C++ Code Documentation
imagegl::PostScript
Derived from: imagegl::PostscriptBase
Children: isight::context::Write
File: GEOM/imagegl/Postscript.H
This library prints OpenGL images in PostScript format. It produces high-quality rescalable vector/polygon graphics, not geom/bitmap graphics. It works using the OpenGL feedback mechanism.
This library is divided into three classes:
class PostScript - PostScript part of the implementation
class PostscriptBase - OpenGL part of the implementation
Use the library like this:
(1) create a PostScript instance X
(2) call X->set_ostream(o)
(2) in your imagegl draw handler method, render the object with OpenGL commands between calls X->begin() and X->end()
The library works by sorting the polygons by depth. It does not cull hidden polygons.
See also
(1) http://www.easysw.com/~mike/imagegl/index.html
(2) http://reality.sgi.com/mjk_asd/tips/Feedback.html
(3) geomview
Class PostscriptBase is the OpenGL part of the OpenGL-to-PostScript library. Class PostScript is the PostScript part of the OpenGL-to-PostScript library.
Acknowledgements: This code is modified from GLP, an OpenGL to Postscript class library by Michael Sweet. http://www.easysw.com/~mike/imagegl/ .
public:
- PostScript() throw();
void constructor - ~PostScript() throw();
destructor - void write( ::io::Ostream &o, bool EPS );
- virtual void draw() = 0;
- virtual void begin_() throw( ::io::WriteException );
begin_(), end_() performs the PostScript side of the conversion - virtual void end_() throw( ::io::WriteException );
write list of elements in PostScript form write postscript trailer
- int _page_count;
- ::io::Ostream *_ostream;
Page count - int _status;
Output file - void write_postscript_header( ::io::Ostream &o ) throw( ::io::WriteException );
- bool _EPS;
- PostScript( PostScript const & ) throw();
disabled copy constructor - PostScript &operator=( PostScript const & ) throw();
disabled assignment operator
| imagegl::PostScript | GANG |