Introduction to Polyline in AutoCAD
AutoCAD is computer-aided designing software which have many different types of 2d and 3d commands for making its work easy. We have many 2d commands in this software for making a shape in this software in our drawing work. Polyline is one of those 2d commands which help in making of 2d shape by using a number of connected line segments. Here in this article we will discuss different parameters of the polyline command of auto cad and learn about how we can make the shape with it. So let us start our discussion about this topic and get introduced to it.
How to Use Polyline Command in AutoCAD?
We can understand Polyline in AutoCAD as a line which has a number of connected line in one shape without any break. We will discuss it with an example in this article but before starting our learning let us have a look at the working screen of this software.
Step 1: At the top of the working screen there is a ribbon of menu bar which has different tabs on it such as Home tab, Insert tab, View tab, and many others, below this bar we have a working window for showing our working in this software with the navigation bar, UCS icon and view cube for helping us in our drawing work, below this window we have some navigation command for handling our working during the making of drawing in this software.
Step 2: You can find Polyline command in the Draw menu of the Home tab of this software with this icon.
Step 3: Or you can press PL from keyboard then press the enter button of the keyboard for having this command active.
Step 4: Now take the first point from where you want to start this polyline then make your desired shape with a line in continuation of this polyline command.
Step 5: Let us take line command and understand polyline more clearly. Take line command from the draw menu of the Home tab.
Step 6: And draw the same pattern of the line as we draw with polyline command. Now when you select both of them one by one with mouse cursor you can see polyline will select in the single selection and shows you different connected line segments but if we see the pattern of line command then it will select one segment of the line pattern. So polyline gives you the number of the connected line segments in one shape of the structure.
Step 7: Now again take polyline command for analyzing different parameters of it. When you select it you can see there is a different option of polyline at the bottom on the working window of this software in the parameters box of this command.
Step 8: Now draw a polyline then press A button of the keyboard for the Arc option of this command then press the enter button of the keyboard.
Step 9: Then select the Second Pt option from the list of options of this command for specifing point of arc then press the enter button of the keyboard.
Step 10: Now click on a point as the center point of arc then again click on another point as the endpoint of arc for making it.
Step 11: Now click again and again on a new point as the endpoint of the next arc and you can make a number of the arc with it like this.
Step 12: And for leaving this arc option of polyline command press L from keyboard then press enter button of the keyboard for back into line form of polyline command.
Step 13: And again you can draw the line with this command like this.
Step 14: Now let us understand the Halfwidth option of polyline command from options of this command. For the Halfwidth option press, the H button of the keyboard then presses the enter button of the keyboard.
Step 15: Now give the start value of the halfwidth option by keyboard entry. I will give it as 2 then press the enter button of the keyboard.
Step 16: Again specify the end value of the halfwidth option from keyboard entry. I will give it as 0 then press the enter button of the keyboard.
Step 17: Now when you drag mouse cursor you can draw the arrow-like structure and make click to give the length of this arrow or you can enter your desired value by keyboard entry method. Now you can draw the line again because we had taken the value of end width as 0.
Step 18: You can increase the wide of polyline in the continuation of any structure. For increasing width of polyline just take Halfwidth option again and enter the value of start width then press enter button of keyboard and enter end width then press enter button of the keyboard make sure both values should be the same. Now you can draw a line with increased width like this. You can make any structure with this line.
Step 19: You can also make an arc with this increased width line. For this take the Arc option from the polyline command option again by pressing a button of the keyboard then press the enter button of the keyboard. Then take the Second pt option of arc option as we did previous. Now take the midpoint of arc then endpoint for making an arc. Now you can make the number of the arc with an increased width line like this.
Step 20: Now again for decreasing the width of the polyline, take the Halfwidth option of polyline line command again and follow same steps as we did in previous just take the value of start width and end width as 0. Now you can draw the line again like this. Now if you want to close the structure then press the C button of the keyboard then press the enter button of the keyboard.
Step 21: Now start point of starting line and endpoint of ending line will connect to each other and your structure will close like this.
Step 22: Now when you select this shape it will show you different segments of line connected in this shape.
Now after this article you can understand what Polyline is in auto cad and how you can handle its parameters for making a shape with it. You can analyze its parameters more and more by practicing on it for making a good drawing with the help of the polyline command of the auto cad.
This is a guide to Polyline in AutoCAD. Here we discuss the Introduction and steps to use Polyline in AutoCAD. You can also go through our other related articles to learn more –