sceneapi.h

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/**********************************************************************
 *<
    FILE: sceneapi.h

    DESCRIPTION: Scene interface

    CREATED BY: Rolf Berteig

    HISTORY: Created 13 January 1995

 *> Copyright (c) 1994, All Rights Reserved.
 **********************************************************************/


#pragma once
#include "maxheap.h"
#include "maxtypes.h"

class BaseObject;
class ITreeEnumProc;

class IScene: public MaxHeapOperators {     
    public:
        virtual int EnumTree( ITreeEnumProc* proc )=0;
        virtual void FlagFGSelected( TimeValue t )=0;
        virtual void FlagFGAnimated( TimeValue t )=0;
        virtual void FlagFGDependent( TimeValue t, BaseObject *obj )=0;
    };


// The purpose of this callback is to call FlagForeground() for
// any nodes in the scene that are supposed to be in the foreground.
class ChangeForegroundCallback: public MaxHeapOperators {
    public:
        virtual ~ChangeForegroundCallback() {;}
        virtual BOOL IsValid()=0;
        virtual void Invalidate()=0;
        virtual void Validate()=0;
        virtual void callback(TimeValue t,IScene *scene)=0;
    };