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/*
 * glTF JSON model
 * 
 * Do not modify this class. It is automatically generated
 * with JsonModelGen (https://github.com/javagl/JsonModelGen)
 * Copyright (c) 2016-2021 Marco Hutter - http://www.javagl.de
 */

package de.javagl.jgltf.impl.v2;

import java.util.ArrayList;
import java.util.List;


/**
 * Joints and matrices defining a skin. 
 * 
 * Auto-generated for skin.schema.json 
 * 
 */
public class Skin
    extends GlTFChildOfRootProperty
{

    /**
     * The index of the accessor containing the floating-point 4x4 
     * inverse-bind matrices. (optional) 
     * 
     */
    private Integer inverseBindMatrices;
    /**
     * The index of the node used as a skeleton root. (optional) 
     * 
     */
    private Integer skeleton;
    /**
     * Indices of skeleton nodes, used as joints in this skin. (required)
 
     * Minimum number of items: 1
 
     * Array elements:
 
     *   The elements of this array (optional)
 
     *   Minimum: 0 (inclusive) 
     * 
     */
    private List joints;

    /**
     * The index of the accessor containing the floating-point 4x4 
     * inverse-bind matrices. (optional) 
     * 
     * @param inverseBindMatrices The inverseBindMatrices to set
     * 
     */
    public void setInverseBindMatrices(Integer inverseBindMatrices) {
        if (inverseBindMatrices == null) {
            this.inverseBindMatrices = inverseBindMatrices;
            return ;
        }
        this.inverseBindMatrices = inverseBindMatrices;
    }

    /**
     * The index of the accessor containing the floating-point 4x4 
     * inverse-bind matrices. (optional) 
     * 
     * @return The inverseBindMatrices
     * 
     */
    public Integer getInverseBindMatrices() {
        return this.inverseBindMatrices;
    }

    /**
     * The index of the node used as a skeleton root. (optional) 
     * 
     * @param skeleton The skeleton to set
     * 
     */
    public void setSkeleton(Integer skeleton) {
        if (skeleton == null) {
            this.skeleton = skeleton;
            return ;
        }
        this.skeleton = skeleton;
    }

    /**
     * The index of the node used as a skeleton root. (optional) 
     * 
     * @return The skeleton
     * 
     */
    public Integer getSkeleton() {
        return this.skeleton;
    }

    /**
     * Indices of skeleton nodes, used as joints in this skin. (required)
 
     * Minimum number of items: 1
 
     * Array elements:
 
     *   The elements of this array (optional)
 
     *   Minimum: 0 (inclusive) 
     * 
     * @param joints The joints to set
     * @throws NullPointerException If the given value is null
     * @throws IllegalArgumentException If the given value does not meet
     * the given constraints
     * 
     */
    public void setJoints(List joints) {
        if (joints == null) {
            throw new NullPointerException((("Invalid value for joints: "+ joints)+", may not be null"));
        }
        if (joints.size()< 1) {
            throw new IllegalArgumentException("Number of joints elements is < 1");
        }
        for (Integer jointsElement: joints) {
            if (jointsElement< 0) {
                throw new IllegalArgumentException("jointsElement < 0");
            }
        }
        this.joints = joints;
    }

    /**
     * Indices of skeleton nodes, used as joints in this skin. (required)
 
     * Minimum number of items: 1
 
     * Array elements:
 
     *   The elements of this array (optional)
 
     *   Minimum: 0 (inclusive) 
     * 
     * @return The joints
     * 
     */
    public List getJoints() {
        return this.joints;
    }

    /**
     * Add the given joints. The joints of this instance will be replaced 
     * with a list that contains all previous elements, and additionally the 
     * new element. 
     * 
     * @param element The element
     * @throws NullPointerException If the given element is null
     * 
     */
    public void addJoints(Integer element) {
        if (element == null) {
            throw new NullPointerException("The element may not be null");
        }
        List oldList = this.joints;
        List newList = new ArrayList();
        if (oldList!= null) {
            newList.addAll(oldList);
        }
        newList.add(element);
        this.joints = newList;
    }

    /**
     * Remove the given joints. The joints of this instance will be replaced 
     * with a list that contains all previous elements, except for the 
     * removed one. 
     * 
     * @param element The element
     * @throws NullPointerException If the given element is null
     * 
     */
    public void removeJoints(Integer element) {
        if (element == null) {
            throw new NullPointerException("The element may not be null");
        }
        List oldList = this.joints;
        List newList = new ArrayList();
        if (oldList!= null) {
            newList.addAll(oldList);
        }
        newList.remove(element);
        this.joints = newList;
    }

}