Ok I'm tring to understand haste, for both the current haste cap and the future 3.3 one.
WoWwiki
Casting speed - WoWWiki - Your guide to the World of Warcraft
says 32.79 haste rating= 1% haste
Also to find the % haste required to get to 1GCD it says the following equation is used
Haste = ( ( BaseCastTime / DesiredCastTime ) - 1) * 100
For example: 100% haste = ( ( 1.5s / .75s ) - 1) * 100
using that Equation to find the GCD I get the following
((1.5/1) -1) *100=50%
however from the Original poster of this thread "Norfair" (in his haste section)
it seems the amount actually required to get the the hastecap is48.6%
Wrath of Air only(it gives 5% btw)
0/5 GotE = ~42.9% Haste = ~1407 Haste Rating
1/5 GotE = ~37.12% =~1217 Haste Rating
2/5 GotE = ~31.41% =~1030 Haste Rating
3/5 GotE = ~25.71% =~843 Haste Rating
4/5 GotE = ~19.98% =~655 Haste Rating
5/5 GotE = ~14.27% =~468 Haste Rating
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This is the first problem I have, how did it go from 50% to 42.9% with just Wrath of Air Totem
Anyway assuming this amount to be accurate(the following calculattion is for 3.3, 5 Points in GotEM)
I assumed to calculate the haste cap i would first need to reduce the %s of haste we get from other sources
50%-15%-7.5%-4.5%=23%
note, 15% is from GotEM as 10% of 1.5 sec is 15%, 7.5% is the 5% of Wrath of Air totem, and 4.5% is the 3% from retri/moonkin aura
Now a fellow Resto druid told me that this is wrong because the totem and retri/moonkin aura are not additive but multiplicative, mind someone explaing this to me, because I could not understand what he meant at all.
Also I'm taking it for granted that % haste from each of these buffs/talents is increased by the fact that the GCD is 1.5ec (10% becoming 15% etc) but i dont know if they truely are increased in that way or that amount(from the original poster's number i am sure not, so how do they work than???)
anyway after finding out the % needed fully raid buffed, I'm guessing we multiply that by 32.79(haste rating for 1% haste) to find the amount needed to be haste caped.
If anyone can please explain to me these questions, I would be most grateful, please dont just give me the hastecap, I want to be able to understand how you got to that number myself. TY anyone who takes there time to read this.