So last lecture, we made this really strange looking object here with using all of the different tools,
the modeling tools.
In this lecture, we are going to learn how to add and delete geometry.
In the modeling section, the key and the key word there is geometry.
You don't delete or add objects, you delete and add geometry.
So to add you can just use the shift menu just as usual with.
But this time it only comes up with meshes.
Let's add in a cone for example, and it adds in a cone object just as it would in the layout section.
The difference is.
However, if you look in the hierarchy up here, there's no cone visible, there's only a cube.
Now, this cone here is not its own object, but is part of a geometry of our object here.
So if we go out of this and go over to layout section, notice that these are one thing here.
If I grab them, they all treated as one object, even though we added a cone in which is completely
separate.
So.
So it's important to remember when you when you are adding geometry, if you wanted to add a whole new
object, add it in the layout section.
If you're wanting to add just geometry, add it in the modeling section.
Okay onto deleting.
Now deleting again is a bit more complicated because you're not just deleting an object, you're deleting
deleting geometry.
So let's use the menu.
So select anything.
Let's just select this face here and press X to delete.
And it comes up with all these menus here.
So delete vertices edges faces only edges and faces only faces dissolving as well.
So a lot more advanced than just pressing delete.
Are you sure we want to do it for the layout section.
So this is basically deciding whether you want to delete vertices edges or faces okay.
If you deleted a face it deletes it just like that.
There.
Okay.
Um, now the dissolve I think will show better if I create a new one here.
So let's select everything by pressing um.
Oh, you don't know about just yet.
Sorry.
That's a shortcut I'm going to teach you in a few lectures time.
I'm going to delete all vertices, which means everything is deleted and add in a cube.
I'm going to make a loop cut down the middle of this cube just here.
Now let's say I no longer want this loop cut.
Okay.
Um.
And you might think, okay, just delete the edge.
Well, what happens if I delete that edge?
Is this now the reason why it opens up like this is because these two faces here won't will not exist
without this edge.
So if I delete this edge, anything connected to that is also been deleted because a face can't exist.
So like an edge can't exist if one of one of its vertices get deleted.
But is it even more obvious if I delete a vertice like this?
Here, for example, in this entire region gets destroyed because of just that one little point deleted
because these three edges cannot exist, so these three edges cannot exist.
You can prevent this, however, by dissolving instead of deleting.
So dissolving kind of deletes it, but kind of patches it back up afterwards almost.
So it works really well for loop cut.
Because if I was to say dissolve this here.
So dissolve edge, it just looks like it wasn't there already.
Okay.
This is computer generated however.
So if you try to dissolve some things it won't work the best.
So if I try to dissolve this vertice here, this happens.
It creates this face here.
So it's not always the best.
Um, but it can work.
Um, for more simple ones basically.
Um, but definitely one to keep an eye on there.
Um, so do I delete more than dissolve?
No, I use to dissolve more really, than I delete, because deleting you destroy anything connected
to that object as well.
Um, so make sure you know the difference between those two, because, um, you don't want to be deleting
massive sections just by deleting a vertice, for example.
So now that you know how to delete and add objects or add geometry into modeling, we're going to take
a look in the next lecture at some selection modes.
So because obviously you'll be selecting a lot more objects at once.
So selection modes as well as what proportional editing is.
So during the next lecture we can have a look at those two things.