Matrix3x4 Deserializer::ReadMatrix3x4()
{
float data[12];
Read(data, sizeof data);
return Matrix3x4(data);
}
Matrix3x4 Camera::GetEffectiveWorldTransform() const
{
Matrix3x4 worldTransform = node_ ? Matrix3x4(node_->GetWorldPosition(), node_->GetWorldRotation(), 1.0f) : Matrix3x4::IDENTITY;
return useReflection_ ? reflectionMatrix_ * worldTransform : worldTransform;
}
void LoadSkeleton(const ea::string& skeletonFileName)
{
// Process skeleton first (if found)
XMLElement skeletonRoot;
File skeletonFileSource(context_);
skeletonFileSource.Open(skeletonFileName);
if (!skelFile_->Load(skeletonFileSource))
PrintLine("Failed to load skeleton " + skeletonFileName);
skeletonRoot = skelFile_->GetRoot();
if (skeletonRoot)
{
XMLElement bonesRoot = skeletonRoot.GetChild("bones");
XMLElement bone = bonesRoot.GetChild("bone");
while (bone)
{
unsigned index = bone.GetInt("id");
ea::string name = bone.GetAttribute("name");
if (index >= bones_.size())
bones_.resize(index + 1);
// Convert from right- to left-handed
XMLElement position = bone.GetChild("position");
float x = position.GetFloat("x");
float y = position.GetFloat("y");
float z = position.GetFloat("z");
Vector3 pos(x, y, -z);
XMLElement rotation = bone.GetChild("rotation");
XMLElement axis = rotation.GetChild("axis");
float angle = -rotation.GetFloat("angle") * M_RADTODEG;
x = axis.GetFloat("x");
y = axis.GetFloat("y");
z = axis.GetFloat("z");
Vector3 axisVec(x, y, -z);
Quaternion rot(angle, axisVec);
bones_[index].name_ = name;
bones_[index].parentIndex_ = index; // Fill in the correct parent later
bones_[index].bindPosition_ = pos;
bones_[index].bindRotation_ = rot;
bones_[index].bindScale_ = Vector3::ONE;
bones_[index].collisionMask_ = 0;
bones_[index].radius_ = 0.0f;
bone = bone.GetNext("bone");
}
// Go through the bone hierarchy
XMLElement boneHierarchy = skeletonRoot.GetChild("bonehierarchy");
XMLElement boneParent = boneHierarchy.GetChild("boneparent");
while (boneParent)
{
ea::string bone = boneParent.GetAttribute("bone");
ea::string parent = boneParent.GetAttribute("parent");
unsigned i = 0, j = 0;
for (i = 0; i < bones_.size() && bones_[i].name_ != bone; ++i);
for (j = 0; j < bones_.size() && bones_[j].name_ != parent; ++j);
if (i >= bones_.size() || j >= bones_.size())
ErrorExit("Found indeterminate parent bone assignment");
bones_[i].parentIndex_ = j;
boneParent = boneParent.GetNext("boneparent");
}
// Calculate bone derived positions
for (unsigned i = 0; i < bones_.size(); ++i)
{
Vector3 derivedPosition = bones_[i].bindPosition_;
Quaternion derivedRotation = bones_[i].bindRotation_;
Vector3 derivedScale = bones_[i].bindScale_;
unsigned index = bones_[i].parentIndex_;
if (index != i)
{
for (;;)
{
derivedPosition = bones_[index].bindPosition_ + (bones_[index].bindRotation_ * (bones_[index].bindScale_ * derivedPosition));
derivedRotation = bones_[index].bindRotation_ * derivedRotation;
derivedScale = bones_[index].bindScale_ * derivedScale;
if (bones_[index].parentIndex_ != index)
index = bones_[index].parentIndex_;
else
break;
}
}
bones_[i].derivedPosition_ = derivedPosition;
bones_[i].derivedRotation_ = derivedRotation;
bones_[i].derivedScale_ = derivedScale;
bones_[i].worldTransform_ = Matrix3x4(derivedPosition, derivedRotation, derivedScale);
bones_[i].inverseWorldTransform_ = bones_[i].worldTransform_.Inverse();
}
PrintLine("Processed skeleton");
}
}
