how to draw 3d polyline in autocad
3D Polyline
A 3D Polyline is a specialized version of a polyline that tin can have different superlative at every vertex.
The 3D Polyline control is available from the Draw pulldown menu, from the Draw toolbar or at the Control: line (3DP). Unless disabled, the Polyline 3D Options dialog box will announced afterward starting Carlson'southward 3D Polyline control.
Prompt for Summit/Slope: When this option is enabled, the elevation for each new vertex volition be displayed every bit a prompt, giving you lot an opportunity to override that value by typing in a new elevation. When disabled, the height to exist assigned to each new vertex is displayed merely you are non given a chance to assign a different peak.
Prompt for Coordinate Point Elevations: This option just applies if you specify a point number from an associated Coordinate (.CRD) file to found the X,Y,Z values for a new 3D Polyline vertex. When this choice is enabled, the top for each new vertex will be displayed equally a prompt, giving you an opportunity to override that value past typing in a new meridian. When disabled, the elevation to be assigned to each new vertex is displayed but yous are not given a take a chance to assign a different elevation.
Height Adder: Utilise this setting to add together a constant elevation value to all default elevation values.
Cheque Elevation Range: Enabling this option allows y'all to monitor elevations assigned to 3D Polyline vertices and issue a warning (with options to correct) if the tiptop falls outside the specified range. If the proposed meridian of a 3D Polyline vertex falls exterior the range specified, the Warning: Elevation Range dialog box is displayed. The Alarm: Elevation Range dialog box allows you to assign a new elevation to the vertex, adjust the acceptable range of elevations or turn OFF monitoring of elevations. 
Skip Inline Vertices for Extend: This setting applies to the "Extend" selection with the Total Distance SubMenu option. If enabled, an existing vertex volition dissolve when lengthening a 3D Polyline segment.
Car-Zoom Mode: This setting provides 3 options for Auto-Zoom: Never, Proximity or Always. The "Never" setting requires you to manually Zoom or Pan to go on the current polyline vertex centered in the cartoon screen. The "Proximity" setting will activate the "Proximity Level" setting and volition automatically re-center the view only if the current polyline vertex is inside a certain distance of the limits of the drawing surface area. The "Always" option volition automatically re-center the view after each new polyline vertex is added.
In the "Polyline Properties" section of the dialog box you have several alternatives for specifying the layer, color and linetype of the newly created polyline.
Employ Current Drawing Properties: Select this option if you want the layer, color and linetype of the newly created polyline to match those currently ready in the drawing.
Layer: Apply this setting to manually assign the layer for the newly created polyline. Yous can type in the new layer name, use the "Select" push to choose an existing layer from the drawing'south layer list or use the "Option" button to select an entity in the cartoon and match its layer.
Prepare Color: Use this button to manually specify a colour for the newly created polyline.
Width: Specify the width of the newly created polyline.
Linetype: Use the "Select" button to manually specify a linetype for the newly created polyline.
Select Code: This pick allows you to ready the layer, color and linetype of a new polyline by using the properties assigned to a Field to Terminate field lawmaking. The field code is selected from an existing Field Lawmaking tabular array (.FLD) file that has been previously specified in the Bespeak Defaults dialog box.
Prompts
For A 3D Polyline With A Specified Elevation At Each Vertex:Command: 3dp
[Continue/Extend/Follow/Options/<Pick point or point numbers>]: screen pick a point
Interpolate/Object/<Elevation> <0.00>: 150.50
Z: 150.fifty
[Arc/Close/Distance/Follow/Undo/<Pick point or point numbers>]: screen pick a bespeak
Pct/Ratio/Tiptop/Degree/Object/Osnap[.]/Side by side bespeak or elevation<Interpolate>: 155.25
Z: 155.25, Hz dist: 324.63, Gradient dist: 324.66, Slope: 1.v% Ratio: 68.3:ane
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Selection bespeak or indicate numbers>]: screen pick a betoken
Percentage/Ratio/Tiptop/Degree/Object/Osnap[.]/Next signal or elevation<Interpolate>: 148.12
Z: 148.12, Hz dist: 272.88, Gradient dist: 272.98, Slope: -ii.6% Ratio: -38.three:1
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Selection point or betoken numbers>]: press Enter
Command:
For A 3D Polyline With Interpolated Elevations At I or More Vertices:
Command: 3dp
[Continue/Extend/Follow/Options/<Pick point or point numbers>]: screen pick a point
Interpolate/Object/<Elevation> <0.00>: 91.73
Z: 91.73
[Arc/Close/Distance/Follow/Undo/<Option indicate or point numbers>]: screen pick a point
Percent/Ratio/Tiptop/Degree/Object/Osnap[.]/Next point or peak<Interpolate>: screen pick a point
This point elevation will exist interpolated upon completion.
Percent/Ratio/Tiptop/Degree/Object/Osnap[.]/Next indicate or pinnacle<Interpolate>: screen choice a betoken
This signal elevation volition be interpolated upon completion.
Per centum/Ratio/Elevation/Caste/Object/Osnap[.]/Next signal or elevation<Interpolate>: screen pick a point
This point tiptop will exist interpolated upon completion.
Percent/Ratio/Peak/Caste/Object/Osnap[.]/Side by side betoken or acme<Interpolate>: 94.44
Z: 94.44, Hz dist: 79.39, Slope dist: 122.88, Slope: 0.eight% Ratio: 122.iv:one
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Pick signal or point numbers>]: press Enter
Command:
Annotation that the divergence between this and the previous instance is that, instead of entering an elevation for each vertex, we are screen picking some other new vertex. Each fourth dimension we neglect to enter an acme we are notified that, "This point elevation will be interpolated upon completion." Afterward we specify "94.44" as the summit of the last vertex, the slope of the interpolated segments is calculated using the total height alter and the full length of all interpolated segments. Now, the elevations of all vertices tin be determined and set based on the resulting slope.
Options and SubMenu Options
One time all settings have been specified and the "OK" button is picked, the options shown below are available from the Command: line. To issue any of these options, simply blazon in the capitalized portion of the Option at the Command: line and printing Enter. The default choice is ever shown between angle brackets < Default >.When starting a new 3D Polyline, the initial gear up of options assist y'all in setting the Ten,Y location of the first vertex:
Continue: This option allows you to select an existing polyline to which y'all'd like to add more line or arc segments. When prompted to "Select a polyline to continue or extend:", you may pick anywhere on the existing polyline and the new segment will begin at the catastrophe vertex nearest your cursor. New line or arc segments can be added by screen-picking or using the options at the Control: line. Once finished adding segments, they are automatically joined to the original polyline.
Extend: This option gives you many ways to lengthen or shorten an existing polyline using the abbreviated SubMenu options shown below. Some of these options create boosted segments at the end of the existing polyline and some allow yous to change the length of the catastrophe segment of the polyline. When prompted to "Select a polyline to go along or extend:", you may selection anywhere on the existing polyline and the "Extend" will occur at the ending vertex nearest your cursor. Once finished Extending, the new segments are automatically joined to the original polyline.
[I / R / L / Southward / T / A / B / Eastward / U / X / Help / <Enter or Pick Altitude>]
I - Input mode - This option toggles the distance input between feet & inches (will prompt outset for anxiety, then prompt again for inches) and decimal feet.
R - Right rotate - From the ending vertex, turns the pointer xc-degrees to the correct and then prompts for a distance.
L - Left rotate - From the ending vertex, turns the pointer 90-degrees to the left and and then prompts for a altitude.
S - Switch direction - From the ending vertex, turns the pointer 180-degrees and then prompts for a distance.
T - Total distance - Prompts y'all to "Enter total distance (100.00)" and displays the current length of the segment in parentheses. If a number smaller than the current distance is entered, this option will shorten the existing segment. If a number larger than the current distance is entered, this option will lengthen the existing segment. This option is besides affected by the Skip Inline Vertices for Extend setting in the Polyline 3D Options dialog box. If "Skip Inline Vertices for Extend" is enabled, so the existing vertex will be dissolved when lengthening a segment. If the setting is non enabled, and then the existing vertex volition exist left intact and an additional segment will be created inline.
A - Angle change - From the ending vertex, prompts you to "Enter Angle (ddd.mmss):" to plough the pointer by a specified angle then prompts for a distance.
B - Begetting/Azimuth/Turned/Deflection - From the ending vertex, this option allows you to set the arrow direction past specifying an Angle. The Angle format is Qdd.mmss and there are a diverseness of ways to use the "Q" value to specify the Angle. See here for more.
Due east - Extend to border - Extends current segment to another line or entity
U - Undo - Undo final action
Ten - Quit extend mode - Returns to normal 3D Polyline Draw mode
Help - Displays the descriptions of the Extend options
Enter or Pick Distance - Distance to extend the current segment
Follow: This option allows y'all to trace all or a portion of an existing polyline. After issuing the "Follow" option, you lot are prompted to "Select the polyline to Follow:" and and then to "Specify the first follow point:". After snapping to a starting point on the polyline, you are asked whether yous desire to "Interpolate follow vertices elevations?". After answering Yes or No, you will then be prompted to specify the "Concluding follow point or follow altitude:" where you can snap to another point on the polyline or type in a distance to trace the existing polyline.
Options: This will display the Polyline 3D Options dialog box.
Selection Point or Point Numbers: This is the default prompt for the command. From here you can set a new polyline vertex past screen picking, entering coordinates in X,Y format or inbound a signal number from the associated Coordinate (.CRD) file.
After setting its location, the next ready of options help you lot calculate the elevation of the initial vertex:
Interpolate: This option will gear up the elevation of the vertex by computing the slope between other vertices of known pinnacle.
Object: This pick allows you to "Select an peak label or a signal on a polyline:" to set the elevation of the vertex. Elevation labels such as "FFE: 124.85" or "Z: 124.85" can be selected.
Height: This is the default option and prompts y'all to type in the elevation for the vertex.
For subsequent 3D Polyline vertices, several options are added to assist you lot in setting the 10,Y location of each new vertex:
Arc/Line: New polyline segments can be either an Arc or a Line segment. If the terminal polyline segment fatigued was a LINE, then the "Arc" option will exist shown as an bachelor option; all the same, if the last polyline segment drawn was an ARC, so the "Line" option will be available.
When in the "Arc" mode, there are many boosted SubMenu options available to y'all for creating an arc segment inside the new polyline. The options are generated directly from the standard CAD version of the PLINE control and include Radius Point, Radius Length, Arc Length, Chord and 2d Point (Point on Curve).
Close: This option will create a new Line or Arc segment back to the starting vertex of the polyline and results in a closed polyline.
Distance: This pick allows you to first enter a distance for the new Line segment and and then to specify the direction using i of three methods: Cursor, Line or Angle.
Cursor - This method will draw the polyline segment in the direction of your cursor position.
Line - This method prompts you to select a line or polyline segment to which it will draw a parallel segment.
Angle - This method prompts you for an Angle to make up one's mind the direction of your new polyline segment. The Angle format is Qdd.mmss and at that place are a variety of ways to utilise the "Q" value to specify the Angle. Come across here for more.
Undo: Undo the terminal fatigued polyline segment.
Later on setting subsequent vertices, several more options are added to help yous calculate the summit of each new vertex:
Percent: This option allows you to specify the slope in Pct format (3%) from the previous vertex.
Ratio: This selection allows yous to specify the gradient in Ratio format (for 3:i, enter 3) from the previous vertex.
Degree: This option allows you to specify the gradient angle in decimal caste format (dd.dddd) from the previous vertex.
Osnap[.]: Using the [.] will toggle Running OSNAP settings ON or OFF.
Angle Entry Methods
The Angle format is Qdd.mmss where: Q=quadrant/bending, d=degrees, g=minutes and south=seconds.
The Quadrant/Angle can be specified as:
one=NE (NorthEast)
2=SE (SouthEast)
three=SW (SouthWest)
4=NW (NorthWest)
five=AZ (AZimuth)
half dozen=AL (turned Angle-Left)
7=AR (turned Angle-Correct)
8=DL (Deflection angle-Left)
9=DR (Deflection bending-Right)
Pulldown Menu Location: Draw
Keyboard Control: 3DP
Prerequisite: None
Source: http://files.carlsonsw.com/mirror/manuals/Carlson_2014/source/General/Draw/3D_Polyline/3D_Polyline.html
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