GU/GU_PointGroup.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:
 *      Dale Ducharme   
 *      Side Effects Software Inc.
 *      20 Maud St.
 *      Toronto, Ontario,  M5V 2M5
 *      Canada
 *      416-366-4607
 *
 * NAME:        GU Library (C++)
 *
 * COMMENTS:
 *
 */

#ifndef __GU_PointGroup_h__
#define __GU_PointGroup_h__

#include "GU_API.h"
#include <GEO/GEO_Point.h>
#include <GEO/GEO_PointRef.h>
#include "GU_Group.h"
#include "GU_Detail.h"

////////////////////////////////////////////////////////////////////////////
//
//  GU_PointGroup - Creates a point group and selects specific points to
//                  be created given a set of parameters 
//
////////////////////////////////////////////////////////////////////////////

class GU_API GU_PointGroup : public GU_Group
{
public:
    // constructor and destructor which allocates and frees a ptRefArray
    GU_PointGroup(const char *n, GU_Detail *gdp, unsigned mask = 0xffffffff);
    GU_PointGroup(GU_Detail *gdp, GB_PointGroup *ptgroup);
    virtual ~GU_PointGroup();    

    virtual GB_Group    *newGroup(const char *name);
    virtual GB_Group    *find(const char *name) const;
    virtual void         destroy(void);

    // actual method that allows you to generate a group given the 
    // set of parameters
    void                 generateGroup(const GU_GroupParms &parms); 

    // methods that allow you to select points to be in the group 
    void                 range(int, int, int, int, int, int) const; 
    void                 pattern(char *pattern, int nelements,
                                 int order) const;
    int                  boundingBox(float tx, float ty, float tz,
                                     float halfx, float halfy, float halfz,
                                     float rx, float ry, float rz);
    void                 boundingSphere(float tx, float ty, float tz, 
                                        float radx, float rady, float radz) 
                                        const;
    void                 boundingObject(GU_RayIntersect *rayTree) const;
    void                 boundingVolume(const GU_Detail *vgdp, fpreal iso, bool invert) const;

    void                 normal(UT_Vector3 &nml, float angle) const;
    void                 backface(const UT_Vector3 &eye) const;
    void                 degenerate(bool degenerate, bool zaf, bool doOpen,
                                    float tol) const;

    void                 edgeDist(GB_PointGroup *ptgroup, int depth) const;

protected:
    void                 buildRingZero(
                            UT_PtrArray<UT_PtrArray<GEO_Point *> *> &ringzero) 
                            const;

private:
    GEO_PointRefArray   *ptArray;               // Point array for prim masks
    const char          *theName;               // name of the group
    int                  allPoints;
};

#endif

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