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More transform rejiggery.

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This commit is contained in:
Andrzej Kapolka 2013-10-22 15:31:27 -07:00
parent d393bdcea6
commit 1f8bed9d9c
6 changed files with 61 additions and 71 deletions
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55
interface/src/avatar/FaceModel.cpp
View file

@ -44,42 +44,21 @@ void FaceModel::simulate(float deltaTime) {
Model::simulate(deltaTime);
}
void FaceModel::updateJointState(int index) {
JointState& state = _jointStates[index];
const FBXGeometry& geometry = _geometry->getFBXGeometry();
const FBXJoint& joint = geometry.joints.at(index);
glm::quat combinedRotation = joint.preRotation * state.rotation * joint.postRotation;
if (joint.parentIndex == -1) {
glm::mat4 baseTransform = glm::translate(_translation) * glm::mat4_cast(_rotation) *
glm::scale(_scale) * glm::translate(_offset);
state.transform = baseTransform * geometry.offset * joint.preTransform *
glm::mat4_cast(combinedRotation) * joint.postTransform;
state.combinedRotation = _rotation * combinedRotation;
} else {
const JointState& parentState = _jointStates.at(joint.parentIndex);
if (index == geometry.neckJointIndex) {
// get the rotation axes in joint space and use them to adjust the rotation
glm::mat3 axes = glm::mat3_cast(getRotation());
glm::mat3 inverse = glm::inverse(glm::mat3(parentState.transform *
joint.preTransform * glm::mat4_cast(joint.preRotation * joint.rotation)));
state.rotation = glm::angleAxis(_owningHead->getRoll(), glm::normalize(inverse * axes[2])) *
glm::angleAxis(_owningHead->getYaw(), glm::normalize(inverse * axes[1])) *
glm::angleAxis(_owningHead->getPitch(), glm::normalize(inverse * axes[0])) * joint.rotation;
} else if (index == geometry.leftEyeJointIndex || index == geometry.rightEyeJointIndex) {
// likewise with the eye joints
glm::mat4 inverse = glm::inverse(parentState.transform *
joint.preTransform * glm::mat4_cast(joint.preRotation * joint.rotation));
glm::vec3 front = glm::vec3(inverse * glm::vec4(_owningHead->getOrientation() * IDENTITY_FRONT, 0.0f));
glm::vec3 lookAt = glm::vec3(inverse * glm::vec4(_owningHead->getLookAtPosition() +
_owningHead->getSaccade(), 1.0f));
state.rotation = rotationBetween(front, lookAt) * joint.rotation;
}
state.transform = parentState.transform * joint.preTransform *
glm::mat4_cast(combinedRotation) * joint.postTransform;
state.combinedRotation = parentState.combinedRotation * combinedRotation;
}
void FaceModel::maybeUpdateNeckRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
// get the rotation axes in joint space and use them to adjust the rotation
glm::mat3 axes = glm::mat3_cast(_rotation);
glm::quat inverse = parentState.combinedRotation * joint.preRotation * joint.rotation;
state.rotation = glm::angleAxis(_owningHead->getRoll(), glm::normalize(inverse * axes[2])) *
glm::angleAxis(_owningHead->getYaw(), glm::normalize(inverse * axes[1])) *
glm::angleAxis(_owningHead->getPitch(), glm::normalize(inverse * axes[0])) * joint.rotation;
}
void FaceModel::maybeUpdateEyeRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
// likewise with the eye joints
glm::mat4 inverse = glm::inverse(parentState.transform *
joint.preTransform * glm::mat4_cast(joint.preRotation * joint.rotation));
glm::vec3 front = glm::vec3(inverse * glm::vec4(_owningHead->getOrientation() * IDENTITY_FRONT, 0.0f));
glm::vec3 lookAt = glm::vec3(inverse * glm::vec4(_owningHead->getLookAtPosition() +
_owningHead->getSaccade(), 1.0f));
state.rotation = rotationBetween(front, lookAt) * joint.rotation;
}

4
interface/src/avatar/FaceModel.h
View file

@ -25,8 +25,8 @@ public:
protected:
/// Updates the state of the joint at the specified index.
virtual void updateJointState(int index);
virtual void maybeUpdateNeckRotation(const JointState& parentState, const FBXJoint& joint, JointState& state);
virtual void maybeUpdateEyeRotation(const JointState& parentState, const FBXJoint& joint, JointState& state);
private:

41
interface/src/avatar/SkeletonModel.cpp
View file

@ -58,38 +58,21 @@ bool SkeletonModel::render(float alpha) {
}
void SkeletonModel::updateJointState(int index) {
JointState& state = _jointStates[index];
const FBXGeometry& geometry = _geometry->getFBXGeometry();
const FBXJoint& joint = geometry.joints.at(index);
Model::updateJointState(index);
glm::quat combinedRotation = joint.preRotation * state.rotation * joint.postRotation;
if (joint.parentIndex == -1) {
glm::mat4 baseTransform = glm::translate(_translation) * glm::mat4_cast(_rotation) *
glm::scale(_scale) * glm::translate(_offset);
state.transform = baseTransform * geometry.offset * joint.preTransform *
glm::mat4_cast(combinedRotation) * joint.postTransform;
state.combinedRotation = _rotation * combinedRotation;
} else {
const JointState& parentState = _jointStates.at(joint.parentIndex);
if (index == geometry.leanJointIndex) {
// get the rotation axes in joint space and use them to adjust the rotation
state.combinedRotation = _rotation * glm::quat(glm::radians(glm::vec3(_owningAvatar->getHead().getLeanForward(),
0.0f, _owningAvatar->getHead().getLeanSideways()))) * glm::inverse(_rotation) * parentState.combinedRotation *
joint.preRotation * joint.rotation;
state.rotation = glm::inverse(joint.postRotation * glm::inverse(state.combinedRotation) *
parentState.combinedRotation * joint.preRotation);
combinedRotation = joint.preRotation * state.rotation * joint.postRotation;
}
state.transform = parentState.transform * joint.preTransform *
glm::mat4_cast(combinedRotation) * joint.postTransform;
state.combinedRotation = parentState.combinedRotation * combinedRotation;
}
if (index == geometry.rootJointIndex) {
if (index == _geometry->getFBXGeometry().rootJointIndex) {
JointState& state = _jointStates[index];
state.transform[3][0] = _translation.x;
state.transform[3][1] = _translation.y;
state.transform[3][2] = _translation.z;
}
}
void SkeletonModel::maybeUpdateLeanRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
// get the rotation axes in joint space and use them to adjust the rotation
glm::mat3 axes = glm::mat3_cast(_rotation);
glm::quat inverse = parentState.combinedRotation * joint.preRotation * joint.rotation;
state.rotation = glm::angleAxis(-_owningAvatar->getHead().getLeanSideways(), glm::normalize(inverse * axes[2])) *
glm::angleAxis(-_owningAvatar->getHead().getLeanForward(), glm::normalize(inverse * axes[0])) * joint.rotation;
}

2
interface/src/avatar/SkeletonModel.h
View file

@ -29,6 +29,8 @@ protected:
/// Updates the state of the joint at the specified index.
virtual void updateJointState(int index);
virtual void maybeUpdateLeanRotation(const JointState& parentState, const FBXJoint& joint, JointState& state);
private:
Avatar* _owningAvatar;

26
interface/src/renderer/Model.cpp
View file

@ -387,23 +387,45 @@ void Model::updateJointState(int index) {
const FBXGeometry& geometry = _geometry->getFBXGeometry();
const FBXJoint& joint = geometry.joints.at(index);
glm::quat combinedRotation = joint.preRotation * state.rotation * joint.postRotation;
if (joint.parentIndex == -1) {
glm::mat4 baseTransform = glm::translate(_translation) * glm::mat4_cast(_rotation) *
glm::scale(_scale) * glm::translate(_offset);
glm::quat combinedRotation = joint.preRotation * state.rotation * joint.postRotation;
state.transform = baseTransform * geometry.offset * joint.preTransform *
glm::mat4_cast(combinedRotation) * joint.postTransform;
state.combinedRotation = _rotation * combinedRotation;
} else {
const JointState& parentState = _jointStates.at(joint.parentIndex);
if (index == geometry.leanJointIndex) {
maybeUpdateLeanRotation(parentState, joint, state);
} else if (index == geometry.neckJointIndex) {
maybeUpdateNeckRotation(parentState, joint, state);
} else if (index == geometry.leftEyeJointIndex || index == geometry.rightEyeJointIndex) {
maybeUpdateEyeRotation(parentState, joint, state);
}
glm::quat combinedRotation = joint.preRotation * state.rotation * joint.postRotation;
state.transform = parentState.transform * joint.preTransform *
glm::mat4_cast(combinedRotation) * joint.postTransform;
state.combinedRotation = parentState.combinedRotation * combinedRotation;
}
}
void Model::maybeUpdateLeanRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
// nothing by default
}
void Model::maybeUpdateNeckRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
// nothing by default
}
void Model::maybeUpdateEyeRotation(const JointState& parentState, const FBXJoint& joint, JointState& state) {
// nothing by default
}
bool Model::getJointPosition(int jointIndex, glm::vec3& position) const {
if (jointIndex == -1 || _jointStates.isEmpty()) {
return false;

4
interface/src/renderer/Model.h
View file

@ -94,6 +94,10 @@ protected:
/// Updates the state of the joint at the specified index.
virtual void updateJointState(int index);
virtual void maybeUpdateLeanRotation(const JointState& parentState, const FBXJoint& joint, JointState& state);
virtual void maybeUpdateNeckRotation(const JointState& parentState, const FBXJoint& joint, JointState& state);
virtual void maybeUpdateEyeRotation(const JointState& parentState, const FBXJoint& joint, JointState& state);
private:
bool getJointPosition(int jointIndex, glm::vec3& position) const;