All language subtitles for 03. Creating Mattes

hi everyone

welcome back to our 2nd class

in our course of creating high tech weaponry in Nuke X

in this class

we're gonna continue prepping our plate

by creating roto shape mats for the gun

and for the guy holding the gun

both for hold out mass for interactive lighting on him

as well on on the gun

as well as muzzle flash layers

for the nozzle and tip of the gun

so let's begin

so first thing we're gonna wanna do

is creates a rotor shape mat of the gun

so I'll go ahead and do that real quick

now it doesn't need to be 100% accurate

but the closer the better

it's a pretty detailed gun

so we'll just kind of keep it rough

and can kind of refine it later over time

alright we're just keeping it pretty rough

which should work for our purposes here

and um

that should be okay for that

alright

next thing we're gonna wanna do

is we're gonna wanna track the guns

that we can have a

so we don't have to animate

keyframes throughout the whole thing

if we just create a two point track

attached to the rotor shape

that should give us our mat a lot easier

so I've gone ahead and created a

two point track earlier

um I track this point here on the gun

as well as this point

and attached it to our rotor shape here

and this is what we got

I like to check my rotor shapes

to see if they're working

by using a key

mix in a constant placed over

just to see if it's all holding up

so if we kind of scrub through

see that the mat is holding up pretty good

we won't need the mat past frame 88 or so

once he lowers his gun

so we kind of have the mat

for the duration that we need

so that's good

so we have mat 1 here

which is the rotor shape

plus our gun tracks

will disconnect those and bring those down

back to our script here

so currently in this script

we have the nodes holding out the ejection shells

at the top here

so we're gonna just name our mat here

put it in a bounding box

and we'll call it gun mat

the next mat we're gonna wanna create

is a mat for the actual guy himself um

this is gonna be used for interactive lighting in his

uh his his um

highlight areas

so I can just blow this away here

and to do that

what we're gonna wanna do is

we're gonna wanna pull the key on him

and use a rotor shape to hold that key in

so first thing we'll do is we will pull the key

using a key or node

we'll just key that off the plate

go to our kind of our reference frame is 38 39

as you can see

somehow he's in its daylight

and he doesn't have a lot of highlight areas on him

to key so we're kind of just getting a lot of his

his suit which

which is fine

I'd say maybe something like this

something like this is probably good enough for now

we can refine that later

so right now we'll also use a Roto paint node

and draw a mat around him

so gonna go this way here

get some of his helmet as well

again it can be rough

we will refine it later if we need to

no point doing roto

that won't be needed

so um again

this is where you kind of need to

look at the physics of the shot

um we're gonna be doing a lot of our um

muzzle flash lighting effects in this area

so any interactive lighting probably won't be seen

towards his backpack

so we really want to focus more on his friends

and fade it off towards the back

so our mat can just end around here

and we'll grab a bit of his arm here as well

alright you get the gist

I will refine this a bit more later

so if we go to our key

here we can see that's what we got

so we wanna put the key into the mat so

we can do something like this or we do

kind of our mat inside our key inside of our mat here

and this is what we get so we have this there

so you guys don't need to roto

see me roto for the direction the frame

I'll do that while the uh

the class is over

and then the next class we will continue on um

creating our lighting effects

muzzle flashes at the beginning of the gun

so thanks for joining us in this lesson

and I will see you in our next lesson thanks