March 22, 2012- Sine Wave

Replies to This Discussion

Permalink Reply by Danny Boyes on March 22, 2012 at 3:18pm

Here's mine using only Native Grasshopper Components

Attachments:

• ghoffee_20120322_SineWave_Native.gh, 22 KB

Permalink Reply by Danny Boyes on March 22, 2012 at 4:34pm

Also a Script version.

I was trying to achieve it with a "For Each item in t" approach but failed miserably so I'm looking forward to any submissions along those lines.  

Attachments:

• ghoffee_20120322_SineWave_Script.gh, 22 KB

Permalink Reply by Mateusz Zwierzycki on March 22, 2012 at 4:59pm

What sine wave really is...

Attachments:

• sine wave.gh, 9 KB

Permalink Reply by Hannes Löschke on March 23, 2012 at 4:24am

Should have applied earlier, so my version wouldn't look like a ripoff of yours :D

Considering Rhino accepts 4 CPs for a circle to be a valid approximation, a sample every pi/2 should be enough. My version doesn't have phase control and length is guantized to quarter wavelenghts.... and start and end tangency needs fixing.

Attachments:

• sinewave HL.gh, 9 KB

Permalink Reply by Mateusz Zwierzycki on March 22, 2012 at 5:05pm

Beside - who will tell is drawing an exact sine wave is even possible with b-spline (low amount of control point is a must - 4-12)

Permalink Reply by Monique on March 27, 2012 at 9:15am

Great Responses. 

Danny- you win for most elegant from a scripting component

Mateusz- You definitely have the most creative interpretation. 

The “solution” I had presented was most like Danny’s. However the formula i used is: F=(sin(x*y*pi)).

 

There are three versions of the same script. As you look below you will notice how the script goes from using a small kit of nodes used repetitively to simply to using a more streamlined logic.

To some fun I decided to have.

  

Attachments:

• fun with sine wave.gh, 16 KB

Permalink Reply by Benjamin on May 23, 2012 at 9:06am

Nice. Any suggestions for making compounded sin waves, like an oscilloscope records when multiple piano keys are pressed?

http://www.math.umn.edu/~rogness/math1155/soundwaves/

Permalink Reply by Dimitrios Polychron on January 23, 2015 at 1:51pm

Here's a file of the Variable Sine Curve described above, Benjamin.

Sorry its a bit late, I just figured it could be used in the future by someone searching for a similar technique..

Attachments:

• VARIABLE SIN CURVE.gh, 3 KB

Permalink Reply by pietro pec on October 17, 2017 at 12:41am

...and how do you make a non- sinusoidal periodic waveform ? ( Square, Triangle, Sawtooth )