// ######################################################################
void MotionPlanner2dModule::run()
{
while (running())
{
/*
* T = get the transform from robot to target
* def rotateToFaceTarget:
* t = get the translation component from T
* find the angle between my X component and t
* minimize that angle
* def translateToReachTarget:
* t = get the translation component from T
* minimize that component
* def rotateToTarget:
* r = get the rotation component from T
* minimize that component
*
* if T is farther away than some threshold and T.rotation is not close to zero:
* rotateToFaceTarget()
* else if T is farther away than some threshold:
* translateToReachTarget(
* else:
* rotateToTarget()
*/
TransformLookupMessage::unique_ptr transformLookupMsg(new TransformLookupMessage( nrt::now(), itsFromFrameParam.getVal(), itsTargetFrameParam.getVal() ));
nrt::MessagePosterResults<TransformLookupPort> results = post<TransformLookupPort>(transformLookupMsg);
if(results.size() == 0)
{
NRT_WARNING("No Transform Manager Connected!");
return;
}
std::shared_ptr<nrt::TransformMessage const> transformMessage = results.get();
nrt::Transform3D transform = transformMessage->transform;
Eigen::Translation3d translation = (Eigen::Translation3d)transform.translation();
VelocityMessage::unique_ptr msg(new VelocityMessage);
msg->linear.x() = 0.0;
msg->linear.y() = 0.0;
msg->linear.z() = 0.0;
msg->angular.x() = 0.0;
msg->angular.y() = 0.0;
msg->angular.z() = 0.0;
if (translation.x() > itsDistanceThresholdParam.getVal() && fabs(GetAngle(translation)) > itsRotationThresholdParam.getVal())
msg->angular.z() = RotateToFaceTarget(translation);
else if (translation.x() > itsDistanceThresholdParam.getVal())
{
msg->linear.x() = TranslateToReachTarget(translation);
msg->angular.z() = RotateToFaceTarget(translation);
}
else
msg->angular.z() = RotateToTarget(transform);
NRT_INFO("Posting velocity message with angular component " << msg->angular.z() << " and linear component " << msg->linear.x());
post<VelocityCommand>(msg);
}
}
// ######################################################################
double MotionPlanner2dModule::RotateToFaceTarget(Eigen::Translation3d const & translation)
{
double angle = atan2(translation.y(), translation.x());
itsAngularPidComponent->setObservedValue(-angle);
itsAngularPidComponent->setDesiredValue(0.0);
return itsAngularPidComponent->update();
}
YAML::Node SetPositionYaml( const Eigen::Translation3d& trans )
{
YAML::Node node;
node["x"] = trans.x();
node["y"] = trans.y();
node["z"] = trans.z();
return node;
}
double MotionPlanner2dModule::GetAngle(Eigen::Translation3d const & translation)
{
return atan2(translation.y(), translation.x());
}
// ######################################################################
double MotionPlanner2dModule::TranslateToReachTarget(Eigen::Translation3d const & translation)
{
itsTranslationalPidComponent->setObservedValue(-translation.x());
itsTranslationalPidComponent->setDesiredValue(0.0);
return itsTranslationalPidComponent->update();
}
