GT_DAIndexPair.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.
 */

#ifndef __GT_DAIndexPair__
#define __GT_DAIndexPair__

#include "GT_API.h"
#include "GT_DANumeric.h"

#include <UT/UT_SmallArray.h>

/// Extension of GT_DANumeric which supports configuring the index-pair objects
/// and properties. The indices and weights are represented as an interleaved
/// float tuple for each entry, e.g. (index0, weight0, index1, weight1, ...)
template <typename T>
class GT_API GT_DAIndexPair : public GT_DANumeric<T>
{
public:
    /// NOTE: the tuple size includes both the indices and weights, so this
    /// is twice the tuple size of a GA index-pair attribute!
    GT_DAIndexPair(int array_size, int tuple_size)
        : GT_DANumeric<T>(array_size, tuple_size, GT_TYPE_INDEXPAIR)
    {
        static_assert(
                SYS_IsFloatingPoint<T>::value,
                "Index-pair attributes should be a float tuple!");
    }

    ~GT_DAIndexPair() override;
    UT_NON_COPYABLE(GT_DAIndexPair)

    int getIndexPairObjectSetCount() const override;
    void getIndexPairObjects(GT_AttributeListHandle &properties, int s = 0)
            const override;

    void setIndexPairObjectSetCount(int n);
    void setIndexPairObjects(int s, const GT_AttributeListHandle &properties);

private:
    UT_SmallArray<GT_AttributeListHandle> myObjectSets;
};

GT_EXTERN_TEMPLATE(GT_DAIndexPair<fpreal16>);
GT_EXTERN_TEMPLATE(GT_DAIndexPair<fpreal32>);
GT_EXTERN_TEMPLATE(GT_DAIndexPair<fpreal64>);

#endif