Decreasing Sine wave amplitude

Replies to This Discussion

Permalink Reply by Joseph Oster on June 7, 2017 at 10:40am

"A" and "B"?  If you have the 't' values for each point along the re-parameterized base curve, you can use their proximity to the ends to reduce the effect of the sine curve.  Without your code, anything more than that is too much effort.

Permalink Reply by Joseph Oster on June 7, 2017 at 11:22am

Something like this:

Attachments:

• tVals_2017Jun7a.gh, 13 KB

Permalink Reply by Hyungsoo Kim on June 7, 2017 at 11:15am

Hi.

Check attachment. If you do not want to use graph mapper, then fix the fomula, otherwise you can have more control over your sine wave.

Attachments:

• SinCurveDiminished.gh, 11 KB

Permalink Reply by Hyungsoo Kim on June 7, 2017 at 11:28am

Can remove redandunt nurbs curve & division step..

Permalink Reply by Roman on June 7, 2017 at 12:41pm

Hey Guys!
Thank you so much. It should work I will try it first thing as soon as get back to my laptop.
Cheers

Permalink Reply by Roman on June 7, 2017 at 1:41pm

Ok, so the problem I have is that my parabola is built as two symmetrical parts.

I am building a sine wave as two separate curves as well so I can start from the centre of the parabola.

Then I join two sine waves in one. Now I want to apply the graph Hyungsoo Kim suggested.

Is there a way to apply a graph to two parts of a sine wave?

Please see screen shots.

Attachments:

• Screen Shot 2017-06-07 at 20.37.18.png, 216 KB
• Screen Shot 2017-06-07 at 20.39.01.png, 484 KB

Permalink Reply by Roman on June 8, 2017 at 5:02am

Hi Hyungsoo,

Your approach does work. But because I have two symmetrical curves how can I change one of them so the amplitude is increases from the centre?

It should be easy somehow to reverse the effect ?

Please see attached images.

Thank you

Attachments:

• SDevelop in17060811570 copy.pdf, 259 KB
• Screen Shot 2017-06-08 at 11.48.47.png, 909 KB

Permalink Reply by Hyungsoo Kim on June 8, 2017 at 6:59am

There's no solution I can give you from your screen grabs.