SIM/SIM_GuideTimeDep.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.
 *
 * Produced by:
 *      Side Effects Software Inc.
 *      477 Richmond Street West, Suite 1001
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 */

#ifndef __SIM_GuideTimeDep_h__
#define __SIM_GuideTimeDep_h__

#include "SIM_API.h"
#include <UT/UT_HashTable.h>
#include "SIM_Guide.h"

/// This SIM_Guide subclass is a container for another type of SIM_Guide
/// which is provided as a template parameter. Each object causes a new
/// SIM_Guide to be generated, and requests are passed on to that contained
/// SIM_Guide.
template<class GuideBase>
class SIM_GuideTimeDep : public GuideBase
{
public:
    /// Constructor which takes a const SIM_Data as our owner.
    explicit                     SIM_GuideTimeDep(const SIM_Data *owner)
                                    : GuideBase(owner)
                                 {
                                 }
    /// Constructor which takes an owner, and a flag to pass on to our base.
    /// This flag is used by SIM_GuideShared.
    explicit                     SIM_GuideTimeDep(const SIM_Data *owner,
                                                  bool displayonce)
                                    : GuideBase(owner, displayonce)
                                 {
                                 }
    /// Destructor for this class.
    virtual                     ~SIM_GuideTimeDep()
                                 {
                                 }

protected:
    virtual GU_ConstDetailHandle getGuideGeometrySubclass(
                                                const SIM_RootData &root,
                                                UT_DMatrix4 &xform,
                                                const SIM_Time &t)
                                 {
                                     if( t != myTime )
                                     {
                                         this->clear();
                                         myTime = t;
                                     }

                                     return GuideBase::
                                            getGuideGeometrySubclass(root,
                                                                     xform,
                                                                     t);
                                 }

private:
    SIM_Time                     myTime;
};

#endif

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