What are the PLINE commands in CAD?

pline stands for polyline, and in AutoCAD, there are several commands that can draw a polyline:

A line segment or arc drawn directly with the pline command (shortened command pl) is a polyline.

Rectangles drawn with the Rectangle command (REC) are polylines.

with polygons. The polygons drawn by the command (pol) are polylines.

Lines drawn with the revcloud command are polylines.

In CAD, all polylines can be made with the polyline command PE. Polylines and splines can also be converted using the Polyline command!

Here are the steps to modify a polyline:

1.On the Modify menu, click Object Polyline.

2.Select the polyline you want to modify.

The selected object is not a polyline.

Do you want to convert it to a polyline? :Input.

y or n or press.

Enter.

If you enter y, the object is converted to a single-segment 2D polyline. Use this operation to merge lines and arcs into polylines. If.

The peditaccept system variable is set to.

1, the prompt will not be displayed, and the selected object will be automatically converted to a polyline.

Enter c (Closed) to create a closed polyline.

Enter j (Merge) to merge continuous lines, arcs, or polylines.

Enter w (width) to specify the new uniform width of the entire polyline.

Enter e (vertex) vertices.

Enter f (fit) to create a series of arcs that merge each pair of vertices.

Enter s (Spline) to create an approximate line of the spline.

Input d (non-curved) deletes other vertices inserted by the fit or spline and straightens all polyline segments.

Enter L (Linetype Generation) to generate a linetype that passes through the vertices of the polyline in a continuous pattern.

Enter u (discard) to return the start of the pedit.

4.Enter the x (exit) end command.

There is only one pline command, but the parameters in it are more finely divided. You can try the parameters one by one to see what the final effect is, and if you are not sure, you can directly check the CAD help file.

is a polyline command and can be used as follows:

1.First of all, you need to open the CAD software.

Enter the pl command and the message "Specify a starting point" is displayed.

2.Prompt to specify the next point, or to draw an arc and specify a line weight. Now let's draw a line segment first.

3.As long as you don't press the space bar or the esc key, you will be prompted with the command to "specify the next point" constantly.

4.At this point, you can enter the "a" command to draw the curve, and the following command is also repeated repeatedly.

5.According to the side-grip prompt, enter "L" and you can continue to draw a straight line.

6.Once the drawing is complete, you can see that this is a complete polyline. This solves the problem of using the pl command in cad.

1. Open the CAD software.

2. Enter the pl command, prompting "Specify starting point".

3. Prompt to specify the next point, or draw an arc and specify the line weight. Now let's draw a line segment first.

4. As long as you don't press the space bar or esc key, it will constantly prompt the command of "specify the next point".

5. Enter the "a" command at this time to draw the curve.

6. At this time, the following instructions are also repeated.

7. According to the prompt, after entering "L", you can continue to draw a straight line.

8. After the drawing is completed, you can see that this is a complete polyline.

In CAD, the main differences between PLINE and LINE are: different corners, different endpoint controls, and different merging.

First, the corners are different.

1. Pline: Pline is a polyline, and the corners are connected by straight lines and arc segments.

2. line: line is a straight line segment, and the places with corners are not connected when painting.

Second, the endpoint control is different.

1. Pline: The straight line drawn with Pline is controlled by 2 endpoints.

2. line: The straight line drawn with line is controlled by 3 endpoints.

Third, the merger is different.

1. Pline: You can directly merge the straight lines drawn with Pline.

2. line: You can't merge the straight lines drawn with line directly.

One is continuous, and the other is independent of each line segment!

Many times it can be shared, but there are still some differences, 1. Polyline ("PL") is composed of straight line segments and arc segments, and can have a wide graphic object (such as drawing arrows).

2. The polyline drawn with the "pl" command belongs to a graphic object, but the area of the figure can be calculated by using the "x" command (after the irregular closed drawing frame is converted into a polyline, the area of the figure can be calculated by the "list" command with a single command: "modify" and "decompose" command) to decompose the straight line segment and arc segment of the polyline into separate objects, that is, the polyline that originally belonged to an object is decomposed into multiple straight lines and arc objects, and there is no longer line width information after decomposition.

3. Use the command "pe" of polyline to convert connected elements into polyline. For example, and perimeter (the area can be calculated by converting the area to the region "reg" in a closed graphic), but if you do not process it, the area and perimeter cannot be calculated in the closed graph box.

In fact, when using the plan to extrude into a three-dimensional view, it is also necessary to use the merge command "pe" in the polyline and the region "reg" before it can be stretched. In general, polylines still have a lot of advantages, and you can slowly experience it yourself.

Here are the steps on how to merge multiple connected elements into polylines:

To convert a closed wireframe composed of multiple lines or arcs into a polyline, this process requires the shortcut key "pe" of the command Polyline, press Enter, select "Multiple (M)" Enter, then select the object (the parallelogram drawn) Enter, select "Y" (convert the drawn line or arc to a polyline) Enter, enter the option "Merge (J)" Enter, and the blur distance is 0 Enter. Finally, the parallelogram is synthesized. (Note:.)

When merging with polylines, the objects must be contiguous).

1. In CAD, the PL command is actually an aggregate line, which is generally translated as a multi-meaning line, that is, a command that can help draw arcs and straight lines.

2. CAD is the English abbreviation of CAD-computeraideddesign, which refers to the process of using computer software to produce and simulate the physical design and show the appearance, structure, color, texture and other characteristics of the newly developed goods.

3. The earliest application of CAD is in automobile manufacturing, aerospace and the electronic industry production of large companies. Later, with the evolution of CAD implementation technology and the change of computer, its application range has gradually become wider, and it is now widely used in many fields such as graphic printing and publishing.

4. With the increasing development of computer technology, the improvement of performance and the cheapness of the world, many companies have adopted three-dimensional graphic design. In the past, due to the limitations of computer performance, drawing software could only stay in graphic design and lacked realism, but stereoscopic drawing broke through this limitation and made design blue and bold drawings more substantial. As a result, CAD courses were already offered in many colleges at the beginning of this century.

pline

It is to draw line segments, and he is used to draw a whole figure.

The line is a straight line, and the places where the corners are drawn are not connected.

Lines drawn with line are controlled by 3 endpoints.

The straight lines drawn with pline are controlled by two endpoints, and the straight lines can be merged directly, so it is easier to use pline when drawing commands.