laser_tunnel/laser_tunnel.pde

/*
	Alors petit programe du jour:
		* On a une liste de point.
		* On l'affiche a l'ecran.
		* on format une chaine de charactere pour l'afficher avec le laser
		* 
		* On definie des courbe de bezier
		* On affiche un tunnel
		* Il faudra un truc pour definir
		* 

		* ===
		* Il nous faut une structure de segment [{pos_x, pos_y, color}, {pos_x, pos_y, color}]
		* Un tableau de
		* 
*/

Point[] c1, c2, c3, c4;

LaserOut	laser_frame;

// evite de metre un nombre de point negatif
Point[] create_circle(float center_x, float center_y, float radius, int nb_point, int col){
	Point[]	line = new Point[nb_point + 1];
	float	px, py, factor;

	for (int i = 0; i < line.length; i++){
		factor = float(i) / float(line.length - 1);
		px = center_x + radius * cos(factor * TWO_PI);
		py = center_y + radius * sin(factor * TWO_PI);
		line[i] = new Point(int(px), int(py), col);
	}
	return (line);	
}

Point[]	create_tunnel_line(float center_x, float center_y, float radius, float distance, int id, int nb_point, float prct_anime, int col){
	Point[]	line = new Point[nb_point + 1];
	float	px, py, factor, r;

		//r = int(float(radius) / get_distance(i, nb_circle, distance, prct_anime));

	factor = float(id) / float(nb_point);
	for (int i = 0; i < line.length; i++){
		r = int(radius / get_distance(i, nb_point, distance, prct_anime));
		px = center_x + r * cos(factor * TWO_PI);
		py = center_y + r * sin(factor * TWO_PI);
		line[i] = new Point(int(px), int(py), col);
	}
	return (line);
}

void setup() {
	size(800, 800);
	background(0);
	// ...

//	circle = create_circle(400, 400, 70, 25);
	laser_frame = new LaserOut();
}

int		getColInt(int r, int g, int b){
	int	col;

	col = ((r & 0xFF) << 16) | ((g & 0xFF) << 8) | ((b & 0xFF));
	return (col);
}

void draw_circle_test(){
	int		rad, radm, nb_point;
	float	cx, cy;
		
	nb_point = 25;
	rad = 40;
	radm = rad / 2;
	cx = 400;
	cy = 400;

	c1 = create_circle(       cx,        cy, rad, nb_point, getColInt(255, 255, 255));
	c2 = create_circle(cx - radm, cy - radm, rad, nb_point, getColInt(  0, 255,   0));
	c3 = create_circle(cx + radm, cy - radm, rad, nb_point, getColInt(  0,   0, 255));
	c4 = create_circle(       cx, cy + radm, rad, nb_point, getColInt(255,   0,   0));

	// ajoute une chaine de charactere a la frame + dessine sur processing
	laser_frame.add_line(c1); 
	laser_frame.add_line(c2); 
	laser_frame.add_line(c3); 
	laser_frame.add_line(c4); 

}

float	get_distance(int id, int max_id, float distance, float prct_anime){
	float	dist;

	dist = distance * (((float(id) / float(max_id)) + prct_anime) % 1.0);
	return (dist + 0.03);
}

void	draw_tunel(int time_milis){
	// on va tracer des crecle qui vont se raprocher et des ligne sur ces cercle
	// plus les cercle sont loin plus les cercle on un radius petit

	// on va aussi tracer des cercle

	int		nb_circle = 15;
	int		time_periode = 20 * 1000; // 10 seconde
	float	distance = 1;
	float	prct_anime = 5 - (float(time_milis % time_periode) / float(time_periode));
	int		pt_per_circle = 15;

	// position du cercle
	// radius
	int	cx, cy, radius, r;

	cx = 400;
	cy = 400;
	radius = 30;


	// on dessine les cercle
	for (int i = 0; i < nb_circle; i++){
		r = int(float(radius) / get_distance(i, nb_circle, distance, prct_anime));

		laser_frame.add_line(create_circle(cx, cy, r, pt_per_circle, getColInt(255, 255, 255)));
	}

	// on dessine les ligne qui vont avec
	for (int i = 0; i < pt_per_circle; i++){
		laser_frame.add_line(create_tunnel_line(cx, cy, radius, distance, i, pt_per_circle, prct_anime, getColInt(255, 255, 255)));
	}
}

void draw(){
	background(0);
	draw_tunel(millis());
	laser_frame.print_frame();
}