#md on
'## Plotting Easter Egg With Calcpad
a = 1'- horizontal radius
b = 0.7'- vertical radius
#rad
'<!--'PlotWidth = 400', 'PlotHeight = PlotWidth', 'PlotStep = 1', ' _
PlotShadows = 1', 'PlotPalette = 4', 'PlotLightDir = 7'-->
'<table><tr><td>
x(t) = a*cos(t)
y(t) = b*(1 - 0.2*cos(t))*sin(t)
$Plot{x(t)|y(t) & -1|-1 & 1|1 @ t = 0 : 2*π}
'</td><td>
f(x; y) = b*(1 - 0.2*cos(acos(x/a)))*sin(acos(x/a))
z(x; y) = sqrt(f(x; y)^2 - y^2)
$Map{z(x; y) @ x = -1 : 1 & y = -1 : 1}
'</td></tr></table>