pendulersphere.cpp
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	#include "pendulersphere.h"
	#include "penduleressortdesc.h"

	PendrSphere::PendrSphere(unsigned int id,
	const PenduleRessort *desc,
	GLModel *model,
	const QString &label, specs_t flags)

	: Shape(model, label, flags), id(id), desc(desc)
	{

	}

	#include <cmath>

	SVector<3> PendrSphere::position() const
	{
	SVector<3> out;

	// position si ressort
	double position = desc->getp()[0];

	out += { position, 0, 0};

	// position si pendule
	if (isPendule())
	{
	double angle = desc->getp()[1];
	double l = desc->getLenght();

	out += {sin(angle) * l, - cos(angle) * l, 0};
	}

	return out;
	}

	bool PendrSphere::isPendule() const
	{
	return id > 0;
	}