See the newest version: SC-2.0 http://scratch.mit.edu/projects/DarthPickley/1748672 (really, it is about twice as usable, with double the features and draws in half the time! It has features allowing it to be used in flash player too!) ------------------- this version does not register zeroes in the input of formulas in flash player, and is slow in java player, and even if you download, version 2.0 has way more useful features than this. type in the parametric expressions in terms of T and watch the calculator draw it! other commands: clear set T min set T max set T step reset for more info about parametric equations, see: http://en.wikipedia.org/wiki/Parametric_equation Based on Paddle2See's calculator scripts things to try: sinusoids: circle: X= 50*sin(T) Y= 50*cos(T) ellipse: X= 100*sin(T) Y= 20*cos(T) Lissajous figure: X= 100*sin(T*5) Y= 100*cos(T*3) coil/helix: X= 100*sin(T) Y= 100*cos(T)+T now here are some more interesting sinusoids: heart shape: X= 100*sin(T)^3 Y= 100*(cos(T)-cos(T)^4) CyberKnight thing (two sets of equations): X1= 50*(sin(T)+sin(T)^3) Y1= 100*cos(T)+ 25*(abs cos T -1.5)^4 X2= 75*sin T Y2= cos(T)*25-cos(2*T)*25/3+10
