GEO_StandardAttribs.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 __GEO_StandardAttribs_h__
#define __GEO_StandardAttribs_h__

#include "GEO_API.h"

#include <GA/GA_Defaults.h>
#include <GA/GA_Handle.h>
#include <GA/GA_Names.h>
#include <GEO/GEO_Detail.h>

/// Utilities for the standard attributes defined in GA_Names.
namespace GEO_StandardAttribs
{
/// Finds or creates a 3@transform attribute with the appropriate type info and
/// default value.
inline GA_RWHandleM3D
createTransform3(GEO_Detail &detail, GA_AttributeOwner owner = GA_ATTRIB_POINT)
{
    GA_RWHandleM3D attrib = detail.findFloatTuple(
            owner, GA_Names::transform, UT_Matrix3::tuple_size);
    if (!attrib.isValid())
    {
        GA_Storage storage = GA_STORE_REAL32;
        if (detail.getPreferredPrecision() == GA_PRECISION_64)
            storage = GA_STORE_REAL64;

        attrib = detail.addFloatTuple(
                owner, GA_Names::transform, UT_Matrix3::tuple_size,
                GA_Defaults::matrix3(),
                /*creation_args=*/nullptr,
                /*attribute_options=*/nullptr,
                storage);

    }

    // Always force the type info on existing attributes.
    attrib->setTypeInfo(GA_TypeInfo::GA_TYPE_TRANSFORM);

    return attrib;
}

/// Finds or creates a 4@localtransform attribute with the appropriate type info and
/// default value.
inline GA_RWHandleM4D
createLocalTransform4(GEO_Detail &detail, GA_AttributeOwner owner = GA_ATTRIB_POINT)
{
    GA_RWHandleM4D attrib = detail.findFloatTuple(
            owner, GA_Names::localtransform, UT_Matrix4::tuple_size);
    if (!attrib.isValid())
    {
        GA_Storage storage = GA_STORE_REAL32;
        if (detail.getPreferredPrecision() == GA_PRECISION_64)
            storage = GA_STORE_REAL64;

        attrib = detail.addFloatTuple(
                owner, GA_Names::localtransform, UT_Matrix4::tuple_size,
                GA_Defaults::matrix4(),
                /*creation_args=*/nullptr,
                /*attribute_options=*/nullptr,
                storage);
    }

    // Always force the type info on existing attributes.
    attrib->setTypeInfo(GA_TypeInfo::GA_TYPE_TRANSFORM);

    return attrib;
}
}

#endif