#Blowing Bubble animation help? <3

68 messages · Page 1 of 1 (latest)

manic pulsar
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So I'm brand new to this kind of thing. I tried to figure this out on my own but I'm just stumped. Has anyone ever animated bubbles blowing out of a straw? I imagine I could probably pull it off if this slime was a static image, but it moves around with physics, even the straw.

I started at first with the bubbles shrunk down with zero opacity, then gathered them at the opening of the straw as a starting point, but as the straw moves the top of the straw would bounce and go in a couple different directions. Should I have the bubbles tied to the straw physics? If so going forward I imagine the bubbles would slowly grow and float off into different directions, how ever with the bubbles tied to the straw's physics they would still move in the same x/y axis as the straw.

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inland anchor
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Deformer shenanigans!

Have a bubble be rigged going upwards, then put it in a warp deformer that is in the shape of the straw. Make sure the deformer is also rigged to the same parameter even if it isn't changing positions yet. Also make sure the deformer is smaller than the range of motion of the bubble going upwards, and that the bottom of the warp deformer and the bubble line up as the bubble is going up

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Ideally you should tie the warp deformer to physics as well so that way the bubble leaves in a way that matches the motion of the straw

void fern
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you could put an invisible bubble at the straw entrance and glue all the other bubbles to it with 100% of the weight on the invisible bubble. then on the bubble floating away parameter, key the glue object itself and give it 100% effectiveness when the bubble is at the straw and 0% when it leaves the straw, so the bubble can stick to the straw but not be in the same deformers

manic pulsar
void fern
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yeh

manic pulsar
# void fern yeh

So I'm struggling a bit with distributing the glue. In order to bind the bubbles they need to be overlapping right? When I try gluing the two bubbles together, the glue mainly targets the second bubble.

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not sure if I'm doing this correctly

manic pulsar
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All the bubbles at the moment are in their own deformers and not keyed to any parameters

inland anchor
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You can change the glue strength on a parameter

manic pulsar
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How do I go about that? Very new to glue so you may have to explain it to me like I'm dumb lol

valid timber
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just an idea but
what about to make a deformer, make the bubbles [each with a rotator] to move from straw to far away inside that warp deformer
then, select that warp deformer, make a rotator parent on the tip of the straw so is always with the straw
and give physics to the warp deformer to move when the character move, making waves that will affect all the bubbles but would not stop their iddle

manic pulsar
valid timber
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1,. each buble in a rotator deformer
2.-rig the rotators for the bubles to go from the straw to far away
3.-select all buble rotators, make a warp deformer with the last option checked so it covers all point 2
4.-add physics to the warp deformer to wave when the character moves as input
5.-make a parent rotator deformer, that will be inthe tip of the straw and will have the point 3 warp deformer inside
6.-make the rotator deformer of point 5 to move with the straw

void fern
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i thought nox rayne only wanted the bubbles to be affected by the straw when it's coming out of the straw? after floating away they should not react to the straw movement at all

manic pulsar
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I thought it would give a more realistic feel if the bubbles only followed the straw until they were released from it. When they're floating in the air the body movements shouldn't effect the bubbles at all

valid timber
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mm in that case i would only change the last rotator for another warp deformer 🤔

valid timber
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kind of this effect 🤔

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void fern
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if you want to try the glue method i recommend watching yoshino's glue tutorial for a basic overview on glue. then afterwards you can key the glue item (find it in the parts panel) to the parameter and you can adjust the glue effectiveness in the inspector panel

manic pulsar
manic pulsar
valid timber
# manic pulsar Going that route, would the rotating deformers effect every single bubble? So if...

in my example
The rotator is only so the bubles always start at the straw
what gives the "wave" ilusion created by moving the source, is the warp deformer, in a low pendulum setting, as in my logic, by moving the start the end should also change, and that would be done by the warp deformer

if you going with the glue maybe is better to test until the end that method and see if its what you looking for or want to test other [[just to it doesnt get confusing in the middle]]

manic pulsar
void fern
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in your case you would want the bubbles right on top of each other and to have identical mesh when gluing, then you need to do the weight painting to give 100% influence to the bubble that will stay at the straw tip

manic pulsar
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wait.....

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I think I might have something.

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When painted red, both bubbles stay in the straw

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When I use green, I can move one of the bubbles

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Is that what you were talking about?

void fern
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you want the red where both bubbles are locked in the straw. and when you key the glue itself to a parameter, you can reduce the glue strength to 0% as the bubble leaves the straw so it's no longer attached

manic pulsar
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o.o oh!!! I think I get it! I'll try keying the glue after work tomorrow and let you know how it goes!

manic pulsar
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I think I did it!

void fern
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yeahh nice

manic pulsar
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Thank you so much!!!!

void fern
void fern
manic pulsar
manic pulsar
void fern
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the red dot is the invisible bubble that goes in the straw's deformer, the rotation deformer moves the bubble, and i did the size on the bubble artmesh. all of these + the glue are on the same parameter together

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manic pulsar
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o.o OMG that's clever! Thank you so much!

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Wait, so then mutiple anchors? Because I had all my bubbles anchored to one invisible bubble.

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And if I'm looking at it right, the weight paint should be green. I started out with red on the anchor.

void fern
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if only one bubble comes out at a time you could use the same anchor, but it would be simpler for timing an animation if every bubble has its own

the color of the paint just indicates which piece was selected first when gluing. it will not always be red or green. if you check the name of the glue item you can see which piece is red since it will be the name listed first

manic pulsar
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Gotcha! You rock, thank you so much!

void fern
manic pulsar
void fern
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rotation deformer - moves visible bubble
bubble artmesh - changes size
red anchor artmesh - changes position (it comes out of the straw a short distance while the glue % is decreasing instead of dropping to 0 instantly so the transition between when the anchor controls the bubble and when the rotation deformer controls the bubble is smoother)

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if you are having trouble adjust the bubble's scale, you may be doing it at a key on the parameter where the glue still has influence

manic pulsar
void fern
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ye the glue would prevent you from scaling the artmesh properly since scaling is just moving the vertices farther apart, which you can't if the glue is holding them in place

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so you have to do it in the part of the parameter where the bubble is no longer held by the glue

manic pulsar
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I was going into the glue tool at the top and trying to adjust the strength by the red, green, and yellow button. I didn't know you could adjust the compatibility by scrolling it down.

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that is so cool!

void fern
manic pulsar
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@void fern Sorry for the ping, but I thought you'd like to see the result!

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The bubbles have physics

void fern
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looks great!! i like how they disappear with a pop