CClusterPropertyElementArray Class Reference

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Detailed Description

An array of cluster property elements in a ClusterProperty object.

The cluster property maps the cluster element indices to property values (such as RGB vertex color). The value of the element in a cluster property element array is the cluster property value.

You can set elements using CClusterPropertyElementArray::PutItems and this is accessible from an operator. Unlike CClusterElementArray, a CClusterPropertyElementArray object allows editing of element values.

The following lists all cluster properties along with their data type values returned through CClusterPropertyElementArray::GetItem:

• Vertex color property: array of RGBA values

• Envelope weight property: array containing the weight value for each deformer

• Weight map property: array of only 1 value which is the weight value

• UV property: array of UVW values

Warning:

This specialized array is returned by ClusterProperty::GetElements, it is not meant to be created and modified in user-defined functions. If you want to add and remove arbitrary items to a collection, you must use a CRefArray instead.

See also:

ClusterProperty, Cluster

Example:

        using namespace XSI;
        Application app;
        Model root = app.GetActiveSceneRoot();

        X3DObject myCube;
        root.AddGeometry( L"Cube", L"MeshSurface", L"", myCube );

        // install the texture support object
        CValueArray args(4);
        args[0] = CValue( CString(L"Image") );
        args[1] = CValue(myCube);
        args[2] = CValue((short)1);
        args[3] = CValue(false);

        CStatus st;
        CValue outArg;
        st = app.ExecuteCommand( L"BlendInPresets", args, outArg );
        if ( st.GetCode() != CStatus::OK )
        {
            app.LogMessage( L"BlendInPresets failed" );
            return;
        }

        args[0] = CValue(myCube);
        args[1] = CValue((LONG)siTxtUV);
        args[2] = CValue((LONG)siTxtDefaultSpherical);
        args[3] = CValue(CString(L"Texture_Support"));

        st = app.ExecuteCommand( L"CreateTextureSupport", args, outArg );
        if ( st.GetCode() != CStatus::OK )
        {
            app.LogMessage( L"CreateTextureSupport failed" );
            return;
        }

        // get the sample point cluster and print out its UVW values
        Geometry geom(myCube.GetActivePrimitive().GetGeometry());

        CRefArray samplePoints;
        geom.GetClusters().Filter(siSampledPointCluster, CStringArray(), L"",
            samplePoints );

        Cluster cluster(samplePoints.GetItem(0));
        ClusterProperty UVWProp(myCube.GetMaterial().GetCurrentUV());

        CClusterPropertyElementArray uvwElementArray(UVWProp.GetElements());

        CDoubleArray uvwArray(uvwElementArray.GetArray());

        for ( LONG i=0; i< uvwArray.GetCount(); i += uvwElementArray.GetValueSize())
        {
            app.LogMessage( L"UVW: " +
                CValue(uvwArray[i]).GetAsText() + L"," +
                CValue(uvwArray[i+1]).GetAsText() + L"," +
                CValue(uvwArray[i+2]).GetAsText() );
        }

#include <xsi_clusterproperty.h>

List of all members.

Public Member Functions
	CClusterPropertyElementArray ()
	CClusterPropertyElementArray (const CClusterPropertyElementArray &in_array)
virtual	~CClusterPropertyElementArray ()
CClusterPropertyElementArray &	operator= (const CClusterPropertyElementArray &in_array)
CDoubleArray	GetArray () const
CStatus	PutArray (const CDoubleArray &in_values)
LONG	GetCount () const
CDoubleArray	GetItem (LONG in_index) const
CStatus	PutItem (LONG in_index, const CDoubleArray &in_values)
CDoubleArray	GetItemsByIndex (const CLongArray &in_indices) const
CStatus	PutItemsByIndex (const CLongArray &in_indices, const CDoubleArray &in_values)
LONG	GetValueSize () const

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Constructor & Destructor Documentation

CClusterPropertyElementArray

(

)

Default constructor

CClusterPropertyElementArray

(

const CClusterPropertyElementArray &

in_array

)

Copy constructor.

Parameters:

in_array

constant CClusterPropertyElementArray object.

virtual ~CClusterPropertyElementArray

(

)

[virtual]

Default destructor

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Member Function Documentation

CClusterPropertyElementArray& operator=

(

const CClusterPropertyElementArray &

in_array

)

Creates an array from a reference object.

Parameters:

in_array

constant CClusterPropertyElementArray object.

Returns:

The new CClusterPropertyElementArray object.

CDoubleArray GetArray

(

)

const

Returns an array of element values which contains CClusterPropertyElementArray::GetCount() * CClusterPropertyElementArray::GetValueSize() double values. The array is laid out so that all values for an element are contiguous.

Returns:

Array of element values

CStatus PutArray

(

const CDoubleArray &

in_values

)

Sets the values on the underlying ClusterProperty.

Parameters:

in_values

Array of element values

Returns:

CStatus::OK success

CStatus::Fail failure

LONG GetCount

(

)

const

Returns the number of cluster element values

Returns:

The number of cluster element values.

CDoubleArray GetItem

(

LONG

in_index

)

const

Returns the cluster element values at a given index.

Parameters:

in_index

Element index.

Returns:

Array of element values. The array will be empty if the index is greater than the number of elements or smaller than zero.

CStatus PutItem	(	LONG	in_index,
		const CDoubleArray &	in_values
	)

Sets the cluster element values at a given index.

Parameters:

in_index	Element index.
in_values	Array of element values.

Returns:

CStatus::OK success

CStatus::Fail failure

CStatus::InvalidArgument The index is greater than the number of elements or smaller than zero.

CDoubleArray GetItemsByIndex

(

const CLongArray &

in_indices

)

const

Returns cluster element values by indices.

Parameters:

in_indices

Array of indices

Returns:

Array of element values. The array will be empty if an index is greater than the number of elements or smaller than zero.

CStatus PutItemsByIndex	(	const CLongArray &	in_indices,
		const CDoubleArray &	in_values
	)

Sets cluster element values by indices.

Parameters:

in_indices	Array of indices
in_values	Array of element values

Returns:

CStatus::OK success

CStatus::Fail failure

CStatus::InvalidArgument If an index is greater than the number of elements or smaller than zero.

LONG GetValueSize

(

)

const

Returns the number of values per element in the cluster. For instance, a uvw cluster property returns 3(uvw) and in the case of a vertex color cluster property it returns 4(rgba).

Returns:

The number of values per element.

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The documentation for this class was generated from the following file:

• xsi_clusterproperty.h