hi there ready Krrish MIT back with
another r18 what's new video so what's
new in this one well here I've got our
new little g-man model I want something
little more complex we'll talk about
this because in this video we're gonna
be talking about the knife tool let's
dive right in so I'm gonna grab the body
of the gorilla and let's go to polygon
mode and let's start looking at knives
well normally to get to the knife tool
you'd hit K but now we need K it pops
open a little menu there are three
different knife tools now if you were to
hit K again then you'll get the kind of
the one that's most regular than when
you'd be used to so if you get K twice
then we're gonna pop open the regular
line tool so by default things can
behave somewhat like the way you
remember but visually it's pretty
different if I click and drag you see I
make a nice knife to a nice cut here but
we have all these little interactive
dots here we actually see the point we
started the point we ended and all of
the edges and points that are being
created through that process in addition
to that I still drawing here so I can
actually click again and then again and
then again and so I'm making a whole
series of cuts here and they don't
become real until I hit escape and now
if you escape you see I've gone and made
all those cuts so we can do that which
is pretty neat in addition you can get
really specific where I can click and
it's automatically snapping to edges and
it snaps even better to points and so
you can see we can get really specific
get a bunch of really nice cuts going
here and hit escape and then those all
become real in addition to that we can
get pretty fancy I can actually start
clicking here on the internals of this
polygon hit escape and now you can see
we've actually made like n-gons we've
actually drawn end guns directly in here
now the subdivision surface is giving us
some some funkiness there because we did
create some weird end guns it doesn't
exactly know how to deal them but you
can make those kind of cuts so in some
sort of more geometric type surface if
we're to turn off say our sub there's a
surface you see that goes away
and then we could even fix that by doing
a couple quick cuts there and now that
should handle that a little bit better
but you can see we just made this really
interesting cut here and they'll be
really hard to make that shape in any
other way so let's see what else is next
okay we can make a we can make changes
as we go so I can make a cut there and
then snap to here and it snapped
here and snap to there and I go over
here but I guess be like oh you know
what I don't actually want that point so
I can hold down the command or control
button and then click on it one time
Italy race at the point in addition I
can hold down control or command and
click on any of these mid points and
drag out a new point in addition to what
we already had so I can make another cut
right there I can drag this one down I
missed so at the end we can continue
drawing from where we were we could say
Oh get rid of that first one and then
once we have scape boom they have now
become real so there are there's a lot
of really neat straightforward
possibilities just with the basic
cutting possibilities here so we've got
the snapping with all sorts of
constraints what not going to go not
going to get too in-depth of these
because we got a couple more tools to go
over here but there is definitely a
thing or two more I want you in this
tool I'm going to revert back to where I
started here so we lose those cuts and
let's go back to g-man let's hit Kay Kay
and now we've got that tool back up
again alright now we run visible only
which means we're only cutting the ones
that we can see you can also restrict a
selection which would just be the ones
we currently have selected but if I turn
that off I can actually do a cut right
there and it will hit escape and it'll
actually you'll see it'll actually go
right through his arm so that works
really well but what this means or well
in addition to that that unlocks the
ability to turn on slice mode what that
means is I can actually turn on
different settings
one of which B is remove part a let's do
that let's click remove part a what that
means is I click to cut it's actually
going to erase out and these are all
separate model pieces in fact why don't
we why don't we make this explicit by
just grabbing this arm I'm going to
select that and then I'm going to delete
everything else okay cool so now we just
have this arm so Kay Kay or in the knife
tool remove part a so if I were to say
to a cut like that you see I have now
removed all everything that was on that
side of the cut I can probably even do a
couple additional cuts so we can really
isolate a small piece of geometry here
and just be tinkering around with that
you can also just do a series of cuts to
do that so I could say slice off like
the opposite of I want to do I could do
that hit escape and then do that and
then do that and the kind of very
meticulously carve out just the piece
that we want to be dealing with so it's
a really clean quick way
way of just isolating certain parts and
you see it actually deleted the points
out as well so that's pretty nice these
were not being used so that's all
working great I'm going to revert again
and let's deal with the last thing well
actually two more things just on that
tool KK get that up twice turn off
visible I'm gonna go to split this time
so what's the split do well if I make a
cut I hit escape it doesn't look like
much happened but what he actually did
is it disconnected everything on that
side from everything on the side even
though there one polygon object they're
not physically connected anymore
so what this leads to is we can actually
do a I'm going to just do a quick series
of cuts actually let's do these so just
some random random slices here hit
escape so we got all those cuts
happening but what will happen is I can
actually grab any little part of him
grab all selected which the shortcut is
u-w and you see I just grabbed that
little section I can click right there
and say eww and I grab that little
section just where the cuts allowed it
these are like remaining pieces this
really opens up a lot of possibilities
for I think like some mograph
opportunities where you have all these
individual parts I didn't have the
checkbox for checking those points but
we can now grab any of these chunks and
we can move these parts around and do a
lot of different things so I've actually
got this fracture object already here so
now I've got that fracture the fracture
is already set to explode segments and
I'm using the pushup artifact err just
so it pushes all the parts away from
each other watch
Chad's video on that one I'm gonna drop
in the body into that and you'll see
instantly that all those different parts
are created are exploding away from each
other so just the ability to like chop
all the stuff in the different pieces
really kind of opens up some some
possibilities in your head of like weird
things you might be able to do I like
just thinking of text possibilities and
like I don't even know like there's so
many different things that might be done
here now having said that I want to show
you one more along these lines I think
is really neat revert to saved one more
time here one more time for this
particular tool and we'll be doing it
more in the others I really like this
feature if we go and we click on let's
grab a star I'm going to grab the star
and I'm gonna move it forward let's pull
it in front of them and it's 84 scale
and scale it down let's even go
relatively small like that I'm going to
move it really close to his torso
actually why don't we move it over
his arm and maybe even shrink down a
little more angering and I'm also going
to make this editable okay cool not
gonna grab our g-man the body go to
polygons hit KK for knife and I see we
get that spline the spline is just
hanging out there doing nothing but if
we hold down the command button when I
mouse over the spline you'll see that it
suddenly gets highlighted in red so when
I click while holding command or ctrl
and then well now I've done that if I
rotate my camera you can now see that we
have cut into his geometry with this
spline shape so like there's so many
different possibilities with this now
they if the edges that don't complete it
didn't go through and there might be a
checkbox that fixes that but this means
that we can now make cuts based on
spline so let's do a immediately right
away why don't we do something fancier
so with that in mind why don't we do
something a little more complex I'm
gonna grab a circle spline and let's
grab a mograph cloner and drop this into
the cloner it's linear I want a couple
of these nothing on why I want to go to
end point and the end point should be 1%
1% 1% and I can see we a series of
circles so I want a couple more of those
very nice and now I want to kind of bake
that down the quickest way for me is
going to be creating a connect and I
hold down alt option boom it makes it
apparent see makes it editable flies
that all out cool I'm gonna move the
spiral to about his belly button and
then let's zoom into a good angle here
hit T for scaling I scale it down a bit
capture as much of him with as many
circles as possible and now let's go
ahead and grab the body go to polygon
mode select everything KK for the knife
tool and now I want to make sure that
I'm not just was blown lis I want to cut
all the way through the body and I want
every section to be split into a
different part I hold down the command
button click and now we just wait now
we're doing a lot of cuts through a lot
of polygons but eventually you see boom
it did finish and I can rotate around
you see we have some new cups on him but
as a general rule and I delete that
you're going to see he looks pretty
smooth he looks pretty much like he used
to and if we were to throw that probably
even into like a connect object it
should reweld those parts back together
and we should kind of the seams should
largely go away so yeah he's been reweld
it back in the one part I actually don't
want weld him in the one part I want to
drop them back in this
sure so as soon as I drop in the
fracture right away you'd see we've got
all these nice little rings and radiuses
cutting straight through the body and
all that was pretty much it that's one
cut with with a circle and that's using
a push up heart effector but we can do
all sorts of weird additional things
with mograph we jump into that I can
grab maybe a step effector wherever it
is step step step step
oh and now we see we get a fat monkey
which actually isn't what I want it
looks great I'm gonna grab position and
let's start adding some Z and look at
that now we can and now the circular
cuts are all being pulled and pushed
around I can be going up and down so
like I don't even know what you would
end up doing with this kind of stuff but
there's so many crazy weird
possibilities like you know it's like
boom we've got this weird like abstract
e dance thing and like it was so simple
we just threw in a few cuts it's amazing
so that's great we got a couple other
tools to talk about with him though
let's quickly go through some of the
other ways of cutting so let's L revert
again revert to saved
let's grab G man and I'm gonna hit K and
now let's go to J so KJ so this is the
plane cut feature so if I were to click
and drag you see we're actually getting
kind of this infinite line if I click ah
then boom we've kind of got cut and it's
going right through them but if I were
to rotate my camera you see what's going
to activate this nice little rotational
gizmo and I can grab that I can now
rotating you can see that we're
interactively deciding oops I missed I
miss I miss clicked so I lost it you can
see we're interactively moving and
choosing exactly where this cut is going
to go now in addition to that I let's
say we want to start it up here there's
a feature for the number of cuts we want
to add so I can start adding additional
cups into him and all those become a
different slice traveling we can change
the spacing we change the number we can
restrict it the selection all that other
than other normal stuff but right now
it's set to cut all and plane mode but
we can actually set that to and so I've
cut all is split and now you know I'm
going to escape
in fact the tool I think is
automatically applying it so now he's
cut in that exact same way which means
if we throw that back into our fracture
boom all those slices would have cut him
apart and now he's got is an individual
bits flying around again so plane cut
really straight I feel like it's the
most straightforward one
some really nice options with it so
looking great there revert to saved now
this next one I think is is well the
knife tool is very practical but this
next one kl4 loop or path cut this one
is very practical for like actually
doing some real modeling so like at a
glance you can see that I can just start
adding in some cuts here I can just add
a cut I can add a cut like we can just
add in cuts wherever we need them and I
can even go and put them around these
different loops like I can put a loop
here if I move it up to his a little
gorilla hair is main up here you can see
that we're actually getting these nice
complex circles travelling around I can
actually click and drag so you can kind
of interactively place this wherever you
want and you also see we get this nice
little HUD element this gizmo on top
that we can let me make it clearer one I
click over here that you can kind of you
can grab it and start moving this around
up on the top so you can place that
exactly where you want to that way as
well but we have additional options if I
hold down command I can start clicking
and adding additional cuts along this
line very interactively you can also add
them in via this plus here and we have
right here I don't recall it but it's
going to like align all of them evenly
so if I click that all those get lined
up you see we have perfect number of
even cuts traveling along it working
working perfectly and now we're actually
doing so now I can go and do some more
cuts but we can increase the number of
cuts I can say you know what every time
I do a cut I want there to be or not
every time but I can click on here and I
can add additional ones I think maybe if
I have the tool selected or if I
deselect back to polygon mode sorry I
guess we have to make the cut and we can
add in the additional ones as we go so
super interesting there now there are a
lot of options I'm going to go through
all of them but something I really like
is we can use loop range if I click on
that then you'll see that where it's
making that loop cut but stopping after
one so it goes one left and one right
you can actually stop that via
bi-directional cut but we actually set
this up a couple so I can say let's say
like three so now it's going in each
direction three times but we can
actually do additional cuts so you can
see we're going three one way three the
other and we're doing those cuts now let
me show you what I think is one of the
most neat things in this
that is our preserve curvature so I'll
turn off the loop selection because we
don't need that uh what I do want to do
is is that the one that remembers Oh
neat okay I didn't realize but you saw
how every time I was clicking I was
losing all my settings we can actually
fix that by turning on reuse cuts
because if it's often so he's going back
to default but if I keep that on then
it's going to remember like oh I want
four cuts so that was the part as
missing is like I know I know that's
there somewhere so anyway I won't go
back to talking about preserve curvature
so what I want to do is not reuse our
cut sees you can see just see on the
Sarma harder to click we just make that
nice straightforward cut exactly what we
expect but if we turn on preserve
curvature then look at that there is
curve there's a curve in there it's
maintaining this curve as it travels
around the arm so let's click on maybe
right here click on that and boom it's
not showing as well as this one just for
where it is and click right there you
see the curvature now we have this
tension tension slider so I can actually
drag this in or out and we can make that
curvature a little more extreme or a
little more flat whatever we think looks
good to maintain that but there'll be a
lot of work to grab that loop and scale
it properly and make sure it's all
working exactly the way the way we want
it but now we can just click and
maintain that curvature which just
modeling wise if you're actually doing
some character modeling that is an
incredibly powerful feature to be able
to maintain maintain these lines so just
going through and being like ok we need
more detail here and need more detail
here there's so many there's so many
additional neat little features there
are there's so many more check boxes and
there's shortcuts and additional things
to do but I just want to give you that
little overview of all of the knife
tools that cinema now has a really
really great addition to our modeling
tool set so I'll see you guys another
video bye-bye