vcglib/img/img_base.h

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2009-07-14 16:43:19 +02:00
#ifndef IMG_BASE_H_
#define IMG_BASE_H_
/*! \file img_base.h
\brief basic definitions for the img module
This header contains the basic module definitions.
*/
/// base of the static assertion mechanism
template<bool> struct NON_TRUE_EXPR_CompileTimeError;
/// partial instantiation for the static assertion mechanism
template<> struct NON_TRUE_EXPR_CompileTimeError<true> {};
/// the static assertion mechanism
#define STATIC_ASSERT(exp) (NON_TRUE_EXPR_CompileTimeError< (exp) >())
/// base of the static typecheck mechanism
template<typename> struct NON_FLOAT_OR_DOUBLE_TYPE_CompileTimeError;
/// partial instantiation for the static typecheck mechanism
template<> struct NON_FLOAT_OR_DOUBLE_TYPE_CompileTimeError<float> {};
/// partial instantiation for the static typecheck mechanism
template<> struct NON_FLOAT_OR_DOUBLE_TYPE_CompileTimeError<double> {};
/// the static typecheck mechanism
#define STATIC_FLOAT_OR_DOUBLE_TYPECHECK(type) (NON_FLOAT_OR_DOUBLE_TYPE_CompileTimeError< type >())
/// define NULL pointer value
#ifndef NULL
#ifdef __cplusplus
#define NULL 0
#else
#define NULL ((void *)0)
#endif
#endif
#include <assert.h>
#include <math.h>
#include <exception>
#include <typeinfo>
/*! \brief the img module namespace
this is the main image module namespace.
*/
namespace img {
/*! \brief the basic exception class
this is the basic image exception class, it simply carries an error string to the console.
*/
class ImageException: public std::exception
{
public:
/// the error string
const char *message;
/// default constructor
ImageException():exception(),message("no message"){}
/*! \brief message carrying constructor
\param arg_message the error string
*/
ImageException(const char *arg_message):exception(),message(arg_message){}
/// the destructor
virtual ~ImageException () throw (){}
};
} //end namespace img
#endif /*IMG_BASE_H_*/