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/*
 * Copyright (c) 2009-2012 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.jme3.animation;

import com.jme3.export.Savable;
import com.jme3.util.TempVars;

public interface Track extends Savable, Cloneable {

    /**
     * Sets the time of the animation.
     * 
     * Internally, the track will retrieve objects from the control
     * and modify them according to the properties of the channel and the
     * given parameters.
     * 
     * @param time The time in the animation
     * @param weight The weight from 0 to 1 on how much to apply the track 
     * @param control The control which the track should effect
     * @param channel The channel which the track should effect
     */
    public void setTime(float time, float weight, AnimControl control, AnimChannel channel, TempVars vars);

    /**
     * @return the length of the track
     */
    public float getLength();

    /**
     * This method creates a clone of the current object.
     * @return a clone of the current object
     */
    public Track clone();
    
    /**
     * Get the times in seconds for all keyframes.
     * 
     * All keyframe times should be between 0.0 and {@link #getLength() length}.
     * Modifying the provided array is not allowed, as it may corrupt internal
     * state.
     * 
     * @return the keyframe times
     */
    public float[] getKeyFrameTimes();
}