pendsphere.cpp
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	#include "pendsphere.h"
	#include "penduledesc.h"

	PendSphere::PendSphere( int id,
	const PenduleDesc *desc,
	GLModel *model,
	const QString &label, specs_t flags)

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

	}

	#include <cmath>

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

	double angle = desc->getAngle(0);
	double l = desc->getLength(0);

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

	if (id > 0)
	{
	angle = desc->getAngle(1);
	l = desc->getLength(1);
	out += {sin(angle) * l, - cos(angle) * l, 0};
	}

	return out;
	}