draw egg curves from an equation

Replies to This Discussion

Permalink Reply by hatem on June 19, 2012 at 1:46am

 when i input the equation in a f(n) component i get an error saying (Syntax error: Unknown variable encountered: x)

Permalink Reply by Danny Boyes on June 19, 2012 at 3:04am

The Expression you are using has both sides of the equation already. What you require is an expression where F={EXPRESSION} where F is the only output.

For your egg curve you need to find the y={Expression} to plug into an Fx3 component with x, a and b as inputs. x is a range of 0 to 4. when a = 4

See image below and attached definition.

Attachments:

• eggcurve.gh, 3 KB

Permalink Reply by Danny Boyes on June 19, 2012 at 3:13am

Here's my modification to add a curve through all the points

Attachments:

• eggcurve.gh, 6 KB

Permalink Reply by Johan Rooijackers on June 19, 2012 at 2:50am

Have a look at this post http://www.grasshopper3d.com/profiles/blogs/supperellipse which is based on this formula's 

You will have to feed the inputs of the formula component otherwise it collects null values, and when only a and b are variables as inputs then you x and y are unknown. to solve this add two more inputs with the names x and y (fn comp).

Permalink Reply by hatem on June 19, 2012 at 4:20am

thanks alot. you guys saved my day

Permalink Reply by Nobuo YAMAMOTO on October 25, 2015 at 6:39am

    Thank you for introducing our site about egg-shaped curve.

    However, the address of our site moved as written below.

http://www.geocities.jp/nyjp07/index_egg_E.html

    Therefor, please click the corrected address written above.

Attachments:

• n.JPG, 8 KB