rbprmbuilder.impl.cc 101 KB
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// Copyright (c) 2012 CNRS
// Author: Florent Lamiraux, Joseph Mirabel
//
// This file is part of hpp-manipulation-corba.
// hpp-manipulation-corba is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation, either version
// 3 of the License, or (at your option) any later version.
//
// hpp-manipulation-corba is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Lesser Public License for more details.  You should have
// received a copy of the GNU Lesser General Public License along with
// hpp-manipulation-corba.  If not, see
// <http://www.gnu.org/licenses/>.

//#include <hpp/fcl/math/transform.h>
#include <hpp/util/debug.hh>
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#include "hpp/corbaserver/rbprm/rbprmbuilder.hh"
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#include "rbprmbuilder.impl.hh"
#include "hpp/rbprm/rbprm-device.hh"
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#include "hpp/rbprm/rbprm-validation.hh"
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#include "hpp/rbprm/interpolation/rbprm-path-interpolation.hh"
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#include "hpp/rbprm/interpolation/limb-rrt.hh"
#include "hpp/rbprm/interpolation/com-rrt.hh"
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#include "hpp/rbprm/interpolation/com-trajectory.hh"
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#include "hpp/rbprm/interpolation/spline/effector-rrt.hh"
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#include "hpp/rbprm/projection/projection.hh"
#include "hpp/rbprm/contact_generation/contact_generation.hh"
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#include "hpp/rbprm/contact_generation/algorithm.hh"
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#include "hpp/rbprm/stability/stability.hh"
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#include "hpp/rbprm/sampling/sample-db.hh"
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#include "hpp/model/urdf/util.hh"
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#include "hpp/core/straight-path.hh"
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#include "hpp/model/joint.hh"
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#include "hpp/core/config-validations.hh"
#include "hpp/core/collision-validation-report.hh"
#include <hpp/core/subchain-path.hh>
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#include <hpp/core/basic-configuration-shooter.hh>
#include <hpp/core/collision-validation.hh>
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#include <fstream>
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#include <algorithm>    // std::random_shuffle
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#include "spline/bezier_curve.h"
#include "hpp/rbprm/interpolation/polynom-trajectory.hh"
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#ifdef PROFILE
    #include "hpp/rbprm/rbprm-profiler.hh"
#endif

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namespace hpp {
  namespace rbprm {
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  typedef spline::bezier_curve<> bezier;
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    namespace impl {

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    RbprmBuilder::RbprmBuilder ()
    : POA_hpp::corbaserver::rbprm::RbprmBuilder()
    , romLoaded_(false)
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    , fullBodyLoaded_(false)
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    , bindShooter_()
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    , analysisFactory_(0)
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    {
        // NOTHING
    }

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    void RbprmBuilder::loadRobotRomModel(const char* robotName,
         const char* rootJointType,
         const char* packageName,
         const char* modelName,
         const char* urdfSuffix,
         const char* srdfSuffix) throw (hpp::Error)
    {
        try
        {
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            hpp::model::DevicePtr_t romDevice = model::Device::create (robotName);
            romDevices_.insert(std::make_pair(robotName, romDevice));
            hpp::model::urdf::loadRobotModel (romDevice,
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                    std::string (rootJointType),
                    std::string (packageName),
                    std::string (modelName),
                    std::string (urdfSuffix),
                    std::string (srdfSuffix));
        }
        catch (const std::exception& exc)
        {
            hppDout (error, exc.what ());
            throw hpp::Error (exc.what ());
        }
        romLoaded_ = true;
    }

    void RbprmBuilder::loadRobotCompleteModel(const char* robotName,
         const char* rootJointType,
         const char* packageName,
         const char* modelName,
         const char* urdfSuffix,
         const char* srdfSuffix) throw (hpp::Error)
    {
        if(!romLoaded_)
        {
            std::string err("Rom must be loaded before loading complete model") ;
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            hppDout (error, err );
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            throw hpp::Error(err.c_str());
        }
        try
        {
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            hpp::model::RbPrmDevicePtr_t device = hpp::model::RbPrmDevice::create (robotName, romDevices_);
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            hpp::model::urdf::loadRobotModel (device,
                    std::string (rootJointType),
                    std::string (packageName),
                    std::string (modelName),
                    std::string (urdfSuffix),
                    std::string (srdfSuffix));
            // Add device to the planner
            problemSolver_->robot (device);
            problemSolver_->robot ()->controlComputation
            (model::Device::JOINT_POSITION);
        }
        catch (const std::exception& exc)
        {
            hppDout (error, exc.what ());
            throw hpp::Error (exc.what ());
        }
    }

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    void RbprmBuilder::loadFullBodyRobot(const char* robotName,
         const char* rootJointType,
         const char* packageName,
         const char* modelName,
         const char* urdfSuffix,
         const char* srdfSuffix) throw (hpp::Error)
    {
        try
        {
            model::DevicePtr_t device = model::Device::create (robotName);
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            hpp::model::urdf::loadRobotModel (device,
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                    std::string (rootJointType),
                    std::string (packageName),
                    std::string (modelName),
                    std::string (urdfSuffix),
                    std::string (srdfSuffix));
            fullBody_ = rbprm::RbPrmFullBody::create(device);
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            problemSolver_->pathValidationType ("Discretized",0.05); // reset to avoid conflict with rbprm path
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            problemSolver_->robot (fullBody_->device_);
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            problemSolver_->resetProblem();
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            problemSolver_->robot ()->controlComputation
            (model::Device::JOINT_POSITION);
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        }
        catch (const std::exception& exc)
        {
            hppDout (error, exc.what ());
            throw hpp::Error (exc.what ());
        }
        fullBodyLoaded_ = true;
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        analysisFactory_ = new sampling::AnalysisFactory(fullBody_);
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    }

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    void RbprmBuilder::loadFullBodyRobotFromExistingRobot() throw (hpp::Error)
    {
        try
        {
            fullBody_ = rbprm::RbPrmFullBody::create(problemSolver_->problem()->robot());
            problemSolver_->pathValidationType ("Discretized",0.05); // reset to avoid conflict with rbprm path
            problemSolver_->robot (fullBody_->device_);
            problemSolver_->resetProblem();
            problemSolver_->robot ()->controlComputation
            (model::Device::JOINT_POSITION);
        }
        catch (const std::exception& exc)
        {
            hppDout (error, exc.what ());
            throw hpp::Error (exc.what ());
        }
        fullBodyLoaded_ = true;
        analysisFactory_ = new sampling::AnalysisFactory(fullBody_);
    }

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    hpp::floatSeq* RbprmBuilder::getSampleConfig(const char* limb, unsigned short sampleId) throw (hpp::Error)
    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        const T_Limb& limbs = fullBody_->GetLimbs();
        T_Limb::const_iterator lit = limbs.find(std::string(limb));
        if(lit == limbs.end())
        {
            std::string err("No limb " + std::string(limb) + "was defined for robot" + fullBody_->device_->name());
            throw Error (err.c_str());
        }
        const RbPrmLimbPtr_t& limbPtr = lit->second;
        hpp::floatSeq *dofArray;
        Eigen::VectorXd config = fullBody_->device_->currentConfiguration ();
        if(sampleId > limbPtr->sampleContainer_.samples_.size())
        {
            std::string err("Limb " + std::string(limb) + "does not have samples.");
            throw Error (err.c_str());
        }
        const sampling::Sample& sample = limbPtr->sampleContainer_.samples_[sampleId];
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        config.segment(sample.startRank_, sample.length_) = sample.configuration_;
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        dofArray = new hpp::floatSeq();
        dofArray->length(_CORBA_ULong(config.rows()));
        for(std::size_t i=0; i< _CORBA_ULong(config.rows()); i++)
          (*dofArray)[(_CORBA_ULong)i] = config [i];
        return dofArray;
    }

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    hpp::floatSeq* RbprmBuilder::getSamplePosition(const char* limb, unsigned short sampleId) throw (hpp::Error)
    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        const T_Limb& limbs = fullBody_->GetLimbs();
        T_Limb::const_iterator lit = limbs.find(std::string(limb));
        if(lit == limbs.end())
        {
            std::string err("No limb " + std::string(limb) + "was defined for robot" + fullBody_->device_->name());
            throw Error (err.c_str());
        }
        const RbPrmLimbPtr_t& limbPtr = lit->second;
        hpp::floatSeq *dofArray;
        if(sampleId > limbPtr->sampleContainer_.samples_.size())
        {
            std::string err("Limb " + std::string(limb) + "does not have samples.");
            throw Error (err.c_str());
        }
        const sampling::Sample& sample = limbPtr->sampleContainer_.samples_[sampleId];
        const fcl::Vec3f& position = sample.effectorPosition_;
        dofArray = new hpp::floatSeq();
        dofArray->length(_CORBA_ULong(3));
        for(std::size_t i=0; i< 3; i++)
          (*dofArray)[(_CORBA_ULong)i] = position [i];
        return dofArray;
    }

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    typedef Eigen::Matrix <value_type, 4, 3, Eigen::RowMajor> Matrix43;
    typedef Eigen::Matrix <value_type, 4, 3, Eigen::RowMajor> Rotation;
    typedef Eigen::Ref<Matrix43> Ref_matrix43;

    std::vector<fcl::Vec3f> computeRectangleContact(const rbprm::RbPrmFullBodyPtr_t device,
                                                    const rbprm::State& state)
    {
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        device->device_->currentConfiguration(state.configuration_);
        device->device_->computeForwardKinematics();
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        std::vector<fcl::Vec3f> res;
        const rbprm::T_Limb& limbs = device->GetLimbs();
        rbprm::RbPrmLimbPtr_t limb;
        Matrix43 p; Eigen::Matrix3d R;
        for(std::map<std::string, fcl::Vec3f>::const_iterator cit = state.contactPositions_.begin();
            cit != state.contactPositions_.end(); ++cit)
        {
            const std::string& name = cit->first;
            const fcl::Vec3f& position = cit->second;
            limb = limbs.at(name);
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            const fcl::Vec3f& normal = state.contactNormals_.at(name);
            const fcl::Vec3f z = limb->effector_->currentTransformation().getRotation() * limb->normal_;
            const fcl::Matrix3f alignRotation = tools::GetRotationMatrix(z,normal);
            const fcl::Matrix3f rotation = alignRotation * limb->effector_->currentTransformation().getRotation();
            const fcl::Vec3f offset = rotation * limb->offset_;
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            const double& lx = limb->x_, ly = limb->y_;
            p << lx,  ly, 0,
                 lx, -ly, 0,
                -lx, -ly, 0,
                -lx,  ly, 0;
            if(limb->contactType_ == _3_DOF)
            {
                //create rotation matrix from normal
                fcl::Vec3f z_fcl = state.contactNormals_.at(name);
                Eigen::Vector3d z,x,y;
                for(int i =0; i<3; ++i) z[i] = z_fcl[i];
                x = z.cross(Eigen::Vector3d(0,-1,0));
                if(x.norm() < 10e-6)
                {
                    y = z.cross(fcl::Vec3f(1,0,0));
                    y.normalize();
                    x = y.cross(z);
                }
                else
                {
                    x.normalize();
                    y = z.cross(x);
                }
                R.block<3,1>(0,0) = x;
                R.block<3,1>(0,1) = y;
                R.block<3,1>(0,2) = z;
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                /*for(std::size_t i =0; i<4; ++i)
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                {
                    res.push_back(position + (R*(p.row(i).transpose())) + offset);
                    res.push_back(state.contactNormals_.at(name));
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                }*/
                res.push_back(position + (R*(offset)));
                res.push_back(state.contactNormals_.at(name));
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            }
            else
            {
                const fcl::Matrix3f& fclRotation = state.contactRotation_.at(name);
                for(int i =0; i< 3; ++i)
                    for(int j =0; j<3;++j)
                        R(i,j) = fclRotation(i,j);
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                fcl::Vec3f z_axis(0,0,1);
                fcl::Matrix3f rotationLocal = tools::GetRotationMatrix(z_axis, limb->normal_);
                for(std::size_t i =0; i<4; ++i)
                {
                    res.push_back(position + (R*(rotationLocal*(p.row(i).transpose() + limb->offset_))));
                    res.push_back(state.contactNormals_.at(name));
                }
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            }
        }
        return res;
    }

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    std::vector<fcl::Vec3f> computeRectangleContact(const rbprm::RbPrmFullBodyPtr_t device,
                                                    const rbprm::State& state,
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                                                    const std::string& limbName)
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    {
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        device->device_->currentConfiguration(state.configuration_);
        device->device_->computeForwardKinematics();
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        std::vector<fcl::Vec3f> res;
        const rbprm::T_Limb& limbs = device->GetLimbs();
        rbprm::RbPrmLimbPtr_t limb;
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        Matrix43 p; Eigen::Matrix3d R = Eigen::Matrix3d::Identity(); Eigen::Matrix3d cFrame = Eigen::Matrix3d::Identity();
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        for(std::map<std::string, fcl::Vec3f>::const_iterator cit = state.contactPositions_.begin();
            cit != state.contactPositions_.end(); ++cit)
        {
            const std::string& name = cit->first;
            if(limbName == name)
            {
                const fcl::Vec3f& position = cit->second;
                limb = limbs.at(name);
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                const fcl::Vec3f& normal = state.contactNormals_.at(name);
                const fcl::Vec3f z = limb->effector_->currentTransformation().getRotation() * limb->normal_;
                const fcl::Matrix3f alignRotation = tools::GetRotationMatrix(z,normal);
                const fcl::Matrix3f rotation = alignRotation * limb->effector_->currentTransformation().getRotation();
                const fcl::Vec3f offset = rotation * limb->offset_;
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                const double& lx = limb->x_, ly = limb->y_;
                p << lx,  ly, 0,
                     lx, -ly, 0,
                    -lx, -ly, 0,
                    -lx,  ly, 0;
                if(limb->contactType_ == _3_DOF)
                {
                    //create rotation matrix from normal
                    Eigen::Vector3d z,x,y;
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                    for(int i =0; i<3; ++i) z[i] = normal[i];
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                    x = z.cross(Eigen::Vector3d(0,-1,0));
                    if(x.norm() < 10e-6)
                    {
                        y = z.cross(fcl::Vec3f(1,0,0));
                        y.normalize();
                        x = y.cross(z);
                    }
                    else
                    {
                        x.normalize();
                        y = z.cross(x);
                    }
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                    cFrame.block<3,1>(0,0) = x;
                    cFrame.block<3,1>(0,1) = y;
                    cFrame.block<3,1>(0,2) = z;
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                }
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                fcl::Transform3f roWorld, roEffector;
                roWorld.setRotation(state.contactRotation_.at(name));
                roWorld.setTranslation(position);
                roEffector = roWorld; roEffector.inverse();
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                fcl::Vec3f z_axis(0,0,1);
                fcl::Matrix3f rotationLocal = tools::GetRotationMatrix(z_axis, limb->normal_);
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                if(limb->contactType_ == _3_DOF)
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                {
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                    fcl::Vec3f pworld = position +  offset;
                    res.push_back((roEffector * pworld).getTranslation());
                    res.push_back(roEffector.getRotation() * state.contactNormals_.at(name));
                }
                else
                {
                    for(std::size_t i =0; i<4; ++i)
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                    {
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                        /*if(limb->contactType_ == _3_DOF)
                        {
                            fcl::Vec3f pworld = position + (cFrame*(p.row(i).transpose())) + offset;
                            res.push_back((roEffector * pworld).getTranslation());
                            res.push_back(roEffector.getRotation() * state.contactNormals_.at(name));
                        }
                        else*/
                        {
                            res.push_back(rotationLocal*(p.row(i).transpose()) + limb->offset_);
                            res.push_back(roEffector.getRotation() * state.contactNormals_.at(name));
                        }
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                    }
                }
                return res;
            }
        }
        return res;
    }

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    model::Configuration_t dofArrayToConfig (const std::size_t& deviceDim,
      const hpp::floatSeq& dofArray)
    {
        std::size_t configDim = (std::size_t)dofArray.length();
        // Fill dof vector with dof array.
        model::Configuration_t config; config.resize (configDim);
        for (std::size_t iDof = 0; iDof < configDim; iDof++) {
            config [iDof] = (double)dofArray[(_CORBA_ULong)iDof];
        }
        // fill the vector by zero
        hppDout (info, "config dimension: " <<configDim
           <<",  deviceDim "<<deviceDim);
        if(configDim != deviceDim){
            throw hpp::Error ("dofVector Does not match");
        }
        return config;
    }

    model::Configuration_t dofArrayToConfig (const model::DevicePtr_t& robot,
      const hpp::floatSeq& dofArray)
    {
        return dofArrayToConfig(robot->configSize(), dofArray);
    }

    T_Configuration doubleDofArrayToConfig (const std::size_t& deviceDim,
      const hpp::floatSeqSeq& doubleDofArray)
    {
        std::size_t configsDim = (std::size_t)doubleDofArray.length();
        T_Configuration res;
        for (_CORBA_ULong iConfig = 0; iConfig < configsDim; iConfig++)
        {
            res.push_back(dofArrayToConfig(deviceDim, doubleDofArray[iConfig]));
        }
        return res;
    }

    T_Configuration doubleDofArrayToConfig (const model::DevicePtr_t& robot,
      const hpp::floatSeqSeq& doubleDofArray)
    {
        return doubleDofArrayToConfig(robot->configSize(), doubleDofArray);
    }

    hpp::floatSeqSeq* RbprmBuilder::getEffectorPosition(const char* lb, const hpp::floatSeq& configuration) throw (hpp::Error)
    {
        try
        {
            const std::string limbName(lb);
            const RbPrmLimbPtr_t limb = fullBody_->GetLimbs().at(limbName);
            model::Configuration_t config = dofArrayToConfig (fullBody_->device_, configuration);
            fullBody_->device_->currentConfiguration(config);
            fullBody_->device_->computeForwardKinematics();
            State state;
            state.configuration_ = config;
            state.contacts_[limbName] = true;
            const fcl::Vec3f position = limb->effector_->currentTransformation().getTranslation();
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            state.contactPositions_[limbName] = position;
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            state.contactNormals_[limbName] = fcl::Vec3f(0,0,1);
            state.contactRotation_[limbName] = limb->effector_->currentTransformation().getRotation();
            std::vector<fcl::Vec3f> poss = (computeRectangleContact(fullBody_, state));

            hpp::floatSeqSeq *res;
            res = new hpp::floatSeqSeq ();
            res->length ((_CORBA_ULong)poss.size ());
            for(std::size_t i = 0; i < poss.size(); ++i)
            {
                _CORBA_ULong size = (_CORBA_ULong) (3);
                double* dofArray = hpp::floatSeq::allocbuf(size);
                hpp::floatSeq floats (size, size, dofArray, true);
                //convert the config in dofseq
                for(std::size_t j=0; j<3; j++)
                {
                    dofArray[j] = poss[i][j];
                }
                (*res) [(_CORBA_ULong)i] = floats;
            }
            return res;
        }
        catch (const std::exception& exc)
        {
            throw hpp::Error (exc.what ());
        }
    }


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    CORBA::UShort RbprmBuilder::getNumSamples(const char* limb) throw (hpp::Error)
    {
        const T_Limb& limbs = fullBody_->GetLimbs();
        T_Limb::const_iterator lit = limbs.find(std::string(limb));
        if(lit == limbs.end())
        {
            std::string err("No limb " + std::string(limb) + "was defined for robot" + fullBody_->device_->name());
            throw Error (err.c_str());
        }
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        return (CORBA::UShort)(lit->second->sampleContainer_.samples_.size());
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    }

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    floatSeq *RbprmBuilder::getOctreeNodeIds(const char* limb) throw (hpp::Error)
    {
        const T_Limb& limbs = fullBody_->GetLimbs();
        T_Limb::const_iterator lit = limbs.find(std::string(limb));
        if(lit == limbs.end())
        {
            std::string err("No limb " + std::string(limb) + "was defined for robot" + fullBody_->device_->name());
            throw Error (err.c_str());
        }
        const sampling::T_VoxelSampleId& ids =  lit->second->sampleContainer_.samplesInVoxels_;
        hpp::floatSeq* dofArray = new hpp::floatSeq();
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        dofArray->length((_CORBA_ULong)ids.size());
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        sampling::T_VoxelSampleId::const_iterator it = ids.begin();
        for(std::size_t i=0; i< _CORBA_ULong(ids.size()); ++i, ++it)
        {
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          (*dofArray)[(_CORBA_ULong)i] = (double)it->first;
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        }
        return dofArray;
    }

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    double RbprmBuilder::getSampleValue(const char* limb, const char* valueName, unsigned short sampleId) throw (hpp::Error)
    {
        const T_Limb& limbs = fullBody_->GetLimbs();
        T_Limb::const_iterator lit = limbs.find(std::string(limb));
        if(lit == limbs.end())
        {
            std::string err("No limb " + std::string(limb) + "was defined for robot" + fullBody_->device_->name());
            throw Error (err.c_str());
        }
        const sampling::SampleDB& database = lit->second->sampleContainer_;
        if (database.samples_.size() <= sampleId)
        {
            std::string err("unexisting sample id " + sampleId);
            throw Error (err.c_str());
        }
        sampling::T_Values::const_iterator cit = database.values_.find(std::string(valueName));
        if(cit == database.values_.end())
        {
            std::string err("value not existing in database " + std::string(valueName));
            throw Error (err.c_str());
        }
        return cit->second[sampleId];
    }

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    double RbprmBuilder::getEffectorDistance(unsigned short state1, unsigned short state2) throw (hpp::Error)
    {
        try
        {
            std::size_t s1((std::size_t)state1), s2((std::size_t)state2);
            if(lastStatesComputed_.size () < s1 || lastStatesComputed_.size () < s2 )
            {
                throw std::runtime_error ("did not find a states at indicated indices: " + std::string(""+s1) + ", " + std::string(""+s2));
            }
            return rbprm::effectorDistance(lastStatesComputed_[s1], lastStatesComputed_[s2]);
        }
        catch(std::runtime_error& e)
        {
            throw Error(e.what());
        }
    }

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    std::vector<std::string> stringConversion(const hpp::Names_t& dofArray)
    {
        std::vector<std::string> res;
        std::size_t dim = (std::size_t)dofArray.length();
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        for (_CORBA_ULong iDof = 0; iDof < dim; iDof++)
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        {
            res.push_back(std::string(dofArray[iDof]));
        }
        return res;
    }
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    std::vector<double> doubleConversion(const hpp::floatSeq& dofArray)
    {
        std::vector<double> res;
        std::size_t dim = (std::size_t)dofArray.length();
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        for (_CORBA_ULong iDof = 0; iDof < dim; iDof++)
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        {
            res.push_back(dofArray[iDof]);
        }
        return res;
    }

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    void RbprmBuilder::setFilter(const hpp::Names_t& roms) throw (hpp::Error)
    {
        bindShooter_.romFilter_ = stringConversion(roms);
    }

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    void RbprmBuilder::setAffordanceFilter(const char* romName, const hpp::Names_t& affordances) throw (hpp::Error)
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    {
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        std::string name (romName);
				std::vector<std::string> affNames = stringConversion(affordances);
        bindShooter_.affFilter_.erase(name);
        bindShooter_.affFilter_.insert(std::make_pair(name,affNames));
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    }

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    void RbprmBuilder::boundSO3(const hpp::floatSeq& limitszyx) throw (hpp::Error)
    {
        std::vector<double> limits = doubleConversion(limitszyx);
        if(limits.size() !=6)
        {
            throw Error ("Can not bound SO3, array of 6 double required");
        }
        bindShooter_.so3Bounds_ = limits;

    }

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    double RbprmBuilder::projectStateToCOMEigen(unsigned short stateId, const model::Configuration_t& com_target) throw (hpp::Error)
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    {
        try
        {
            if(lastStatesComputed_.size() <= stateId)
            {
                throw std::runtime_error ("Unexisting state " + std::string(""+(stateId)));
            }
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            State s = lastStatesComputed_[stateId];
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            bool succes (false);
            hpp::model::Configuration_t c = rbprm::interpolation::projectOnCom(fullBody_, problemSolver_->problem(),s,com_target,succes);
            if(succes)
            {
                lastStatesComputed_[stateId].configuration_ = c;
                lastStatesComputedTime_[stateId].second.configuration_ = c;
                return 1.;
            }
            return 0;
        }
        catch(std::runtime_error& e)
        {
            throw Error(e.what());
        }
    }

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    CORBA::Short RbprmBuilder::createState(const hpp::floatSeq& configuration, const hpp::Names_t& contactLimbs) throw (hpp::Error)
    {
        model::Configuration_t config = dofArrayToConfig (fullBody_->device_, configuration);
        fullBody_->device_->currentConfiguration(config);
        fullBody_->device_->computeForwardKinematics();
        State state;
        state.configuration_ = config;
        std::vector<std::string> names = stringConversion(contactLimbs);
        for(std::vector<std::string>::const_iterator cit = names.begin(); cit != names.end(); ++cit)
        {
            rbprm::RbPrmLimbPtr_t limb = fullBody_->GetLimbs().at(*cit);
            const std::string& limbName = *cit;
            state.contacts_[limbName] = true;
            const fcl::Vec3f position = limb->effector_->currentTransformation().getTranslation();
            state.contactPositions_[limbName] = position;
            state.contactNormals_[limbName] = limb->effector_->currentTransformation().getRotation() * limb->normal_;
            state.contactRotation_[limbName] = limb->effector_->currentTransformation().getRotation();

        }
        lastStatesComputed_.push_back(state);
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        lastStatesComputedTime_.push_back(std::make_pair(-1., state));
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        return lastStatesComputed_.size()-1;
    }

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    double RbprmBuilder::projectStateToCOM(unsigned short stateId, const hpp::floatSeq& com) throw (hpp::Error)
    {        
        model::Configuration_t com_target = dofArrayToConfig (3, com);
        return projectStateToCOMEigen(stateId, com_target);
    }

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    hpp::floatSeq* RbprmBuilder::generateContacts(const hpp::floatSeq& configuration,
			const hpp::floatSeq& direction) throw (hpp::Error)
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    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
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            fcl::Vec3f dir;
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            for(std::size_t i =0; i <3; ++i)
            {
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                dir[i] = direction[(_CORBA_ULong)i];
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            }
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						const affMap_t &affMap = problemSolver_->map
							<std::vector<boost::shared_ptr<model::CollisionObject> > > ();
		        if (affMap.empty ()) {
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    	        throw hpp::Error ("No affordances found. Unable to generate Contacts.");
      		  }
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            model::Configuration_t config = dofArrayToConfig (fullBody_->device_, configuration);
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            rbprm::State state = rbprm::contact::ComputeContacts(fullBody_,config,
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							affMap, bindShooter_.affFilter_, dir);
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            hpp::floatSeq* dofArray = new hpp::floatSeq();
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            dofArray->length(_CORBA_ULong(state.configuration_.rows()));
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            for(std::size_t i=0; i< _CORBA_ULong(config.rows()); i++)
              (*dofArray)[(_CORBA_ULong)i] = state.configuration_ [i];
            return dofArray;
        } catch (const std::exception& exc) {
        throw hpp::Error (exc.what ());
        }
    }

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    hpp::floatSeq* RbprmBuilder::generateGroundContact(const hpp::Names_t& contactLimbs) throw (hpp::Error)
    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
            fcl::Vec3f z(0,0,1);
            ValidationReportPtr_t report = ValidationReportPtr_t(new CollisionValidationReport);
            core::BasicConfigurationShooterPtr_t  shooter = core::BasicConfigurationShooter::create(fullBody_->device_);
            for(int i =0; i< 1000; ++i)
            {
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                core::DevicePtr_t device = fullBody_->device_->clone();
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                std::vector<std::string> names = stringConversion(contactLimbs);
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                core::ConfigProjectorPtr_t proj = core::ConfigProjector::create(device,"proj", 1e-4, 40);
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                //hpp::tools::LockJointRec(limb->limb_->name(), body->device_->rootJoint(), proj);
                for(std::vector<std::string>::const_iterator cit = names.begin(); cit !=names.end(); ++cit)
                {
                    rbprm::RbPrmLimbPtr_t limb = fullBody_->GetLimbs().at(*cit);
                    fcl::Transform3f localFrame, globalFrame;
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                    localFrame.setTranslation(-limb->offset_);
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                    std::vector<bool> posConstraints;
                    std::vector<bool> rotConstraints;
                    posConstraints.push_back(false);posConstraints.push_back(false);posConstraints.push_back(true);
                    rotConstraints.push_back(true);rotConstraints.push_back(true);rotConstraints.push_back(true);
                    proj->add(core::NumericalConstraint::create (constraints::Position::create("",fullBody_->device_,
                                                                                               limb->effector_,
                                                                                               globalFrame,
                                                                                               localFrame,
                                                                                               posConstraints)));
                    if(limb->contactType_ == hpp::rbprm::_6_DOF)
                    {
                        // rotation matrix around z
                        value_type theta = 2*(value_type(rand()) / value_type(RAND_MAX) - 0.5) * M_PI;
                        fcl::Matrix3f r = tools::GetZRotMatrix(theta);
                        fcl::Matrix3f rotation = r * limb->effector_->initialPosition ().getRotation();
                        proj->add(core::NumericalConstraint::create (constraints::Orientation::create("",fullBody_->device_,
                                                                                                      limb->effector_,
                                                                                                      fcl::Transform3f(rotation),
                                                                                                      rotConstraints)));
                    }
                }
                ConfigurationPtr_t configptr = shooter->shoot();
                Configuration_t config = *configptr;
                if(proj->apply(config) && config[2]> 0.3)
                {
                    if(problemSolver_->problem()->configValidations()->validate(config,report))
                    {
                        State tmp;
                        for(std::vector<std::string>::const_iterator cit = names.begin(); cit !=names.end(); ++cit)
                        {
                            std::string limbId = *cit;
                            rbprm::RbPrmLimbPtr_t limb = fullBody_->GetLimbs().at(*cit);
                            tmp.contacts_[limbId] = true;
                            tmp.contactPositions_[limbId] = limb->effector_->currentTransformation().getTranslation();
                            tmp.contactRotation_[limbId] = limb->effector_->currentTransformation().getRotation();
                            tmp.contactNormals_[limbId] = z;
                            tmp.configuration_ = config;
                            ++tmp.nbContacts;
                        }
                        if(stability::IsStable(fullBody_,tmp)>=0)
                        {
                            config[0]=0;
                            config[1]=0;
                            hpp::floatSeq* dofArray = new hpp::floatSeq();
                            dofArray->length(_CORBA_ULong(config.rows()));
                            for(std::size_t j=0; j< config.rows(); j++)
                            {
                              (*dofArray)[(_CORBA_ULong)j] = config [j];
                            }
                            return dofArray;
                        }
                    }
                }
            }
            throw (std::runtime_error("could not generate contact configuration after 1000 trials"));
        } catch (const std::exception& exc) {
        throw hpp::Error (exc.what ());
        }
    }

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    hpp::floatSeq* RbprmBuilder::getContactSamplesIds(const char* limbname,
                                        const hpp::floatSeq& configuration,
                                        const hpp::floatSeq& direction) throw (hpp::Error)
    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
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            fcl::Vec3f dir;
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            for(std::size_t i =0; i <3; ++i)
            {
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                dir[i] = direction[(_CORBA_ULong)i];
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            }
            model::Configuration_t config = dofArrayToConfig (fullBody_->device_, configuration);
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            model::Configuration_t save = fullBody_->device_->currentConfiguration();
            fullBody_->device_->currentConfiguration(config);
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            sampling::T_OctreeReport finalSet;
            rbprm::T_Limb::const_iterator lit = fullBody_->GetLimbs().find(std::string(limbname));
            if(lit == fullBody_->GetLimbs().end())
            {
                throw std::runtime_error ("Impossible to find limb for joint "
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                                          + std::string(limbname) + " to robot; limb not defined.");
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            }
            const RbPrmLimbPtr_t& limb = lit->second;
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            fcl::Transform3f transform = limb->limb_->robot()->rootJoint()->childJoint(0)->currentTransformation (); // get root transform from configuration
                        // TODO fix as in rbprm-fullbody.cc!!
            std::vector<sampling::T_OctreeReport> reports(problemSolver_->collisionObstacles().size());
            std::size_t i (0);
            //#pragma omp parallel for
            for(model::ObjectVector_t::const_iterator oit = problemSolver_->collisionObstacles().begin();
                oit != problemSolver_->collisionObstacles().end(); ++oit, ++i)
            {
                sampling::GetCandidates(limb->sampleContainer_, transform, *oit, dir, reports[i]);
            }
            for(std::vector<sampling::T_OctreeReport>::const_iterator cit = reports.begin();
                cit != reports.end(); ++cit)
            {
                finalSet.insert(cit->begin(), cit->end());
            }
            hpp::floatSeq* dofArray = new hpp::floatSeq();
            dofArray->length((_CORBA_ULong)finalSet.size());
            sampling::T_OctreeReport::const_iterator candCit = finalSet.begin();
            for(std::size_t i=0; i< _CORBA_ULong(finalSet.size()); ++i, ++candCit)
            {
              (*dofArray)[(_CORBA_ULong)i] = (double)candCit->sample_->id_;
            }
            fullBody_->device_->currentConfiguration(save);
            return dofArray;
        } catch (const std::exception& exc) {
        throw hpp::Error (exc.what ());
        }
    }

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    hpp::floatSeqSeq* RbprmBuilder::getContactSamplesProjected(const char* limbname,
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                                        const hpp::floatSeq& configuration,
                                        const hpp::floatSeq& direction,
                                        unsigned short numSamples) throw (hpp::Error)
    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
            fcl::Vec3f dir;
            for(std::size_t i =0; i <3; ++i)
            {
                dir[i] = direction[(_CORBA_ULong)i];
            }
            model::Configuration_t config = dofArrayToConfig (fullBody_->device_, configuration);
            fullBody_->device_->currentConfiguration(config);

            sampling::T_OctreeReport finalSet;
            rbprm::T_Limb::const_iterator lit = fullBody_->GetLimbs().find(std::string(limbname));
            if(lit == fullBody_->GetLimbs().end())
            {
                throw std::runtime_error ("Impossible to find limb for joint "
                                          + std::string(limbname) + " to robot; limb not defined.");
            }
            const RbPrmLimbPtr_t& limb = lit->second;
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            fcl::Transform3f transform = limb->octreeRoot(); // get root transform from configuration
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                        // TODO fix as in rbprm-fullbody.cc!!
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            const affMap_t &affMap = problemSolver_->map
                        <std::vector<boost::shared_ptr<model::CollisionObject> > > ();
            if (affMap.empty ())
            {
                throw hpp::Error ("No affordances found. Unable to interpolate.");
            }
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            const model::ObjectVector_t objects = contact::getAffObjectsForLimb(std::string(limbname), affMap,
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                                                                       bindShooter_.affFilter_);

            std::vector<sampling::T_OctreeReport> reports(objects.size());
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            std::size_t i (0);
            //#pragma omp parallel for
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            for(model::ObjectVector_t::const_iterator oit = objects.begin();
                oit != objects.end(); ++oit, ++i)
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            {
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                sampling::GetCandidates(limb->sampleContainer_, transform, *oit, dir, reports[i]);
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            }
            for(std::vector<sampling::T_OctreeReport>::const_iterator cit = reports.begin();
                cit != reports.end(); ++cit)
            {
                finalSet.insert(cit->begin(), cit->end());
            }
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            // randomize samples
            std::random_shuffle(reports.begin(), reports.end());
            unsigned short num_samples_ok (0);
            bool success(false);
            model::Configuration_t sampleConfig = config;
            std::vector<model::Configuration_t> results;
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            sampling::T_OctreeReport::const_iterator candCit = finalSet.begin();
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            for(std::size_t i=0; i< _CORBA_ULong(finalSet.size()) && num_samples_ok < numSamples; ++i, ++candCit)
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            {
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                const sampling::OctreeReport& report = *candCit;
                success = false;
                State state;
                state.configuration_ = config;
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                hpp::rbprm::projection::ProjectionReport rep =
                hpp::rbprm::projection::projectSampleToObstacle(fullBody_,std::string(limbname), limb, report, fullBody_->GetCollisionValidation(), sampleConfig, state);
                if(rep.success_)
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                {
                    results.push_back(sampleConfig);
                    ++num_samples_ok;
                }
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            }
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            hpp::floatSeqSeq *res;
            res = new hpp::floatSeqSeq ();

            res->length ((_CORBA_ULong)results.size ());
            i=0;
            std::size_t id = 0;
            for(std::vector<model::Configuration_t>::const_iterator cit = results.begin();
                        cit != results.end(); ++cit, ++id)
            {
                /*std::cout << "ID " << id;
                cit->print();*/
                const core::Configuration_t& config = *cit;
                _CORBA_ULong size = (_CORBA_ULong) config.size ();
                double* dofArray = hpp::floatSeq::allocbuf(size);
                hpp::floatSeq floats (size, size, dofArray, true);
                //convert the config in dofseq
                for (model::size_type j=0 ; j < config.size() ; ++j) {
                  dofArray[j] = config [j];
                }
                (*res) [(_CORBA_ULong)i] = floats;
                ++i;
            }
            return res;
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        } catch (const std::exception& exc) {
        throw hpp::Error (exc.what ());
        }
    }

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    hpp::floatSeq* RbprmBuilder::getSamplesIdsInOctreeNode(const char* limb,
                                                           double octreeNodeId) throw (hpp::Error)
    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
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            long ocId ((long)octreeNodeId);
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            const T_Limb& limbs = fullBody_->GetLimbs();
            T_Limb::const_iterator lit = limbs.find(std::string(limb));
            if(lit == limbs.end())
            {
                std::string err("No limb " + std::string(limb) + "was defined for robot" + fullBody_->device_->name());
                throw Error (err.c_str());
            }
            const sampling::T_VoxelSampleId& sampleIds =  lit->second->sampleContainer_.samplesInVoxels_;
            sampling::T_VoxelSampleId::const_iterator cit = sampleIds.find(ocId);
            if(cit == sampleIds.end())
            {
                std::stringstream ss; ss << ocId;
                std::string err("No octree node with id " + ss.str() + "was defined for robot" + fullBody_->device_->name());
                throw Error (err.c_str());
            }
            const sampling::VoxelSampleId& ids = cit->second;
            hpp::floatSeq* dofArray = new hpp::floatSeq();
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            dofArray->length((_CORBA_ULong)ids.second);
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            std::size_t sampleId = ids.first;
            for(std::size_t i=0; i< _CORBA_ULong(ids.second); ++i, ++sampleId)
            {
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              (*dofArray)[(_CORBA_ULong)i] = (double)sampleId;
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            }
            return dofArray;
        } catch (const std::exception& exc) {
        throw hpp::Error (exc.what ());
        }
    }

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    void RbprmBuilder::addLimb(const char* id, const char* limb, const char* effector, const hpp::floatSeq& offset, const hpp::floatSeq& normal, double x, double y,
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                               unsigned short samples, const char* heuristicName, double resolution, const char *contactType, double disableEffectorCollision, double grasp) throw (hpp::Error)
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    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
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            fcl::Vec3f off, norm;
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            for(std::size_t i =0; i <3; ++i)
            {
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                off[i] = offset[(_CORBA_ULong)i];
                norm[i] = normal[(_CORBA_ULong)i];
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            }
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            ContactType cType = hpp::rbprm::_6_DOF;
            if(std::string(contactType) == "_3_DOF")
            {
                cType = hpp::rbprm::_3_DOF;
            }
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            fullBody_->AddLimb(std::string(id), std::string(limb), std::string(effector), off, norm, x, y,
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                               problemSolver_->collisionObstacles(), samples,heuristicName,resolution,cType,disableEffectorCollision > 0.5, grasp > 0.5);
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        }
        catch(std::runtime_error& e)
        {
            throw Error(e.what());
        }
    }

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    void RbprmBuilder::addLimbDatabase(const char* databasePath, const char* id, const char* heuristicName, double loadValues, double disableEffectorCollision, double grasp) throw (hpp::Error)
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    {
        if(!fullBodyLoaded_)
            throw Error ("No full body robot was loaded");
        try
        {
            std::string fileName(databasePath);
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            fullBody_->AddLimb(fileName, std::string(id), problemSolver_->collisionObstacles(), heuristicName, loadValues > 0.5,
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                               disableEffectorCollision > 0.5, grasp > 0.5);
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        }
        catch(std::runtime_error& e)
        {
            throw Error(e.what());
        }
    }
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