public static void CenterPivot(ref AMT_MODEL model)
{
List <Vector3> vertices = new List <Vector3>();
for (int i = 0; i < model.Vertices.Count; i++)
{
vertices.Add(model.Vertices[i].Position);
}
BoundingBox bb = BoundingBox.CreateFromPoints(vertices);
Vector3 positionAjust = -(bb.Max + bb.Min) / 2;
Matrix translation = Matrix.CreateTranslation(positionAjust);
//redimensiona os vertices
for (int i = 0; i < model.Vertices.Count; i++)
{
model.Vertices[i].Position = Vector3.Transform(model.Vertices[i].Position, translation);
}
//reposiciona tb todos os bones e os keyframes
if (model.Joints != null)
{
for (int i = 0; i < model.Joints.Count; i++)
{
AMT_JOINT v = model.Joints[i];
//como ele mexeu na posicao entao mexe so no raiz
if (v.Name == "Root")
{
v.BindMatrix *= translation;
}
if (model.Joints[i].ParentID != -1)
{
v.MatrixAbsolute = model.Joints[i].BindMatrix *
model.Joints[model.Joints[i].ParentID].MatrixAbsolute;
}
else
{
v.MatrixAbsolute = model.Joints[i].BindMatrix;
}
v.InverseBindMatrix = Matrix.Invert(translation) * v.InverseBindMatrix;
//mexe so no raiz
if (v.Name == "Root")
{
for (int j = 0; j < v.KFData.Count; j++)
{
AMT_KF p = v.KFData[j];
p.BindMatrix *= translation;
v.KFData[j] = p;
}
}
model.Joints[i] = v;
}
}
}
public static void SetYUp(ref AMT_MODEL model, Vector3 upVector)
{
if (upVector == Vector3.UnitY)
{
return;
}
//aplica a rotacao
Matrix rotation;
if (upVector == Vector3.UnitX)
{
rotation = Matrix.CreateRotationZ(-MathHelper.PiOver2);
}
else
{
rotation = Matrix.CreateRotationX(-MathHelper.PiOver2);
}
List <Vector3> vertices = new List <Vector3>();
for (int i = 0; i < model.Vertices.Count; i++)
{
AMT_VERTEX v = model.Vertices[i];
Vector3.Transform(ref v.Position, ref rotation, out v.Position);
Vector3.TransformNormal(ref v.Normal, ref rotation, out v.Normal);
}
if (model.Joints != null)
{
for (int i = 0; i < model.Joints.Count; i++)
{
AMT_JOINT v = model.Joints[i];
//como ele mexeu na posicao entao mexe so no raiz
if (v.Name == "Root")
{
v.BindMatrix *= rotation;
}
if (model.Joints[i].ParentID != -1)
{
v.MatrixAbsolute = model.Joints[i].BindMatrix *
model.Joints[model.Joints[i].ParentID].MatrixAbsolute;
}
else
{
v.MatrixAbsolute = model.Joints[i].BindMatrix;
}
v.InverseBindMatrix = Matrix.Invert(rotation) * v.InverseBindMatrix;
//mexe so no raiz
if (v.Name == "Root")
{
for (int j = 0; j < v.KFData.Count; j++)
{
AMT_KF p = v.KFData[j];
p.BindMatrix *= rotation;
v.KFData[j] = p;
}
}
model.Joints[i] = v;
}
}
}
//deixa todos os modelos com tamanho 1 para serem redimensionados no editor
public static void UniformScale(ref AMT_MODEL model)
{
List <Vector3> vertices = new List <Vector3>();
for (int i = 0; i < model.Vertices.Count; i++)
{
vertices.Add(model.Vertices[i].Position);
}
BoundingSphere sphere = BoundingSphere.CreateFromPoints(vertices);
//redimensiona os vertices
float scalefactor = 1.0f / sphere.Radius;
//redimensiona tb todos os bones e os keyframes
Matrix scale = Matrix.CreateScale(scalefactor);
for (int i = 0; i < model.Vertices.Count; i++)
{
model.Vertices[i].Position = Vector3.Transform(model.Vertices[i].Position, scale);
model.Vertices[i].Normal = Vector3.TransformNormal(model.Vertices[i].Normal, scale);
}
if (model.Joints != null)
{
for (int i = 0; i < model.Joints.Count; i++)
{
AMT_JOINT v = model.Joints[i];
//como ele mexeu na posicao entao mexe so no raiz
if (v.Name == "Root")
{
v.BindMatrix *= scale;
}
if (model.Joints[i].ParentID != -1)
{
v.MatrixAbsolute = model.Joints[i].BindMatrix *
model.Joints[model.Joints[i].ParentID].MatrixAbsolute;
}
else
{
v.MatrixAbsolute = model.Joints[i].BindMatrix;
}
v.InverseBindMatrix = Matrix.Invert(scale) * v.InverseBindMatrix;
if (v.Name == "Root")
{
for (int j = 0; j < v.KFData.Count; j++)
{
AMT_KF p = v.KFData[j];
p.BindMatrix *= scale;
v.KFData[j] = p;
}
}
model.Joints[i] = v;
}
}
}
