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module com {  module sun {  module star {  module geometry {

/** Interface defining an arbitrary bijective mapping from R^2 to R^2.<p>

    This interface provides methods to define an arbitrary bijective
    mapping from R^2 to R^2, i.e. from the two-dimensional space of
    real numbers onto itself, as is representable by the
    double floating point type. The mapping must be
    bijective, i.e. map a pair of real numbers to exactly one other
    pair of real numbers and vice versa, to facilitate a working
    inverse. Bijectiveness also implies completeness, i.e. for every
    pair of real numbers there must be another pair that is mapped
    upon them.<p>

    @since OOo 2.0
 */
interface XMapping2D : ::com::sun::star::uno::XInterface
{
    /** Forward 2D mapping function
     */
    RealPoint2D     map( [in] RealPoint2D aPoint );


    /** Inverse 2D mapping function.<p>

        The following invariant must hold:
        <code>map(mapInverse(p))=p</code>. This effectively rules out
        non-bijective mappings.<p>
     */
    RealPoint2D     mapInverse( [in] RealPoint2D aPoint );
};

}; }; }; };

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