Min & Max Values

[Dan Ebberts]

For a one-dimensional property (like rotation), you could do it like this:

minVal = 15;
maxVal = 21;
w = wiggle(7,1)-value;
value + linear(w,-1,1,minVal,maxVal)

It would be a little more complex for multi-dimensional properties, but the concept is the same.

Dan

[Ruben Langedijk]

Hi Dan , Thanks for all the scripts you provide.

do you have an idea how to combine this one with your looping script?

freq = 1;
amp = 110;
loopTime = 3;
t = time % loopTime;
wiggle1 = wiggle(freq, amp, 1, 0.5, t);
wiggle2 = wiggle(freq, amp, 1, 0.5, t – loopTime);
linear(t, 0, loopTime, wiggle1, wiggle2)

[Dan Ebberts]

Try this:

minVal = 15;
maxVal = 21;
freq = 1;
amp = 110;
loopTime = 3;
t = time % loopTime;
w1 = wiggle(freq, 1, 1, 0.5, t)-value;
w2 = wiggle(freq, 1, 1, 0.5, t – loopTime)-value;
w = linear(t, 0, loopTime, w1, w2);
(minVal+maxVal)/2 + (maxVal-minVal)*w

Dan

[Mike Douglas]

Hi there, that’s a really useful expression. How would you modify it to only work for a single dimension (eg: X position)? Thanks in advance!

[Dan Ebberts]

Something like this should work:

minVal = 100;
maxVal = 200;
freq = 1;
amp = 110;
loopTime = 3;
t = time % loopTime;
w1 = wiggle(freq, 1, 1, 0.5, t)-value;
w2 = wiggle(freq, 1, 1, 0.5, t – loopTime)-value;
w = linear(t, 0, loopTime, w1, w2);
x = (minVal+maxVal)/2 + (maxVal-minVal)*w[0];
[x,value[1]]

Dan

[Mike Douglas]

Great! Thanks Dan for the quick response.

That mostly works – it loops and only affects X, but the min/max is not working. It goes outside of the parameters that I set (I set it to min 0, max 250, and it’s going both into negative numbers and above 250. Any thoughts as to why?

Thanks!

[Dan Ebberts]

It’s hard to corral wiggle() precisely. You probably need to set your limits to something like 50 and 200.

Dan

[Mike Douglas]

Thanks Dan! That’s perfect. That works just fine.

BTW, I just posted another question about a different expression I’m puzzling over. If you had a second to look it over, that’d be greatly appreciated! https://forums.creativecow.net/thread/227/34955

[Keith Endow]

Hi Dan,

I just tried using this expression but I keep coming up with an error:

minVal = 15;
maxVal = 21;
freq = 1;
amp = 110;
loopTime = 3;
t = time % loopTime;
w1 = wiggle(freq, 1, 1, 0.5, t)-value;
w2 = wiggle(freq, 1, 1, 0.5, t – loopTime)-value;

“Error: Syntaxerror: Missing ) after argument list”

w = linear(t, 0, loopTime, w1, w2);
(minVal+maxVal)/2 + (maxVal-minVal)*w

[Dan Ebberts]

Could you try posting your expression again, this time in a preformatted text box (first click the Aa at the bottom, then the </>)? When you just paste it in, things get modified. For example, your error line has the wrong character for the minus sign. That might be your problem, or it might just be an artifact of the web page formatting.