SIM/SIM_PointTree.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:
 *      Jeff Lait
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        SIM_PointTree.h ( SIM Library, C++)
 *
 * COMMENTS: 
 *      This class builds a GEO_PointTree of the given Geometry
 *      as an alternative representation, allowing one to cache
 *      this useful structure.
 */

#ifndef __SIM_PointTree_H__
#define __SIM_PointTree_H__

#include "SIM_API.h"

#include "SIM_Data.h"
#include "SIM_DataUtils.h"

#include "SIM_Utils.h"

class GEO_PointTree;

/// This class holds a GEO_PointTree which people can query.
/// The pointtree refers to the point numbers of the SIM_Geometry
/// this is an alternative represenation of.
/// This caches the point positions in the SIM_Geometry's space,
/// so are independent of SIM_Geometry's transform.
class SIM_API SIM_PointTree : public SIM_Data
{
public:
    /// Get the tree
    GEO_PointTree       *getTree() const;

protected:
    explicit             SIM_PointTree(const SIM_DataFactory *factory);
    virtual             ~SIM_PointTree();

    /// Overrides to properly implement this class as a SIM_Data.
    /// This object is meant to be updated from the object's geometry at
    /// each frame, so we only implement skeleton save, and load methods.
    virtual void         initializeSubclass();
    virtual int64        getMemorySizeSubclass() const;
    virtual bool         getIsAlternateRepresentationSubclass() const;
    virtual void         initAlternateRepresentationSubclass(const SIM_Data &);

private:
    GEO_PointTree       *myTree;
    
    DECLARE_STANDARD_GETCASTTOTYPE();

    DECLARE_DATAFACTORY(SIM_PointTree,
                         SIM_Data,
                         "Point Tree",
                         getEmptyDopDescription());
};

#endif

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