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///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2013, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
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///////////////////////////////////////////////////////////////////////////
#ifndef INCLUDED_IMF_DEEPIMAGESTATE_H
#define INCLUDED_IMF_DEEPIMAGESTATE_H
//-----------------------------------------------------------------------------
//
// enum DeepImageState -- describes how orderly the pixel data
// in a deep image are
//
// The samples in a deep image pixel may be sorted according to
// depth, and the sample depths or depth ranges may or may not
// overlap each other. A pixel is
//
// - SORTED if for every i and j with i < j
//
// (Z[i] < Z[j]) || (Z[i] == Z[j] && ZBack[i] < ZBack[j]),
//
// - NON_OVERLAPPING if for every i and j with i != j
//
// (Z[i] < Z[j] && ZBack[i] <= Z[j]) ||
// (Z[j] < Z[i] && ZBack[j] <= Z[i]) ||
// (Z[i] == Z[j] && ZBack[i] <= Z[i] & ZBack[j] > Z[j]) ||
// (Z[i] == Z[j] && ZBack[j] <= Z[j] & ZBack[i] > Z[i]),
//
// - TIDY if it is SORTED and NON_OVERLAPPING,
//
// - MESSY if it is neither SORTED nor NON_OVERLAPPING.
//
// A deep image is
//
// - MESSY if at least one of its pixels is MESSY,
// - SORTED if all of its pixels are SORTED,
// - NON_OVERLAPPING if all of its pixels are NON_OVERLAPPING,
// - TIDY if all of its pixels are TIDY.
//
// Note: the rather complicated definition of NON_OVERLAPPING prohibits
// overlapping volume samples, coincident point samples and point samples
// in the middle of a volume sample, but it does allow point samples at
// the front or back of a volume sample.
//
//-----------------------------------------------------------------------------
#include "ImfNamespace.h"
#include "ImfExport.h"
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
enum DeepImageState
{
DIS_MESSY = 0,
DIS_SORTED = 1,
DIS_NON_OVERLAPPING = 2,
DIS_TIDY = 3,
DIS_NUMSTATES // Number of different image states
};
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
#endif
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