Updated documentation

src/dxfdata.cc

@@ -42,6 +42,20 @@
 #include <QDir>
 #include "value.h"
 
+/*! \class DxfData
+
+	The DxfData class fulfils multiple tasks, partially for historical reasons.
+	FIXME: It's a bit messy and is a prime target for refactoring.
+
+	1) Read DXF file from disk
+	2) Store contents of DXF files as points, paths and dims
+	3) Store 2D polygons, both from the polygon() module and from 2D CSG operations.
+	   Used for tesselation into triangles
+  4) Store 2D polygons before exporting to DXF
+	
+
+ */
+
 struct Line {
 	int idx[2]; // indices into DxfData::points
 	bool disabled;

src/polyset.cc

@@ -25,12 +25,21 @@
  */
 
 #include "polyset.h"
-// FIXME: Reenable/rewrite - don't be dependant on GUI
-// #include "Preferences.h"
 #include "linalg.h"
 #include <Eigen/LU>
 #include <QColor>
 
+/*! /class PolySet
+
+	The PolySet class fulfils multiple tasks, partially for historical reasons.
+	FIXME: It's a bit messy and is a prime target for refactoring.
+
+	1) Store 2D and 3D polygon meshes from all origins
+	2) Store 2D outlines, used for rendering edges
+	3) Rendering of polygons and edges
+
+ */
+
 PolySet::PolySet() : grid(GRID_FINE), is2d(false), convexity(1)
 {
 }