GU/GU_Duplicate.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:
 *      Jonathan McGee from Mark Elendt
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        GU_Duplicate.h ( GU Library, C++) (based on GU_Copy.h)
 *
 * COMMENTS:    Duplicate (copy) subset of a gdp with a transform.
 *              Retain source geometry.
 */

#ifndef __GU_Duplicate__
#define __GU_Duplicate__

#include "GU_API.h"

class UT_Matrix4;
class UT_String;
class UT_Interrupt;
class GB_PrimitiveGroup;
class GB_PointGroup;
class GU_Detail;
class GEO_AttributeHandleList;

typedef int     (*GU_DuplicateTransformCallback)(UT_Matrix4 &, int copynum,
                                                    void *data);

typedef int     (*GU_DuplicateGroupNameCallback)(UT_String &, void *data);

class GU_API GU_DuplicateParms {
public:
     GU_DuplicateParms();
    ~GU_DuplicateParms();

    void        setKeepVectorLength(bool onoff) { myKeepFlag = onoff; }
    void        setPreserveGroups(bool onoff) { myPreserveGroups = onoff; }
    void        setTransformCallback(GU_DuplicateTransformCallback callback)
                {
                    myXformCallback = callback;
                }
    void        setGroupNameCallback(GU_DuplicateGroupNameCallback callback)
                {
                    myGNameCallback = callback;
                }

    // If a setSource is used, the callback is ignored.

    void        setSource(const GU_Detail *inputgdp, const GU_Detail *dupgdp) 
                {
                    myInputSource = inputgdp;
                    myDuplicateSource = dupgdp;
                }

    void        duplicate(GU_Detail *gdp, int ncopies,
                                bool changed, void *data = 0);

private:

    void        transform(GU_Detail *gdp, bool changed,
                          const UT_Matrix4 &xform, GB_PrimitiveGroup *grp,
                          int primstart, int primend,
                          int ptstart, int ptend,
                          GEO_AttributeHandleList &pthandles,
                          GEO_AttributeHandleList &vtxhandles,
                          GEO_AttributeHandleList &primhandles,
                          GEO_AttributeHandleList &ptvectors,
                          GEO_AttributeHandleList &vtxvectors,
                          GEO_AttributeHandleList &primvectors);

    void        doDuplicate(GU_Detail *gdp, int ncopies, bool changed,
                                void *data, UT_Interrupt *boss);

    GU_DuplicateTransformCallback        myXformCallback;
    GU_DuplicateGroupNameCallback        myGNameCallback;
    
    const GU_Detail             *myInputSource;
    const GU_Detail             *myDuplicateSource;

    bool                         myKeepFlag;
    bool                         myPreserveGroups;
};

#endif

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