ISSPlanar3Link.cpp

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 Copyright (c) 2020, Fabio Muratore, Honda Research Institute Europe GmbH, and
 Technical University of Darmstadt.
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#include "ISSPlanar3Link.h"

#include <Rcs_macros.h>
#include <Rcs_typedef.h>

namespace Rcs
{

ISSPlanar3Link::ISSPlanar3Link(RcsGraph* graph) : InitStateSetter(graph)
{
    // Grab direct references to the used bodies
    link1 = RcsGraph_getBodyByName(graph, "Link1");
    link2 = RcsGraph_getBodyByName(graph, "Link2");
    link3 = RcsGraph_getBodyByName(graph, "Link3");
    RCHECK(link1);
    RCHECK(link2);
    RCHECK(link3);
}

ISSPlanar3Link::~ISSPlanar3Link()
{
    // Nothing to destroy
}

unsigned int ISSPlanar3Link::getDim() const
{
    return 3;
}

void ISSPlanar3Link::getMinMax(double* min, double* max) const
{
    // Joint angles [rad] (velocity stays on default)
    min[0] = RCS_DEG2RAD(10.);
    max[0] = RCS_DEG2RAD(10.);
    min[1] = RCS_DEG2RAD(10.);
    max[1] = RCS_DEG2RAD(10.);
    min[2] = RCS_DEG2RAD(10.);
    max[2] = RCS_DEG2RAD(10.);
}

std::vector<std::string> ISSPlanar3Link::getNames() const
{
    return {"q1", "q2", "q3"};
}

void ISSPlanar3Link::applyInitialState(const MatNd* initialState)
{
    // Get the relative joint angles
    double q1_init = initialState->ele[0];
    double q2_init = initialState->ele[1];
    double q3_init = initialState->ele[2];
    
    // Set the position to the links's rigid body joints
    graph->q->ele[link1->jnt->jointIndex] = q1_init;
    graph->q->ele[link2->jnt->jointIndex] = q2_init;
    graph->q->ele[link3->jnt->jointIndex] = q3_init;
    
    // Update the forward kinematics
    RcsGraph_setState(graph, graph->q, graph->q_dot);
}
    
} /* namespace Rcs */