## Issue about Catia curve from equation

## Issue about Catia curve from equation

(OP)

Hello everyone,

I am using Catia curve from equation to build a curve. Here is the formula for x and y:

x = R*cos(2*PI*1rad*n*t)

y = R*sin(2*PI*1rad*n*t)

So n is a parameter I defined. When n is small, the curve is a circle. However, when n is large, like n=100, it is not a circle anymore. Instead the curve is very weird.

How can I make sure that the curve is still a circle even when n is large? Because mathematically it should be a circle no matter how large n is. Any help is appreciated.

I am using Catia curve from equation to build a curve. Here is the formula for x and y:

x = R*cos(2*PI*1rad*n*t)

y = R*sin(2*PI*1rad*n*t)

So n is a parameter I defined. When n is small, the curve is a circle. However, when n is large, like n=100, it is not a circle anymore. Instead the curve is very weird.

How can I make sure that the curve is still a circle even when n is large? Because mathematically it should be a circle no matter how large n is. Any help is appreciated.

## RE: Issue about Catia curve from equation

with x and t as variables in a Law (real), and R and n as external parameters?...

regards,

LWolf

## RE: Issue about Catia curve from equation

x=20mm*cos(2*PI*1rad*40*t)

y=20mm*sin(2*PI*1rad*40*t)

z=0mm*t

I changed 40 to 100, the curve is not a circle anymore.

## RE: Issue about Catia curve from equation

## RE: Issue about Catia curve from equation

## RE: Issue about Catia curve from equation

can you post a picture when you vary z=N*t ?...

regards,

LWolf

## RE: Issue about Catia curve from equation

`x1`=25mm*cos(2*PI*1rad*100*`t`)

`y1`=25mm*sin(2*PI*1rad*100*`t`)

`z1`=0mm*`t`

The curve I got is shown below.

## RE: Issue about Catia curve from equation

did you use fog to define the laws?

could you humor me and show me a case when you vary the z

regards,

LWolf

## RE: Issue about Catia curve from equation

Do you think maybe there is some settings that I should make? The result is really weird.

## RE: Issue about Catia curve from equation

## RE: Issue about Catia curve from equation

regards,

LWolf

## RE: Issue about Catia curve from equation

## RE: Issue about Catia curve from equation

welcome to 3DExperience

Eric N.indocti discant et ament meminisse periti