Added commentss for later upgrade.

git-svn-id: https://svn.code.sf.net/p/dct/code/trunk@878 4c865b51-4357-4376-afb4-474e03ccb993

5_reconstruction/gtForwardSimulate_v2.m

@@ -103,7 +103,7 @@ detdiru0     = labgeo.detdiru;        % will use detdiru0 to distinguish from ro
 detdirv0     = labgeo.detdirv;
 rotdir       = labgeo.rotdir;
 beamdir      = labgeo.beamdir;
-pixelsize    = mean([labgeo.pixelsizeu, labgeo.pixelsizev]);
+pixelsize    = mean([labgeo.pixelsizeu, labgeo.pixelsizev]);  % !!! using a mean pixel size is uncertain; ideally fwd simulation should use mm-s
 detrefpos    = labgeo.detrefpos ./ pixelsize;   % detector reference position in pixels
 detposcorner = gtGeoDetOrig(labgeo) ./ pixelsize;  % the (0,0) corner of the detector in Lab system (edge of detector pixel)
 
@@ -176,7 +176,10 @@ for n = first : last
     gr     = gtCalculateGrain(gr, parameters);
     u      = gr.allblobs.uv(:, 1);
     v      = gr.allblobs.uv(:, 2);
+    
     % radial distance of spot center from detector center
+    % !!! to be corrected: detrefu and detrefv can be anywhere, not necessarily in the
+    % center
     radius = sqrt((u-detrefu).^2 + (v-detrefv).^2);
 
     %%% Get the average difspot X and Y sizes for the current spots in the grain,
@@ -192,6 +195,7 @@ for n = first : last
 
     % allow for a lateral deviation of spot postions based on grain orientation statics
     %dif_Offset   = fsim.Rdist_factor * gr.stat.Rdiststd * norm(detrefpos)
+    % !!! detrefpos is not necessarily the distance; depends on definition by user
     dif_Offset    = fsim.Rdist_factor * deg2rad(gr.stat.dangstd) * norm(detrefpos);
 
     grainBBox = [max(gr.bbxs), max(gr.bbys)];