how do I limit a range of numbers to between 0 and 1?

scitunes

I have the accelerometer value + a constant (comes from my calibration method) and I want to limit the range of the sum of these two numbers to no less than 0 and no more than 1. So -.2 returns a value of 0 and 1.3 returns a value of 1.

Any ideas? floor? ceil?

Thanks!

Photics

You might be able to use rules to straighten things out, so if the value is less than zero just make it zero.

...and what about multipliers...

floor((abs(your-value*10))/10)

firemaplegames

Here is the Math formula to constrain a number between both an upper limit and a lower limit:

min(upper limit, max(lower limit, original number));

So in your case it would look like this (with limits of 0 and 1):

game.constrainedValue = min(1,max(0,(accelerometer value + constant)))

Hope this helps!
Joe

Photics

Heh, as I woke up this morning and realized that my formula wouldn't work. Negative numbers wouldn't become zero.

Although, I think the min and max numbers are reversed in the newer formula.

scitunes

thanks guys! I'll give this a try.

scitunes

Thanks, Joe! It seems to be working for my tilt calibration system. I appreciate it!

firemaplegames

Cool! Glad I could help!

@photics: The min() and max() are not reversed...

BarkBarkCo

firemaplegames said:
@photics: The min() and max() are not reversed...

Right. `MIN` does not "set" the low end of a range, it just selects the smallest of the listed values, while `MAX` selects the largest of the two...

Think of it this way:

`MIN` = getMin
`MAX` = getMax