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Chunking up sine waves (one quarter at a time)
Hi I am messing around with Sine waves trying to isolate various quarters of the wave phases.
I am trying to achieve a sine wave that reaches its peak then zeroes for another 3 phases i.e. just 1 quarter of the sine wave. Then I want to try and isolate the other 3 quarters. (End goal is to draw on all these quarters individually when I’m animating.)
I have drawn the kind of sine wave I’m attempting to achieve first next to some of my other attempts (charted up in excel) .
If anyone can please help me to isolate quadrants of the sine wave I would have a very nice weekend. 🙂
Picture:
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1 Reply
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Hi
I think this could work for you. You did most of the work figuring out the modulus-thing, you can just put that in an if-else.
freq = 0.25;
// sin input
phi = time*freq;
if(phi%1>0.25)
{
y=0;
}
else
{
y = -Math.sin(Math.PI*2*phi)*200;
}
y
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