home *** CD-ROM | disk | FTP | other *** search
- #ifndef K3DSDK_ARRAY_H
- #define K3DSDK_ARRAY_H
-
- // K-3D
- // Copyright (c) 1995-2008, Timothy M. Shead
- //
- // Contact: tshead@k-3d.com
- //
- // This program is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, or (at your option) any later version.
- //
- // This program 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. See the GNU
- // General Public License for more details.
- //
- // You should have received a copy of the GNU General Public
- // License along with this program; if not, write to the Free Software
- // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- #include "almost_equal.h"
- #include "pipeline_data.h"
- #include <map>
-
- namespace k3d
- {
-
- /// Abstract interface that can be used to store heterogeneous collections of arrays.
- /// Methods are provided for cloning arrays (virtual ctor pattern), plus type-agnostic
- /// methods similar to std::vector, and storage for arbitrary metadata (name-value pairs).
- class array
- {
- public:
- /// Storage for array metadata
- typedef std::map<string_t, string_t> metadata_t;
-
- array();
- array(const metadata_t& Metadata);
- virtual ~array();
-
- /// Returns an empty array with the same concrete type as this array (a variation on virtual ctor)
- virtual array* clone_type() const = 0;
- /// Returns a copy of this array (virtual ctor)
- virtual array* clone() const = 0;
- /// Returns a copy of a half-open range of this array (a variation on virtual ctor)
- virtual array* clone(const uint_t Begin, const uint_t End) const = 0;
-
- /// Sets the size of this array.
- virtual void resize(const uint_t NewSize) = 0;
- /// Returns the size of this array
- virtual const uint_t size() const = 0;
- /// Returns true iff this array is empty
- virtual const bool_t empty() const = 0;
- /// Returns true iff this array is equivalent to another, using the imprecise semantics of almost_equal to compare values.
- /// \note: Returns false if given an array with a different concrete type.
- virtual const bool_t almost_equal(const array& Other, const uint64_t Threshold) const = 0;
-
- /// Sets a new name-value pair, overwriting the value if the name already exists
- void set_metadata_value(const string_t& Name, const string_t& Value);
- /// Sets a collection of name-value pairs, overwriting any existing values
- void set_metadata(const metadata_t& Values);
- /// Returns the set of all name-value pairs
- metadata_t get_metadata() const;
- /// Returns a value by name, or empty-string if the name doesn't exist
- const string_t get_metadata_value(const string_t& Name) const;
- /// Erases an existing name-value pair
- void erase_metadata_value(const string_t& Name);
-
- protected:
- /// Storage for array metadata
- metadata_t metadata;
- };
-
- /// Specialization of almost_equal that tests k3d::array for equality
- template<>
- class almost_equal<array>
- {
- typedef array T;
- public:
- almost_equal(const uint64_t Threshold) :
- threshold(Threshold)
- {
- }
-
- inline const bool operator()(const T& A, const T& B) const
- {
- return A.almost_equal(B, threshold);
- }
-
- const uint64_t threshold;
- };
-
- /// Specialization of pipeline_data_traits for use with k3d::array
- template<>
- class pipeline_data_traits<array>
- {
- public:
- static array* clone(const array& Other)
- {
- return Other.clone();
- }
- };
-
- } // namespace k3d
-
- #endif // !K3DSDK_ARRAY_H
-
-