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pendulecoupl.cpp
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Thu, Dec 5, 05:00

pendulecoupl.cpp
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#include "pendulecoupl.h"
#include "descriptors/pendulec1.h"
#include "descriptors/pendulec2.h"
#include "sktools.h"
using namespace symkit;
#ifndef M_PI
#define M_PI 3.141592654
#endif
const Vector PenduleCoupl::p1 = {M_PI};
const Vector PenduleCoupl::p_prime1 = {0};
const Vector PenduleCoupl::p2 = {M_PI};
const Vector PenduleCoupl::p_prime2 = {0};
const double PenduleCoupl::l1 = 5.0;
const double PenduleCoupl::m1 = 10.0;
const double PenduleCoupl::l2= 5.0;
const double PenduleCoupl::m2 = 10.0;
PenduleCoupl::PenduleCoupl(GLModel * model)
: ParticleSystem()
{
/* initialize descriptors */
pendulec1 = new PenduleC1(p1, p_prime1, l1, m1);
pendulec2 = new PenduleC2(p2, p_prime2, l2, m2);
//pendulec2->setIntegrationOperation(EULER_CROMER);
//pendulec1->setIntegrationOperation(EULER_CROMER);
pendulec1->setOtherPendule(pendulec2);
pendulec2->setOtherPendule(pendulec1);
/* initialize particles */
pend1 = new PendParticle(pendulec1, model);
pend2 = new PendParticle(pendulec2, model);
attach(pend1);
attach(pend2);
}
PenduleCoupl::~PenduleCoupl()
{
detachAll();
/* Deleting pointers */
delete pend1;
delete pend2;
delete pendulec1;
delete pendulec2;
}
#include <QGLShaderProgram>
/* draw/render function */
void PenduleCoupl::render(render_s& args)
{
ParticleSystem::render(args);
args.shaderProgram->setAttributeValue(AttributeId::color, 1, 1, 1);
SVector<3> c1pos = pendulec1->cartesiennes() - pendulec2->cartesiennes();
glBegin(GL_LINES);
args.shaderProgram->setAttributeValue(AttributeId::vertex, ARRAY_3D_FLOAT_ARGS(SVector<3>::nullv)); // center
args.shaderProgram->setAttributeValue(AttributeId::vertex, ARRAY_3D_FLOAT_ARGS(c1pos));
glEnd();
glBegin(GL_LINES);
args.shaderProgram->setAttributeValue(AttributeId::vertex, ARRAY_3D_FLOAT_ARGS(c1pos));
args.shaderProgram->setAttributeValue(AttributeId::vertex, ARRAY_3D_FLOAT_ARGS(-pendulec2->cartesiennes()));
glEnd();
}
#include <cmath>
/* Fonction qui calcule l'énergie de l'oscillatoire
* Utile pour le debugging
*/
double PenduleCoupl::energy() const
{
double l1 = pendulec1->getl();
double m = pendulec1->getm();
double k1 = 0.5 * m * (pendulec1->getp_prime().sq_module() * l1 * l1);
double u1 = m * PenduleC::g * l1 * (1 - cos(pendulec1->getp()[0]));
double l2 = pendulec2->getl();
m = pendulec2->getm();
double k2 = 0.5 * m * (pendulec2->getp_prime().sq_module() * l2 * l2);
double u2 = m * PenduleC::g * (l1 * (1 - cos(pendulec1->getp()[0]) + l2 * (1 - cos(pendulec2->getp()[0]))));
return k1 + u1 + k2 + u2;
}

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