Based on the Book "Keys to Infinity" - Clifford A. Pickover
This program compute the endpoint position (x,y) and (x2,y2) of each straight web chord of a circle.
Play with different parameters and see the results!
/*
Functions:
F1 - Ranunculoid : a = 6; b = 6;
F2 - Cardioid : a = 2; b = 2;
F3 - Nephroid : a = 3; b = 3;
F4 - Fishtailoid : a = 2; b = 3;
F5 - Amazingoid : a = 100; b = 100;
*/
// params: a, b, c
for (i = 0; i <= 360; i = i + paramC) {
theta = i * pi / 180.0;
x = r * Math.cos(theta);
y = r * Math.sin(theta);
/* Select another point on circle */
x2 = r * Math.cos(a * theta);
y2 = r * Math.sin(b * theta);
/* Print endpoints of each line */
x = (x * ex + dx);
y = (y * ey + dy);
x2 = (x2 * ex + dx);
y2 = (y2 * ey + dy);
drawline(x, y, x2, y2, cor);
}