Add lte-orb scene

README.md.html

@@ -232,6 +232,14 @@ though only 24 million triangles need to be stored in memory. `view-0.pbrt`
 is the cover image of the third edition of the _Physically Based Rendering_
 book.
 
+![Rough glass around gold](images/lte-orb/lte-orb-roughglass.png height="200px")
+
+![Silver around diffuse](images/lte-orb/lte-orb-silver.png height="200px")
+
+[lte-orb](lte-orb): Spherical orb with an inset spherical object. The
+geometric structure of the shapes involved provides a useful tool for
+visualizing the appearance of various materials.
+
 ![](images/pbrt-book/book.png height="200px")
 
 [pbrt-book](pbrt-book): A realistic model of the second edition of the _Physically
@@ -565,7 +573,10 @@ pull request. There are a few options.
 * landscape: Many thanks to Jan-Walter Schliep, Burak Kahraman, and Timm
   Dapper from [Laubwerk](http://www.laubwerk.com) for this amazing scene.
 
-* pbrt-book: Thanks to Karl Li (yiningkarlli@) for this fun model.
+* lte-orb: Thanks to Yasutoshi Mori (@MirageYM) for this model; CC-BY
+  license.
+
+* pbrt-book: Thanks to Karl Li (@yiningkarlli) for this fun model.
 
 * sanmiguel: Thanks to Guillermo M. Leal Llaguno for this excellent scene.
 

lte-orb/README.md

@@ -0,0 +1,26 @@
+# Light Transport Equation Orb
+
+![Orb](https://github.com/lighttransport/lighttransportequation-orb/blob/master/lighttransport-orb.jpg?raw=true)
+
+Good model for your material design & research.
+
+## Files
+
+Model data is provided as Blender file(Blender 2.73+).
+
+* TestObj.blend : Original orb model with subdivision surface.
+* TestObjPoly.blend : Polygon tessellated version.
+
+## License
+
+<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.
+
+## Copyright
+
+Light Transport Equation Orb is modeled by https://github.com/MirageYM
+
+
+## Utilities.
+
+Do you want to use this Orb model in your renderer?
+Export the model as wavefront .obj in Blender, then tinyobjloader would be your friend https://github.com/syoyo/tinyobjloader

lte-orb/lte-orb-roughglass.pbrt

@@ -0,0 +1,42 @@
+Film "image" 
+        "integer xresolution" [ 800 ] 
+        "integer yresolution" [ 800 ] 
+        "string filename" [ "lte-orb-roughglass.exr" ] 
+
+Scale -1 1 1
+LookAt -0.300000012 0.5 -0.5
+        0 0.075 0
+        0 1 0
+Camera "perspective" 
+        "float fov" [ 37 ] 
+
+Sampler "sobol" "integer pixelsamples" 8192
+Integrator "path" "integer maxdepth" 10
+
+WorldBegin
+
+ReverseOrientation
+
+AttributeBegin
+AreaLightSource "diffuse" "color L" [9.5 9.5 9.5]
+ReverseOrientation
+Shape "trianglemesh"
+  "point P" [ -1 3.204596996 -0.9997209907 1 3.204596996 -0.9997209907 1 3.251826048 0.9997209907 -1 3.251826048 0.9997209907  ]
+  "integer indices" [ 0 1 2 0 2 3  ]
+AttributeEnd
+
+# Material in the inner part of the sphere
+MakeNamedMaterial "InnerMat" 
+        "spectrum eta" "spds/Au.eta.spd"
+        "spectrum k" "spds/Au.k.spd"
+        "float roughness" [0.01]
+        "string type" ["metal"]
+
+# Matierial on the outer part of the sphere
+MakeNamedMaterial "OuterMat" 
+         "string type" "fourier"
+         "string bsdffile" "bsdfs/roughglass_alpha_0.2.bsdf"
+
+Include "geometry.pbrt"
+
+WorldEnd

lte-orb/lte-orb-silver.pbrt

@@ -0,0 +1,43 @@
+Film "image" 
+        "integer xresolution" [ 800 ] 
+        "integer yresolution" [ 800 ] 
+        "string filename" [ "lte-orb-silver.exr" ] 
+
+Scale -1 1 1
+LookAt -0.300000012 0.5 -0.5
+        0 0.075 0
+        0 1 0
+Camera "perspective" 
+        "float fov" [ 37 ] 
+
+Sampler "sobol" "integer pixelsamples" 4096
+Integrator "path" "integer maxdepth" 8
+
+WorldBegin
+
+ReverseOrientation
+
+AttributeBegin
+AreaLightSource "diffuse" "color L" [9.5 9.5 9.5]
+ReverseOrientation
+Shape "trianglemesh"
+  "point P" [ -1 3.204596996 -0.9997209907 1 3.204596996 -0.9997209907 1 3.251826048 0.9997209907 -1 3.251826048 0.9997209907  ]
+  "integer indices" [ 0 1 2 0 2 3  ]
+AttributeEnd
+
+# Material in the inner part of the sphere
+MakeNamedMaterial "InnerMat" 
+        "rgb Kd" [ .4 .4 .7 ]
+        "float sigma" [20]
+        "string type" ["matte"]
+
+# Matierial on the outer part of the sphere
+MakeNamedMaterial "OuterMat" 
+        "string type" [ "metal" ]
+        "spectrum eta" "spds/Ag.eta.spd"
+        "spectrum k" "spds/Ag.k.spd"
+        "float roughness" .0025
+
+Include "geometry.pbrt"
+
+WorldEnd

lte-orb/spds/Ag.eta.spd

@@ -0,0 +1,56 @@
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lte-orb/spds/Ag.k.spd

@@ -0,0 +1,56 @@
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lte-orb/spds/Au.eta.spd

@@ -0,0 +1,56 @@
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lte-orb/spds/Au.k.spd

@@ -0,0 +1,56 @@
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