Removed the execute bit on the source code;
Removed the execute bit from header files;
Renamed header files to use .h;
Adding CMake files required to build viewpoints.
(1) assumes that Fl_flews is in fl_flews.
(2) assumes that the source code location is within src/.
Removing Makefile.
Updated header files with UNUSED macro;
Fixed include calls (related to code reorganization);
Fixed missing Fl_Menu_Item initialization not being complete;
Added UNUSED macro.
Fixed a bunch of local variables shadowing (class and global variables);
Fixed whitespace issues (trailing spaces followed by a new line);
Fixed whitespace issues.
Fixed whitespace issues.
Fixed a header issue;
Fixed fltk class member draw() going from public to protected;
Fixed initialization list having the incorrect order.
Fixed an unsigned to sign comparison.
Fixed whitespace issue;
Fixed warning:
(1) incorrect initialization list order;
(2) self assignment;
(3) incomplete initialization of Fl_Menu_Item;
Fixed warning:
(1) incorrect initialization list order;
(2) self assignment;
(3) incomplete initialization of Fl_Menu_Item;
(4) local variables shadowing (class variables);
(5) NULL replaced with nullptr;
NULL replaced with nullptr;
NULL replaced with nullptr;
Fixed whitespace issue (space followed by newline);
Fixed whitespace issue (space followed by newline);
Fixed whitespace issue (space followed by newline);
Fixed whitespace issue (space followed by newline);
Fixed compiler warnings;
 (TODO: still left, old OpenGL calls, unclear code)