GT_RefineList.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.
 *
 * NAME:        GT_RefineList.h ( GT Library, C++)
 *
 * COMMENTS:
 */

#ifndef __GT_RefineList__
#define __GT_RefineList__

#include "GT_API.h"
#include "GT_Refine.h"
#include "GT_Primitive.h"
#include <UT/UT_Array.h>

/// Refine to a list of primitives.
///
/// When refining large numbers of primitives, you may want to refine each
/// primitive in turn rather than generating a full list of refined primitives.
class GT_API GT_RefineList {
public:
     GT_RefineList();
    ~GT_RefineList();

    /// Return the number of primitives in the list
    int         entries() const         { return myList.entries(); }

    /// Return a given primitive from the list
    const GT_PrimitiveHandle    &getPrimitive(int i) const { return myList(i); }

    /// Refine a primitive, adding primitives to the list
    bool        refine(GT_Primitive *prim, const GT_RefineParms *parms)
                    { return prim->refine(myRefiner, parms); }

    /// Clear all primitives from the list
    void        clear();

    class GT_API iterator
    {
        public:
            iterator()
                : myOwner(NULL), myCurr(0) {}
            iterator(const iterator &src)
                { *this = src; }
            ~iterator() {}

            const GT_PrimitiveHandle    getPrimitive() const
                                        {
                                           return myOwner->getPrimitive(myCurr);
                                        }
            int                         getCurr() const
                                        {
                                            return myCurr;
                                        }

            void        rewind()        { myCurr = 0; }
            void        advance()       { myCurr++; }
            bool        atEnd() const   { return myCurr >= myOwner->entries(); }

            iterator    &operator++()   { advance(); return *this; }
            // No post increment as it is dangerous.
            const iterator      &operator=(const iterator &src)
                                {
                                    myOwner = src.myOwner;
                                    myCurr = src.myCurr;
                                    return *this;
                                }

        private:
            iterator(const GT_RefineList *list)
                : myOwner(list)
                , myCurr(0) {}

            const GT_RefineList *myOwner;
            int                  myCurr;
            friend class GT_RefineList;
    };
    iterator    begin() const           { return iterator(this); }

private:
    class refiner : public GT_Refine {
    public:
        refiner(GT_RefineList &l)
            : myOwner(l) {}
        ~refiner() override {}
        void             addPrimitive(const GT_PrimitiveHandle &p) override
                            { myOwner.myList.append(p); }
        GT_RefineList   &myOwner;
    };

    refiner                             myRefiner;
    UT_Array<GT_PrimitiveHandle>        myList;
};

#endif