debug.h

/*
 * vim: ts=4 sw=4 et tw=0 wm=0
 *
 * libavoid - Fast, Incremental, Object-avoiding Line Router
 *
 * Copyright (C) 2004-2008  Monash University
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * See the file LICENSE.LGPL distributed with the library.
 *
 * Licensees holding a valid commercial license may use this file in
 * accordance with the commercial license agreement provided with the 
 * library.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 *
 * Author(s):   Michael Wybrow
*/


#ifndef AVOID_DEBUG_H
#define AVOID_DEBUG_H


#if defined(_MSC_VER) && defined(USE_ATLTRACE)
    // Using Microsoft Visual C++ compiler and we want to use ATLTRACE
    // to send warnings and error messages to a GUI window.

    // Prevent inclusion of min and max macros.
    #define NOMINMAX

    #include <afx.h>
#endif

#include <cstdarg>
#include <cstdio>
#include <iostream>


namespace Avoid {

// db_printf is debugging output for verifying behaviour of the router:
#ifdef LIBAVOID_DEBUG

  #if defined(_MSC_VER) && defined(USE_ATLTRACE)
    #define db_printf  ATL::AtlTrace
  #else
    inline void db_printf(const char *fmt, ...)
    {
        va_list ap;
        va_start(ap, fmt);
        vfprintf(stdout, fmt, ap);
        va_end(ap);
    }
  #endif

#else

    inline void db_printf(const char *, ...)
    {
    }

#endif

// err_printf are critical errors that mean something pretty bad has happened:
#if defined(_MSC_VER) && defined(USE_ATLTRACE)

    #define err_printf ATL::AtlTrace

#else

    // For other environments we always show these errors.
    inline void err_printf(const char *fmt, ...)
    {
        va_list ap;
        va_start(ap, fmt);
        vfprintf(stderr, fmt, ap);
        va_end(ap);
    }

#endif

}

// Precision of numbers in libavoid SVG debug file.  Used in printf
// strings ("%" PREC "g"), e.g., "%.16g"
#if defined(HIGH_PRECISION_DEBUG)
    #define PREC ".16"
#else
    #define PREC ""
#endif

#endif