UI bug fixes

Fixed problems with the T-matrix calculation GUI. Includes:

- progress_callback function in all T-matrix class constructors
- Special case for displaying DDA progress (just in terminal for now)
- Other minor GUI related changes

Should resolve issue #45

Author: ilent2

+ott/+ui/+tmatrix/GeometricShape.mlapp

@@ -263,7 +263,7 @@ function DefaultProgressCallback(data)
 
       % Tell the user some things
       if pa.Results.verbose && pa.Results.z_rotational_symmetry ~= 1
-        disp(['Voxels with rotationa symmetry: ' num2str(size(xyz, 2))]);
+        disp(['Voxels with rotational symmetry: ' num2str(size(xyz, 2))]);
       end
 
       % Put everything in units of wavelengths
@@ -280,7 +280,7 @@ function DefaultProgressCallback(data)
         % Calculate alpha for remaining positions
 
         if isempty(pa.Results.spacing)
-          error('Spacing is needed for polarizability calculation');
+          error('spacing is needed for polarizability calculation');
         end
 
         % Get and filter k_particle, convert to index

+ott/TmatrixDda.m

@@ -92,6 +92,7 @@
       p.addParameter('index_particle', []);
 
       p.addParameter('verbose', false);
+      p.addParameter('progress_callback', @(x) []);
 
       p.parse(varargin{:});
 
@@ -125,7 +126,8 @@
           'z_mirror_symmetry', z_mirror_symmetry, ...
           'invmethod', p.Results.invmethod, ...
           'internal', p.Results.internal, ...
-          'verbose', p.Results.verbose);
+          'verbose', p.Results.verbose, ...
+          'progress_callback', p.Results.progress_callback);
     end
   end
 
@@ -186,7 +188,10 @@
       pa.addParameter('z_mirror_symmetry', false);
       pa.addParameter('internal', false);
       pa.addParameter('invmethod', []);
+      
       pa.addParameter('verbose', false);
+      pa.addParameter('progress_callback', @(x) []);
+      
       pa.parse(varargin{:});
 
       % Store inputs k_medium and k_particle

+ott/TmatrixEbcm.m

@@ -119,8 +119,14 @@
       p.addParameter('Nmax', []);
       p.addParameter('npts', []);
       p.addParameter('verbose', false);
+      p.addParameter('progress_callback', @(x) []);
 
       p.parse(varargin{:});
+      
+      % First check we have SMARTIES
+      if exist('slvForT', 'file') ~= 2
+        error('Could not find SMARTIES function slvForT, check SMARTIES installed');
+      end
 
       % Get the wavenumber of the particle and medium
       [tmatrix.k_medium, tmatrix.k_particle] = ...