MRChunkIterator.h

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#pragma once
 
#include "MRMeshFwd.h"
#include "MRIteratorRange.h"
 
#include <iterator>
 
namespace MR
{
 
struct Chunk
{
    size_t offset;
    size_t size;
};
 
struct ChunkIterator
{
    size_t totalSize{ 0 };
    size_t chunkSize{ 0 };
    size_t overlap{ 0 };
    size_t index{ 0 };
 
    MRMESH_API bool operator ==( const ChunkIterator& other ) const;
 
    using iterator_category = std::input_iterator_tag;
    using value_type = Chunk;
    using difference_type = std::ptrdiff_t;
    using pointer = Chunk*;
    using reference = Chunk&;
 
    MRMESH_API ChunkIterator& operator ++();
    MRMESH_API ChunkIterator operator ++( int );
 
    MRMESH_API Chunk operator *() const;
    Chunk operator ->() const { return operator*(); }
};
 
MRMESH_API size_t chunkCount( size_t totalSize, size_t chunkSize, size_t overlap = 0 );
 
MRMESH_API IteratorRange<ChunkIterator> splitByChunks( size_t totalSize, size_t chunkSize, size_t overlap = 0 );
 
} // namespace MR