class Traj {
	double centerX;
	double centerY;
	double radius;
	double speed;
	double phi;
	TMarker *marker;
	static TRandom *rand;
public:
	Traj(double x, double y, double r, double s, int m) {
		if(rand == 0) rand = new TRandom();
		if(x < 0.0) x = rand->Uniform();
		if(y < 0.0) y = rand->Uniform();
		if(r < 0.0) r = 0.1*rand->Uniform() + 0.1;
		if(s < 0.0) s = 0.1*rand->Uniform();
		centerX=x; centerY=y; radius=r; speed=s; 
		phi=2.0*3.14159*rand->Uniform();
		marker = new TMarker(x,y,m);
		marker->Draw();
	}
	void draw() {
		double x=radius*cos(phi) + centerX;
		double y=radius*sin(phi) + centerY;
		marker->SetX(x);
		marker->SetY(y);
		phi += speed;
		if(phi > 2.0*3.14159) phi -= 2.0*3.14159;
	}
};
TRandom *Traj::rand=0;

void movie()
{
	printf("movie.C begun\n");
#define N 25
	Traj *t[N];

	c = new TCanvas();

	for(int i=0; i<N; ++i)
		t[i] = new Traj(-1,-1,-1,-1,21);

	for(int i=0; i<500; ++i) {
		for(int j=0; j<N; ++j)
			t[j]->draw();
		//c->Update();
		char tmp[64];
		sprintf(tmp,"m_%d.png",i);
		c->SaveAs(tmp);
	}
	delete c;
	printf("movie.C ends\n");
	gApplication->Terminate(0);
}