comparison toolboxes/graph_visualisation/graphViz4Matlab/layouts/Abstractlayout.m @ 0:e9a9cd732c1e tip

first hg version after svn

+classdef Abstractlayout < handle
+% This class represents an abstract graph layout. Subclass to create actual
+% layouts.  
+
+  properties(Abstract = true)
+     xmin;               % The left most point on the graph axis in data units           
+     xmax;               % The right most point on the graph axis in data units
+     ymin;               % The bottom most point on the graph axis in data units
+     ymax;               % The top most point on the graph axis in data units
+     adjMatrix;          % The adjacency matrix
+     maxNodeSize;        % The maximum diameter of a node in data units
+     image;              % A 20-by-20-by-3 array specifying an image for 
+                         % the smartgraph button that will launch this
+                         % layout.
+     name;               % A unique name for instances of this class. 
+     shortDescription;   % A short description used for tooltips.
+     nodeSize;           % The calculated node size, call dolayout() before accessing
+     centers;            % The calculated node centers in an n-by-2 matrix
+  end
+    
+   methods
+       function dolayout(obj,adjMatrix,graphAxis,maxNodeSize)
+       % Calculate the node centers and an optimal size
+            obj.adjMatrix = adjMatrix;
+            obj.maxNodeSize = maxNodeSize;
+            xlimits = get(graphAxis,'XLim');
+            ylimits = get(graphAxis,'YLim');
+            obj.xmin = xlimits(1); obj.xmax = xlimits(2);
+            obj.ymin = xlimits(1); obj.ymax = ylimits(2);
+            obj.calcLayout();
+       end
+       
+       function available = isavailable(obj)
+       % Test to see if this layout is available.    
+           available = true;
+       end
+       
+   end
+   
+   methods(Access = 'protected')
+      
+       function setImage(obj,color)
+       % Sets the image to a grid with the specified color in rgb normalized
+       % units, i.e. [0.2 0.5 0.9].
+            obj.image = cat(3,color(1)*ones(20,20),color(2)*ones(20,20),color(3)*ones(20,20));
+            obj.image(1:4:20,:,:) = 0;
+            obj.image(:,1:4:20,:) = 0;
+       end
+       
+       
+   end
+   
+   methods(Abstract = true, Access = 'protected')
+       calcLayout(obj);     % do the actual work
+   end
+    
+end