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106 lines
2.5 KiB
106 lines
2.5 KiB
4 years ago
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#ifndef GFX_INCLUDED // -*- C++ -*-
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#define GFX_INCLUDED
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#if !defined(__GNUC__)
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# pragma once
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#endif
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/************************************************************************
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Main header file for the libgfx graphics library.
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$Id: gfx.h 455 2005-08-17 18:10:25Z garland $
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************************************************************************/
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#if defined(HAVE_CONFIG_H)
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# include "config.h"
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#elif defined(_MSC_VER)
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# include "config-vc.h"
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#elif defined(__APPLE__)
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# include "config-osx.h"
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#endif
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#include <cstdlib>
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#include <cmath>
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#include <climits>
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#include <iostream>
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////////////////////////////////////////////////////////////////////////
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//
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// Standards notwithstanding, not all platforms define exactly the
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// same things in their header files. We try to compensate here.
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//
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#if !defined(HAVE_BOOL)
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typedef int bool;
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const bool false = 0;
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const bool true = 1;
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#endif
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// Microsoft doesn't define std::min() & std::max() because it conflicts with
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// <windef.h>, and their _MIN/_MAX macro workarounds don't add the std::
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// namespace qualification. These macros provide a uniform way of getting
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// around this problem.
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//
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#if defined(_MSC_VER)
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# define MIN(a,b) std::_cpp_min(a,b)
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# define MAX(a,b) std::_cpp_max(a,b)
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#else
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# if defined(__CYGWIN__)
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# define NOMINMAX
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# endif
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# define MIN(a,b) std::min(a,b)
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# define MAX(a,b) std::max(a,b)
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#endif
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#ifndef M_PI
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# define M_PI 3.14159265358979323846264338327950288419716939937510582097494459
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#endif
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#if !defined(HUGE) && defined(HUGE_VAL)
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# define HUGE HUGE_VAL
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#endif
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#if !defined(HAVE_RINT)
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inline double rint(double x) { return floor(x + 0.5); }
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#endif
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////////////////////////////////////////////////////////////////////////
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//
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//
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//
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namespace gfx
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{
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#if defined(HAVE_RANDOM)
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inline double random1() { return (double)random() / (double)LONG_MAX; }
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inline char random_byte() { return (char)(random() & 0xff); }
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#else
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inline double random1() { return (double)rand() / (double)RAND_MAX; }
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inline char random_byte() { return (char)(rand() & 0xff); }
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#endif
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const double FEQ_EPS = 1e-6;
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const double FEQ_EPS2 = 1e-12;
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inline bool FEQ(double a, double b, double e=FEQ_EPS) {return fabs(a-b)<e;}
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inline bool FEQ2(double a, double b, double e=FEQ_EPS2) {return fabs(a-b)<e;}
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////////////////////////////////////////////////////////////////////////
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//
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//
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//
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#define TIMING(t, cmd) { t=get_cpu_time(); cmd; t=get_cpu_time() - t; }
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extern double get_cpu_time();
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} // namespace gfx
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#ifndef GFX_NAMESPACE
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using namespace gfx;
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#endif
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// GFX_INCLUDED
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#endif
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