Rhino.h

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//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
 
#ifndef RL_KIN_RHINO_H
#define RL_KIN_RHINO_H
 
#include "Kinematics.h"
 
namespace rl
{
    namespace kin
    {
        class Rhino : public Kinematics
        {
        public:
            enum Arm
            {
                ARM_LEFT = -1,
                ARM_RIGHT = 1
            };
            
            enum Elbow
            {
                ELBOW_ABOVE = 1,
                ELBOW_BELOW = -1
            };
            
            Rhino();
            
            virtual ~Rhino();
            
            virtual Kinematics* clone() const;
            
            Arm getArm() const;
            
            Elbow getElbow() const;
            
            bool inversePosition(
                const ::rl::math::Transform& x,
                ::rl::math::Vector& q,
                const ::std::size_t& leaf = 0,
                const ::rl::math::Real& delta = ::std::numeric_limits< ::rl::math::Real>::infinity(),
                const ::rl::math::Real& epsilon = 1.0e-3f,
                const ::std::size_t& iterations = 1000
            );
            
            void parameters(const ::rl::math::Vector& q, Arm& arm, Elbow& elbow) const;
            
            void setArm(const Arm& arm);
            
            void setElbow(const Elbow& elbow);
            
        protected:
            
        private:
            template<typename T> T atan2(const T& y, const T& x) const
            {
                T a = ::std::atan2(y, x);
                return (::std::abs(a) <= 1.0e-6f) ? 0.0f : a;
            }
            
            template<typename T> T cos(const T& x) const
            {
                T c = ::std::cos(x);
                return (::std::abs(c) <= 1.0e-6f) ? 0.0f : c;
            }
            
            template<typename T> T sin(const T& x) const
            {
                T s = ::std::sin(x);
                return (::std::abs(s) <= 1.0e-6f) ? 0.0f : s;
            }
            
            Arm arm;
            
            Elbow elbow;
        };
    }
}
 
#endif // RL_KIN_RHINO_H