Introduction
Learning to use a CAD system is similar to learning a new language. It is necessary to
begin with the basic alphabet and learn how to use it correctly and effectively through
practice. This will require learning some new concepts and skills as well as learning a
different vocabulary. Today, the majority of the Mechanical CAD systems are capable of
creating three-dimensional solid models. Nonetheless, all CAD systems create designs
using basic geometric entities and many of the constructions used in technical designs are
based upon two-dimensional planar geometry. The method and number of operations that
are required to accomplish the basic planar constructions are different from one system to
another.
In order to become effective and efficient in using a CAD system, we must learn to create
geometric entities quickly and accurately. In learning to use a CAD system, lines and
circles are the first two, and perhaps the most important two, geometric entities that one
should master the skills of creating and modifying. Straight lines and circles are used in
almost all technical designs. In examining the different types of planar geometric entities,
the importance of lines and circles becomes obvious. Triangles and polygons are planar
figures bounded by straight lines. Ellipses and splines can be constructed by connecting
arcs with different radii. As one gains some experience in creating lines and circles,
similar procedures can be applied to create other geometric entities. In this chapter, the
different ways of creating lines and circles in AutoCAD
User interaction
Help system
AutoCAD 2014 software includes enhancements to the AutoCAD Help system.
New search filters enable you to narrow your search results based on the type of user. For example, if
you choose User, you can filter on commands and system variables. If you choose Developer, your filters
include AutoLISP®, ActiveX, DXF
TM
, and .Net. The Administrator option includes Installing, Migrating,
Customizing, and Administrating. You can choose All Content to filter on any combination of content.
*
Free products and services are subject to the terms and conditions of the end-user license and
services agreement that accompanies them.
Command line
The command line interface is enhanced in AutoCAD 2014 to provide smarter, more efficient access to
commands and system variables. And you can use the command line to find other content such as hatch
patterns, visual styles, and Internet help.
AutoCorrect
The command line in AutoCAD 2014 supports AutoCorrect. If you mistype a command, instead of
responding with “Unknown command,” AutoCAD autocorrects to the most relevant and valid AutoCAD
command. For example, if you accidently type TABEL, the TABLE command is automatically launched.
AutoComplete
AutoComplete command entry is enhanced in AutoCAD 2014 to support mid‐string search. For example,
if you type SETTING on the command line, the suggestion list displays commands containing the word
SETTING anywhere within it, not just at the beginning.
Adaptive suggestions
Commands in the suggestion list are initially displayed in the order of their usage based on general
customer data. As you continue to use AutoCAD 2014, the order of commands in the suggestion list will
adapt to your own usage habits. The command usage data is stored in the profile and adapts to each
user.
Synonym suggestions
The command line has a built in synonym list. Enter a word at the command line and it will return a
command if a match is found in the synonym list. For example, if you enter Symbol, AutoCAD finds the
INSERT command so you can insert a block. Or if you enter Round, AutoCAD finds the FILLET command
so you can add a fillet to a corner.
Internet search
In AutoCAD 2014, you can quickly search for more information on a command or system variable in the
suggestion list. Move the cursor over the command or system variable in the list and choose the Help or
Internet icons to search for relevant information. The term AutoCAD is automatically prepended to the
current term for searching the Internet.
Content
In AutoCAD 2014, you can use the command line to access layers, blocks, hatch patterns/gradients, text
styles, dimension styles, and visual styles. For example, if you enter Door at the command line and the
current drawing has a block definition with the name Door, you can quickly insert it right from the
suggestion list.
Categories
To make the suggestion list easier to navigate, system variables and other content are organized into
expandable categories. You can expand a category to see the results or press the Tab key to cycle
through each category.
Input settings
You can customize the behavior of the command line using controls in the Input Settings menu when
you right‐click on the command line. In addition to the previous options to enable AutoComplete and
search for system variables, you can enable AutoCorrect, Search Content, and Mid‐string Search. All of
these options are turned on by default.
File tabs
The AutoCAD 2014 release offers drawing tabs as a fast and visual way to switch between open
drawings or to create new ones. You can turn the file tabs bar on or off using the File Tabs control on the
View ribbon tab. When file tabs are turned on, a tab for each open drawing is displayed at the top of the
drawing area.
Layer management
The number of layers displayed on the ribbon has been increased. Layers are now displayed using
natural ordered sort. For example, the layer names 1, 4, 25, 6, 21, 2, 10 are sorted as 1, 2, 4, 6, 10, 21, 25
instead of 1, 10, 2, 25, 21, 4, 6.
A new Merge option in the Layer Manager enables you to select one or more layers from the layer list
and merge the objects from those layers onto a different layer. The original layers are automatically
purged from the drawing.
Xref enhancements
The display of linetypes and layersfrom externally referenced drawingsis enhanced in AutoCAD 2014. Xref
linetypes are not displayed in the linetype list of the ribbon or Properties palette. Xref layers are still
displayed in the ribbon so you can control their visibility but they are not displayed in the Properties palette.
You can easily change the attachment type for an xref between Attach and Overlay by double‐clicking in
the Type column. A new option in the right‐click menu enables you to change the xref type for multiple
selected xrefs at the same time.
Reality capture
Reality Capture enables you to take a 3D laserscan of an object, topography, a building, or even an entire
town and attach it to an AutoCAD drawing as point cloud data. You can then use it as a real‐world reference
for your design work. This point cloud data isstored asthousands, even millions, of points in 3D space.
Autodesk ReCap
Autodesk® ReCap software is a separate application that enables you to create a point cloud project file
(RCP) that references multiple indexed scan files (RCS). It is installed with AutoCAD 2014 by default and
you can launch it from the Windows Start menu or from the Autodesk ReCap desktop icon.
Documentation
Geographic location
Support for geographic locations has been significantly enhanced in AutoCAD 2014. It includes the same
Coordinate System Library as Autodesk® AutoCAD® Map 3D software and the Live Map Data tool.
There are many benefits to defining a location in your drawing. When you import geolocated data into a
geolocated drawing, AutoCAD transforms the data based on the drawing's geographic location. You can
see your design within the context of its location and if you render the model, it will have the correct
sun angle. If you export the drawing to a map service like Google® Earth, it will automatically display at
the correct location. When you insert georeferenced images or blocks into your georeferenced drawing,
they are automatically placed in the correct location and at the correct scale. For example, imagine large
projects that have multiple designers working separately on the same design, such as a housing project.
If each designer uses the same coordinate system, all the drawings will insert at their appropriate
locations when combined into a single file. You can mark specific point of interest in your drawings,
knowing that those points correspond to logical geographic locations. And, if you have a GPS device
enabled on your computer, you can see your current position in the drawing and you can even mark
positions as you walk around. For example, landscape architects can visit the site and take notes about
the surroundings by marking them on the drawing.
Drawing enhancements
AutoCAD 2014 includes a variety of drawing enhancements to help you produce drawings more efficiently.
Arcs
Easily draw an arc in either direction by holding the Ctrl key to switch directions as you draw.
Polylines
The #11 AUGI wishlist request for the ability to fillet a polyline to itself, creating a closed polyline, is
implemented in AutoCAD 2014.
Sheet sets
When creating a new sheet in a sheet set, the CreateDate field stored in the associated template (.dwt)
displays the creation date of the new sheet rather than the creation date of the template file.
Plot styles
The CONVERTPSTYLES command enables you to convert the current drawing to either named or color‐
dependent plot styles. In AutoCAD 2014 it is enhanced to support style names with spaces.
Annotation enhancements
Attributes
The default behavior for inserting blocks with attributes displays the dialog box. ATTDIA is set to 1.
Text
Single line text is enhanced to maintain the last justification setting until it’s changed.
Dimensions
The new DIMCONTINUEMODE system variable provides you with more control when creating continued
and baseline dimensions. When DIMCONTINUEMODE is set to 0, the DIMCONTINUE and DIMBASELINE
commands create dimensions based on the current dimension style. When set to 1, they apply the
dimension style of the selected dimension.
Hatch
The Hatch tool on the ribbon maintains the previous method for selecting objects to hatch: Pick internal
point or Select objects. The Undo option is added to the command line.
Connection
In AutoCAD 2014 the Online ribbon tab is renamed Autodesk 360. It includes a new Manage Documents
tool for easy access to the Autodesk® 360 folder on your local machine and the new Design Feed
enables you to enter posts and images for a drawing that can be shared online.
Design Feed
Design Feed, accessible from the Autodesk 360 ribbon tab, displays a palette in which you can enter text
messages and attach images to be shared online with colleagues, clients, and consultants through
Autodesk 360. Posts appear with related drawings on the desktop, on the web, and across mobile
devices. Turn on Design Feed from the Autodesk 360 ribbon tab.
Operating systems
AutoCAD 2014 supports Windows® 8, Windows 7, and Windows XP. If you are using a Windows 8 touch‐
enabled device, you can benefit from smoother pan and zoom performance. A new control on the
System tab of the Options dialog box displays a touch mode ribbon panel when a touch screen device is detected.
Exchange apps
A default installation of AutoCAD 2014 adds several valuable apps from Autodesk Exchange, including
the Featured Apps ribbon tab, the Exchange App Manager, and the SketchUp Import for AutoCAD 2014
tool.
The Featured Apps ribbon tab provides easy access to the Exchange site where you can browse and
download AutoCAD apps; some for free and some for purchase. It also includes a selection of featured
apps that you can select and download directly from the Featured Apps tab without browsing through
the entire Exchange site.
Secureload
AutoCAD 2014 offers new security controls to help protect your drawings from unauthorized or
malicious execution of files such as scripts, AutoLISP, and VBA applications within AutoCAD.
Learning to use a CAD system is similar to learning a new language. It is necessary to
begin with the basic alphabet and learn how to use it correctly and effectively through
practice. This will require learning some new concepts and skills as well as learning a
different vocabulary. Today, the majority of the Mechanical CAD systems are capable of
creating three-dimensional solid models. Nonetheless, all CAD systems create designs
using basic geometric entities and many of the constructions used in technical designs are
based upon two-dimensional planar geometry. The method and number of operations that
are required to accomplish the basic planar constructions are different from one system to
another.
In order to become effective and efficient in using a CAD system, we must learn to create
geometric entities quickly and accurately. In learning to use a CAD system, lines and
circles are the first two, and perhaps the most important two, geometric entities that one
should master the skills of creating and modifying. Straight lines and circles are used in
almost all technical designs. In examining the different types of planar geometric entities,
the importance of lines and circles becomes obvious. Triangles and polygons are planar
figures bounded by straight lines. Ellipses and splines can be constructed by connecting
arcs with different radii. As one gains some experience in creating lines and circles,
similar procedures can be applied to create other geometric entities. In this chapter, the
different ways of creating lines and circles in AutoCAD
User interaction
Help system
AutoCAD 2014 software includes enhancements to the AutoCAD Help system.
New search filters enable you to narrow your search results based on the type of user. For example, if
you choose User, you can filter on commands and system variables. If you choose Developer, your filters
include AutoLISP®, ActiveX, DXF
TM
, and .Net. The Administrator option includes Installing, Migrating,
Customizing, and Administrating. You can choose All Content to filter on any combination of content.
*
Free products and services are subject to the terms and conditions of the end-user license and
services agreement that accompanies them.
Command line
The command line interface is enhanced in AutoCAD 2014 to provide smarter, more efficient access to
commands and system variables. And you can use the command line to find other content such as hatch
patterns, visual styles, and Internet help.
AutoCorrect
The command line in AutoCAD 2014 supports AutoCorrect. If you mistype a command, instead of
responding with “Unknown command,” AutoCAD autocorrects to the most relevant and valid AutoCAD
command. For example, if you accidently type TABEL, the TABLE command is automatically launched.
AutoComplete
AutoComplete command entry is enhanced in AutoCAD 2014 to support mid‐string search. For example,
if you type SETTING on the command line, the suggestion list displays commands containing the word
SETTING anywhere within it, not just at the beginning.
Adaptive suggestions
Commands in the suggestion list are initially displayed in the order of their usage based on general
customer data. As you continue to use AutoCAD 2014, the order of commands in the suggestion list will
adapt to your own usage habits. The command usage data is stored in the profile and adapts to each
user.
Synonym suggestions
The command line has a built in synonym list. Enter a word at the command line and it will return a
command if a match is found in the synonym list. For example, if you enter Symbol, AutoCAD finds the
INSERT command so you can insert a block. Or if you enter Round, AutoCAD finds the FILLET command
so you can add a fillet to a corner.
Internet search
In AutoCAD 2014, you can quickly search for more information on a command or system variable in the
suggestion list. Move the cursor over the command or system variable in the list and choose the Help or
Internet icons to search for relevant information. The term AutoCAD is automatically prepended to the
current term for searching the Internet.
Content
In AutoCAD 2014, you can use the command line to access layers, blocks, hatch patterns/gradients, text
styles, dimension styles, and visual styles. For example, if you enter Door at the command line and the
current drawing has a block definition with the name Door, you can quickly insert it right from the
suggestion list.
Categories
To make the suggestion list easier to navigate, system variables and other content are organized into
expandable categories. You can expand a category to see the results or press the Tab key to cycle
through each category.
Input settings
You can customize the behavior of the command line using controls in the Input Settings menu when
you right‐click on the command line. In addition to the previous options to enable AutoComplete and
search for system variables, you can enable AutoCorrect, Search Content, and Mid‐string Search. All of
these options are turned on by default.
File tabs
The AutoCAD 2014 release offers drawing tabs as a fast and visual way to switch between open
drawings or to create new ones. You can turn the file tabs bar on or off using the File Tabs control on the
View ribbon tab. When file tabs are turned on, a tab for each open drawing is displayed at the top of the
drawing area.
Layer management
The number of layers displayed on the ribbon has been increased. Layers are now displayed using
natural ordered sort. For example, the layer names 1, 4, 25, 6, 21, 2, 10 are sorted as 1, 2, 4, 6, 10, 21, 25
instead of 1, 10, 2, 25, 21, 4, 6.
A new Merge option in the Layer Manager enables you to select one or more layers from the layer list
and merge the objects from those layers onto a different layer. The original layers are automatically
purged from the drawing.
Xref enhancements
The display of linetypes and layersfrom externally referenced drawingsis enhanced in AutoCAD 2014. Xref
linetypes are not displayed in the linetype list of the ribbon or Properties palette. Xref layers are still
displayed in the ribbon so you can control their visibility but they are not displayed in the Properties palette.
You can easily change the attachment type for an xref between Attach and Overlay by double‐clicking in
the Type column. A new option in the right‐click menu enables you to change the xref type for multiple
selected xrefs at the same time.
Reality capture
Reality Capture enables you to take a 3D laserscan of an object, topography, a building, or even an entire
town and attach it to an AutoCAD drawing as point cloud data. You can then use it as a real‐world reference
for your design work. This point cloud data isstored asthousands, even millions, of points in 3D space.
Autodesk ReCap
Autodesk® ReCap software is a separate application that enables you to create a point cloud project file
(RCP) that references multiple indexed scan files (RCS). It is installed with AutoCAD 2014 by default and
you can launch it from the Windows Start menu or from the Autodesk ReCap desktop icon.
Documentation
Geographic location
Support for geographic locations has been significantly enhanced in AutoCAD 2014. It includes the same
Coordinate System Library as Autodesk® AutoCAD® Map 3D software and the Live Map Data tool.
There are many benefits to defining a location in your drawing. When you import geolocated data into a
geolocated drawing, AutoCAD transforms the data based on the drawing's geographic location. You can
see your design within the context of its location and if you render the model, it will have the correct
sun angle. If you export the drawing to a map service like Google® Earth, it will automatically display at
the correct location. When you insert georeferenced images or blocks into your georeferenced drawing,
they are automatically placed in the correct location and at the correct scale. For example, imagine large
projects that have multiple designers working separately on the same design, such as a housing project.
If each designer uses the same coordinate system, all the drawings will insert at their appropriate
locations when combined into a single file. You can mark specific point of interest in your drawings,
knowing that those points correspond to logical geographic locations. And, if you have a GPS device
enabled on your computer, you can see your current position in the drawing and you can even mark
positions as you walk around. For example, landscape architects can visit the site and take notes about
the surroundings by marking them on the drawing.
Drawing enhancements
AutoCAD 2014 includes a variety of drawing enhancements to help you produce drawings more efficiently.
Arcs
Easily draw an arc in either direction by holding the Ctrl key to switch directions as you draw.
Polylines
The #11 AUGI wishlist request for the ability to fillet a polyline to itself, creating a closed polyline, is
implemented in AutoCAD 2014.
Sheet sets
When creating a new sheet in a sheet set, the CreateDate field stored in the associated template (.dwt)
displays the creation date of the new sheet rather than the creation date of the template file.
Plot styles
The CONVERTPSTYLES command enables you to convert the current drawing to either named or color‐
dependent plot styles. In AutoCAD 2014 it is enhanced to support style names with spaces.
Annotation enhancements
Attributes
The default behavior for inserting blocks with attributes displays the dialog box. ATTDIA is set to 1.
Text
Single line text is enhanced to maintain the last justification setting until it’s changed.
Dimensions
The new DIMCONTINUEMODE system variable provides you with more control when creating continued
and baseline dimensions. When DIMCONTINUEMODE is set to 0, the DIMCONTINUE and DIMBASELINE
commands create dimensions based on the current dimension style. When set to 1, they apply the
dimension style of the selected dimension.
Hatch
The Hatch tool on the ribbon maintains the previous method for selecting objects to hatch: Pick internal
point or Select objects. The Undo option is added to the command line.
Connection
In AutoCAD 2014 the Online ribbon tab is renamed Autodesk 360. It includes a new Manage Documents
tool for easy access to the Autodesk® 360 folder on your local machine and the new Design Feed
enables you to enter posts and images for a drawing that can be shared online.
Design Feed
Design Feed, accessible from the Autodesk 360 ribbon tab, displays a palette in which you can enter text
messages and attach images to be shared online with colleagues, clients, and consultants through
Autodesk 360. Posts appear with related drawings on the desktop, on the web, and across mobile
devices. Turn on Design Feed from the Autodesk 360 ribbon tab.
Operating systems
AutoCAD 2014 supports Windows® 8, Windows 7, and Windows XP. If you are using a Windows 8 touch‐
enabled device, you can benefit from smoother pan and zoom performance. A new control on the
System tab of the Options dialog box displays a touch mode ribbon panel when a touch screen device is detected.
Exchange apps
A default installation of AutoCAD 2014 adds several valuable apps from Autodesk Exchange, including
the Featured Apps ribbon tab, the Exchange App Manager, and the SketchUp Import for AutoCAD 2014
tool.
The Featured Apps ribbon tab provides easy access to the Exchange site where you can browse and
download AutoCAD apps; some for free and some for purchase. It also includes a selection of featured
apps that you can select and download directly from the Featured Apps tab without browsing through
the entire Exchange site.
Secureload
AutoCAD 2014 offers new security controls to help protect your drawings from unauthorized or
malicious execution of files such as scripts, AutoLISP, and VBA applications within AutoCAD.
Autodesk, AutoCAD, Autodesk Inventor, AutoLISP, DXF, Inventor, and Revit are registered trademarks or trademarks of
Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries. All other brand names, product
names, or trademarks belong to their respective holders. Autodesk reserves the right to alter product and services
offerings, and specifications and pricing at any time without notice, and is not responsible for typographical or graphical
errors that may appear in this document.
(Nabeel Aadil Aadi )
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