WoW Animation Experiments/Tests

[zork]

Has any of you worked with the WoW animation API and can share some of the experiments/tests?

http://wow.curseforge.com/addons/blackbox/
http://www.wowace.com/addons/librecursiveanim-1-0/
https://code.google.com/p/rothui/sou...ameRotater.lua

I checked the wow addon code. Lua wise only the TutorialFrame has some animation groups. But thankfully the XML has a ton of <AnimationGroup> examples.

The following have a tag that starts with "<Rotation"



Why I'm asking this is the following. I want to create a frame with a set of textures. I want to rotate that frame by a specific degree based on an event.

The degree change should be tweened by using the animation.

My question is. When the animation is stopped. What will happen to the frame and the textures inside?

[Duugu]

Stop() will end the animation and the frame/textures will be set to their initial state.
Pause() will pause the animation in its current state.

That's what I am using in BAB Bars to 'permanently rotate' the button frames. A rotation animation that is paused 0.00001 secs after it starts.

[Resike]

Is it possible to rotate the frame itself properly with all of it's children? I would be very intrested about how to do that.

[Duugu]

Originally Posted by Resike Is it possible to rotate the frame itself properly with all of it's children? I would be very intrested about how to do that.

Theoretically

As the rotation animation is kind of broken it will fail in scenarios like fontstring childs, backdrops, and others.

Just apply the animation to the parent Frame.

[zork]

Hmmm. So with Pause() you can freeze the frame. Is there a way where you can set a rotation duration and pause it right before it ends?

I guess when the duration is over it will just Stop() itself.

There is OnFinished though. But I think that is to late.

Basically I want a smooth animation from A --> B and pause it right before it reaches B.

[Resike]

Originally Posted by zork Hmmm. So with Pause() you can freeze the frame. Is there a way where you can set a rotation duration and pause it right before it ends? I guess when the duration is over it will just Stop() itself. There is OnFinished though. But I think that is to late. Basically I want a smooth animation from A --> B and pause it right before it reaches B.

There is a rotation widget which might be what you want, however i've never played it with yet:

http://wowprogramming.com/docs/widge...ion/SetDegrees

[zork]

Yes that is the widget I'm going to use.

Since I only use one type of animation (rotation) I could play/pause/stop the animation itself. Not the full animationgroup.

AnimationGroup Widget API
http://wowprogramming.com/docs/widgets/AnimationGroup

I could track the animation/animationgroup progress via the OnUpdate handler.

But I may have a better idea. I could set the animation to "REPEAT" and use OnLoop.

http://wowprogramming.com/docs/scripts/OnLoop

Inside the OnLoop I could Pause() the animation after one cycle.

Later I can apply new degrees and Play() the animation again. The question is will the animation be persistant.

[Duugu]

Originally Posted by zork Hmmm. So with Pause() you can freeze the frame. Is there a way where you can set a rotation duration and pause it right before it ends? I guess when the duration is over it will just Stop() itself. There is OnFinished though. But I think that is to late. Basically I want a smooth animation from A --> B and pause it right before it reaches B.

Yes, there is a way:

t.ag = t:CreateAnimationGroup()
t.a1 = t.ag:CreateAnimation("Rotation")
t.a1:SetDuration(1)
t.a1:SetEndDelay(10)
t.a1:SetScript("OnUpdate", function(self, elapsed) if self:IsPlaying() then if self:IsDelaying() then self:Pause() end end end)    
t.a1:SetDegrees(90)
t.ag:Play()

The point is that there are two timeframes for each animation. First the animation plays for SetDuration seconds from its initial state to its final state. Then the animated object remains in its final state for SetEndDelay seconds.

The trick is to pause the animation during the end delay period. The it remains in its 'end' animation state until the animation is really stopped via Stop().

[e]
OnFinish is to late, yes. If the event Triggers the object is already resetted to its initial state.

[Resike]

Originally Posted by Duugu Theoretically As the rotation animation is kind of broken it will fail in scenarios like fontstring childs, backdrops, and others. Just apply the animation to the parent Frame.

What i would like to do is to rotate a simple frame, and use the rotated frames boundaries for the OnEnter and OnLeave scripts:

local t = CreateFrame("Frame", nil, UIParent)
t:SetPoint("Center", UIParent, "Center", 0, 0)
t:SetSize(100, 100)
t.texture = t:CreateTexture(nil, "Overlay")
t.texture:SetTexture("Interface\\Buttons\\White8x8.blp")
t.texture:SetAllPoints(t)
 
t.ag = t:CreateAnimationGroup()
t.a1 = t.ag:CreateAnimation("Rotation")
t.a1:SetDuration(1)
t.a1:SetEndDelay(10)
t.a1:SetScript("OnUpdate", function(self, elapsed)
    if self:IsPlaying() then
        if self:IsDelaying() then
            self:Pause()
        end
    end
end)    
t.a1:SetDegrees(45)
t.ag:Play()
 
t:SetScript("OnEnter", function(self)
    print("OnEnter")
end)
 
t:SetScript("OnLeave", function(self)
    print("OnLeave")
end)

But it doesn't seems to work.

[Duugu]

Originally Posted by Resike What i would like to do is to rotate a simple frame, and use the rotated frames boundaries for the OnEnter and OnLeave scripts: But it doesn't seems to work.

As far as I know that's impossible.

The rotate animation ignores clickable areas. To be honest ... I do believe the animation ignores the parent frame itself at all and the rotation is applied to ALL of its elements (like backdrops) and childs (like textures) only.

Whatever the reason is - I couldn't find a way to rotate a clickable area.
As I wrote ... the feature is more or less broken.

[e]
I was working on a workaround for this a while ago but never finished it.
The idea was to make the frame non-clickable and to (internaly) fill the rotated frame with the required number of non-rotated invisible clickable frames each having a clickable area and to map the events to the main frame.

See this post: http://www.wowinterface.com/forums/s...light=triangle

[Resike]

Originally Posted by Duugu As far as I know that's impossible. The rotate animation ignores clickable areas. To be honest ... I do believe the animation ignores the parent frame itself at all and the rotation is applied to ALL of its elements (like backdrops) and childs (like textures) only. Whatever the reason is - I couldn't find a way to rotate a clickable area. As I wrote ... the feature is more or less broken. [e] I was working on a workaround for this a while ago but never finished it. The idea was to make the frame non-clickable and to (internaly) fill the rotated frame with the required number of non-rotated invisible clickable frames each having a clickable area and to map the events to the main frame. See this post: http://www.wowinterface.com/forums/s...light=triangle

It's possible to create a polynom and find if a point inside the polynom or not via an update script, but it's not worth the hassle to use it, and goes strong on the resources with fps like update speed:

local x, y = -0.5, 0.5
 
local p = {
    [1] = {x = 0, y = 0},
    [2] = {x = -1, y = 0},
    [3] = {x = -1, y = 1},
    [4] = {x = 0, y = 1}
}
 
function PointInPolynom(p, x, y)
    local c = false
    for i = 1, #p do
        local j = i + 1
        if j > #p then
            j = 1
        end
        if ((p[i].y > y) ~= (p[j].y > y)) and (x < (p[j].x - p[i].x) * (y - p[i].y) / (p[j].y - p[i].y) + p[i].x) then
            c = not c
        end
    end
    return c
end

[Duugu]

Originally Posted by Resike It's possible to create a polynom and find if a point inside the polynom or not via an update script, but it's not worth the hassle to use it, and goes strong on the resources with fps like update speed:

Thats true. Thanks for the code. In my case it was about clickable secure frames/buttons so I couldn't use such an approach. :/

[Resike]

Originally Posted by Duugu Thats true. Thanks for the code. In my case it was about clickable secure frames/buttons so I couldn't use such an approach. :/

I also wrote a polynom in polynom code, if someone might need something similar in the future:
It can be used for collision detection too.

function PolynomInPolynom(p1, p2)
    local c = { }
    for i = 1, #p2 do
        c[i] = false
        for j = 1, #p1 do
            local k = j + 1
            if k > #p1 then
                k = 1
            end
            if ((p1[j].y > p2[i].y) ~= (p1[k].y > p2[i].y)) and (p2[i].x < (p1[k].x - p1[j].x) * (p2[i].y - p1[j].y) / (p1[k].y - p1[j].y) + p1[j].x) then
                c[i] = not c[i]
            end
        end
        if c[i] then
            return true
        end
    end
    return false
end