All language subtitles for 13. Adding Streaming Particles to Beam

hi everyone

welcome to our course in creating projectile weaponry

in nuke in this class

we're gonna continue creating our alternate beam look

and continue with that

so last week

we created the actual beam part of our beam effect

and we had our beam that we had here

this class we're going to add some extra

layers and elements to this to make it look pretty cool

so our first thing we're gonna be bringing in

to help along this beam effect is some particles so

we're gonna bring in a particle node called P streaky

it's a note that's um

it's a note as well

it's a particle note that's within Nuke X and it's a

it's a base note that comes standard with

the Nuke X package

um I'll bring that in

okay I can't find it through my tab

so I'm just gonna bring it in through here

so yeah there it is

it's in the tool set under particles

and it's called P streaky that's what we want

so if we view this

what we see is uh

takes us to our 3D viewed

and we can see that there are um

it's like a trail

trail lighting effect almost

almost like adding a time blur to

a moving particle or something

it leaves a nice long trail

so I'll let this kind of render through and play

so you can see what this is doing

so this is a nice little effect

I like to use to add to some of my beam effects it's

I really like it

really kind of makes it look cool

and it's a bit something different as well

you don't you know

this is doing a lot of these

projectile effects for various SCI fi shows

a lot of them can become very repetitive

look a lot the same

very similar

this is something that's a bit of a variation

on what you would see on TV or in a movie

so with this P

streaking note

we're gonna basically

what we want to do is we want to create the look

and we want to set it up on top of our 2D comp

so first what we'll do is we'll set up the camera

and our scan line render

so I'll bring in a camera node

these are all the things you need

to create anything in 3D

scan line renderer

hook that up to our camera

so

because this is a static image

static shot

we want to set up the camera to

to emulate where this beam would be

so I like to go back to my plate

and just kind of think from a 3D perspective

if I if I the person looking at this in the camera

where would my effect go

so it's gonna be more of a head on

straight on look at the effect

and you can just layer it over

and it should work just fine

so to me

it's gonna work by placing our camera somewhere

somewhere around here

we can look directly through our creative camera

and that will give us our

an idea of how we're

how we're looking and how we're gonna be viewing this

into the side

so I can probably

this is actually probably fine like this

cause we can always just um

transform it into the

and rotate it and adjust it into place into the

after the fact

I will go ahead though and just go

smooth this back a bit more something like that

yeah it works

alright so for this effect we're gonna want to

I wanna create

I like the look of what we're seeing now

I just wanna make them faster

and see if maybe

I wanna emit more particles or less particles

so while it's playing

it's gonna go into our parameters

note here for our P streaky

and start adjusting a few things

so the rate of emission

like I'll leave is 1

our emit threshold

I'll leave is point seven five

our velocity

I'll play with the increase

particles are very heavy

so it takes a lot of time to view them

so you gotta be a lot

be very patient when you're working with uh particles

one of the things that you'll find with particles is

there's a lot of push and pull for

so for something like this

where the higher I make the velocity

you're gonna find that

because it's moving so fast

there's more distance between each individual particle

that's why we're seeing some

gaps and spaces along the trail

so in order to balance that out

a lot of times

you're gonna wanna increase the rate of particles

and that can bog things down

so what I like to do

is to get my look working roughly here

and then either retime it

or do some things in 2D to make it work better

and it also makes it a little bit lighter

and easier to work with in a new script

so speed here is pretty good

um it's not fast enough

but the faster I make it

the more particles I'm gonna have to add

so I'm gonna leave my velocity

I'm gonna bring it down just to touch

just wanna get rid of some of the gaps

in between the particles there

so I think somewhere around here is pretty good

all the other parameters can be left alone

so yeah we'll just we'll just go with that

so now that we have these nodes set up here

what we're gonna do is

we're gonna bring this into 2D now

alright and we're going to add a re time note to this

to make it faster to speed up the uh

the look of it

so we have our re time here now

attached to our scanline renderer

you set our re time to a value of 2

we're gonna double the speed

so we have that and now we're just gonna write this out

so I'm gonna attach a right note

sorry that's an old one bringing a new right note

and so we're gonna write this out now

and then I will pause this

go ahead write that out and bring it in

so that you don't have to uh

wait drain the render 1 sec

alright we're back I've rendered off the uh

particle system and uh

this is what we have at double speed

so as you can see it's a lot faster now

and it plays a lot faster within the script as well

we don't have to be viewing this out of the 3D system

so our particles start at 1

they go and they end around from 30

so we have about 30 frames of particles

which is more than enough

so now that we have that

what we're gonna do is

we're going to put this over our 2D plate

I also have attached a time offset

to have it start around where our beam starts as well

so if you look over

if you go forward in the frame range

you can see that

this starts right after the beam starts

so we're now just gonna position this correctly

so let's throw a transform to the particle sim

scale it down a little bit

rotate it a little bit and just move it over here

and we'll also instead of doing an over

we'll plus it on top of our particle sim

so for that node we can also have that animate on here

find our first frame

alright so now we view our shot

I'm just gonna throw on our frame range there

this is roughly what we have

so we're gonna leave this for now

for this class and next class

we will go ahead and finesse this and final the shot

and get it working the way we want it to work

thank you so much

I'll see you next time