Original subtitles

Hello people, welcome to this class in

where we're going to talk about the main concepts

that we have to muster in order to

understand well how SketchUp things.

And then we will become experts and we will be

able to do any operation, any transformation.

We will be able to fix any problem.

And we will enjoy much more drawing in.

So mainly we have to take in mind that there are

two things super-important in

a skin cell, lines and surfaces.

Here we have a 2D drawing on a 3D model.

Both of them are based on lines and surfaces.

So let's start with a more simple one,

which is of course this rectangle in 2D.

I have this woman here for giving you the scale,

but we can perfectly delete it,

because actually a scale right now is not important.

So as I told you, here,

we have lines and surfaces.

Actually we have just one surface.

We know how to select them.

We want to select the line.

We can do it using our mouse and

clicking and adding more and more lines, e.g.

that if we click out of the drawing,

then we unselect everything.

If we want to select the surface, here we are.

But the thing that we have to understand is that when

we are drawing a sketch up our scope,

our purpose is to generate

surfaces in order to create 3D models from

the surfaces is how we are going

to use the Post poll tool to

extrude those surfaces and being

able to achieve 3D models, e.g.

here, once we have the surface,

I can use the cost pool tool,

one-click and then we have our queue.

So imagine that we delayed

the surface and we have just lines. In this case.

In SketchUp, we can barely do nothing.

So we should recover the surface that we have just lost.

In order to do that,

we better go to line and then we can draw

or redraw over any of the lines of this rectangle.

Then we recover that surface

and we can generate again that 3D model.

So the lines are containing that surface.

If this time I erased one of the lines

instead of the surface, e.g. this one.

What is going on?

I have lost, of course,

the line, but at the same time,

I lost the surface because

the line are the concerns of the surface.

If I lose any of them,

then I will lose the surface to tell

again for selecting the line tool.

And I close again and I recover the surface again.

Let's see how this works.

When I am working with a 3D model.

In a 3D model, it is exactly the same like in a 2D model,

but with high, I mean,

if I select this surface and I delete it,

you will see that the queue is completely empty.

Inside the queue, we have just error.

It is not a solid figure.

So we can think about this Q as

different 2D planes pouring all together, right?

And of course, all of those 2D planes will work

exactly the same as our first 2D drawing.

We saw dust before.

So here, if we wanted to recover that surface,

we should draw any line of its concern, right?

E.g. this one.

And once we have the surface,

we can mark it and extrude

it and play with it as we want.

Furthermore, if I choose this time, e.g.

this line and I delighted what is going on.

We have lost, of course, the line selected,

but at the same time,

we lost two surfaces.

The surface on the left side,

on the surface on the right side, right?

Why?

Because that line was holding

those two surfaces the same as here in the 2D drawing.

When I select this line and I delete it,

we said that this line was

holding the surface in the 3D model.

That line was holding knot one surface,

but two of them according to this logic,

if I select the line and I draw

again from this point to this end point,

I will recover both surfaces.

Here we are.

This is one of the most interesting and fun things about

SketchUp because if we are able to

understand these concepts in a very deep way,

we will be able to enjoy a lot and draw it in SketchUp

because it's not just about

the lighting and recovering surfaces.

But e.g. if I select

this line and instead of deleting it,

I move it using the Move tool.

Look what is going on.

That line is holding

either the surface on

the top and the surface on the front.

So if I move e.g.

that line following the set X,

both surfaces are changing this way.

And if I go till the ground floor,

I could become easily my shape into

a triangle 3D model, right?

We will go deeper into this, Let's say,

reshape and resize figures when we see these Move tool.

But at this very moment,

I just want you to understand how lines,

surfaces are connected to each other.

How lines are the concern of the surfaces here?

How surfaces are the key for creating 3D models.

And how those 3D models are totally empty inside.

So we can understand them as different to d,

draw wins joint altogether creating that shape.

So let's finish the class here.

In the next class we will talk about

another very important concept in SketchUp,

as it is the groups and components.