Okay, so let's look at creating some more basic shapes now.
We've got these still on the screen.
You might have something on the screen from a previous chapter.
You might not.
It's a good time to show you how to delete an object.
So we're going to use our Windows Select.
We're going to go down from the right.
And remember, all we have to do is touch these because we're going right to left.
So that's selected all of them.
And then we just press delete the delete key on the keyboard.
Gone.
Okay, so let's look at these shapes in more detail.
Now, we've already looked at Rectangle.
We're going to do it again.
I want you to look at the button and you'll see it's got two blue circles on.
Now that's kind of a hint of how it's going to what it's going to ask you for, basically.
So with that rectangle wants to corners, you can see the blue dot are in two corners and if you just
hover over the key over the button for a while, it will come up with an explanation.
All these commands, you can hover over it, you get a basic explanation, and then a more detailed
one.
Okay, so this rectangle here, if I left click it as it kind of shows with blue dots, it's looking
for first one corner, then another.
And it can be it can be left to right, it can be top to bottom Anywhere you want to draw it.
It's going to ask for two corners, opposing corners.
Okay.
So I'm going to I'm going to select that.
I'm going to delete and we're going to look at it again.
I'm going to left click this rectangle.
Most of the time when you're creating a model file or a drawing, you do actually want to draw to a
specific.
And measurement.
So in this case, in this course, we're going to be using millimeters.
But it's exactly the same.
If you set up in inches, you usually want to draw something.
If it's a building you want, you've measured the walls, the rooms of a building.
You want to draw a specific size.
It might be a mechanical component.
You know the sizes.
Okay.
Most of the time you will want to draw to scale.
Okay, so we're going to go to the rectangle tool again, and I want you to notice next to your crosshairs,
we have this.
There's a piece of text which says specify first corner point or and if you can't see this, it's F12
on the keyboard, remember?
And then we have a box where we have two boxes with a figure in each box and one of them is highlighted
in blue.
Okay.
So when you get a piece of text, it's giving you a clue as to what it's looking for, basically.
So we've clicked on the draw rectangle and now it's looking for the first point, the first corner point
of the rectangle.
So where's your rectangle going to begin from?
In this case, we're just going to click down here, okay.
And now it's saying specify other corner points.
So as we've seen, it's looking for the opposite corner.
But these boxes with the numbers in these allow you to input an actual dimension.
So let's say we wanted to create a rectangle that's 1000mm, which is a meter by 500mm.
Okay.
So if we wanted it a thousand this way, you'll see that the box for that dimension is the one that's
highlighted if our other box had been highlighted.
We would have to swap between the two and we swap between these two boxes by pressing the tab key,
which is usually on the left of the keyboard above caps lock, and it's two opposing arrows.
By pressing the tab key, we can change between these two boxes.
Okay, so to draw a box, which is a 1000 by 500.
We would go left, click for the start point, make sure this box is highlighted and type in 1000.
Now it's important here not to press enter.
If you press enter, you're going to end the command.
So just press that tab key and switch to the other box and you'll see this one now is locked at 1000
and there's a little padlock next to it.
So now we'll put in here 500.
And now we can.
Press enter and we have our box, which is a thousand by 500.
Okay, so that's how you would draw a basic rectangle to set dimensions.
Now, this draw box here, there's all sorts of other objects.
So maybe we wanted to draw a circle.
We'll click on the circle and we can see from a blue dot, it's giving us a clue.
It's going to ask us for a center point and then the radius.
So we'll just click anywhere.
And similar to the rectangle, we've got a box highlighted with only one dimension to go into radius.
So we've only got one box.
I'm going to make this 500 radius, I'm going to press enter and that's a 500 radius circle.
Okay.
Now, you see under some of these, we've got pull downs.
So under circle.
You can change how you draw that circle.
Maybe you've got a diameter and not a radius.
Or you can choose center circle with a center diameter.
So as before, we just left click.
And then this time it's going to ask for a diameter.
So 500 diameter, and you'll see it's half the size because its diameter.
We've got it under Rectangle.
We've got Polygon.
This will ask us first for a number of sides.
Let's have six sides enter.
Then we a bit like drawing a circle.
We click the center of the circle.
Now it will say inscribed or circumscribed.
That just means Do you want the corners to be to the outside or the flats?
The easiest way is to just show you.
So let's say inscribed in circle.
Okay.
Now, we weren't going to specify a position.
Of one of these.
Joints like the corners, if you will.
Okay.
And click there if we'd have selected the other option.
And gone circumscribed about circle.
You'll see it's asking for the flat point, not the corner.
So to be honest, we don't use them much.
You use Rectangle a lot.
We use circles a lot and we use lines all the time.
So you might notice here with line, there's two different types of line and there's polyline.
So we'll look at the difference between those.
So line if we left click that you can see it's going to ask you for two points, a start point and an
end point.
Okay.
And then it's going to keep going.
And you can keep drawing lines as much as you want until you right click to end the command.
If we then use the just left, click that line there, you'll see it's only highlighted the first part.
Okay.
And that's because all these are different lines, even though we drew them one after the other as part
of one command, they are separate lines.
Okay.
Now I'm going to shift I'm going to draw a window to select them all and press delete.
And I'm going to look at polyline.
I'm going to left click that and I'm going to do the same thing.
Start not worrying about units.
I'm just drawing a line again, right click to end.
And now when I select it, you'll see the whole thing is selected.
And that is the main difference between line and polyline.
A line will end up being lots of different lines.
A polyline is one continuous line and there's reasons why you would use one after the other.
To be honest, most of the time I prefer to use a polyline.
A polyline.
You can give things like width.
You can do all sorts of various things with it, which we'll go into later and it's just easier to work
with.
It's got more intelligence, if you like, you can you can do more with it.
Whereas a line is just single lines and if you wanted to select the whole thing.
So for this, for instance, if this was a fence line, I could click it, The whole thing would be
selected.
I could get a length, I could change how it looks in one go.
Whereas if it was various different lines, I would have to select them all individually.
But again, it's just an overview in this lesson of how to create them, and that is the main difference
to remember going forward.
One is separate lines.
The other is a continuous line.
Okay.
And then we have things like Ellipse, which is going to ask you for three points.
So the center and then it's going to be like drawing a circle, but it's also going to let you make
it into an ellipse.
Okay.
That again, not used very often.
When you do need it, you need it, but it's quite a rare thing.
So we'll get rid of that.
The main ones are circles, rectangles, lines and polylines, and we're going to look at them in more
detail in the next chapter.