[Assaf Goldlust]

here is something that gave me a bit of a head screather. im assiming time is changing the angle of the expression by rotating the point in at the center of the unit circle, but then im ising 2*Math.PI to tell him how many rotation to do per 1 second.
but if time is changing the angle by making the point rotate and the frequency make it go faster, dosn’t have any kind of effect of how many complete rotation he does in a second?

[Assaf Goldlust]

dont worry about it, you were still a great help. thank you!

[Assaf Goldlust]

now its make sense. the Math.PI in this case is radius and not the diameter.

this the “*2” opertation is included

[Assaf Goldlust]

im a little confused? according to the book im working and also inside after it tell me that PI is half a circle…

[Assaf Goldlust]

this pretty much what i did

[Assaf Goldlust]

version 5.6 i did not tracked out the headphone.

i was more concern with the reflections on the screen and subtracting will interfere with the track

[Assaf Goldlust]

found it,Thanks!

[Assaf Goldlust]

this is what im trying to figure out why

[Assaf Goldlust]

this is the quote from the boook

[Assaf Goldlust]

Actually i was able to make it work.
i dont knkw why yet but appearently its working great when im doing it on my CS6 version.
so the problem is not with the expression.

but there is another thing i wish to understand.
in the book he stated that for this expressions

my text need to have this variable

var myText = "";


but i still need to know why?