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cs440-acg/ext/openexr/OpenEXR/IlmImf/ImfDeepImageState.h

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+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2013, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// *       Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// *       Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// *       Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+#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