How to use

createSkinningMatrices

method

in

com.jme3.animation.Skeleton

/**
 * Creates a skeleton from a bone list. 
 * The root bones are found automatically.
 * <p>
 * Note that using this constructor will cause the bones in the list
 * to have their bind pose recomputed based on their local transforms.
 * 
 * @param boneList The list of bones to manage by this Skeleton
 */
public Skeleton(Bone[] boneList) {
  this.boneList = boneList;
  List<Bone> rootBoneList = new ArrayList<>();
  for (int i = boneList.length - 1; i >= 0; i--) {
    Bone b = boneList[i];
    if (b.getParent() == null) {
      rootBoneList.add(b);
    }
  }
  rootBones = rootBoneList.toArray(new Bone[rootBoneList.size()]);
  createSkinningMatrices();
  for (int i = rootBones.length - 1; i >= 0; i--) {
    Bone rootBone = rootBones[i];
    rootBone.update();
    rootBone.setBindingPose();
  }
}

/**
 * Special-purpose copy constructor.
 * <p>
 * Shallow copies bind pose data from the source skeleton, does not
 * copy any other data.
 * 
 * @param source The source Skeleton to copy from
 */
public Skeleton(Skeleton source) {
  Bone[] sourceList = source.boneList;
  boneList = new Bone[sourceList.length];
  for (int i = 0; i < sourceList.length; i++) {
    boneList[i] = new Bone(sourceList[i]);
  }
  rootBones = new Bone[source.rootBones.length];
  for (int i = 0; i < rootBones.length; i++) {
    rootBones[i] = recreateBoneStructure(source.rootBones[i]);
  }
  createSkinningMatrices();
  for (int i = rootBones.length - 1; i >= 0; i--) {
    rootBones[i].update();
  }
}

@Override
public void read(JmeImporter im) throws IOException {
  InputCapsule input = im.getCapsule(this);
  Savable[] boneRootsAsSav = input.readSavableArray("rootBones", null);
  rootBones = new Bone[boneRootsAsSav.length];
  System.arraycopy(boneRootsAsSav, 0, rootBones, 0, boneRootsAsSav.length);
  Savable[] boneListAsSavable = input.readSavableArray("boneList", null);
  boneList = new Bone[boneListAsSavable.length];
  System.arraycopy(boneListAsSavable, 0, boneList, 0, boneListAsSavable.length);
  createSkinningMatrices();
  for (Bone rootBone : rootBones) {
    rootBone.reset();
    rootBone.update();
    rootBone.setBindingPose();
  }
}

/**
 * Creates a skeleton from a bone list. 
 * The root bones are found automatically.
 * <p>
 * Note that using this constructor will cause the bones in the list
 * to have their bind pose recomputed based on their local transforms.
 * 
 * @param boneList The list of bones to manage by this Skeleton
 */
public Skeleton(Bone[] boneList) {
  this.boneList = boneList;
  List<Bone> rootBoneList = new ArrayList<>();
  for (int i = boneList.length - 1; i >= 0; i--) {
    Bone b = boneList[i];
    if (b.getParent() == null) {
      rootBoneList.add(b);
    }
  }
  rootBones = rootBoneList.toArray(new Bone[rootBoneList.size()]);
  createSkinningMatrices();
  for (int i = rootBones.length - 1; i >= 0; i--) {
    Bone rootBone = rootBones[i];
    rootBone.update();
    rootBone.setBindingPose();
  }
}

/**
 * Creates a skeleton from a bone list. 
 * The root bones are found automatically.
 * <p>
 * Note that using this constructor will cause the bones in the list
 * to have their bind pose recomputed based on their local transforms.
 * 
 * @param boneList The list of bones to manage by this Skeleton
 */
public Skeleton(Bone[] boneList) {
  this.boneList = boneList;
  List<Bone> rootBoneList = new ArrayList<Bone>();
  for (int i = boneList.length - 1; i >= 0; i--) {
    Bone b = boneList[i];
    if (b.getParent() == null) {
      rootBoneList.add(b);
    }
  }
  rootBones = rootBoneList.toArray(new Bone[rootBoneList.size()]);
  createSkinningMatrices();
  for (int i = rootBones.length - 1; i >= 0; i--) {
    Bone rootBone = rootBones[i];
    rootBone.update();
    rootBone.setBindingPose();
  }
}

public void read(JmeImporter im) throws IOException {
  InputCapsule input = im.getCapsule(this);
  Savable[] boneRootsAsSav = input.readSavableArray("rootBones", null);
  rootBones = new Bone[boneRootsAsSav.length];
  System.arraycopy(boneRootsAsSav, 0, rootBones, 0, boneRootsAsSav.length);
  Savable[] boneListAsSavable = input.readSavableArray("boneList", null);
  boneList = new Bone[boneListAsSavable.length];
  System.arraycopy(boneListAsSavable, 0, boneList, 0, boneListAsSavable.length);
  createSkinningMatrices();
  for (Bone rootBone : rootBones) {
    rootBone.update();
    rootBone.setBindingPose();
  }
}

@Override
public void read(JmeImporter im) throws IOException {
  InputCapsule input = im.getCapsule(this);
  Savable[] boneRootsAsSav = input.readSavableArray("rootBones", null);
  rootBones = new Bone[boneRootsAsSav.length];
  System.arraycopy(boneRootsAsSav, 0, rootBones, 0, boneRootsAsSav.length);
  Savable[] boneListAsSavable = input.readSavableArray("boneList", null);
  boneList = new Bone[boneListAsSavable.length];
  System.arraycopy(boneListAsSavable, 0, boneList, 0, boneListAsSavable.length);
  createSkinningMatrices();
  for (Bone rootBone : rootBones) {
    rootBone.reset();
    rootBone.update();
    rootBone.setBindingPose();
  }
}

/**
 * Special-purpose copy constructor.
 * <p>
 * Shallow copies bind pose data from the source skeleton, does not
 * copy any other data.
 * 
 * @param source The source Skeleton to copy from
 */
public Skeleton(Skeleton source) {
  Bone[] sourceList = source.boneList;
  boneList = new Bone[sourceList.length];
  for (int i = 0; i < sourceList.length; i++) {
    boneList[i] = new Bone(sourceList[i]);
  }
  rootBones = new Bone[source.rootBones.length];
  for (int i = 0; i < rootBones.length; i++) {
    rootBones[i] = recreateBoneStructure(source.rootBones[i]);
  }
  createSkinningMatrices();
  for (int i = rootBones.length - 1; i >= 0; i--) {
    rootBones[i].update();
  }
}

/**
 * Special-purpose copy constructor.
 * <p>
 * Shallow copies bind pose data from the source skeleton, does not
 * copy any other data.
 * 
 * @param source The source Skeleton to copy from
 */
public Skeleton(Skeleton source) {
  Bone[] sourceList = source.boneList;
  boneList = new Bone[sourceList.length];
  for (int i = 0; i < sourceList.length; i++) {
    boneList[i] = new Bone(sourceList[i]);
  }
  rootBones = new Bone[source.rootBones.length];
  for (int i = 0; i < rootBones.length; i++) {
    rootBones[i] = recreateBoneStructure(source.rootBones[i]);
  }
  createSkinningMatrices();
  for (int i = rootBones.length - 1; i >= 0; i--) {
    rootBones[i].update();
  }
}