import static util.SVGUtil.*;

public class CharLissajous {
	private final static String str[] = {  // ★
		"♩",
		"香",
		"♪",
		"川", 
		"♫",
		"大", 
		"♬",
		"学",
		"♭",
		"工", 
		"♮",
		"学",
		"♯",
		"部",
	};

	private final static int numStr = str.length;
	private static int k = 0;

	private static String nextStr() {
		String ret = str[k++];
		if (k >= numStr) {
			k=0;
		}
		return ret;
	}

	/* ここの定数を変えると形が変わる */
	private final static int A = 7;
	private final static int B = 5;
	private final static double P = PHYLLOTAXIS;

	private static double fx(double t) {  /* -1 〜 1 の範囲 */
		return Math.cos(2*A*PI*t);
	}

	private static double fy(double t, double X) {  /* -1 〜 1 の範囲 */
		return Math.sin(2*B*PI*t+X);
	}

	private static double dx(double t) {  /* fx の微分 */
		return -2*A*PI*Math.sin(2*A*PI*t);
	}

	private static double dy(double t, double X) {  /* fy の微分 */
		return 2*B*PI*Math.cos(2*B*PI*t+X);
	}

	public static void main(String[] args) {

		double fontSize = 7;                                     /* フォントサイズ */
		int num = 256;                                           /* 描く文字の総数 */
		int i;
		double radius = 40;

		start();
		rulers();
		textFont("Segoe UI Symbol", fontSize);
		pushMatrix();
		translate(centerX()-50, centerY());
		for (i=0; i<num; i++) {
			double t = (double)i / num; 
			double x = radius*fx(t), y = radius*fy(t, P);
			double angle = Math.atan2(dy(t, P), dx(t));
			fill(hsb1(i/24.0*PHI, 1, 1));
			pushMatrix();
			translate(x, y);
			rotate(angle);
			translate(-fontSize/2, fontSize/2);
			text(nextStr(), 0, 0);
			popMatrix(); 
		}
		popMatrix();
		
		fontSize = 4;
		textFont("Segoe UI Symbol", fontSize);
		radius = 24;
		
		pushMatrix();
		translate(centerX()+50, centerY()+12);
		rotate360(195);
		for (i=0; i<num; i++) {
			double t = (double)i / num; 
			double x = radius*fx(t), y = radius*fy(t, 2*P);
			double angle = Math.atan2(dy(t, 2*P), dx(t));
			fill(hsb1(i/24.0*PHI, 1, 1));
			pushMatrix();
			translate(x, y);
			rotate(angle);
			translate(-fontSize/2, fontSize/2);
			text(nextStr(), 0, 0);
			popMatrix(); 
		}
		popMatrix();
		
		finish();
	}
}