GU/GU_MetaCluster.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:
 *      Mark Elendt
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        GU_MetaCluster.h ( GU Library, C++)
 *
 * COMMENTS:    Generates clusters of metaballs for better conversion
 *              to polygons
 */

#ifndef __GU_MetaCluster__
#define __GU_MetaCluster__

#include "GU_API.h"
class gu_MetaCluster;

class GU_API GU_MetaClusterParms {
public:
     GU_MetaClusterParms(const char *group_prefix = "mcluster",
                         int internal_groups = 1);
    ~GU_MetaClusterParms();

    void        setGroupPrefix(const char *pfix) { myGroupPrefix = pfix; }
    void        createInternalGroups(int onoff)  { myInternalFlag = onoff; }

    // Generate clusters of metaballs (i.e. mutually exclusive sets)
    void        makeClusters(GU_Detail *gdp, GB_PrimitiveGroup *group = 0);

    // After the clusters have been made, the following methods can be called.
    int                          getNClusters() { return (int)myClusters.entries(); }
    GB_PrimitiveGroup           *getCluster(int i);
    const UT_BoundingBox        &getClusterBox(int i);

private:
    void                                 clearClusters();

    gu_MetaCluster                      *myRoot;
    const char                          *myGroupPrefix;
    int                                  myInternalFlag;
    UT_PtrArray<gu_MetaCluster *>        myClusters;
};

#endif

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