GEO/GEO_PrimMetaSQuad.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.
 *      20 Maud St.
 *      Toronto, Ontario,  M5V 2M5
 *      Canada
 *      416-366-4607
 *
 * NAME:        Geometry Library (C++)
 *
 * COMMENTS:
 *
 */

#ifndef __GEO_PrimMetaSQuad_H__
#define __GEO_PrimMetaSQuad_H__

#include "GEO_API.h"
#include <UT/UT_Vector3.h>
#include "GEO_MetaPrim.h"
#include "GEO_PrimSphere.h"

class TS_MetaSuperQuadric;

class GEO_API GEO_PrimMetaSQuad : public GEO_PrimSphere, public GEO_MetaPrim {
public:
    GEO_PrimMetaSQuad(GEO_Detail *d);
    virtual ~GEO_PrimMetaSQuad();

    virtual unsigned             getPrimitiveId() const;
    virtual void                 copyPrimitive(const GEO_Primitive *src,
                                                GEO_Point **ptredirect);
    virtual int                  isDegenerate() const;
    virtual GEO_Primitive       *copy(int preserve_shared_pts = 0) const; 

//
//  Methods to handle meta interface
    virtual void                 initTSdata();
    virtual TS_MetaPrimitive    *getMetaPrim();
    virtual GEO_MetaPrim        *castToMetaPrim();
    virtual const GEO_MetaPrim  *castToMetaPrim() const;

    // A function that allocates a new TS_MetaSuperQuadric and returns it.
    // Used in the metaExpression parser to handle multiple instances
    // of a metaball being used in the same expression
    virtual TS_MetaPrimitive    *getNewMetaPrim();

    void                setXYexp(float v) { xyExp = v; }
    void                setZexp(float v) { zExp = v; }
    float               getXYexp(void) const { return xyExp; }
    float               getZexp(void) const { return zExp; }

    // Have we been deactivated and stashed?
    virtual             void   stashed(int onoff);

protected:
    virtual void                 copyOffsetPrimitive(const GEO_Primitive *src,
                                                int basept);
    virtual int         savePrivate(ostream &os, int binary) const;
    virtual bool        loadPrivate(UT_IStream &is);

private:

    float                xyExp, zExp;
    char                 myStashedState;

    TS_MetaSuperQuadric *tsData;

};
#endif

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