arc.h

//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef PXR_USD_PCP_ARC_H
#define PXR_USD_PCP_ARC_H

#include "pxr/pxr.h"
#include "pxr/usd/pcp/api.h"
#include "pxr/usd/pcp/mapExpression.h"
#include "pxr/usd/pcp/node.h"
#include "pxr/usd/pcp/types.h"
#include "pxr/usd/sdf/path.h"

PXR_NAMESPACE_OPEN_SCOPE

class PcpPrimIndex_Graph;

class PcpArc 
{
public:
    PcpArc()
        : type(PcpArcTypeRoot)
        , siblingNumAtOrigin(0)
        , namespaceDepth(0)
    { }

    PcpArcType type;
    
    PcpNodeRef parent;
    
    PcpNodeRef origin;
    
    PcpMapExpression mapToParent;

    // index among sibling arcs at origin; lower is stronger
    int siblingNumAtOrigin;
    
    // Absolute depth in namespace of node that introduced this node.
    // Note that this does *not* count any variant selections.
    int namespaceDepth;
};

PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_USD_PCP_ARC_H