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/*******************************************************************************
 * Copyright (c) 2008, 2019 SWTChart project.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 * yoshitaka - initial API and implementation
 *******************************************************************************/
package org.eclipse.swtchart.internal.compress;

/**
 * A Compressor.
 */
public interface ICompress {

	/**
	 * Gets the compressed X series
	 * 
	 * @return the compressed X series
	 */
	public abstract double[] getCompressedXSeries();

	/**
	 * Gets the compressed Y series
	 * 
	 * @return the compressed Y series
	 */
	public abstract double[] getCompressedYSeries();

	/**
	 * Gets the compressed series indexes
	 * 
	 * @return the compressed series indexes
	 */
	public abstract int[] getCompressedIndexes();

	/**
	 * Sets X series which have to be sorted.
	 * 
	 * @param xSeries
	 *            the X series
	 */
	public abstract void setXSeries(double[] xSeries);

	/**
	 * sets the Y series
	 * 
	 * @param ySeries
	 *            the Y series
	 */
	public abstract void setYSeries(double[] ySeries);

	/**
	 * Ignores the points which are in the same grid as the previous point.
	 * 
	 * @param config
	 *            the configuration for compression
	 * @return true if the compression succeeds
	 */
	public abstract boolean compress(CompressConfig config);
}