66 lines
2.5 KiB
Java
66 lines
2.5 KiB
Java
/*
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* Copyright (c) 2011, Swedish Institute of Computer Science. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer. 2. Redistributions in
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* binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution. 3. Neither the name of the
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* Institute nor the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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package org.contikios.cooja.interfaces;
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/**
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* Directional antenna.
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*
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* @see MRM
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* @author Fredrik Osterlind
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*/
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public interface DirectionalAntennaRadio {
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/**
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* @return Current direction (radians). Typically direction 0 has the maximum
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* relative gain.
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*
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* @see #getRelativeGain(double)
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*/
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public double getDirection();
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/**
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* Relative gain (dB) as compared to an omnidirectional antenna.
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* Note that the given angle is relative to the current direction!
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*
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* @see #getDirection()
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* @param radians Angle relative to current direction
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* @param distance Distance from antenna
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* @return
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*/
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public double getRelativeGain(double radians, double distance);
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public void addDirectionChangeListener(DirectionChangeListener l);
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public void removeDirectionChangeListener(DirectionChangeListener l);
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public interface DirectionChangeListener {
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public void newDirection(DirectionalAntennaRadio radio, double direction);
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}
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}
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