draw 3d polyline in autocad
3D Polyline
A 3D Polyline is a specialized version of a polyline that can have dissimilar elevation at every vertex.
The 3D Polyline command is available from the Describe pulldown menu, from the Draw toolbar or at the Command: line (3DP). Unless disabled, the Polyline 3D Options dialog box will appear after starting Carlson'due south 3D Polyline command.
Prompt for Elevation/Slope: When this option is enabled, the top for each new vertex will be displayed as a prompt, giving you an opportunity to override that value past typing in a new tiptop. When disabled, the summit to be assigned to each new vertex is displayed but you are not given a chance to assign a different superlative.
Prompt for Coordinate Point Elevations: This option only applies if yous specify a point number from an associated Coordinate (.CRD) file to establish the X,Y,Z values for a new 3D Polyline vertex. When this option is enabled, the acme for each new vertex will be displayed as a prompt, giving you lot an opportunity to override that value past typing in a new top. When disabled, the elevation to exist assigned to each new vertex is displayed merely y'all are not given a adventure to assign a unlike tiptop.
Elevation Adder: Use this setting to add a constant elevation value to all default meridian values.
Cheque Pinnacle Range: Enabling this option allows you lot to monitor elevations assigned to 3D Polyline vertices and event a alarm (with options to right) if the elevation falls outside the specified range. If the proposed elevation of a 3D Polyline vertex falls outside the range specified, the Warning: Elevation Range dialog box is displayed. The Alert: Tiptop Range dialog box allows you to assign a new elevation to the vertex, adjust the acceptable range of elevations or plow OFF monitoring of elevations. 
Skip Inline Vertices for Extend: This setting applies to the "Extend" option with the Total Distance SubMenu option. If enabled, an existing vertex will dissolve when lengthening a 3D Polyline segment.
Auto-Zoom Mode: This setting provides 3 options for Automobile-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 drawing screen. The "Proximity" setting will activate the "Proximity Level" setting and will automatically re-center the view only if the current polyline vertex is within a certain altitude of the limits of the cartoon expanse. The "Always" option will automatically re-center the view after each new polyline vertex is added.
In the "Polyline Properties" department of the dialog box you accept several alternatives for specifying the layer, color and linetype of the newly created polyline.
Use Current Drawing Backdrop: Select this pick if y'all want the layer, color and linetype of the newly created polyline to match those currently set in the drawing.
Layer: Use this setting to manually assign the layer for the newly created polyline. You can type in the new layer proper name, use the "Select" button to cull an existing layer from the drawing'south layer listing or use the "Pick" push button to select an entity in the drawing and match its layer.
Set Color: Utilize this button to manually specify a color for the newly created polyline.
Width: Specify the width of the newly created polyline.
Linetype: Apply the "Select" push button to manually specify a linetype for the newly created polyline.
Select Code: This option allows you lot to prepare the layer, colour and linetype of a new polyline past using the properties assigned to a Field to Finish field code. The field code is selected from an existing Field Lawmaking table (.FLD) file that has been previously specified in the Point Defaults dialog box.
Prompts
For A 3D Polyline With A Specified Elevation At Each Vertex:Command: 3dp
[Go along/Extend/Follow/Options/<Selection point or point numbers>]: screen pick a point
Interpolate/Object/<Elevation> <0.00>: 150.50
Z: 150.l
[Arc/Close/Distance/Follow/Undo/<Pick point or point numbers>]: screen pick a point
Pct/Ratio/Elevation/Caste/Object/Osnap[.]/Next betoken or elevation<Interpolate>: 155.25
Z: 155.25, Hz dist: 324.63, Gradient dist: 324.66, Gradient: one.5% Ratio: 68.3:i
[Arc/Close/Distance/Extend/Follow/Line/Undo/<Pick point or point numbers>]: screen pick a signal
Per centum/Ratio/Height/Degree/Object/Osnap[.]/Next point or acme<Interpolate>: 148.12
Z: 148.12, Hz dist: 272.88, Gradient dist: 272.98, Slope: -two.6% Ratio: -38.three:i
[Arc/Shut/Distance/Extend/Follow/Line/Undo/<Pick point or point numbers>]: press Enter
Command:
For A 3D Polyline With Interpolated Elevations At One 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/<Pick signal or bespeak numbers>]: screen pick a bespeak
Percent/Ratio/Elevation/Degree/Object/Osnap[.]/Side by side betoken or elevation<Interpolate>: screen pick a point
This indicate top volition be interpolated upon completion.
Pct/Ratio/Superlative/Degree/Object/Osnap[.]/Side by side point or elevation<Interpolate>: screen pick a point
This betoken elevation will be interpolated upon completion.
Percent/Ratio/Top/Caste/Object/Osnap[.]/Next point or elevation<Interpolate>: screen pick a point
This point elevation will exist interpolated upon completion.
Percent/Ratio/Superlative/Degree/Object/Osnap[.]/Next indicate or elevation<Interpolate>: 94.44
Z: 94.44, Hz dist: 79.39, Gradient dist: 122.88, Slope: 0.viii% Ratio: 122.4:ane
[Arc/Shut/Distance/Extend/Follow/Line/Undo/<Choice signal or point numbers>]: printing Enter
Command:
Note that the difference betwixt this and the previous example is that, instead of entering an tiptop for each vertex, nosotros are screen picking another new vertex. Each time nosotros neglect to enter an top nosotros are notified that, "This point elevation volition be interpolated upon completion." After we specify "94.44" as the meridian of the last vertex, the gradient of the interpolated segments is calculated using the total summit change and the total length of all interpolated segments. Now, the elevations of all vertices tin can be determined and fix based on the resulting gradient.
Options and SubMenu Options
Once all settings have been specified and the "OK" button is picked, the options shown below are bachelor from the Command: line. To issue any of these options, simply blazon in the capitalized portion of the Option at the Command: line and press Enter. The default option is always shown betwixt angle brackets < Default >.When starting a new 3D Polyline, the initial set of options help you in setting the X,Y location of the first vertex:
Proceed: This pick allows y'all to select an existing polyline to which you'd like to add more line or arc segments. When prompted to "Select a polyline to go along or extend:", y'all may pick anywhere on the existing polyline and the new segment will begin at the ending vertex nearest your cursor. New line or arc segments can be added by screen-picking or using the options at the Command: 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 beneath. Some of these options create additional segments at the end of the existing polyline and some permit you to change the length of the catastrophe segment of the polyline. When prompted to "Select a polyline to continue or extend:", yous may option anywhere on the existing polyline and the "Extend" will occur at the ending vertex nearest your cursor. In one case finished Extending, the new segments are automatically joined to the original polyline.
[I / R / L / S / T / A / B / E / U / X / Help / <Enter or Choice Distance>]
I - Input mode - This option toggles the altitude input betwixt feet & inches (will prompt first for feet, then prompt again for inches) and decimal feet.
R - Right rotate - From the ending vertex, turns the pointer 90-degrees to the right and and so prompts for a distance.
L - Left rotate - From the ending vertex, turns the pointer 90-degrees to the left and then prompts for a distance.
Southward - Switch management - From the catastrophe vertex, turns the pointer 180-degrees and then prompts for a distance.
T - Total distance - Prompts you to "Enter total altitude (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 electric current altitude is entered, this option will lengthen the existing segment. This choice is also affected past the Skip Inline Vertices for Extend setting in the Polyline 3D Options dialog box. If "Skip Inline Vertices for Extend" is enabled, then the existing vertex will be dissolved when lengthening a segment. If the setting is not enabled, so the existing vertex will be left intact and an additional segment will be created inline.
A - Angle alter - From the catastrophe vertex, prompts you to "Enter Angle (ddd.mmss):" to turn the pointer by a specified bending and then prompts for a distance.
B - Bearing/Azimuth/Turned/Deflection - From the catastrophe vertex, this option allows you to set the pointer direction by specifying an Bending. The Bending format is Qdd.mmss and there are a diversity of ways to utilise the "Q" value to specify the Angle. See here for more.
Due east - Extend to border - Extends current segment to some other line or entity
U - Undo - Undo last action
X - Quit extend manner - Returns to normal 3D Polyline Draw mode
Help - Displays the descriptions of the Extend options
Enter or Pick Distance - Altitude to extend the current segment
Follow: This option allows you to trace all or a portion of an existing polyline. After issuing the "Follow" selection, you are prompted to "Select the polyline to Follow:" and so to "Specify the beginning follow point:". After snapping to a starting point on the polyline, you are asked whether y'all want to "Interpolate follow vertices elevations?". Subsequently answering Yes or No, yous will then be prompted to specify the "Last follow point or follow altitude:" where yous tin snap to some other point on the polyline or type in a distance to trace the existing polyline.
Options: This will display the Polyline 3D Options dialog box.
Pick Point or Signal Numbers: This is the default prompt for the command. From here you can gear up a new polyline vertex past screen picking, entering coordinates in 10,Y format or entering a signal number from the associated Coordinate (.CRD) file.
After setting its location, the next set up of options help you calculate the elevation of the initial vertex:
Interpolate: This option volition set the elevation of the vertex by calculating the slope betwixt other vertices of known elevation.
Object: This option allows you lot to "Select an elevation characterization or a point on a polyline:" to set the tiptop of the vertex. Superlative labels such as "FFE: 124.85" or "Z: 124.85" tin can be selected.
Elevation: This is the default option and prompts you to type in the tiptop for the vertex.
For subsequent 3D Polyline vertices, several options are added to assist you in setting the X,Y location of each new vertex:
Arc/Line: New polyline segments can be either an Arc or a Line segment. If the last polyline segment drawn was a LINE, and then the "Arc" selection will be shown as an available option; however, if the last polyline segment fatigued was an ARC, then the "Line" option volition exist available.
When in the "Arc" manner, there are many additional SubMenu options bachelor to you lot for creating an arc segment within 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 Second 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 option allows you to first enter a altitude for the new Line segment and then to specify the management using one of three methods: Cursor, Line or Angle.
Cursor - This method will describe the polyline segment in the direction of your cursor position.
Line - This method prompts you to select a line or polyline segment to which information technology will draw a parallel segment.
Angle - This method prompts you for an Angle to determine the direction of your new polyline segment. The Angle format is Qdd.mmss and in that location are a variety of ways to use the "Q" value to specify the Angle. See here for more.
Disengage: Disengage the last fatigued polyline segment.
Afterwards setting subsequent vertices, several more options are added to help you calculate the tiptop of each new vertex:
Pct: This pick allows you to specify the slope in Percentage format (3%) from the previous vertex.
Ratio: This option allows yous to specify the slope in Ratio format (for 3:1, enter 3) from the previous vertex.
Degree: This option allows you to specify the gradient angle in decimal degree format (dd.dddd) from the previous vertex.
Osnap[.]: Using the [.] volition toggle Running OSNAP settings ON or OFF.
Angle Entry Methods
The Angle format is Qdd.mmss where: Q=quadrant/bending, d=degrees, k=minutes and south=seconds.
The Quadrant/Angle can be specified equally:
1=NE (NorthEast)
2=SE (SouthEast)
3=SW (SouthWest)
four=NW (NorthWest)
5=AZ (AZimuth)
6=AL (turned Angle-Left)
vii=AR (turned Bending-Right)
8=DL (Deflection bending-Left)
9=DR (Deflection angle-Right)
Pulldown Menu Location: Draw
Keyboard Command: 3DP
Prerequisite: None
Source: http://files.carlsonsw.com/mirror/manuals/Carlson_2014/source/General/Draw/3D_Polyline/3D_Polyline.html
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