\returns the \c x coefficient */

\returns the \c y coefficient */

\returns the \c w coefficient */

\returns the \c w coefficient */

\sa MatrixBase::setIdentity() */

Only plain matrices/arrays, not expressions, may be resized; therefore the only useful resize methods are * Matrix::resize() and Array::resize()

\returns the \c z coefficient */

\returns a read-only expression of the linear part of the transformation */

\returns the stored value at index \a key * If the value does not exist, then the value \a defaultValue is returned without any insertion. */

\returns the dot product of \c *this and \a other * Geometrically speaking, the dot product of two unit quaternions * corresponds to the cosin

Sets all coefficients to zero. */

\returns a read-only expression of the translation vector of the transformation */

\returns a const pointer to the data array of this matrix */

Swaps the values of \c *this and \a other. * Overloaded for performance: this version performs a \em shallow swap by swaping pointers and attrib

\returns the \c x coefficient */

\sa MatrixBase::conjugate() */

\returns a constant reference to the unit normal vector of the plane, which corresponds * to the linear part of the implicit equation. */

\returns the \c y coefficient */

\returns a const expression of the diagonal coefficients */

\return the equivalent permutation matrix */

\returns an expression of the coefficient-wise sine of *this. * * Example: \include Cwise_sin.cpp * Output: \verbinclude Cwise_sin.out * * \

\returns the \c z coefficient */

\returns the norm of the quaternion's coefficients * \sa QuaternionBase::squaredNorm(), MatrixBase::norm() */

\returns the size of a side of the respective square matrix, i.e., the number of indices */

\brief Retruns the y-translation by value. **/

\brief Retruns the z-translation by value. **/

\returns a constant reference to the unit normal vector of the plane, which corresponds * to the linear part of the implicit equation. */