Press the flag and change the sliders: a, b, c. a - resize horizontally b - resize vertically c- the number of sharp ♥it! ♥it! ♥it! ♥it! ♥it! ♥it! ♥it! ♥it! ♥it! ♥it! ♥it!
x=(acost-sin(c*t))*r y=(bsint-cos(c*t))*r + geometric transformation