equation of curves

[simo]

who know a database of equation of curves (circle, elliptical curve and so on) in cylindrical and cartesian coordinate system?

thanks

Simo

 

[victory]

飞碟

球坐标

rho=20*t^2

theta=60*log(30)*t

phi=7200*t

rho=200*t

theta=900*t

phi=t*90*10

篮子

圆柱坐标

r=5+0.3*sin(t*180)+t

theta=t*360*30

z=t*5

正弦曲线

笛卡尔坐标系

x=50*t

y=10*sin(t*360)

z=0

螺旋线(Helical curve)

圆柱坐标

r=t

theta=10+t*(20*360)

z=t*3

i don't know this is what you want to have,i have more equation of curves! sl_victory@sina.com

 

[shivdeep]

hi!

for more queries go to page http://www.geocities.com/iturner2/ptepa003/ptepa003.htm

i think this will solve ur problem.



regards.

shivdeep

 

[maurya]

Dear simo

If you don't mind in giving your mail ID,I can send a mail containing some interesting content on this concept of creating Datum curves from eqaution.



regards

maurya