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package org.rcsb.mmtf.dataholders;

import java.io.Serializable;

/**
 * The transformation needed for generation of biological assemblies
 * from the contents of a PDB/mmCIF file. It contains both the actual
 * transformation (rotation+translation) and the chain identifier to
 * which it should be applied.
 *
 * @author Anthony Bradley
 */
public class BioAssemblyTransformation implements Serializable {


	/** Serial id for this version of the format. */
	private static final long serialVersionUID = -3874846890822791985L;

	/** The indices of the chains this bioassembly references. */
	private int[] chainIndexList;

	/** The 4x4 matrix transformation specifying a rotation and a translation. 
	 * 	Stored linearly in row major order.*/
	private double[] matrix;

	/**
	 * Gets the 4x4 matrix transformation specifying a rotation and a translation.
	 * Stored linearly in row major order.
	 * @return the transformation
	 */
	public double[] getMatrix() {
		return matrix;
	}

	/**
	 * Sets the 4x4 matrix transformation specifying a rotation and a translation.
	 * Stored linearly in row major order.
	 * @param transformation the new transformation
	 */
	public void setMatrix(double[] transformation) {
		this.matrix = transformation;
	}

	/**
	 * Gets the indices of the chains this bioassembly refers to.
	 *
	 * @return a list of integers indicating the indices (zero indexed) of the chains this bioassembly refers to.
	 */
	public int[] getChainIndexList() {
		return chainIndexList;
	}

	/**
	 * Sets the chain id.
	 *
	 * @param  inputChainId a list of integers indicating the indices (zero indexed) of the chains this bioassembly refers to.
	 */
	public void setChainIndexList(int[] inputChainId) {
		this.chainIndexList = inputChainId;
	}
}