new example rtbMakeInteriorMitsubaFactoids

BatchRenderer/Renderers/Mitsuba/rtbRenderMitsubaFactoids.m

@@ -43,6 +43,11 @@ if isempty(mitsuba)
     end
 end
 
+% look carefully for the input file
+workingFolder = rtbWorkingFolder('hints', hints);
+fileInfo = rtbResolveFilePath(sceneFile, workingFolder);
+sceneFile = fileInfo.absolutePath;
+
 
 %% Render the factoid scene.renderer = RtbMitsubaRenderer(hints);
 renderer = RtbMitsubaRenderer(hints);
@@ -68,9 +73,21 @@ for ii = 1:numel(sliceInfo)
         factoids.(factoidName).channels = {};
     end
     
+    % sort channels, which may arrive out of order
+    switch channelName
+        case 'R'
+            dataIndex = 1;
+        case 'G'
+            dataIndex = 2;
+        case 'B'
+            dataIndex = 3;
+        otherwise
+            dataIndex = numel(factoids.(factoidName).channels) + 1;
+    end
+    
     % insert data and channel name into output for this factoid
     slice = data(:,:,ii);
-    factoids.(factoidName).data(:,:,end+1) = slice;
-    factoids.(factoidName).channels{end+1} = channelName;
+    factoids.(factoidName).data(:, :, dataIndex) = slice;
+    factoids.(factoidName).channels{dataIndex} = channelName;
 end
 

BatchRenderer/Renderers/Mitsuba/rtbWriteMitsubaFactoidScene.m

@@ -46,12 +46,19 @@ parser.addParameter('factoids', ...
     @iscellstr);
 parser.addParameter('factoidFormat', 'rgb', @ischar);
 parser.addParameter('singleSampling', true, @islogical);
+parser.addParameter('hints', rtbDefaultHints(), @isstruct);
 parser.parse(originalFile, varargin{:});
 originalFile = parser.Results.originalFile;
 factoidFile = parser.Results.factoidFile;
 factoids = parser.Results.factoids;
 factoidFormat = parser.Results.factoidFormat;
 singleSampling = parser.Results.singleSampling;
+hints = rtbDefaultHints(parser.Results.hints);
+
+% look carefully for the input file
+workingFolder = rtbWorkingFolder('hints', hints);
+fileInfo = rtbResolveFilePath(originalFile, workingFolder);
+originalFile = fileInfo.absolutePath;
 
 % default output like the input
 if isempty(factoidFile)

ExampleScenes/Interior/rtbMakeInteriorMitsubaFactoids.m

+%%% RenderToolbox4 Copyright (c) 2012-2017 The RenderToolbox Team.
+%%% About Us://github.com/RenderToolbox/RenderToolbox4/wiki/About-Us
+%%% RenderToolbox4 is released under the MIT License.  See LICENSE file.
+%
+%% Render the Interior scene with various lighting.
+
+%% Choose example files, make sure they're on the Matlab path.
+parentSceneFile = 'interio.dae';
+conditionsFile = 'InteriorConditions.txt';
+mappingsFile = 'InteriorMappings.json';
+
+%% Choose batch renderer options.
+hints.whichConditions = 1;
+hints.fov = 49.13434 * pi() / 180;
+hints.recipeName = 'rtbMakeInteriorFactoids';
+
+%% Write some spectra to use.
+resources = rtbWorkingFolder('folderName', 'resources', 'hints', hints);
+cieInfo = load('B_cieday');
+
+% make orange-yellow for a few lights
+temp = 4000;
+scale = 3;
+spd = scale * GenerateCIEDay(temp, cieInfo.B_cieday);
+wls = SToWls(cieInfo.S_cieday);
+rtbWriteSpectrumFile(wls, spd, fullfile(resources, 'YellowLight.spd'));
+
+% make strong yellow for the hanging spot light
+temp = 5000;
+scale = 30;
+spd = scale * GenerateCIEDay(temp, cieInfo.B_cieday);
+wls = SToWls(cieInfo.S_cieday);
+rtbWriteSpectrumFile(wls, spd, fullfile(resources, 'HangingLight.spd'));
+
+% make daylight for the windows behind the camera
+[wavelengths, magnitudes] = rtbReadSpectrum('D65.spd');
+scale = 1;
+magnitudes = scale * magnitudes;
+rtbWriteSpectrumFile(wavelengths, magnitudes, fullfile(resources, 'WindowLight.spd'));
+
+%% Obtain factoids with Mitsuba.
+
+% start by generating a regular scene file.
+hints.renderer = 'Mitsuba';
+nativeSceneFiles = rtbMakeSceneFiles(parentSceneFile, ...
+    'mappingsFile', mappingsFile, ...
+    'conditionsFile', conditionsFile, ...
+    'hints', hints);
+
+% convert regular scene file for factoid rendering
+factoidSceneFile = rtbWriteMitsubaFactoidScene(nativeSceneFiles{1}, ...
+    'hints', hints);
+
+% invoke Mitsuba to get the factoids
+factoids = rtbRenderMitsubaFactoids(factoidSceneFile, ...
+    'hints', hints);
+
+%% Plot the factoids.
+factoidNames = fieldnames(factoids);
+nFactoids = numel(factoidNames);
+rows = 3;
+columns = ceil(nFactoids / rows);
+for ff = 1:nFactoids
+    factoidName = factoidNames{ff};
+    factoid = factoids.(factoidName);
+    
+    subplot(rows, columns, ff);
+    
+    switch factoidName
+        case {'primIndex', 'shapeIndex'}
+            % index/nominal data with colormap
+            imshow(factoid.data(:,:,1), prism());
+        otherwise
+            % continuous data as stretched rgb
+            stretchedRgb = factoid.data ./ max(factoid.data(:));
+            imshow(stretchedRgb);
+    end
+    
+    title(factoidName);
+end