Modes for constructing a polyline in AutoCAD. AutoCAD training Additional polyline data in AutoCAD

A polyline in AutoCAD is built in the same way as regular segments (we also offer our course). However, the parameters that can be set when constructing a polyline are unique. The command responsible for how to draw a polyline in AutoCAD is located on the “Home” tab, in the “Drawing” panel. You can also use the command alias and enter “PL” in the command line, which means polyline in AutoCAD.

A polyline in AutoCAD consists of linear and/or arc segments, as well as any combinations thereof. You can access this or that parameter through the command line.

The most common polyline parameters include:

1) Arc – allows you to create arc segments. When you select this parameter, additional subparameters appear, such as radius, direction, etc., allowing you to control arc segments.

2) Linear (set by default) – allows you to create linear segments.

3) Width (not to be confused with line thickness) – for each individual segment you can set the starting and ending width values. Using this parameter, an arrow was created in the example in Fig.

A polyline has a lot of parameters. You can read more about each of them in Autodesk Help (F1).

Where can you use a polyline?

As a rule, this tool is very convenient to use in 3D modeling. After all, in order to give a volume to a flat object, it must be closed and solid. For example, you can use a polyline to create an outline of interior and exterior walls and then extend it.

This command can also be used as a trajectory for an array or shift.

It is very convenient to crop a drawing in AutoCAD, tracing the desired contour with a polyline.

A polyline is a connected sequence of segments; all these segments are a single object. Polylines can consist of linear and arc segments, as well as any combination of them.

In the tab "Home" - "Drawing" - "Polyline". Or type the command on the command line PLINY,Enter.

Let us designate the starting point with the cursor or specify its coordinates. The polyline is constructed as a result of sequential designation of different points on the plane. Let's build a polygon.

Now we need to close the polygon. Right-click to open the context menu and select the command "Close".

Let's look at the context menu options. To do this, click "Polyline", indicate the starting point and call the context menu.

"Arc" will be the first option in the list, it will switch us to the mode of constructing arc segments of a polyline.

Click "Close" to complete the arc. Let's look at the option "Width".

Using this command, you can set the line thickness for each subsequent segment. Let's build an arrow. Click "Polyline", designate the starting point and call the context menu, select "Width". For the first segment, let's take the initial thickness equal to zero, final 10 mm. After entering each value, do not forget to press Enter. By simply stretching we set the length of the arrow.

Let's call the team again "Width" and set the values ​​of the initial and final thickness 3 mm, stretch to the desired length. Press the key ESC to complete the build.

Option "Length" You can precisely specify the length of the next polyline segment.

A polyline is a complex primitive consisting of one or more interconnected straight and arc segments. All these segments represent a single object.

To build a polyline on the tab "Home" in the panel "Drawing" select a team "Polyline". If you prefer to use the command line, then you need to type the command in it PLINY(for English versions of the program _pline) and press Enter.

First of all, we set the starting point using the cursor, or indicate its coordinates. If we now sequentially indicate different points on the plane, we will get a polyline that consists of straight segments. For example, let's build an arbitrary polygon.

To close our polygon, right-click to open the context menu and select the command "Close"(in English versions close). You can close a contour by simply indicating the end point with the cursor, but you will agree that it is more convenient to do this automatically.

If you now click on any side of the constructed shape, it will be selected for editing as a single object.

Now let's look at the options that you probably already noticed when you call up the context menu by right-clicking the mouse. Press the button again "Polyline", indicate the starting point and call the context menu.

The first option on the list is "Arc".

This command switches us to the mode of constructing arc segments of a polyline. Let's create a new shape using the button "Arc".

We complete the construction by pressing a button "Close".

Let's look at another option from the context menu "Width".

This command allows you to set the line thickness for each subsequent segment. When building, the system offers to set the initial and final thickness, which allows you to create tapering and expanding segments. When a constant thickness is needed, the same start and end values ​​are specified. For example, let's build an arrow. Press the button "Polyline", indicate the starting point and call the context menu, select the command "Width". Set the initial thickness to the first segment equal to zero, final 10 mm(after entering each value, press the key Enter). By simply stretching we set the length of the arrow.

Call the command again "Width" and enter the values ​​of the initial and final thickness 3 mm, stretch to the desired length. We complete the construction by pressing the key ESC.

The Half Width option is similar to the "Width", with the only difference that it specifies half the sizes of the initial and final thickness of the polyline.

Using the option "Length" You can precisely specify the length of the next polyline segment.

It should be borne in mind that the line will be built in the same direction as the previous one. We will not give an example, since the constructions are simple, experiment on your own.

In the next lesson we will look at some features of constructing arc segments of a polyline.

If you have questions you can ask them

In AutoCAD, a polyline is a complex primitive. By and large, this is a collection of segments that represent a single solid object. This allows you to set non-standard parameters that are unique to polyline. So let's look at this in more detail.

AutoCAD polyline. Command Options

A polyline in AutoCAD is constructed in the same way as ordinary segments. However, the parameters that can be set when constructing a polyline are unique. The command is located on the Home tab, in the Drawing panel. You can also use a command alias and enter “PL” in the command line.

A polyline consists of linear and/or arc segments, as well as any combinations thereof. You can access this or that parameter through the command line (see figure).

The most common polyline parameters include:

1) Arc – allows you to create arc segments. When you select this parameter, additional subparameters appear, such as radius, direction, etc., allowing you to control arc segments.

2) Linear (set by default) – allows you to create linear segments.

3) Width (not to be confused with line thickness) – for each individual segment you can set the starting and ending width values. Using this parameter, an arrow was created in the example in Fig.

A polyline has a lot of parameters. You can read more about each of them in Autodesk Help (F1).

Where can you use a polyline?

As a rule, this tool is very convenient to use in 3D modeling. After all, in order to give a volume to a flat object, it must be closed and solid. For example, you can use a polyline to create an outline of interior and exterior walls and then extend it.

This command can also be used as a trajectory for an array or shift.

It is very convenient to crop a drawing in AutoCAD, tracing the desired contour with a polyline.

These are just some examples where this tool can be used.

Thus, polyline in AutoCAD is a very useful tool, which has unique properties and parameters. See for yourself!

Spline command, Polyline command

SPLINE command

http://www.autocad-profi.ru/spline.php

Input: Classic AutoCAD: from the Drawing command bar - from the Drawing drop-down menu. In versions with an on-screen menu - from the DRAW 1 submenu. Ribbon option: from the Draw command bar. Purpose: builds smooth pattern curves passing through given points.

Peculiarities: the constructed curve can either pass exactly through the specified points, or deviate from them by a set amount, for which the Tolerance option is entered and a request for the deviation value is followed. The constructed spline can be combined with another spline using the CONNECT editing command (see 8.15) provided that the end points coincide. You can attach one spline to one point. The number of sequentially connected splines is not limited. If splines have two common points, then they form a closed loop. Terminating a command– right-click, after which the command requests the direction of the tangents at the start and end points of the curve.

Subcommands:

1. For a closed curve (Close option), the direction of the common tangent is requested. Close(Close) - the last point of the spline will be connected to its first point. In this case, you will be required to indicate the direction of the tangent At the starting point of the spline - Specify tangent: (Indicate direction:). This can be done using the mouse. If you simply press “Enter*” again, then in this case the direction of the tangent will be accepted as it is set by default.

2. Fit Tolerance- allows you to specify the permissible deviation of the spline from specified points. The default tolerance is zero. Increasing the tolerance is used to create smoother splines. After specifying the tolerance, you will return to the mode for further construction of the spline.

Usage: In engineering graphics, the SPLINE command can be used to draw break lines. Using splines you can draw beautiful shapes with smooth transitions. The use of splines in design work is especially useful.

POLYLINE command

https://drawing-portal.com/glava-sozdanie-ob-ektov-v-autocade/poliliniya-v-autocad.html

Input:

Classic AutoCAD: from the Drawing command bar - , from the falling

Drawing menu. In versions with an on-screen menu - from the DRAW 1 submenu.

Option with ribbon: Home => Drawing.

Purpose: the command draws a complete primitive in the form of a broken line, arc or circle, a combination of straight segments and arcs.

Peculiarities: The command is similar to the Segment command in that it also draws a straight segment or a broken line. Polyline lines created by the Pline command consist of straight segments that are perceived by the AutoCAD system as a single object. Polylines created by the Line command consist of straight segments (segments), each of which is a separate object.

Usage: Polyline is widely used in two-dimensional design and 3D modeling in AutoCAD, because The range of functions (parameters) of this tool is large.

In 2D design AutoCAD's most important feature of polylines is that we can extract data from objects created from polylines and display them using fields.

In 3D modeling AutoCAD's most important feature of polylines is that we can convert flat objects from polylines into 3D objects using special commands.

Also, a polyline is used to draw arrows, as well as to obtain closed contours.

The team has a developed system of options and requests. This is one of the most “talkative” teams.

Modes for constructing a polyline in AutoCAD

In AutoCAD there are two modes for constructing a polyline:

linear- allows you to create straight polyline segments. In this mode, working with a polyline becomes similar to working with the Line tool;

arc- allows you to create arc-shaped polyline segments. In this mode, working with a polyline becomes similar to working with the Arc tool.

When enabled, the command requests the first point. After specifying it on the command line, a message appears about the current state of the line thickness and a number of requests about the further operation of the command:

The current width of the polyline is 0.0000.

Specify the next point or [Arc/Close/Half-Width/Length/Cancel/Width/]:

The second line contains options (queries) used during further operation of the command.

After finishing working with any option (except Close), the command is ready to continue working and the prompt is re-displayed on the command line:

Specify next point or [Arc/Close/Half-Width/

LENGTH/Cancel/Width/]:

Description of options

Close– draws a segment that closes the constructed polyline (connects the last point with the first) and stops the command. If the last segment was an arc, then a closing arc is constructed. Sometimes this causes certain difficulties. In this case, create a short line segment before closing the polyline.

Cancel– deletes the last constructed polyline segment; When the option is applied several times in a row, the corresponding number of segments is deleted.

Width– setting the line width. When you select this option, additional queries follow:

Initial width<0.0>:

This request must be answered by entering a new line width from the keyboard

or by pressing the enter key, accept the current value. When you enter a new value, it appears in the query string after a colon.

For example, the value 0.8 was entered. This is followed by a new request:

Final width<0.8>:

When drawing a line of constant width, press the enter key. If you move the mouse instead, the program will perceive the cursor displacement as the value of the final width of the polyline, which leads to unexpected consequences. The entered width will be used for all subsequent occurrences of a command in a given file up to its explicit redefinition.

ATTENTION: if the line thickness is zero, the polyline is drawn with the thickness set by the command LINE WEIGHT , and for any thickness other than zero, the LINE WEIGHT settings are ignored.

The command allows you to draw a line of variable thickness, which is used, for example, when drawing arrows , for which it is enough to set the initial thickness of the polyline equal to 0.0, and the final one equal to the width of the arrow.