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