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DocsNanocad 25Geometric Objects

Geometric objects

Base elements to create a drawing are graphic primitives – nanoCAD objects, which are whole objects and cannot be separated with the Explode command (Modify menu).

Construction and Reference Geometry

Point

Ribbon:
Home, Draw –
Draw >
Point
Menu:
Draw –
Point >
Single Point
Toolbar: Draw –
Hotkeys: CTRL+ALT+N
Command line:
PO,
POINT

The command allows the creation of point objects which can be shown as a common point or a special symbol. Points are used, for example, for measure (the Divide and Measure commands) and as reference points for object snap. A point is shown as a special symbol because a point object of the default style is hard to see on the screen. A size of Point objects can be specified according to the screen or in absolute units.

The Point Styles dialog box (Format menu) allows changing of the size of a point object and its style.

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Note

Changing the size and/or style of point objects affect not only new objects, but also created objects.

The system variable - PDMODE controls shape and display of Point object on the screen. Special symbols and their values to display point in the screen:

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When a value of PDMODE=1 point is invisible on the screen.

System variable PDSIZE controls a size of special symbols (for values of PDMODE, different from 0 and 1).

  • PDSIZE=0 by default specifies the size of symbols, which equals 5% of graphic area height.
  • PDSIZE>0 specify absolute value of point display.
  • PDSIZE<0 specify point size in percentage of graphic area height.

Command prompts:

Specify point: Specify the point coordinates or click on the drawing.

Specify point: Specify the next point or press ESC to finish the command.

Size and Style of Points

Ribbon: Draw – Draw > Points Type

Menu: Format – Points Styles…

Command line: DDPTYPE

The Point Style dialog box is used to display and change the current style and size of a point. The current display style of the point is highlighted. Click on any symbol to change display style.

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Parameters:

Point Size: Specifies point symbol size (PDSIZE system variable). Entered value can specify a size

in percentage of screen size or in absolute document units.

Set Size Relative to

Screen

Shows Point size as a percentage of the screen size. To update the size after

zooming, you need to update the drawing with the Regeneration (REGEN) command.

Set Size in Absolute units

Enables display mode of the Point Size in absolute document units. The point size

changes when zooming.

To change the current size and style of a point:

    1. Select the style.
    1. Turn the required display size of point symbol on.
    1. Enter the point size in the Point Size dialog.

Infinite Lines

Lines, infinite in one or both directions, are called rays and construction lines. These lines can be used as auxiliary lines to create objects. It is recommended to create auxiliary on a separate layer, which can be frozen or made unprintable. Auxiliary lines can be edited; copied, replaced, and rotated.

Ray

Ribbon: Home, Draw – Draw > Ray

Menu: Draw – Ray

Toolbar: Draw –

Command line: RAY

This command creates a ray – starting in a point and a semi-infinite construction line. The direction of ray is specified by the second point. The command prompt Specify through point: repeats to create several rays. Origin point is the same for all created rays.

Command prompts:

Specify start point: Specify start point. Specify through point: Specify second point. Specify through point: Specify second point of the next rayor press ENTER to finish the command.

Construction Line

Ribbon: Home, Draw – Draw > Construction line

Menu: Draw – Construction Line

Toolbar: Draw –

Command line: XL, XLINE

This command creates an infinite construction line. The direction of construction line is specified by the second point (origin point is the same for all created lines). The command prompt Specify through point: repeats to create several lines.

Command options:

Hor Creation of an infinite line through the specified point and parallel X axis.

Ver Creation of an infinite line through the specified point and parallel Y axis.

Ang Creation of an infinite line through the specified point with specified angle to X-axis or selected linear object.

The option causes the following prompt to appear in the command line:

Enter angle of xline (0) or [Reference]:

Options:

Angle - Enter angle value

Reference - select linear object. Angle will be calculated related to this object counterclockwise.

Bisect Creation of an infinite bisector line through vertex of an angle.

Offset Creation of an infinite line parallel selected object with specified offset.

Command prompts:

Specify offset distance [Through/]

Options:

Offset distance – distance between xline and selected object

Through – drawing xline through specified point and parallel selected linear object.

Command prompts for drawing xline through point:

Specify start point or
[Hor/Ver/Ang/Bisect/Offset/]:
Specify start point.
Specify
through point:
Specify second
point.
Specify through point:Specify next point or press ESC
to finish the
command.

Command prompts for drawing xline parallel axis:

Specify start point or [Hor/Ver/Ang/Bisect/Offset/]: Specify through point: Specify through point: Select Hor or Ver. Specify point. Specify next point or press ESC to finish the command.

Command prompts for drawing xline with specified angle:

Specify start point
or
[Hor/Ver/Ang/Bisect/Offset/]:
Select Ang.
Enter angle of xline (0) or
[Reference]:
Specify through point:Enter angle
value, press ENTER

If you selected Reference option: Select a line object or [?/]: Enter angle of xline (0) or [Reference]: Specify through point:

Specify point.

Select line.

Enter angle value, press ENTER Specify point.

Command prompts for drawing bisector xline:

Specify start point or [Hor/Ver/Ang/Bisect/Offset/]: Specify angle vertex point: Specify angle start point: Specify angle end point:

Select Bisect.

Specify angle vertex point. Specify angle start point. Specify angle end point, press ENTER.

Command prompts for xline parallel linear object:

Specify start point or [Hor/Ver/Ang/Bisect/Offset/]: Specify offset distance [Through/]

Select a line object or [?/]:

Specify side to offset:

If Through option is selected: Select a line object or [?/]: Specify through point:

Select Offset.

Specify offset distance for xline.

Select line.

Specify side to offset.

Select line.

Specify point for xline, press ENTER.

Linear Objects

Line

Ribbon: Home, Draw – Draw > Line

Menu: Draw – Two points

Toolbar: Draw –

Hotkeys: CTRL+ALT+L

Command line: L, LINE

The two point segment is one of the base primitives and is often used for drawing. Segments can be drawn separately and as a set of several segments, merged into zigzag lines. Each segment closed or unclosed line is a separate segment, which is edited separately.

Command options:

Undo Deletes the last created segment of a created set of segments in an inverse order.

Close Creates the segment, connecting the last point of the last segment with the start point of the first segment. This option is available after the creation of the second segment.

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Command prompts:

Specify first point: Specify point 1. Specify next point: Specify point 2. Specify next point [Undo]: Specify next point or select Undo to cancel previous action. Specify next point [Undo/Close]: Specify next point or press ENTER to finish the command.

Please, note: If you press ENTER or SPACEBAR, when prompted to enter the first point of a line, the line will start from the end point of the last line, polyline, or arc created. If the last created object was an arc or arc segment of a polyline, the segment is constructed tangent to the arc or arc segment.

Polyline

Ribbon: Home, Draw – Draw > Polyline

Menu: Draw – Polyline

Toolbar: Draw –

Hotkeys: CTRL+ALT+P

Command line: PL, PLINE, SIMPLEPOLYLINE

A polyline can contain linear and arc segments and their combinations. It is a graphic primitive. Arc segments of a polyline are created by two points, or by angle, center and tangent or arc radius. When creating arc segments by two points, each next segment is tangent to a previous.

Polylines can have different width, which is specified by Width, Halfwidth. Every segment of polyline can have its width value, and it can expand and contract, if widths in a start and end points are different. Start and end points of segments with widths lay on an axis line.

Polylines can be created not only with the PLINE command but also with the RECTANGLE (by two points), FRAME (by three points), POLYGON BOUNDARY, and REVCLOUD.

Created polyline can be edited with the PEDIT command and with ordinary and multipurpose grips. The Explode command (from the Modify menu) transforms a polyline into separate segments and arcs.

Command options of linear segments:

Arc Arc segment mode.

Close Closes a polyline by linear segment.

The option is available when the second point is specified. When the second point is specified the option finishes the command and creates a polyline of one segment.

Halfwidth Halfwidth (distance from axis line to any of ends) of polyline.

When initial halfwidth is specified of polyline segment, this value becomes default value for end halfwidth of a segment. Value of end halfwidth of a segment is the

same for next polyline segments, until this value is changed.

Length Length of segment, created as continuation of the previous segment and in the same

direction. For previous arc segment a new line segment is created tangent.

Undo Deletes the last created segment.

Width Width of following line segment.

When initial width is specified of polyline segment, this value becomes default value for end width of a segment. Value of end width of a segment is the same for next

polyline segments, until this value is changed.

Command options of arc segments:

Angle Center angle of arc segment starting from start arc point (positive value of angle – arc is created counterclockwise; negative value – arc is created clockwise).

When Angle option is selected, the command prompt is shown in the command line after specifying the center angle:

Specify endpoint of arc or [Center/Radius]:

Options:

Center - Specifies center of arc segment. Radius - Specifies radius of arc segment.

Center Center of arc segment.

When Center option is selected, the command prompt is shown in the command line after specifying the center of arc:

Specify endpoint of arc or [Angle/Length]:

Options:

Angle - Specifies center angle of arc segment from start point.

Length - Specifies a length of chord of arc segment. If a previous segment is arc, a next segment is created tangent to it.

Close Closes a polyline with an arc segment.

Direction Direction of tangent in start point of arc segment.

Halfwidth Halfwidth (distance from axis line to any of ends) of polyline segment.

When initial halfwidth is specified of polyline segment, this value becomes default value for end halfwidth of a segment. Value of end halfwidth of a segment is the same for next polyline segments, until this value is changed.

Line Linear segment mode.

Radius Radius of arc segment.

When Radius option is selected, the command prompt is shown in the command line after specifying the arc radius:

Specify endpoint of arc or [Angle]:

Option:

Angle - Specifies center angle of arc segment.

Second pt Second point of arc in three point creation.

Undo Deletes the last added arc segment.

Width Width of following arc segments.

When initial width is specified of polyline segment, this value becomes default value for end width of a segment. Value of end width of a segment is the same for next polyline segments, until this value is changed.

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Command prompts:

Specify start point: Specify point 1.

Specify next point or [Arc/Halfwidth/Length/Undo/ Width]: Specify point 2.

Specify next point or [Arc/Close/Halfwidth/Length /Undo/Width]:

Select Arc to create an arc segment.

Specify endpoint of arc or [Angle/Center/Close/Directi on/Halfwidth/Line/Radius/Se cond pt/Undo/Width]:

Specify endpoint 3 of arc. Press ENTER to finish command.

3D Polyline

Ribbon: Home, Draw – Draw > 3D Polyline

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Menu: Draw – 3D polyline

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Command line: 3DPOLY

3D polyline consists of connected straight line segments. Each vertex of 3D polyline can have different heights (Z-direction coordinate). In contrast to a polyline, when drawing 3D polyline, the functions of constructing arc segments and changing the line width are not supported.

Command options

Undo Deletes the last segment created.

Close Closes the 3D polyline by a line segment.

The option is available when the third point is specified.

Command prompts:

Specify the point: Assign point 1.

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Next point or [Undo]:Assign point 2.
Next point or [Undo]:Assign point 3
Next point or [Close/Undo]:After entering the last
point, press ENTER
to
close the command.

Created 3D polylines can be edited by PEDIT command, as well as with help of custom and multifunctional grips. Command Split converts a polyline into separate segments or arcs.

After constructing 3D polyline, the Vertex field in the Properties window becomes available; there it is possible to select a particular vertex of 3D polyline (in a graphic area it is highlighted) and set the value of its Z-direction coordinate.

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Multiline

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Command line: MLINE

Multiline contains parallel lines (items). You can select style, scale and justification.

By default STANDARD style is used, which consists of two elements. To assign another style, it should be created in advance.

Justification defines which side or center line will be used.

The scale value determines the total width of the multiline in current units. The scale factor is determined based on the width specified in the multiline style definition. For example, with a scale of 2, the multiline is twice as wide as specified in the style description.

Command options:

Justification Determines how the multiline is drawn between the points you specify.

Options:

Top - Draws the multiline below the cursor, so that the line with the most positive offset is at the specified points.

Zero - Draws the multiline with its origin centered at the cursor, so that the MLSTYLE Element Properties offset of 0.0 is at the specified points.

Bottom - Draws the multiline above the cursor, so that the line with the most negative offset is at the specified points.

Scale Controls the overall width of the multiline. The scale factor is based on the

width established in the multiline style definition.

sTyle Selects the multiline style.

Options:

? - list of available styles.

Undo Cancels last entered point.

Close Closes the multiline by joining the last segments with the first segments.

Command prompts:

Specify next point or [Justification/Scale/sTyle]: Specify first point. Specify next point or [Undo]: Specify second point. Specify next point or [Undo/Close]: Specify next points. Press ENTER to finish the command.

Multiline Styles

Ribbon: Draw – Draw > MultiLine Style

Menu: Format – Mline Styles

Command line: MLSTYLE

In Multiline Styles dialog you can create, edit, save and load styles.

Multiline style defines number of elements and their properties. To create multiline style you should create items and define their properties.

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In the bottom part of the dialog there are preview area and buttons to zoom in and zoom out. Also, you can use mouse wheel to zoom:

Zoom in;

Zoom out;

Zoom 1:1**.**

Options:

List of available styles loaded to the document.

State Sets current style.

Name Name of multiline style.

Description Text description.

Buttons

New Creates new multiline style based on selected.

Delete Removes selected style from the current document.

Edit Shows multiline style editor dialog.

Load Loads multiline styles from file to the current document.

Save Saves selected styles to *.mln file.

To create multiline style:

Multiline style contains these parameters:

  • number of elements and their position;
  • offset from center line for each element;
  • linetype and color for each element;
  • joints for each multiline vertex;
  • type of used end caps;
  • color for multiline filling.

Elements with positive offsets are plased on the one side from center line, elements with negative offsets - on the other side.

    1. Start Mline Styles command.
    1. In Multiline Styles select desired style and click button New. New style with default name MlineSyleN, where N – ordinal number starting from 1. will appear. All settings will be based on selected style.
    1. Click button Edit to start editing created style.

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  1. Set desired parameters and click OK.

Options:

Description Text description.

Ends The type of end caps.

Start Sets the type of end caps for start and end of the multiline.

End

Line Displays a line segment across each end of the multiline.

Outer Arc Displays an arc between the outermost elements of the multiline.

Inner Arc Displays an arc between pairs of inner elements. If there’s an odd

number of elements, the center line is unconnected. For example, if there are six elements, inner arcs connect elements 2 and 5 and elements 3 and 4. If there are seven elements, inner arcs connect

elements 2 and 6 and elements 3 and 5. Element 4 is left

unconnected.

Angle Specifies the angle of the end caps.

Show Controls the background fill of the multiline

Fill with Color Sets the background fill color of the multiline. When you choose

Select Color, the Select Color dialog box is displayed.

Joints Controls the display of the joints at the vertices of each multiline

segment.

Items Sets element properties, such as the offset, color, and linetype, of

new and existing multiline elements.

Offset Specifies offset from the middle of the multiline. Elements are

displayed in descending order of their offsets.

Color Specifies color.

Linetype Specifies linetype for element.

Add Item Adds new element.

Delete Item Removes the selected element.

Save Multiline Styles

Multiline Styles can be saved to *.mln file.

  1. In the Multiline Styles dialog click Save button.

  2. In Save Multiline Styles dialog select styles. Click OK.

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  1. Specify the file name and path.

Load Multiline Styles

    1. In the Multiline Styles dialog click Load button.
    1. Specify the file name and path.
    1. In Load multiline style dialog select styles to load in the current document. Click OK.

Polygon

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The command creates polygons with similar sides from closed polylines. A special case of equilateral polygon is a square.

The Explode command (from the Modify menu) allows transferring a polyline which polygon consists of, into segments.

Command options:

Edge Creates a polygon by its edge length. Edge length is specified by its endpoints.

Inscribed Creates an inscribed polygon by specifying a radius of circle, where polygon endpoints lie. If you specify a radius by mouse in graphic area (point 2), at the same time a rotation angle of polygon is specified.

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Circumscribed Creates a circumscribed polygon by specifying a radius of circle, where middles of polygon’s edges lie. If you specify a radius by mouse in graphic area (point 2), at the same time a rotation angle of polygon is specified.

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Command prompts when creating a polygon by side:

Enter number of sides <6>: Enter number of sides for polygon. Specify center of polygon or [Edge]: Select Edge. Specify first endpoint of edge: Specify point 1. Specify second endpoint of edge: Specify point 2.

Command prompts when creating a polygon by radius:

Enter number of sides <6>: Enter number of polygon’s sides. Specify center of polygon or [Edge]: Specify center point 1. Extend <“Inscribed”> or [Inscribed/Circumscribed]: Select option. Specify radius of circle: Specify radius (point 2).

Rectangle

Rectangle is a special case of a closed polyline. The Explode command transforms polyline which rectangle consists of, into segments.

There are three ways to create a rectangle:

  • by two points;
  • from center (with center in the specified point);
  • by three points.

Rectangle by Two Points

Ribbon: Home, Draw – Draw > Rectangle by Two Points

Menu: Draw – Rectangle by > Two points

Toolbar: Draw –

Hotkeys: CTRL+ALT+R

Command line: REC,RECT,RECTANG,RECTANGLE

The command allows creating a rectangle (flat closed rectangular polyline) from two opposite points.

Parameters of rectangle (length, width, area, rotation angle) can be specified and types of angles (right angle, with chamfer or rounded by radius) can be edited with this command.

Command options when a first corner point is specified:

CenteR Switches to the mode of drawing a rectangle from center.

Chamfer Chamfer sizes for rectangle’s corner.

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Elevation Sets the elevation (Z-axis) for the rectangle.

Since the rectangle is a flat figure, the Z-coordinates of its vertices in the UCS are determined by the Elevation parameter.

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Fillet Sets the current radius for fillet of rectangle’s corners.

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Thickness Current three-dimensional height.

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Width Width of polyline to create a

rectangle.

Command options when a second corner point is specified:

Area Area of rectangle when it is created by area and length or by area and width

After a value of area is specified a prompt is shown in a command line:

Calculate rectangle dimensions based on [Length/Width]:

Options:

Length - Specifies length of rectangle.

Width - Specifies width of rectangle.

Dimension Height and length of rectangle.

Rotation Rotation angle of rectangle by entering its value in the command line or specifying on

the screen. The Pick Points option allows specifying a rotation angle by specifying two

points on the screen.

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Command prompts:

Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]:

Specify first corner (point 1).

Specify other corner point or Specify second corner (point 2).

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Isorectangle

Creating a rectangle in the current isoplane.

In the command of creating a rectangle by two point, the Isorectangle option is available only when the isometric mode is enabled: button in the status bar or the Isometric snap type set in the Grid snap of the drafting settings.

    1. Enable the isometry mode.
    1. Select the command to create a rectangle by two points.
    1. Upon the command line prompt: Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width/Isorectangle]: - select Isorectangle.

Command prompts

Specify first corner point or [Dimensions]:

Specify the first corner or select the Dimensions option to create a rectangle by length and width.

Speify other corner point : Specify the second corner.

Creating a Rectangle from Center

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Ribbon: Home, Draw – Draw > Rectangle from Center

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Menu: Draw – Rectangle by > from Center

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Toolbar: Draw –

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Command line: RECTCENTER

The command allows you to draw a rectangle (a flat closed rectangular polyline) with a center at a specified point.

When constructing a rectangle using this command, you can set the rectangle parameters (length, width, area, rotation angle), as well as control the type of its corners (square corners, chamfered or rounded with a radius).

Command options available when specifying the center:

cOrner Switches to the mode of drawing a rectangle by two points.

Chamfer Sets the chamfer size for the rectangle’s corners.

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Elevation Sets the elevation (Z-axis) for the rectangle.

Since the rectangle is a flat figure, the Z-coordinates of its vertices in the UCS are determined by the Elevation parameter.

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Fillet Sets the current radius for fillet of rectangle’s corners.

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Thickness Specifies the 3D height for the rectangle.

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Width Sets the polyline width for building a rectangle.

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Command options available when specifying other corner point:

Area Specifying the rectangle area when it is created by area and specified length or

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by area and specified width.

After setting the area value, the following prompt is displayed in the command line:

Calculate rectangle dimensions based on [Length/Width]:

Options:

Length - Specifies the rectangle’s lenth.

Width - Specifies the rectangle’s width.

Dimensions Sets values for creating a rectangle by length and width.

Rotation Specifies the rotation angle of the rectangle by entering its value in the command line or by specifying a point on the screen.

The Pick Point option allows you to set the rotation angle by specifying two points on the screen.

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Command prompts:

Specify rectangle center or [cOrner/Chamfer/Elevation/Fillet/Thickness/ Width]:

Specifies the center (point 1).

Specify other corner point or [Area/Dimensions/Rotation]:

Specifies the second corner (point 2).

Isorectangle

Creating a rectangle in the current isoplane.

In the command for constructing a rectangle using two points, the Isorectangle option is available only when the isometric mode is enabled: the button in the status bar or the snap type is set to Isometric in the Snap snap setting

Creating a rectangle in the current isoplane.

In the command for creating a rectangle using two points, the Isorectangle option is available only when the isometric mode is enabled: the button in the status bar or the snap type is set to Isometric in the Snap setting.

    1. Enable the isometric mode.
    1. Select the command for creating a rectangle by two points.
  1. At the prompt of the command line: Specify first corner point or [centeR/Chamfer/Elevation/Fillet/Thickness/Width/Isorectangle]: - select Isorectangle.

Command prompts

Specify first corner point or [Dimensions]:

Specify the first corner or select the Dimensions option to create a rectangle by length and width.

Specify other corner point : Specify the second point.

Rectangle by Three Points

Ribbon: Home, Draw – Draw > Rectangle by 3 points

Menu: Draw – Rectangle by > Three points

Toolbar: Draw –

Command line: FRAME

The command creates a rectangle (flat closed rectangular polyline) by corner and two sides.

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Command prompts:

Specify first point of rectangle: Specify rectangle’s corner (point 1). Specify second point of rectangle: Specify length of first side (point 2). Specify third point of rectangle: Specify length of second side (point 3).

Curved Objects

Arc

An arc can be created with different methods. There are 13 methods for creating an arc available in nanoCAD:

three points;

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Command options for creating an arc:

Center Arc center.

Angle Arc angle.

chordLength Chord length.

End End point of arc.

Direction Direction of tangent from the start point of the arc.

Radius Radius.

Arc by Three Points

Ribbon: Home, Draw – Draw – Arc > 3-Point

Menu: Draw – Arc > 3 points

Toolbar: Draw –

Hotkeys: CTRL+ALT+A

Command line: A, ARC

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Command prompts:

Specify start point of arc or [Center]: Specify start point 1. Specify second point of arc or [Center/End]: Specify second point 2. Specify end point of arc: Specify end point 3.

The direction of arc creation is determined by the specified points. You can change the direction to the opposite by holding down the CTRL key.

Arc by Center, Start and End

Ribbon: Home, Draw – Draw – Arc > Center, Start, End

Menu: Draw – Arc > 3 points

Toolbar: Draw –

Command line: ARCBYCENTERSTARTEND

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Command prompts:

Specify center point of arc: Specify arc center (point 1). Specify start point of arc: Specify start point 2. Specify end point of arc: Specify end point 3.

The direction of arc creation is indicated on the screen by the mouse cursor. You can change the direction to the opposite by holding down the CTRL key.

Arc by Continue

Creates an arc tangent to the last created arc, line, or polyline object, 2D polyline or 3D polyline. The end point of previous object will be the arc start point.

Attention: For quick creation of such arcs you can also press ENTER or SPACE in response to prompt “Specify start point of arc” in the arc creation command

Ribbon: Home, Draw – Draw – Arc > Continue

Menu: Draw – Arc > Continue

Toolbar: Draw –

Command line: ARCBYCONTINUE

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Command prompts:

Specify end point of arc: Specify end point 1.

Arc by Start, Center and End

Ribbon: Home, Draw – Draw – Arc > Start, Center, End

Menu: Draw – Arc > Start, Center, End

Toolbar: Draw –

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Command prompts:

Specify start point of arc: Specify start point 1.

Specify center point of arc: Specify arc center (point 2).

Specify end point of arc: Specify end point 3.

The direction of arc creation is indicated on the screen by the mouse cursor. You can change the direction to the opposite by holding down the CTRL key.

Arc by Start, Center and Angle

Ribbon: Home, Draw – Draw – Arc > Start, Center, Angle

Menu: Draw – Arc > Start, Center, Angle

Toolbar: Draw –

Command line: ARCBYSTARTCENTERANGLE

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Command prompts:

Specify start point of arc: Specify start point 1.

Specify center point of arc: Specify arc center (point 2).

Specify included angle: Specify center angle (point 3).

The direction of arc creation is indicated on the screen by the mouse cursor. You can change the direction to the opposite by holding down the CTRL key. You can also change the direction of arc creation by setting the central angle to negative.

Arc by Start, Center and Chord Length

Ribbon: Home, Draw – Draw – Arc > Start, Center, Length

Menu: Draw – Arc > Start, Center, Length

Toolbar: Draw –

Command line: ARCBYSTARTCENTERLENGTH

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Command prompts:

Specify start point of arc: Specify start point 1. Specify center point of arc: Specify arc center (point 2). Specify length of chord: Specify chord length (point 3).

The arc is constructed from the starting point counterclockwise. If the chord length is positive, the arc covers a smaller part of the circle, if negative, it covers a larger part of the circle.

You can change the direction to the opposite by pressing the CTRL key.

Arc by Start, End and Angle

Ribbon: Home, Draw – Draw – Arc > Start, End, Angle

Menu: Draw – Arc > Start, End, Angle

Toolbar: Draw –

Command line: ARCBYSTARTENDANGLE

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Command prompts:

Specify start point of arc: Specify start point 1.

Specify end point of arc: Specify end point 2.

Specify included angle: Specify center angle (point 3).

The direction of arc creation is indicated on the screen by the mouse cursor. You can change the direction to the opposite by holding down the CTRL key. You can also change the direction of arc creation by setting the central angle to negative.

Arc by Start, End and Direction

Ribbon: Home, Draw – Draw – Arc > Start, End, Direction

Menu: Draw – Arc > Start, End, Direction

Toolbar: Draw –

Command line: ARCBYSTARTENDDIRECTION

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Command prompts:

Specify start point of arc: Specify start point 1. Specify end point of arc: Specify end point 2. Specify tangent direction for the start point of arc: Specify tangent direction (point 3).

The direction of arc creation is indicated on the screen by the mouse cursor. You can change the direction to the opposite by holding down the CTRL key.

Arc by Start, End and Radius

Ribbon: Home, Draw – Draw – Arc > Start, End, Radius

Menu: Draw – Arc > Start, End, Radius

Toolbar: Draw –

Command line: ARCBYSTARTENDRADIUS

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Command prompts:

Specify start point of arc: Specify start point 1. Specify end point of arc: Specify end point 2. Specify radius of arc: Specify arc radius (point 3).

A smaller arc is drawn counterclockwise from the start point to the end point. You can reverse the direction by holding down the CTRL key. If the radius value is negative, a larger arc is drawn.

Arc by Start, Radius and Tangent

Ribbon: Home, Draw – Draw – Arc > Start, Radius, Tangent

Menu: Draw– Arc by> Start, Radius, Tangent

Toolbar: Draw –

Command line: ARCBYSTARTRADIUSTANGENT

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Command Prompts:

Specify radius of arc: Specify the radius value (1). The value should be positive. Specify start point of arc: Specify the start point (2). specify tangent object or [?]: Specify the object to be tangent (3).

Arc by Center, Start and Angle

Ribbon: Home, Draw – Draw – Arc > Center, Start, Angle

Menu: Draw – Arc > Center, Start, Angle

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Toolbar: Draw –

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Command line: ARC2, ARCBYCENTERSTARTANGLE

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Command prompts:

Specify center point of arc: Specify arc center (point 1).

Specify start point of arc: Specify start point 2.

Specify included angle: Specify angle (point 3).

The direction of arc creation is indicated on the screen by the mouse cursor. You can change the direction to the opposite by holding down the CTRL key. You can also change the direction of arc creation by setting the central angle to negative.

Arc by Center, Start and Chord Length

Ribbon: Home, Draw – Draw – Arc > Center, Start, Length

Menu: Draw – Arc > Center, Start, Length

Toolbar: Draw –

Command line: ARCBYCENTERSTARTLENGTH

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Command prompts:

Specify center point of arc: Specify arc center (point 1).

Specify start point of arc: Specify start point 2.

Specify length of chord: Specify chord length (point 3).

The arc is constructed from the starting point counterclockwise. If the chord length is positive, the arc covers a smaller part of the circle, if negative, it covers a larger part of the circle.

You can change the direction to the opposite by pressing the CTRL key.

Arc by Center, Angles and Radius

Ribbon: Home, Draw – Draw – Arc > Center, Angles, Radius

Menu: Draw – Arc > Center, Angles, Radius

Command line: ARC3, ARCBYCENTERANGLESRADIUS

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Command prompts:

angle of arc:

angle of arc:

Toolbar: Draw –

Specify center point of arc: Specify center of arc (point 1). Specify start Specify start angle (point 2).

Specify end Specify end angle (point 3).

Specify radius of arc: Specify radius (point 4).

The arc is constructed counterclockwise from point 2 to point 3. You can change the direction to the opposite by holding down the CTRL key.

Circle

Circle by Center and Radius

Ribbon: Home, Draw – Draw – Circle > Center, Radius

Menu: Draw – Circle > Center, radius

Toolbar: Draw –

Hotkeys: CTRL+ALT+C

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Command options:

3P Circle by three points lying on the circle.

2P Circle by two points lying on the diameter.

TTR Circle by two tangents and radius.

3T Circle by three tangents.

Diameter Circle by center and diameter.

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Command prompts:

Specify center point of circle or [3P/2P/TTR]: Specify center (point 1).

Specify radius: Specify radius of circle (point 2).

Circle by Two Tangents and Radius

Ribbon: Home, Draw – Draw – Circle > Tan, Tan, Radius

Menu: Draw – Circle > Two Tangents, Radius

Toolbar: Draw –

Command line: CIRCLEBYTTR

Command prompts:

Specify a point on first tangent

object: Select a first tangent object (point 1).

Specify a point on second tangent

object: Select a second tangent object (point 2).

Specify radius: Specify radius of circle.

Circle by Center and Diameter

Ribbon: Home, Draw – Draw – Circle > Center, Diameter

Menu: Draw – Circle > Center, Diameter

Toolbar: Draw –

Command line: CIRCLEBYDIAMETER2

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Command prompts:

Specify center point of circle:

Specify center (point 1).

Specify diameter: Specify diameter (point 2).

Circle by Diameter

Ribbon: Home, Draw – Draw – Circle > 2-Point

Menu: Draw – Circle > Diameter

Toolbar: Draw –

Command line: CIRCLEBYDIAMETER, CIRCLE2

./2__page_34_Picture_1.jpeg

Command prompts:

Specify first end point for circle’s diameter:

Specify first point 1 for circle diameter

Specify second end point for circle’s diameter:

Specify end point 2 for circle diameter

Circle by Three Points

Ribbon: Home, Draw – Draw – Circle > 3-Point

Menu: Draw – Circle > 3 points

Toolbar: Draw –

./2__page_34_Picture_15.jpeg

Command line: CIRCLEBY3POINTS, CIRCLE3

./2__page_34_Picture_17.jpeg

Command prompts:

Specify first point on circle:

Specify first point.

Specify second point

Specify second point.

on circle:

Specify third point on circle:

Specify third point.

Circle by Three Tangents

Creating a circle tangent to three objects.

./2__page_35_Picture_1.jpeg

Ribbon: Home, Draw – Draw – Circle > 3 Tangents

Menu: Draw – Circle > 3 Tangents

Toolbar: Draw –

Command line: CIRCLEBYT3CL, T3CL

Command prompts:

First tangent: Specify the first object. Second tangent: Specify the second object. Third tangent: Specify the third object.

Objects can be specified in any order.

Donut

Ribbon: Home – Draw > Donut

Ribbon: Draw – Hatches and Fills > Donut

Menu: Draw – Donut

Command line: DONUT

The command allows you to create a number of donuts with the same diameter value but different center point.

A donut consists of two arc polylines that are joined end-to-end to create a circular shape. The width of the polylines is determined by the specified inside and outside diameters. If you specify an inside diameter of 0, the donut is a filled circle.

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Command options:

Specify inside diameter of donut :

Specify outside diameter of donut :

Specify center of donut or :

Specify diameter 1.

Specify diameter 2.

Specify the location of the donut based on its center point (point 3). A donut is drawn at each point specified until you press ENTER to end the command.

The command allows you to create any number of donuts having the same diameters, but different centers.

Spline

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Command line: SPL, SPLINE

A spline is a smooth curve passing through a given set of points. Example of spline usage: line breaks of objects.

Spline can be created by two methods:

Fit points

./3__page_36_Picture_15.jpeg

When creating splines using fit points, the resulting curve goes through the specified points and depends on intervals between mathematic knots of curve.

Control vertices

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When creating splines using control vertices, temporary lines are displayed between the specified points, they form control polygon that defines the spline form.

Command options:

Method Selects the method of creation [Fit/Control]

Object Converts a polyline, smoothed by the Spline and Smooth commands, to an

equivalent spline.

Close Closes a spline.

Fit tolerance

The maximum distance from a spline curve to any points defining it.

Undo Successively reverses the specified points. It is impossible to undo the specified start point.

Creating Splines by Fit Points Method

Ribbon: Main – Draw > Fit points

Menu: Draw – Spline > Fit points

Toolbar: Draw – Fit points

Command line: SPL, SPLINE – Method > Fit

./3__page_37_Figure_10.jpeg

Command prompts:

Current settings:

Method=Fit

Specify first point or [Method/Object]: Specify a start point 1.

Specify second point: Specify second point 2.

Specify next point [Fit tolerance/Undo] Specify 3, 4, 5 etc. points.

Specify next point or [Close/Fit tolerance/Undo] Press ENTER to finish specifying points.

Specify start tangent: Specify a tangent 6 for the start spline point.

Specify end tangent: Specify a tangent 7 for the end spline point.

Creating Splines by Control Vertices Method

Ribbon: Main – Draw > Control vertices

Manu: Draw – Spline > Control vertices

Toolbar: Draw – Control vertices

./3__page_38_Picture_3.jpeg

Command line: SPL, SPLINE – Method > Control

Command prompts:

Current
settings: Method=Cv
Specify
first point or
[Method/Object]:
Specify the spline start
point.
Specify second point:Specify the second point.
Specify next point or [Undo]:Specify the next point.
Specify next point or
[Close/Undo]:
Specify all next points. Press ENTER
to close the
command.

Converting Objects to Spline

Lines, polylines, spline-smoothed polylines, arcs, circles, elliptical arcs can be transformed into a spline.

Specify first point or [Method/Object]: Object Select objects to convert to splines or [?]:

Select the Object option.

Select objects.

Press ENTER to complete the command.

Ellipse

System variable PELLIPSE controls the type of newly created ellipses.

  • The variable value PELLIPSE = 0 creates a true ellipse.
  • The variable value PELLIPSE = 1 creates a 2D polyline representation of ellipse from arc segments.

Ellipse by Semi-axes

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Ribbon: Home, Draw – Draw > By Semi-axes

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Menu: Draw – Ellipse By > Semi-axes

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Toolbar: Draw –

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Command line: ELLIPSE1

The command creates an ellipse by center and radiuses.

Command options:

Rotation Relation between ellipse axes by rotation around first axis.

./3__page_39_Picture_1.jpeg

Command prompts:

Specify center point for ellipse: Specify center point for ellipse (point 1). Specify endpoint of axis: Specify first radius (point 2). Specify distance to other axis or [Rotation]: Specify second radius (point 3).

Ellipse by Axis and Semi-axis

Ribbon: Home, Draw – Draw > By Axis and Semi-axis Menu: Draw – Ellipse By > Axis and Semi-axis Toolbar: Draw –

Command line: ELLIPSE2, ELLIPSEBYDIAMETER

The command creates an ellipse by axis and semi-axis.

Command options:

Rotation Relation between ellipse axes by rotation around first axis.

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Command prompts:

Specify axis endpoint of ellipse: Specify point 1. Specify other axis endpoint of ellipse: Specify diameter of ellipse (point 2). Specify distance to other axis or [Rotation]: Specify radius of ellipse (point 3).

Elliptic Arc

Ribbon: Home, Draw – Draw > Elliptical Arc

Menu: Draw – Ellipse By > Elliptic Arc

Toolbar: Draw –

Command line: ELLIPTICARC

Command options:

Center Center of elliptic arc.

Rotation Relation between ellipse axes by rotation around the first axis

Parameter Select Parameter when specifying the start and end points of the elliptic arc to create an elliptic arc according to the parameter vector:

p(u) = c + a* cos(u) + b* sin(u), where

c – ellipse center;

a – major axis;

b - minor axis.

Inner

Inner angle of the elliptic arc; specified relative to the origin angle.

angle

Angle Switch to the arc creation mode by specified angles.

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Command prompts:

Specify axis endpoint of elliptical arc or [Center]:

Specify point 1.

Specify other axis endpoint of elliptical arc:

Specify length of ellipse axis (point 2).

Specify distance to other axis or [Rotation]:

Specify length of another axis (point 3).

Specify start angle or [Parameter]: Specify start angle (point 4).

Specify end angle or [Parameter/Inner angle]:

Specify end angle (point 5).

601

Creation of Ellipses and Elliptic Arcs with One Command

Command line: EL, ELLIPSE

Universal command allows you to create ellipses by center, minor and major axes, and create elliptic arcs.

Command options:

Arc Switches to the mode of elliptic arc creation.

Center Center of ellipse.

Rotation Creates ellipse by rotating a circle about the first axis.

Command options of the creation of elliptic arc mode:

Center Center of elliptic arc.

Rotation Relation between ellipse axes by rotation around the first axis.

Parameter Select Parameter when specifying the start and end points of the elliptic arc

to create an elliptic arc according to the parameter vector:

p(u) = c + a* cos(u) + b* sin(u), where

c – ellipse center;

a – major axis;

b – minor axis.

Inner angle Inner angle of the elliptic arc; specified relative to the origin angle.

Angle Switch to the arc creation mode by specified angles.

Creation of Isocircle and Isoarc

Creating circle and arc in the current isoplane.

In the commands for creating an ellipse, the Isocircle and Isoarc options are available only when the isometric mode is enabled: the Isometric snap type set in the Grid snap of the drafting settings.

Isocircle

    1. Enable the isometric mode.
    1. Select the command to create an ellipse.
    1. Upon the command line prompt: Specify axis endpoint of ellipse or [Arc/Center/Isocircle]: - select Isocircle.

Command prompts

Specify center of isocircle: Specify center of isocircle. Specify radius of isocircle or [Diameter] : Specify the value of semi-axis or select Diameter and specify its value.

602

Isoarc

    1. Enable the isometric mode.
    1. Select the Elliptical Arc Command.

When selecting the Arc option in the universal command in response to the command line prompt: Specify axis endpoint of ellipse or [Arc/Center/Isocircle]: select Arc

Command prompts

Specify axis endpoint of elliptical arc or [Center/Isoarc]: Select Isoarc. Specify center of isocircle: Specify the center point. Specify radius of isocircle or [Diameter]: Specify the value of semi-axis or select Diameter and specify its value. Specify start angle or [Parameter]: Specify a start angle. Specify end angle or [Parameter/Inner angle]: Specify an end angle.

Helix

Ribbon: Home, Draw – Draw > Helix

Menu: Draw – Helix

Command line: HELIX

Command creates 2D spiral or 3D spring. Helix is used to create springs, carvings, rounded stairs.

Options:

Base radius Radius of helix base.

Top radius Radius of helix top.

Axis endpoint Endpoint location of the helix axis. The axis endpoint can be located

anywhere in 3D space. The axis endpoint defines helix length and

orientation.

Turns Number of turns for helix.

Turn height Height of one complete turn within the helix.

The number of turns will automatically update accordingly when a turn height value is specified. If the number of turns for the helix has been

specified, you cannot enter a value for the turn height.

Twist Direction of helix twist: clockwise (CW) or counterclockwise (CCW).

CCW is default twist.

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Command prompts:

Specify center point of base: Specify center (1) point. Specify base radius or [Diameter]: Specify base radius (2). Click Diameter to specify base diameter. Specify top radius or [Diameter]: Specify top radius. Click Diameter to specify top diameter. Specify helix height or Specify the height of helix (4).

Add Selected

Ribbon: Draw – Draw > Add Selected

Toolbar: Draw – Add Selected

Command line: ADDSELECTED

The command can also be opened from the context menu.

[Axis_endpoint/Turns/turn_Height/tWist]

The command creates a new object using type and properties of a selected object.

A new object of the type and properties (color, layer, line type and etc.) of selected object is created, but the command prompt to specify its geometric properties (length, radius, center point of circle and etc.) is shown.

To create an object using a selected object:

    1. Select an object.
    1. Start the Add selected command.
    1. Create an object according to the command prompts.

Prompts in the command line depend on selected object type.

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