUI = {
+        Name = "Orion Nebula Proplyds",
+        Path = "/Milky Way/Objects",
+        Hidden = false
+    }
+}
+
+assetHelper.registerSceneGraphNodesAndExport(asset, {
+    NebulaHolder,
+    OrionNebulaModel,
+    OrionNebulaShocksModel,
+    OrionNebulaProplydsModel
+})
+
+asset.meta = {
+    Name = "Orion Nebula Model",
+    Version = "1.0",
+    Description = [[ In the Digital Universe model of the Orion Nebula, we depict the 
+ionization front effectively as a terrain, with a flat Hubble image of the nebula mapped 
+on the undulating surface. In reality, the ionization front has a slight thickness to
+it - about a third of a light year - but is quite thin compared to the overall size of 
+the nebula, which stretches about ten light years from side to side.<br><br>Close into 
+the center, we see small teardrop-shaped structures with their narrow ends pointing away 
+from the bright star: these are protoplanetary disks, or proplyds, of dense gas and dust 
+surrounding young stars. The larger formations that one sees farther away from the center 
+of the nebula take on a cup-like shape, with the narrow end pointing away from the 
+nebulas center. These enormous structures are bow shocks that delineate the region where 
+highspeed winds from the central star slow from supersonic to subsonic speeds. You can 
+think of an HII region as a sort of tremendous explosion, taking place over millennia, 
+and the bow shocks are part of the outward rush of material. ]],
+    Author = "AMNH Digital Universe",
+    URL = "https://www.amnh.org/research/hayden-planetarium/digital-universe",
+    License = "custom"
+}

data/assets/scene/milkyway/objects/orionnebula/orionnebula.asset

@@ -0,0 +1,2 @@
+asset.require('./cluster')
+asset.require('./nebula')

data/assets/scene/milkyway/objects/orionnebula/transforms.asset

@@ -0,0 +1,26 @@
+local assetHelper = asset.require('util/asset_helper')
+local sunTransforms = asset.require('scene/solarsystem/sun/transforms')
+
+local PARSEC_CONSTANT = 3.0856776E16;
+
+local NebulaPosition = {
+    Identifier = "NebulaPosition",
+    Parent = sunTransforms.SolarSystemBarycenter.Identifier,
+    Transform = {
+        Translation = {
+            Type = "StaticTranslation",
+            Position = {
+                -329.915 * PARSEC_CONSTANT,
+                -183.153 * PARSEC_CONSTANT,
+                -132.706 * PARSEC_CONSTANT
+            }
+        },
+    },
+    GUI = {
+        Name = "Orion Nebula Position",
+        Path = "/Milky Way/Objects",
+        Hidden = true
+    }
+}
+
+assetHelper.registerSceneGraphNodesAndExport(asset, { NebulaPosition })

data/web/documentation/scenelicense.hbs

@@ -4,7 +4,7 @@
     <div class="col-lg-12">
       <p>
         <h3>Asset - {{name}}</h3>
-        <p>{{description}}</p>
+        <p>{{{description}}}</p>
         <p>Version - {{version}}</p>
         <p>Author - {{author}}</p>
         <p>Associated URL - <a href="{{url}}">{{url}}</a></p>

data/web/documentation/script.js

@@ -127,6 +127,15 @@ window.onload = function () {
       }
     }
 
+    if (documentation[i].identifier == "sceneLicense") {
+      for (var j = 0; j < documentation[i].data.length; j++) {
+        var escaped = documentation[i].data[j].description.replace(
+          /\\n/g, ""
+        );
+        documentation[i].data[j].description = escaped;
+      }
+    }
+
   }
 
   currentDocumentation = documentation[3];