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Finger IK, take two.

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This commit is contained in:
Andrzej Kapolka 2013-11-13 13:53:41 -08:00
parent 3e4c5f84ed
commit 76d8bd0a9c
3 changed files with 8 additions and 11 deletions
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9
interface/src/avatar/SkeletonModel.cpp
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@ -176,15 +176,10 @@ void SkeletonModel::applyPalmData(int jointIndex, const QVector<int>& fingerJoin
float proportion = fingerIndices.size() / (float)fingerJointIndices.size();
for (int i = 0; i < fingerJointIndices.size(); i++) {
int fingerIndex = fingerIndices.at(roundf(i * proportion)).index;
glm::vec3 fingerVector = palm.getFingers()[fingerIndex].getTipPosition() -
palm.getFingers()[fingerIndex].getRootPosition();
int fingerJointIndex = fingerJointIndices.at(i);
int fingertipJointIndex = fingertipJointIndices.at(i);
glm::vec3 jointVector = extractTranslation(geometry.joints.at(fingertipJointIndex).bindTransform) -
extractTranslation(geometry.joints.at(fingerJointIndex).bindTransform);
setJointRotation(fingerJointIndex, rotationBetween(palmRotation * jointVector, fingerVector) * palmRotation, true);
setJointPosition(fingertipJointIndex, palm.getFingers()[fingerIndex].getTipPosition(),
fingerJointIndex, true, -palm.getNormal());
}
}

8
interface/src/renderer/Model.cpp
View file

@ -584,7 +584,8 @@ bool Model::getJointRotation(int jointIndex, glm::quat& rotation, bool fromBind)
return true;
}
bool Model::setJointPosition(int jointIndex, const glm::vec3& position, int lastFreeIndex, const glm::vec3& alignment) {
bool Model::setJointPosition(int jointIndex, const glm::vec3& position, int lastFreeIndex,
bool allIntermediatesFree, const glm::vec3& alignment) {
if (jointIndex == -1 || _jointStates.isEmpty()) {
return false;
}
@ -605,7 +606,7 @@ bool Model::setJointPosition(int jointIndex, const glm::vec3& position, int last
for (int j = 1; freeLineage.at(j - 1) != lastFreeIndex; j++) {
int index = freeLineage.at(j);
const FBXJoint& joint = geometry.joints.at(index);
if (!joint.isFree) {
if (!(joint.isFree || allIntermediatesFree)) {
continue;
}
JointState& state = _jointStates[index];
@ -625,7 +626,8 @@ bool Model::setJointPosition(int jointIndex, const glm::vec3& position, int last
glm::vec3 projectedCenterOfMass = glm::cross(jointVector,
glm::cross(positionSum / (j - 1.0f) - jointPosition, jointVector));
glm::vec3 projectedAlignment = glm::cross(jointVector, glm::cross(worldAlignment, jointVector));
if (glm::length(projectedCenterOfMass) > EPSILON && glm::length(projectedAlignment) > EPSILON) {
const float LENGTH_EPSILON = 0.001f;
if (glm::length(projectedCenterOfMass) > LENGTH_EPSILON && glm::length(projectedAlignment) > LENGTH_EPSILON) {
applyRotationDelta(index, rotationBetween(projectedCenterOfMass, projectedAlignment));
}
}

2
interface/src/renderer/Model.h
View file

@ -144,7 +144,7 @@ protected:
bool getJointRotation(int jointIndex, glm::quat& rotation, bool fromBind = false) const;
bool setJointPosition(int jointIndex, const glm::vec3& position, int lastFreeIndex = -1,
const glm::vec3& alignment = glm::vec3(0.0f, -1.0f, 0.0f));
bool allIntermediatesFree = false, const glm::vec3& alignment = glm::vec3(0.0f, -1.0f, 0.0f));
bool setJointRotation(int jointIndex, const glm::quat& rotation, bool fromBind = false);
/// Restores the indexed joint to its default position.