Refinement Relationships

Concept Kernel::AreOrderedAlongLine_2

AdaptableFunctor (with three arguments)

Concept Kernel::AreOrderedAlongLine_3

AdaptableFunctor (with three arguments)

Concept Kernel::AreParallel_2

AdaptableFunctor (with two arguments)

Concept Kernel::AreParallel_3

AdaptableFunctor (with two arguments)

Concept Kernel::AreStrictlyOrderedAlongLine_2

AdaptableFunctor (with three arguments)

Concept Kernel::AreStrictlyOrderedAlongLine_3

AdaptableFunctor (with three arguments)

Concept Kernel::Assign_2

AdaptableFunctor (with two arguments)

Concept Kernel::Assign_3

AdaptableFunctor (with two arguments)

Concept Kernel::BoundedSide_2

AdaptableFunctor (with two arguments)

Concept Kernel::BoundedSide_3

AdaptableFunctor (with two arguments)

Concept Kernel::CartesianConstIterator_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::CartesianConstIterator_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Circle_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Circle_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Collinear_2

AdaptableFunctor (with three arguments)

Concept Kernel::Collinear_3

AdaptableFunctor (with three arguments)

Concept Kernel::CollinearAreOrderedAlongLine_2

AdaptableFunctor (with three arguments)

Concept Kernel::CollinearAreOrderedAlongLine_3

AdaptableFunctor (with three arguments)

Concept Kernel::CollinearAreStrictlyOrderedAlongLine_2

AdaptableFunctor (with three arguments)

Concept Kernel::CollinearAreStrictlyOrderedAlongLine_3

AdaptableFunctor (with three arguments)

Concept Kernel::CollinearHasOn_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareAngleWithXAxis_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareDistance_2

AdaptableFunctor (with three arguments)

Concept Kernel::CompareDistance_3

AdaptableFunctor (with three arguments)

Concept Kernel::ComparePowerDistance_2

AdaptableFunctor (with three arguments)

Concept Kernel::ComparePowerDistance_3

AdaptableFunctor (with three arguments)

Concept Kernel::CompareSignedDistanceToLine_2

AdaptableFunctor (with four arguments)

Concept Kernel::CompareSlope_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareSlope_3

AdaptableFunctor (with two arguments)

Concept Kernel::CompareSquaredDistance_2

AdaptableFunctor (with three arguments)

Concept Kernel::CompareSquaredDistance_3

AdaptableFunctor (with three arguments)

Concept Kernel::CompareSquaredRadius_3

AdaptableFunctor (with three arguments)

Concept Kernel::CompareWeightedSquaredRadius_3

AdaptableFunctor

Concept Kernel::CompareX_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareX_3

AdaptableFunctor (with two arguments)

Concept Kernel::CompareXAtY_2

AdaptableFunctor (with three arguments)

Concept Kernel::CompareXY_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareXY_3

AdaptableFunctor (with two arguments)

Concept Kernel::CompareXYZ_3

AdaptableFunctor (with two arguments)

Concept Kernel::CompareY_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareY_3

AdaptableFunctor (with two arguments)

Concept Kernel::CompareYAtX_2

AdaptableFunctor (with three arguments)

Concept Kernel::CompareYX_2

AdaptableFunctor (with two arguments)

Concept Kernel::CompareZ_3

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeA_2

AdaptableFunctor

Concept Kernel::ComputeA_3

AdaptableFunctor

Concept Kernel::ComputeApproximateAngle_3

AdaptableFunctor

Concept Kernel::ComputeApproximateArea_3

AdaptableFunctor

Concept Kernel::ComputeApproximateDihedralAngle_3

AdaptableFunctor

Concept Kernel::ComputeApproximateSquaredLength_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeArea_2

AdaptableFunctor (with one argument)

Concept Kernel::ComputeArea_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeAreaDividedByPi_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeB_2

AdaptableFunctor

Concept Kernel::ComputeB_3

AdaptableFunctor

Concept Kernel::ComputeC_2

AdaptableFunctor

Concept Kernel::ComputeC_3

AdaptableFunctor

Concept Kernel::ComputeD_3

AdaptableFunctor

Concept Kernel::ComputeDeterminant_2

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeDeterminant_3

AdaptableFunctor (with three arguments)

Concept Kernel::ComputeDx_2

AdaptableFunctor

Concept Kernel::ComputeDx_3

AdaptableFunctor

Concept Kernel::ComputeDy_2

AdaptableFunctor

Concept Kernel::ComputeDy_3

AdaptableFunctor

Concept Kernel::ComputeDz_3

AdaptableFunctor

Concept Kernel::ComputeHw_2

AdaptableFunctor

Concept Kernel::ComputeHw_3

AdaptableFunctor

Concept Kernel::ComputeHx_2

AdaptableFunctor

Concept Kernel::ComputeHx_3

AdaptableFunctor

Concept Kernel::ComputeHy_2

AdaptableFunctor

Concept Kernel::ComputeHy_3

AdaptableFunctor

Concept Kernel::ComputeHz_3

AdaptableFunctor

Concept Kernel::ComputeLInfinityDistance_2

AdaptableFunctor (with 2 arguments)

Concept Kernel::ComputeLInfinityDistance_3

AdaptableFunctor

Concept Kernel::ComputePowerDistanceToPowerSphere_3

AdaptableFunctor (with five arguments)

Concept Kernel::ComputePowerProduct_2

AdaptableFunctor (with two arguments)

Concept Kernel::ComputePowerProduct_3

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeScalarProduct_2

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeScalarProduct_3

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeSquaredArea_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeSquaredDistance_2

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeSquaredDistance_3

AdaptableFunctor (with two arguments)

Concept Kernel::ComputeSquaredLength_2

AdaptableFunctor (with one argument)

Concept Kernel::ComputeSquaredLength_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeSquaredLengthDividedByPiSquare_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeSquaredRadius_2

AdaptableFunctor (with one argument)

Concept Kernel::ComputeSquaredRadius_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeSquaredRadiusSmallestOrthogonalCircle_2

AdaptableFunctor

Concept Kernel::ComputeSquaredRadiusSmallestOrthogonalSphere_3

AdaptableFunctor

Concept Kernel::ComputeVolume_3

AdaptableFunctor (with one argument)

Concept Kernel::ComputeWeight_2

AdaptableFunctor

Concept Kernel::ComputeWeight_3

AdaptableFunctor

Concept Kernel::ComputeX_2

AdaptableFunctor

Concept Kernel::ComputeX_3

AdaptableFunctor

Concept Kernel::ComputeXmax_2

AdaptableFunctor

Concept Kernel::ComputeXmax_3

AdaptableFunctor

Concept Kernel::ComputeXmin_2

AdaptableFunctor

Concept Kernel::ComputeXmin_3

AdaptableFunctor

Concept Kernel::ComputeY_2

AdaptableFunctor

Concept Kernel::ComputeY_3

AdaptableFunctor

Concept Kernel::ComputeYAtX_2

AdaptableFunctor

Concept Kernel::ComputeYmax_2

AdaptableFunctor

Concept Kernel::ComputeYmax_3

AdaptableFunctor

Concept Kernel::ComputeYmin_2

AdaptableFunctor

Concept Kernel::ComputeYmin_3

AdaptableFunctor

Concept Kernel::ComputeZ_3

AdaptableFunctor

Concept Kernel::ComputeZmax_3

AdaptableFunctor

Concept Kernel::ComputeZmin_3

AdaptableFunctor

Concept Kernel::ConstructBarycenter_2

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructBarycenter_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructBaseVector_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructBbox_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructBbox_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructBisector_2

AdaptableFunctor

Concept Kernel::ConstructBisector_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructCartesianConstIterator_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructCartesianConstIterator_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructCenter_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructCenter_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructCentroid_2

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructCentroid_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructCircle_2

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructCircle_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructCircumcenter_2

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructCircumcenter_3

AdaptableFunctor (with four arguments)

Concept Kernel::ConstructCrossProductVector_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructDifferenceOfVectors_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructDifferenceOfVectors_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructDirection_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructDirection_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructDividedVector_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructDividedVector_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructEquidistantLine_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructIsoCuboid_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructIsoRectangle_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructLiftedPoint_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructLine_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructLine_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructMaxVertex_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructMaxVertex_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructMidpoint_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructMidpoint_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructMinVertex_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructMinVertex_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructNormal_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructObject_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructObject_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeCircle_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeDirection_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeDirection_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeLine_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeLine_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositePlane_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeRay_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeRay_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeSegment_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeSegment_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeSphere_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeTriangle_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeVector_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOppositeVector_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructOrthogonalVector_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructPerpendicularDirection_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPerpendicularLine_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPerpendicularLine_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPerpendicularPlane_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPerpendicularVector_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPlane_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPoint_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructPoint_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructPointOn_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructPointOn_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructProjectedPoint_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructProjectedPoint_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructProjectedXYPoint_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructRadicalAxis_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructRadicalLine_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructRadicalPlane_3

AdaptableFunctor (with two argument)

Concept Kernel::ConstructRay_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructRay_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructScaledVector_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructScaledVector_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructSecondPoint_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructSecondPoint_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructSegment_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructSegment_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructSource_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructSource_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructSphere_3

AdaptableFunctor (with four arguments)

Concept Kernel::ConstructSumOfVectors_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructSumOfVectors_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructSupportingPlane_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructTarget_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructTarget_3

AdaptableFunctor (with one argument)

Concept Kernel::ConstructTetrahedron_3

AdaptableFunctor (with four arguments)

Concept Kernel::ConstructTranslatedPoint_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructTranslatedPoint_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructTriangle_2

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructTriangle_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructUnitNormal_3

AdaptableFunctor (with three arguments)

Concept Kernel::ConstructVector_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructVector_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructVertex_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructVertex_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructWeightedCircumcenter_2

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructWeightedCircumcenter_3

AdaptableFunctor (with two arguments)

Concept Kernel::ConstructWeightedPoint_2

AdaptableFunctor (with one argument)

Concept Kernel::ConstructWeightedPoint_3

AdaptableFunctor (with one argument)

Concept Kernel::Coplanar_3

AdaptableFunctor (with four arguments)

Concept Kernel::CoplanarOrientation_3

AdaptableFunctor (with four arguments)

Concept Kernel::CoplanarSideOfBoundedCircle_3

AdaptableFunctor (with four arguments)

Concept Kernel::CounterclockwiseInBetween_2

AdaptableFunctor (with three arguments)

Concept Kernel::Direction_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Direction_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::DoIntersect_2

AdaptableFunctor (with two arguments)

Concept Kernel::DoIntersect_3

AdaptableFunctor (with two arguments)

Concept Kernel::Equal_2

AdaptableFunctor (with two arguments)

Concept Kernel::Equal_3

AdaptableFunctor (with two arguments)

Concept Kernel::EqualX_2

AdaptableFunctor (with two arguments)

Concept Kernel::EqualX_3

AdaptableFunctor (with two arguments)

Concept Kernel::EqualXY_3

AdaptableFunctor (with two arguments)

Concept Kernel::EqualY_2

AdaptableFunctor (with two arguments)

Concept Kernel::EqualY_3

AdaptableFunctor (with two arguments)

Concept Kernel::EqualZ_3

AdaptableFunctor (with two arguments)

Concept Kernel::HasOn_2

AdaptableFunctor (with two arguments)

Concept Kernel::HasOn_3

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnBoundary_2

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnBoundary_3

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnBoundedSide_2

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnBoundedSide_3

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnNegativeSide_2

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnNegativeSide_3

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnPositiveSide_2

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnPositiveSide_3

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnUnboundedSide_2

AdaptableFunctor (with two arguments)

Concept Kernel::HasOnUnboundedSide_3

AdaptableFunctor (with two arguments)

Concept Kernel::Intersect_2

AdaptableFunctor (with two arguments)

Concept Kernel::Intersect_3

AdaptableFunctor (with two or three arguments)

Concept Kernel::IsDegenerate_2

AdaptableFunctor (with one argument)

Concept Kernel::IsDegenerate_3

AdaptableFunctor (with one argument)

Concept Kernel::IsHorizontal_2

AdaptableFunctor (with one argument)

Concept Kernel::IsoCuboid_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::IsoRectangle_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::IsVertical_2

AdaptableFunctor (with one argument)

Concept Kernel::LeftTurn_2

AdaptableFunctor (with three arguments)

Concept Kernel::LessDistanceToPoint_2

AdaptableFunctor (with three arguments)

Concept Kernel::LessDistanceToPoint_3

AdaptableFunctor (with three arguments)

Concept Kernel::LessRotateCCW_2

AdaptableFunctor (with three arguments)

Concept Kernel::LessSignedDistanceToLine_2

AdaptableFunctor (with four arguments)

Concept Kernel::LessSignedDistanceToPlane_3

AdaptableFunctor (with three arguments)

Concept Kernel::LessX_2

AdaptableFunctor (with two arguments)

Concept Kernel::LessX_3

AdaptableFunctor (with two arguments)

Concept Kernel::LessXY_2

AdaptableFunctor (with two arguments)

Concept Kernel::LessXY_3

AdaptableFunctor (with two arguments)

Concept Kernel::LessXYZ_3

AdaptableFunctor (with two arguments)

Concept Kernel::LessY_2

AdaptableFunctor (with two arguments)

Concept Kernel::LessY_3

AdaptableFunctor (with two arguments)

Concept Kernel::LessYX_2

AdaptableFunctor (with two arguments)

Concept Kernel::Line_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Line_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Object_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Object_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Orientation_2

AdaptableFunctor (with three arguments)

Concept Kernel::Orientation_3

AdaptableFunctor (with four arguments)

Concept Kernel::OrientedSide_2

AdaptableFunctor (with two arguments)

Concept Kernel::OrientedSide_3

AdaptableFunctor (with two arguments)

Concept Kernel::Plane_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Point_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Point_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::PowerSideOfBoundedPowerCircle_2

AdaptableFunctor (with four arguments)

Concept Kernel::PowerSideOfBoundedPowerSphere_3

AdaptableFunctor (with five arguments)

Concept Kernel::PowerSideOfOrientedPowerCircle_2

AdaptableFunctor (with four arguments)

Concept Kernel::PowerSideOfOrientedPowerSphere_3

AdaptableFunctor (with five arguments)

Concept Kernel::Ray_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Ray_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Segment_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Segment_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::SideOfBoundedCircle_2

AdaptableFunctor (with four arguments)

Concept Kernel::SideOfBoundedSphere_3

AdaptableFunctor (with five arguments)

Concept Kernel::SideOfOrientedCircle_2

AdaptableFunctor (with four arguments)

Concept Kernel::SideOfOrientedSphere_3

AdaptableFunctor (with five arguments)

Concept Kernel::Sphere_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Tetrahedron_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Triangle_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Triangle_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Vector_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::Vector_3

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::WeightedPoint_2

CopyConstructible

Assignable

DefaultConstructible

Concept Kernel::WeightedPoint_3

CopyConstructible

Assignable

DefaultConstructible