add vcglib

vcglib/img/img_base.h

@@ -0,0 +1,69 @@
+#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_*/