SUMMARY
This is for people to bookmark and quick-reference in the future. Skip this part if you're new to this.
LEVEL 85, PATCH 4.0.6 Cataclysm
Haste %'s:
Dark Intent = 3% Self buff
Raid = 5% Aura
Goblins = 1% racial
1 Haste = 128.05701 Rating
Negative values in tables below means you get this extra tick automatically with zero haste rating
IMMOLATE & UA: Haste required for extra ticks:
1 Tick = 10%
2 Ticks = 30%
3 Ticks = 50%
4 Ticks = 70%
5 Ticks = 90%
Note: +2 Ticks should be Destruction's T11 haste goal for the extra Immolate tick giving you +800 dps or more from Conflag.
Code:
Unbuffed Dark Intent Only Raid + Dark Intent Raid + Dark Intent + Goblin
0.1 1280.5701 870.2903592 219.0526755 90.09471827
0.3 3841.7103 3356.834243 2587.189707 2434.784849
0.5 6402.8505 5843.378126 4955.326739 4779.474979
0.7 8963.9907 8329.92201 7323.463771 7124.16511
0.9 11525.1309 10816.46589 9691.600803 9468.855241
e
CORRUPTION: Haste required for extra ticks:
1 Tick = 8.334%
2 Ticks = 25%
3 Ticks = 41.667%
4 Ticks = 58.334%
5 Ticks = 75%
Code:
Unbuffed Dark Intent Only Raid + Dark Intent Raid + Dark Intent + Goblin
0.08333 1067.141323 663.0779545 21.7075281 -105.2965167
0.25 3201.42525 2735.198272 1995.155449 1848.612316
0.41667 5335.708793 4807.318216 3968.603015 3802.520797
0.58333 7469.992246 6879.438074 5942.050499 5756.429197
0.75 9604.27575 8951.557981 7915.498029 7710.337643
e
AGONY: Haste required for extra ticks:
1 Tick = 4.167%
2 Ticks = 12.5%
3 Ticks = 20.834%
4 Ticks = 29.167%
5 Ticks = 37.5%
6 Ticks = 45.834%
7 Ticks = 54.167%
8 Ticks = 62.5%
9 Ticks = 70.834%
10 Ticks = 79.167%
11 Ticks = 87.5%
Code:
Unbuffed Dark Intent Only Raid + Dark Intent Raid + Dark Intent + Goblin
0.04167 533.6135607 145.0898356 -471.6144899 -593.7341583
0.125 1600.712625 1181.108345 515.0698044 383.1809846
0.20834 2667.939746 2217.251181 1501.872506 1360.213362
0.29167 3734.996168 3253.228289 2488.51737 2337.089466
0.375 4802.137875 4289.288199 3475.241094 3314.043648
0.4583 5868.852768 5324.933727 4461.570168 4290.607087
0.54167 6936.464061 6361.449544 5448.72809 5267.991168
0.625 8003.563125 7397.468053 6435.412384 6244.906311
0.70833 9070.700606 8433.523861 7422.132201 7221.856624
0.79167 10137.85089 9469.592101 8408.863858 8198.818661
0.875 11204.98838 10505.64791 9395.583674 9175.768974
e
Clip all dots except Bane of Agony with between 0.1 and 1 second remaining for maximum dps. Bane of Agony should be allowed to expire before recasting.
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HASTE
The math on this is quite simple, but the idea is slightly complicated.
Haste on a DoT does two things. First, it reduces the time between ticks. With 0 Haste, Corruption, UA and Immolate tick every 3 seconds. If you add Haste to the equation, the time between ticks functions just like a spell cast:
New Spell Cast Time = OLD CAST TIME / (1 + Haste %)
Example: UA w/ 10% Haste
3 / 1.1 = 2.73s
Example: UA w/ 23.5% Haste
3 / 1.235 = 2.43s
Very straightforward. Now the slightly complicated part. By shortening the time between ticks, you also shorten the length of the DoT. However, Blizzard has thought of this and provided a solution: at certain values of haste, your dot's gain extra ticks by rounding.
First, take the hasted tick time and see how many would fit into the full duration of the spell. Let's use 5% on Immolate as an easy example.
Immolate: 15s duration, 3s ticks
3s / 1.05 = 2.86s Ticks Hasted
15s / 2.86s = 5.24 Ticks per Immolate
5.24 rounds down to 5 ticks, and thus you have a shorter immolate (2.86 x 5 ticks = 14.3s duration instead of 15). When the decimal places reaches X.500000 or greater, you gain an extra tick because it rounds up.
When do we hit the magic round up number? Easy to find out! Let's say we want 6 ticks. The earliest we could get this is 5.500000 ticks per Immolate.
15s duration / 5.5 ticks = 2.7272727s hasted ticks
3s base ticks / 2.7272727s hasted ticks = 10% Haste
The first magic number is 10%, and repeating this process for 7 ticks (6.5) you get 30%, and it continues at 50%, 70%, 90%, etc.
This is your gearing goal - hit +1 tick on your dots, or more. If you can set up your gear to push yourself over this number, it is a dps increase.
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CLIPPING
Clipping used to be a big no-no because it meant you lost 20% or more of the value of your DoT and reduced your uptime as a result. This is no longer the case, and providing you know when to clip it can be a large dps increase.
The new mechanics are very simple. The current tick (not the dot) has a certain amount of time before it damages the target - this is just added to the end of the new dot. It works best if I give examples, so here you go:
Assume zero haste to make this easier
Clipping Corruption at 0s remaining = new 18s Corruption with the first tick occurring at 15s remaining.
Clipping Corruption at 1s remaining = new 19s Corruption with the first tick occurring at 18s remaining.
Clipping Corruption at 2s remaining = new 20s Corruption with the first tick occurring at 18s remaining.
You see how your Corruption grew in length to accommodate the remaining time? This ensures 100% uptime on your dots and provides a large dps increase over letting your dots fall off. The important part is that this only applies to ONE tick. Here's an example:
Clipping Corruption at 3s remaining = new 18s Corruption with the first tick occurring at 15s remaining.
Clipping Corruption at 4s remaining = new 19s Corruption with the first tick occurring at 18s remaining.
Clipping Corruption at 5s remaining = new 20s Corruption with the first tick occurring at 18s remaining.
We had 2 ticks remaining, but it only brought one back with it. This is to prevent people from casting Corruption 10 times for a 180 second DoT.
So the moral of the story is: You can clip your DoT's during the last tick and suffer zero dps loss. Any earlier and you're losing a lot of damage.
Note: Bane of Agony is unique - never clip it because the biggest ticks happen at the end, and you'd lose those.
---------- Post added 2010-12-14 at 10:25 AM ----------
Also a good read for those of you who are visual learners:
http://cynwise.wordpress.com/2010/10...-in-cataclysm/