COP_CameraRegistry.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * COMMENTS:    Global registry of the viewer cameras.
 *
 */

#pragma once

#include "COPZ_API.h"

#include <UT/UT_Lock.h>
#include <OBJ/OBJ_Camera.h>

///
/// Stores cameras for other nodes to possibly retrieve
/// Currently only one path, ideally will allow multiple viewport
/// simultaneously.
///
class COPZ_API COP_CameraRegistry
{
public:
    class                       CameraInfo
    {
    public:
        UT_Matrix4D             xform;
        OBJ_CameraParms         parms;
    };

    static CameraInfo           fetchCamera(const char *viewname);
    static void                 stashCamera(const UT_StringHolder &viewname,
                                           const CameraInfo &info);

    static void                 registerNode(const OP_Node *node,
                                             const UT_StringHolder &viewname);
    static void                 deregisterNode(const OP_Node *node);

protected:
    static COP_CameraRegistry   *getRegistry();

    CameraInfo                   _fetchCamera(const char *viewname);
    void                         _stashCamera(const UT_StringHolder &viewname,
                                             const CameraInfo &info);
    void                         _registerNode(const OP_Node *node,
                                               const UT_StringHolder &viewname);
    void                         _deregisterNode(const OP_Node *node);

    UT_Lock                      myLock;
    UT_Map<int, UT_StringHolder> myOpNodes;
    UT_StringMap<CameraInfo>     myCameras;
};