private void FillBoneNodes(ref AMT_JOINT parentBone, XElement boneNode, ref AMT_MODEL amtModel)
{
//pego todos os nodes
List<XElement> nodes = boneNode.Elements(XName.Get("node", Namespace)).ToList();
foreach (var node in nodes)
{
//se é um bone
if (node.Attribute("type") != null &&
node.Attribute("type").Value.Contains("JOINT"))
{
Matrix matrix = Matrix.Identity;
//pega o nome e a matrix do bone
string boneName = node.Attribute("name").Value;
string boneId = node.Attribute("id").Value;
string sid = node.Attribute("sid").Value;
XElement matrixElement = node.Element(XName.Get("matrix", Namespace));
string matrixSID = null;
if (matrixElement.Attribute("sid") != null)
matrixSID = matrixElement.Attribute("sid").Value; //uso nas animacoes para achar o bone id/sid
matrix = Tools.ConvertStringToMatrix(matrixElement.Value, 0);
// Create this node, use the current number of bones as number.
AMT_JOINT newBone = new AMT_JOINT();
newBone.SID = sid;
newBone.TARGET = boneId + "/" + matrixSID;
newBone.ID = (uint)amtModel.Joints.Count();
newBone.ParentID = (int)parentBone.ID;
newBone.Name = boneName;
newBone.NumChildren = 0;
newBone.JointChildren = new List<uint>();
newBone.NumKF = 0;
newBone.KFData = new List<AMT_KF>();
newBone.IsAnimated = (uint)(string.IsNullOrEmpty(matrixSID) ? 0 : 1);
newBone.Flag = 0;
//atualiza o bone pai
parentBone.NumChildren++;
parentBone.JointChildren.Add(newBone.ID);
//matrix relativa
newBone.BindMatrix = matrix;
//absoluta = relativa do atual * absoluta do pai
newBone.MatrixAbsolute = matrix * parentBone.MatrixAbsolute;
//inversa da matriz relativa
newBone.InverseBindMatrix = Matrix.Invert(newBone.MatrixAbsolute);
amtModel.Joints.Add(newBone);
// vai para os filhos
FillBoneNodes(ref newBone, node, ref amtModel);
}
}
}
private void ConvertBones(XElement rootElement, ref AMT_MODEL amtModel)
{
//primeiro eu encontro o library_visual_scenes
XElement libraryVisualScenes = rootElement.Element(XName.Get("library_visual_scenes", Namespace));
XElement visualScene = libraryVisualScenes.Element(XName.Get("visual_scene", Namespace));
//se tem o nodo skeleton
XElement rootNode = FindRootSkeletonNodeId(visualScene);
amtModel.Joints = new List<AMT_JOINT>();
//Começo a percorrer os nodes procurando pela hierarquia de bones
if (rootNode != null)
{
//adiciona o bone raiz
Matrix matrix = Matrix.Identity;
string sid = rootNode.Attribute("sid").Value;
string boneId = rootNode.Attribute("id").Value;
XElement matrixElement = rootNode.Element(XName.Get("matrix", Namespace));
string matrixSID = null;
if (matrixElement.Attribute("sid") != null)
matrixSID = matrixElement.Attribute("sid").Value; //uso nas animacoes para achar o bone id/sid
matrix = Tools.ConvertStringToMatrix(matrixElement.Value, 0);
AMT_JOINT newBone = new AMT_JOINT();
newBone.SID = sid;
newBone.TARGET = boneId + "/" + matrixSID;
newBone.ID = 0;
newBone.ParentID = -1; //nao tem pai
newBone.Name = "Root";
newBone.NumChildren = 0;
newBone.JointChildren = new List<uint>();
newBone.NumKF = 0;
newBone.KFData = new List<AMT_KF>();
//se nao tem sid entao ele nao é animado
newBone.IsAnimated = (uint)(string.IsNullOrEmpty(matrixSID)? 0 : 1);
newBone.Flag = 0;
newBone.BindMatrix = matrix;
newBone.MatrixAbsolute = matrix;
newBone.InverseBindMatrix = Matrix.Invert(matrix);
amtModel.Joints.Add(newBone);
FillBoneNodes(ref newBone, rootNode, ref amtModel);
}
}