CDataArray2D::Accessor Class Reference

#include <xsi_dataarray2D.h>

List of all members.

Public Member Functions
	Accessor ()
	Accessor (const Accessor &in_accessor)
Accessor &	operator= (const Accessor &in_accessor)
ULONG	GetCount () const
const T &	operator[] (ULONG in_nIndex) const
T &	operator[] (ULONG in_nIndex)

Detailed Description

template<class T>
class XSI::CDataArray2D< T >::Accessor

Since:

7.0

See also:

CIndexSet, CDataArray, CDataArray2D

Constructor & Destructor Documentation

Constructs an Accessor object from another Accessor object.

Parameters:

in_accessor

constant Accessor object.

Member Function Documentation

Returns the number of elements in the array.

Returns:

Number of elements.

Accessor to elements at a given index. This operator is called when reading the data so the return value is read-only.

Parameters:

in_nIndex

Index in the array. The index must be smaller than the number of elements in the array, otherwise the results are unpredicted.

Returns:

A read-only reference to the indexed item.

Accessor to elements at a given index. This operator can also be used to access and modify the sub-array stored at the in_nIndex position.

Parameters:

in_nIndex

Index in this zero-based array. The index must be smaller than the number of elements in the array, otherwise the results are unpredicted.

Returns:

A reference to the indexed item.

Example:

            // Demonstrates how to access/modify the CDataArray2D<T> sub-arrays from the CDataArray2D<T>::Accessor class.
            using namespace XSI;

            XSIPLUGINCALLBACK CStatus UnionArrayNode_Evaluate( ICENodeContext& in_ctxt )
            {
                // The current output port being evaluated...
                ULONG out_portID = in_ctxt.GetEvaluatedOutputPortID( );

                switch( out_portID )
                {
                    case ID_OUT_result:
                    {
                        // Get the output port array ...
                        CDataArray2DLong outData( in_ctxt );

                        // Get the input data buffers for each port
                        CDataArray2DLong InArray1Data( in_ctxt, ID_IN_InArray1 );
                        CDataArray2DLong InArray2Data( in_ctxt, ID_IN_InArray2 );

                        // We need a CIndexSet to iterate over the data
                        CIndexSet indexSet( in_ctxt );
                        for(CIndexSet::Iterator it = indexSet.Begin(); it.HasNext(); it.Next())
                        {
                            CDataArray2DLong::Accessor a1 = InArray1Data[it];
                            CDataArray2DLong::Accessor a2 = InArray2Data[it];

                            // Sort arrays in place
                            ULONG nCount1 = a1.GetCount();
                            ULONG nCount2 = a2.GetCount();
                            std::sort( &a1[0], &a1[0]+nCount1 );
                            std::sort( &a2[0], &a2[0]+nCount2 );

                            // Resize out to max array
                            CDataArray2DLong::Accessor out = outData.Resize( it, nCount1 + nCount2 );

                            // Union of a1 + a2
                            LONG* pLast = std::set_union( &a1[0], &a1[0]+nCount1, &a2[0], &a2[0]+nCount2, &out[0]);

                            // resize out with number of elements in union
                            ULONG nOutCount = (ULONG)(pLast - &out[0]);
                            outData.Resize( it, nOutCount );
                        }
                    }
                    break;
                };

                return CStatus::OK;
            }

• xsi_dataarray2D.h