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Made computeSplineJointInfosForIKTarget more general

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It should now work for non-vertical oriented splines.
This commit is contained in:
Anthony J. Thibault 2017-06-01 13:56:06 -07:00
parent f99b579c14
commit 551426f46e
1 changed files with 4 additions and 4 deletions
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8
libraries/animation/src/AnimInverseKinematics.cpp
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@ -1466,16 +1466,16 @@ void AnimInverseKinematics::computeSplineJointInfosForIKTarget(const AnimContext
// measure the total arc length along the spline // measure the total arc length along the spline
float totalArcLength = spline.arcLength(1.0f); float totalArcLength = spline.arcLength(1.0f);
// FIXME: TODO: this won't work for horizontal splines... glm::vec3 baseToTip = tipPose.trans() - basePose.trans();
float baseToTipHeight = tipPose.trans().y - basePose.trans().y; float baseToTipLength = glm::length(baseToTip);
glm::vec3 baseToTipNormal = baseToTip / baseToTipLength;
int index = target.getIndex(); int index = target.getIndex();
int endIndex = _skeleton->getParentIndex(_hipsIndex); int endIndex = _skeleton->getParentIndex(_hipsIndex);
while (index != endIndex) { while (index != endIndex) {
AnimPose defaultPose = _skeleton->getAbsoluteDefaultPose(index); AnimPose defaultPose = _skeleton->getAbsoluteDefaultPose(index);
// FIXME: TODO: this wont work for horizontal splines... float ratio = glm::dot(defaultPose.trans() - basePose.trans(), baseToTipNormal) / baseToTipLength;
float ratio = (defaultPose.trans().y - basePose.trans().y) / baseToTipHeight;
// compute offset from spline to the default pose. // compute offset from spline to the default pose.
float t = spline.arcLengthInverse(ratio * totalArcLength); float t = spline.arcLengthInverse(ratio * totalArcLength);