Periodic boundary conditions seems to be working (currently only Simpson

integration is supported). Refactored it into Heterogenous medium
plugin. Notebook of 1D cloud now works with orthographic projection
instead of radiance.

include/mitsuba/render/shape.h

@@ -180,14 +180,7 @@ class MTS_EXPORT_RENDER Shape : public ConfigurableObject {
 	// =============================================================
 	//! @{ \name Query functions to be implemented in subclasses
 	// =============================================================
-
-
-	// Return X periodic boundary condition (True/False)
-	virtual bool xPeriodic() const;
-
-	// Return Y periodic boundary condition (True/False)
-	virtual bool yPeriodic() const;
-
+
 	/// Return the name of this shape (e.g. the filename)
 	virtual std::string getName() const;
 

notebooks/.ipynb_checkpoints/.gitignore

@@ -0,0 +1 @@
+/test_i3rc-checkpoint.ipynb

notebooks/i3rc/scenes.py

@@ -52,14 +52,16 @@
 
     # Create a sensor, film & sample generator
     scene.addChild(pmgr.create({
-        'type' : 'radiancemeter',
+        'type' : 'orthographic',
+        'toWorld' : Transform.translate(Vector(0.25,0.25,1)) * Transform.scale(Vector(0.25,0.25,-1)) * Transform.rotate(Vector(0,0,1), 180.0),
         'film' : {
             'type' : 'mfilm',
-            'fileFormat' : 'numpy'
-            },
+            'fileFormat' : 'numpy',
+            'width' : 32
+         },
         'sampler' : {
             'type' : 'ldsampler',
-            'sampleCount' : 100
+            'sampleCount' : 100000
         }
     }))
 
@@ -72,6 +74,8 @@
     scene.addChild(pmgr.create({
         'type' : 'heterogeneous',
         'method' : 'simpson',
+        'xBoundary' : 'periodic',
+        'yBoundary' : 'periodic',
         'density' : voldata['case1'].getMitsubaParams(),
         'albedo' : {
             'type' : 'constvolume',
@@ -87,8 +91,6 @@
     # Create medium bounding box
     scene.addChild(pmgr.create({
         'type' : 'cube',
-        'xPeriodic' : True,
-        'yPeriodic' : True, 
         'toWorld' : voldata['case1'].getWorldTransform(), 
         'interior' : scene.getMedia()[0]
     }))