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bug #997: add missing evaluators for m.lazyProduct(v.homogeneous())

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This commit is contained in:
Gael Guennebaud
2015-06-08 15:43:41 +02:00
parent e6c5723dcd
commit 8f031a3cee
2 changed files with 77 additions and 0 deletions
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62
Eigen/src/Geometry/Homogeneous.h
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@@ -365,6 +365,37 @@ struct generic_product_impl<Homogeneous<LhsArg,Horizontal>, Rhs, HomogeneousShap
}
};
template<typename Lhs,typename Rhs>
struct homogeneous_right_product_refactoring_helper
{
enum {
Dim = Lhs::ColsAtCompileTime,
Rows = Lhs::RowsAtCompileTime
};
typedef typename Rhs::template ConstNRowsBlockXpr<Dim>::Type LinearBlockConst;
typedef typename remove_const<LinearBlockConst>::type LinearBlock;
typedef typename Rhs::ConstRowXpr ConstantColumn;
typedef Replicate<const ConstantColumn,Rows,1> ConstantBlock;
typedef Product<Lhs,LinearBlock,LazyProduct> LinearProduct;
typedef CwiseBinaryOp<internal::scalar_sum_op<typename Lhs::Scalar>, const LinearProduct, const ConstantBlock> Xpr;
};
template<typename Lhs, typename Rhs, int ProductTag>
struct product_evaluator<Product<Lhs, Rhs, LazyProduct>, ProductTag, HomogeneousShape, DenseShape>
: public evaluator<typename homogeneous_right_product_refactoring_helper<typename Lhs::NestedExpression,Rhs>::Xpr>
{
typedef Product<Lhs, Rhs, LazyProduct> XprType;
typedef homogeneous_right_product_refactoring_helper<typename Lhs::NestedExpression,Rhs> helper;
typedef typename helper::ConstantBlock ConstantBlock;
typedef typename helper::Xpr RefactoredXpr;
typedef evaluator<RefactoredXpr> Base;
EIGEN_DEVICE_FUNC explicit product_evaluator(const XprType& xpr)
: Base( xpr.lhs().nestedExpression() .lazyProduct( xpr.rhs().template topRows<helper::Dim>(xpr.lhs().nestedExpression().cols()) )
+ ConstantBlock(xpr.rhs().row(xpr.rhs().rows()-1),xpr.lhs().rows(), 1) )
{}
};
template<typename Lhs, typename RhsArg, int ProductTag>
struct generic_product_impl<Lhs, Homogeneous<RhsArg,Vertical>, DenseShape, HomogeneousShape, ProductTag>
{
@@ -375,6 +406,37 @@ struct generic_product_impl<Lhs, Homogeneous<RhsArg,Vertical>, DenseShape, Homog
}
};
template<typename Lhs,typename Rhs>
struct homogeneous_left_product_refactoring_helper
{
enum {
Dim = Rhs::RowsAtCompileTime,
Cols = Rhs::ColsAtCompileTime
};
typedef typename Lhs::template ConstNColsBlockXpr<Dim>::Type LinearBlockConst;
typedef typename remove_const<LinearBlockConst>::type LinearBlock;
typedef typename Lhs::ConstColXpr ConstantColumn;
typedef Replicate<const ConstantColumn,1,Cols> ConstantBlock;
typedef Product<LinearBlock,Rhs,LazyProduct> LinearProduct;
typedef CwiseBinaryOp<internal::scalar_sum_op<typename Lhs::Scalar>, const LinearProduct, const ConstantBlock> Xpr;
};
template<typename Lhs, typename Rhs, int ProductTag>
struct product_evaluator<Product<Lhs, Rhs, LazyProduct>, ProductTag, DenseShape, HomogeneousShape>
: public evaluator<typename homogeneous_left_product_refactoring_helper<Lhs,typename Rhs::NestedExpression>::Xpr>
{
typedef Product<Lhs, Rhs, LazyProduct> XprType;
typedef homogeneous_left_product_refactoring_helper<Lhs,typename Rhs::NestedExpression> helper;
typedef typename helper::ConstantBlock ConstantBlock;
typedef typename helper::Xpr RefactoredXpr;
typedef evaluator<RefactoredXpr> Base;
EIGEN_DEVICE_FUNC explicit product_evaluator(const XprType& xpr)
: Base( xpr.lhs().template leftCols<helper::Dim>(xpr.rhs().nestedExpression().rows()) .lazyProduct( xpr.rhs().nestedExpression() )
+ ConstantBlock(xpr.lhs().col(xpr.lhs().cols()-1),1,xpr.rhs().cols()) )
{}
};
template<typename Scalar, int Dim, int Mode,int Options, typename RhsArg, int ProductTag>
struct generic_product_impl<Transform<Scalar,Dim,Mode,Options>, Homogeneous<RhsArg,Vertical>, DenseShape, HomogeneousShape, ProductTag>
{