external references chapter 24 - media.scc.losrios.edu · edt 310 - chapter 24 - external...

EDT 310 - Chapter 24 - External References 1

External ReferencesExternal References

Chapter 24Chapter 24

Sacramento City CollegeEDT 310


ObjectivesObjectivesDefine the function of external references.Reference an existing drawing into the current drawing using the XREFcommand.Bind external references and selected dependent objects to a drawing.Edit external references in the current drawing.


ObjectivesObjectivesUse external references to create a multi-view layout.

Control the display of layers in viewports using the Layer Properties Manager.


The XREF CommandThe XREF Command


The XREF Command The XREF Command A design firm has a team of designers.

Architect.Mechanical.Electrical.Civil.Structural.Landscape.


The XREF Command The XREF Command Each member of the team must have access to the building information and drawings that are prepared by the architect.

Building floor planSite plan.Etc.


The XREF Command The XREF Command The team could share information like this:

Architect prepares work.Architect WBLOCKS information to FIVEdiskettes and distributes the diskettes to the project team.Each team member would have a copy of the architect’s work and could INSERT the information into their own drawing files.


Architect

Landscape Civil

MechanicalElectrical

Structural

Original DistributionOriginal Distribution


The XREF Command The XREF Command Everyone is happy.Each has a copy of the architect’s work.


The XREF Command The XREF Command The architect then goes to a progress meeting with the client.

The client wants many changes made to the building floor plan.

The architect complies and makes changes to his drawing.


The XREF Command The XREF Command The architect then changes the shape of the floor plan, because project requirements change.


The XREF Command The XREF Command BUT, to give the changes to the team, the entire process must be repeated.

WBLOCK floor plan to diskette.Distribute diskette to team members.Team members delete old BLOCKSTeam members INSERT new revised BLOCKS.


Architect

Landscape Civil


Structural

Revised Distribution #1Revised Distribution #1


The XREF Command The XREF Command Everyone is once again happy.

They work on their plans using WBLOCK copies of the architect’s work.

However…


The XREF Command The XREF Command The architect once again, goes to a progress meeting with the client.

Again, changes are requested by the client.So…


The XREF Command The XREF Command A week later, the architect AGAIN changes the shape of the floor plan.The entire process must be repeated a THIRD TIME (!)

WBLOCK to diskette.Distribute diskette to team members.Team members delete old BLOCKSTeam members INSERT new revised BLOCKS.


Architect

Landscape Civil


Structural



The XREF Command The XREF Command Clearly, an easier method must be foundto distribute information to team members.

The XREF ability of AutoCAD is the “easier” method.


The XREF Command The XREF Command You can reference, one or more existing drawings into the current drawing without adding them to the contents of the current file.


The XREF Command The XREF Command XREFs are not added to the current drawing.

The drawing is just displayed on screen.The architect’s MOST CURRENT version can be displayed on EVERYONE’s screen !

This makes for Much smaller files.Increased accuracy (information is latest).


The XREF Command The XREF Command The XREF is “linked” or “attached” to your master file.

The linked information is NOT part of your drawing.

You just see the information as a “picture” or “link”.


The XREF Command The XREF Command Several people can reference the same drawing file.

Mechanical engineerElectrical engineerCivil engineer.

Any revisions to the referenced drawing will be displayed in any drawing where it is used.


The XREF Command The XREF Command Think of an XREF as just a “picture”being displayed behind your current drawing.


Architect

Landscape Civil


Structural

Original DistributionOriginal Distribution

Master file for Electrical

Master file for Landscape Master

file for Structural

Master file for Civil

Master file for Mechanical

The XREF’d Architectural file


Architect

Landscape Civil


Structural




file for Structural





Benefits of External ReferencesBenefits of External References


Benefits of External ReferencesBenefits of External ReferencesThe “Master Drawing” is the drawing to which that you have attached XREF files.

The “Master Drawing” is YOUR drawing.The “XREF Drawing is your teammate’s dwg.

Remember YOU are the MASTER of your own fate. (Master drawing belongs to you).


Benefits of External ReferencesBenefits of External References1. Whenever the Master Drawing is opened, the latest versions of the attached XREF’ed files are displayed.

You see your teammate’s latest revisions.


Benefits of External ReferencesBenefits of External References2. XREF’s are automatically updated

AutoCAD reloads each XREF whenever the Master Drawing is loaded.AutoCAD updates each XREF before plotting the Master Drawing.


Benefits of External ReferencesBenefits of External References3. You can also “Force an XREF update”at any time.

Architect makes changes.Calls teammatesTeammates do a RELOAD of the XREF file.Teammates see the latest changes !


Benefits of External ReferencesBenefits of External References4. XREFS can be nested.

“A picture inside a picture.”

Master File

1


Benefits of External ReferencesBenefits of External References5. You can use as many XREFS as needed for any drawing.

A detail referenced to the Master Drawing can be composed of smaller details that are themselves XREFS.

Detail 1

Master Drawing

File

1

2

3Detail Library on File Server


Benefits of External ReferencesBenefits of External References5. You can use as many XREFS as needed for any drawing.

ONE CORRECT copy is stored on the server.Avoids duplication of details that could be wrong.

Detail 1

Master Drawing

File

1

2

3Detail Library on File Server


Benefits of External ReferencesBenefits of External References6. Multiple XREFS can be attached to your drawing.

Master Drawing

File123

Mechanical Sheet

Civil Sheet

Architectural Sheet


Benefits of External ReferencesBenefits of External ReferencesAll referenced drawings can be set to update automatically when your masterdrawing when it is opened.


The XREF CommandThe XREF Command


The XREF Command The XREF Command To access the XREF command:

Pick the External Reference button from either the Reference or Insert toolbar



Pick Xref Manager... from the Insert pull-down menu



Enter XREF or XR at the Command: prompt.

This displays the Xref Manager dialog box.


Attaching an External Reference to Attaching an External Reference to the Current Drawingthe Current Drawing


Attaching an External ReferenceAttaching an External ReferenceThe XREF command functions very similar to the INSERT command.

A Referenced Drawing that is “XREF’d”into the current drawing is said to be “attached”.


Attaching an External ReferenceAttaching an External ReferenceEnter the XREF command from

The INSERT pull-down menu.Typing “XREF” or “XR” at the Command: prompt.Selecting the “External Reference” button on the INSERT toolbar.


Attaching an External ReferenceAttaching an External ReferenceTo attach the reference to the current drawing,

Enter the XREF command


Attaching an External ReferenceAttaching an External ReferencePick the Attach... button in the XrefManager dialog box.


Attaching an External ReferenceAttaching an External ReferenceThe Select Reference File dialog box is displayed.


Attaching an External ReferenceAttaching an External ReferenceSelect the desired drawing file to attach. Pick Open.


Attaching an External ReferenceAttaching an External ReferenceXREF screen is similar to INSERT.


Attaching an External ReferenceAttaching an External ReferenceXREF screen differences to INSERT.


Attaching an External ReferenceAttaching an External ReferenceThe External Reference dialog box is displayed


Attaching an External ReferenceAttaching an External ReferenceThis dialog box is used to indicate how and where the reference is to be placed in the current drawing.


Attaching an External ReferenceAttaching an External ReferenceThe name and path of the currently selected XREF are shown in the upper-left comer of the dialog box.Use Browse... to change the drawing to be attached


Attaching an External ReferenceAttaching an External ReferenceSet the insertion point, scaling, and rotation angle.


Attaching an External ReferenceAttaching an External ReferenceClick the “Retain Path” check box.This saves the file path with the Master Drawing.


File Locations of External File Locations of External ReferencesReferences


Attaching an External ReferenceAttaching an External ReferenceWhen the path is not included, AutoCAD searches

Support File Search PathProject Files Search Path


Attaching an External ReferenceAttaching an External ReferenceSpecify the Support File Search Path in the Files tab of the Options dialog box.


Project Files Search PathProject Files Search PathAutoCAD searches for XREF files in all paths of the current project name.


Project Files Search PathProject Files Search PathProject Files Search Path are listed in the Files Options dialog box.


Project Files Search PathProject Files Search PathCreate a new project as follows:

1. Pick Project Files Search Path to highlight it, and then pick the Add... button.2. Enter a project name if desired.3. Pick the plus sign icon (+), and then pick the word “Empty”.4. Pick the Browse... button and locate the folder that is to become part of the project search path. 5. Pick OK.


XREFXREF’’s s Compared with INSERTCompared with INSERT


XREFXREF’’s vs s vs InsertInsertXREF’s are similar to INSERT as far as

Rotation.Insertion Point.Scaling.


XREFXREF’’s vs s vs InsertInsertXREF files are different from INSERT

XREF’ed filesAre NOT ADDED the current drawing file.

INSERT’ed filesAre ADDED to the current drawing file.

XREF’s Can be automatically updated.

INSERT’ed CANNOT be automatically updated.


XREFXREF’’s vs s vs InsertInsertXREF files are different from INSERT

XREF’s Show the most current information.

INSERT’edMay NOT show the most current information.

XREF’sONE COPY of the original exists.

INSERT’edMULTIPLE copies of original file exist.


Overlaying the Current Drawing Overlaying the Current Drawing with an External Referencewith an External Reference


Overlaying With XREFOverlaying With XREFOverlaying

Allows you to temporarily view the xref without attaching it.


Overlaying With XREFOverlaying With XREFTo overlay:

Activate the Overlay option button in the External Reference dialog box after selecting an XREF.


NestedNested XREFXREF’’ss and Overlayand Overlay


Overlaying Overlaying vsvs Attaching XREFAttaching XREFNested XREFs

Are handled differently between overlay and attaching.

Nesting occurs when an externally referenced file is referenced by an xref file that has been attached to the current drawing.

Parent XREFs are XREF files that are attached.


Overlaying Overlaying vsvs Attaching XREFAttaching XREFWhen an XREF is overlaid,

Nested XREFS that it contains are displayed if the XREFS were attached, but not if they were overlaid.

In other words, any nested overlays are not carried into the master drawing with the parent xref.


Detaching, Reloading, UnloadingDetaching, Reloading, Unloading


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingWhen a Master Drawing is opened

The XREF is also loaded The XREF appears on screen.

This attachment remains permanent until you remove or detach it.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingTo remove or detach:

Highlight the reference name in the XREF Manager dialog box.Pick the Detach button.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingWhen detached:

All instances of the XREF are erased.All referenced data is removed from the current drawing.All XREFS nested within the detached file are also removed.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingThe actual detachment does not occur until you press OK and close the dialog box!

This is helpful if you accidentally detach an xref,You can simply press Cancel to prevent the detachment and return to the drawing.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingTo update or reload an xref file

Highlight the reference name in the XrefManager dialog box Pick the Reload button.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingReload

Forces AutoCAD to read and display the most recently saved version of the XREF’eddrawing.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingUnload

Is a temporary removal of an XREF.The XREF is NOT actually detached.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingUnload

Highlight the reference name Pick the Unload button.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingWhen an XREF is unloaded, it is not

Displayed or Regenerated.

AutoCAD's performance is increased.


Detaching, Reloading, UnloadingDetaching, Reloading, UnloadingTo display the XREF again:

Access the Xref Manager dialog box Pick the Reload button.


The The XrefXref Manager Dialog BoxManager Dialog Box


The The XrefXref Manager Dialog BoxManager Dialog BoxUse the Xref Manager dialog box to access current information about any referenced file in the Master drawing.


The The XrefXref Manager Dialog BoxManager Dialog BoxFile names:

Display in list view or tree view. The list view display mode is the default.


The The XrefXref Manager Dialog BoxManager Dialog BoxReference Name.

This column lists the names of all existing external references.


The The XrefXref Manager Dialog BoxManager Dialog BoxStatus.

This column describes the current status of each xref.


The The XrefXref Manager Dialog BoxManager Dialog BoxThe XREF status:

Loaded. The xref is attached to the drawing.Unloaded. XREF not displayed or regenerated.


The The XrefXref Manager Dialog BoxManager Dialog BoxThe XREF status:

Unreferenced. The XREF has nested XREFS that are not found or are unresolved.An unreferenced XREF is not displayed.Not Found. The xref file was not found in valid search paths.Unresolved. The xref file is missing or cannot be found.


The The XrefXref Manager Dialog BoxManager Dialog BoxOrphaned. The parent of the nested xref was unloaded or cannot be found.Reload. The XREF is marked to be reloaded. Loading and unloading both occur after the dialog box is closed.Unload. The XREF is marked to be unloaded.


The The XrefXref Manager Dialog BoxManager Dialog BoxSize.

The file size for each XREF is listed in this column.


The The XrefXref Manager Dialog BoxManager Dialog BoxType.

This column indicates whether the XREF was attached or referenced as an overlay.


The The XrefXref Manager Dialog BoxManager Dialog BoxDate.

The last modification date for the file being referenced is indicated in this column.


The The XrefXref Manager Dialog BoxManager Dialog BoxSaved Path.

Lists the path name saved with the XREF.If only a file name appears here, the path has not been saved.


The The XrefXref Manager Dialog BoxManager Dialog BoxThe column widths can be adjusted.

To show a listing of externally referenced files that shows nesting levels:

Pick the Tree View button OR

Press the [F4] key.


The The XrefXref Manager Dialog BoxManager Dialog BoxIn the tree view display mode:

The drawing is indicated with the standard AutoCAD 2000 drawing file icon.XREFS appear as a sheet of paper with a paper clip.


Tree View Display ModeTree View Display ModeIn the tree view display mode:

Nesting levels are shown in a format that is similar to the arrangement of folders.


Tree View Display ModeTree View Display ModeThe XREF icon can take on different appearances, depending on the current status of the xref.


XREF icon XREF icon Unloaded = is grayed out.


XREF icon XREF icon A question mark = the file was not found.


XREF icon XREF icon An upward arrow = the xref has just been reloaded


XREF icon XREF icon A downward arrow = the xref has just been unloaded.


Updating the XREF PathUpdating the XREF Path


Updating the XREF PathUpdating the XREF PathIf an XREF file is not found in the Saved Path location when the master drawing is opened, AutoCAD searches

The library path.The current drawing folder.The Support File Search Path locations set in the Files tab of the Options dialog box.


Updating the XREF PathUpdating the XREF Path


Updating the XREF PathUpdating the XREF PathTo update the Saved Path location, pick the Save Path button.


Updating the XREF PathUpdating the XREF PathWhen a referenced drawing cannot be found, AutoCAD lists its status is indicated as Not Found.


Updating the XREF PathUpdating the XREF PathUpdate the path to refer to the new location of the XREF by:

Selecting the Browse... button in the XrefFound At area.


Updating the XREF PathUpdating the XREF PathGo to the new folder Select the desired file.


Updating the XREF PathUpdating the XREF PathPress Open to update the path.


Updating theUpdating the XrefXref PathPathPick OK.

The XREF is automatically re-loaded into the drawing.


Binding an External ReferenceBinding an External Reference


Binding an External ReferenceBinding an External ReferenceAn externally referenced file can be made a permanent part of the Master Drawing.

The result is the same as if it had been inserted with the INSERT command.

This is called binding an XREF.


Binding an External ReferenceBinding an External ReferenceUse binding when you need to send the full drawing file on disk to a plotting service, or to a client.

BINDING an XREF = INSERT


Binding an External ReferenceBinding an External ReferenceWhen an XREF is bound,

Objects are renamedBlocksDimension stylesLayersLinetypesText styles

By AutoCAD.


Binding an External ReferenceBinding an External ReferenceWhen an XREF is attached,

Dependent objects in the XREF are renamed.XREF name precedes the actual object name.The names are separated by a vertical bar symbol (|).


Binding an External ReferenceBinding an External ReferenceExample:

File named TITLE has layer named NOTES.

TITLE

NOTES


Master Drawing

Binding an External ReferenceBinding an External ReferenceWhen attached as an XREF

Title comes into the Master Drawing as Title l Notes.

TITLE

TITLE|NOTES


Binding an External ReferenceBinding an External ReferenceThe vertical bar distinguishes the

XREF-dependent layer name from the Same layer name in the Master drawing.

Master Drawing Layer List would be:NotesTITLE|NOTES


Binding an External ReferenceBinding an External ReferenceWhen an XREF file is bound,

The dependent objects are renamed AGAINThis shows that they have become a permanent part of the drawing.

There are different renaming methods, depending on the type of binding that is performed.


Binding an External ReferenceBinding an External ReferenceTo bind an XREF using the XrefManager dialog box:

Highlight the XREF to bind Select the Bind... button. The Bind Xrefs dialog box is displayed.


Binding an External ReferenceBinding an External ReferenceThe Insert option brings the XREF into the drawing as if you had used the INSERT command.

All instances of the XREF are converted to normal block objects.

The drawing is entered into the block definition table.


Binding an External ReferenceBinding an External ReferenceAll named objects such as

LayersBlocks, and Styles

are incorporated into the Master drawing as named in the XREF.


Binding an External ReferenceBinding an External ReferenceExampleAn XREF named PLATE is bound

It contains a layer named OBJECTThe xref-dependent layer PLATE | OBJECT becomes the locally defined layer OBJECT. All other XREF-dependent objects are stripped of the XREF name.They assume the properties of the locally defined objects with the same name.


Binding an External ReferenceBinding an External ReferenceThe Insert binding option

Provides the best results for most purposes

The Insert binding option is commonly used

When you need to send the ENTIRE file to a client or plotting service.


Binding an External ReferenceBinding an External ReferenceThe Bind option

Brings the XREF in as a native part of the Master drawing.Converts all instances of the XREF to blocks.The XREF name is kept with the names of all dependent objects.The vertical line in each of the names is replaced with two dollar signs with a number in between.


Binding an External ReferenceBinding an External ReferenceExample:

A layer named Title l Notes is renamed to Title$0$Notes when the xref is bound using the Bind option.

The number inside the dollar signs is automatically incremented if a local object definition with the same name exists.


Binding an External ReferenceBinding an External ReferenceIf Title$O$Notes already exists in the drawing.The layer is renamed to:

Title $ 1 $ Notes.Unique names are created for all xref-dependent object definitions that are bound. Rename objects as desired using the RENAME command.


Clipping an External ReferenceClipping an External Reference


Clipping an External ReferenceClipping an External ReferenceFrequently, you need to display only a specific portion of an XREF.

AutoCAD allows you to create a boundary that displays a subregion of an external reference.


Clipping an External ReferenceClipping an External ReferenceWhen clipped

All geometry occurring outside the boundary is invisible.Objects that are partially within the subregionappear to be trimmed at the boundary.

Although these objects appear trimmed, the referenced file is not changed in any way.


Clipping an External ReferenceClipping an External ReferenceClipping is applied to selected instances of an xref, and not to the actual xrefdefinition.


The XCLIP Command The XCLIP Command


The XCLIP CommandThe XCLIP CommandUse XCLIP command

To create and modify clipping boundaries.

Access the XCLIP command by:Pick the External Reference Clip button from the Reference toolbar

ORPick Xref from the Clip cascading menu in the Modify pull-down menu

OREnter XC or XCLIP at the Command: prompt.


The XCLIP CommandThe XCLIP CommandCommand: XC or XCLIPSelect objects: (select any number of xrefobjects)Select objects: Enter clipping option[ON/OFF/Clipdepth/Delete/generatePolyline/New boundary] <New>:


The XCLIP CommandThe XCLIP CommandSelect as many objects as required at the “Select objects:” prompt

The New boundary option is the default.

New boundary allows you to select the clipping boundary.


The XCLIP CommandThe XCLIP CommandOther options of the XCLIP command:

*ON and OFF.*Clipdepth.*Delete.*generate Polyline.


The XCLIP CommandThe XCLIP Command*ON and OFF.

The clipping feature can be turned on or off as needed by using these options.

*Clipdepth.This option allows a front and back clipping plane to be defined. The front and back clipping planes define what portion of a 3D drawing is displayed.


The XCLIP CommandThe XCLIP Command**Delete.

Use to remove a clipping boundary completely, use this option.

*Generate Polyline.Use to create a polyline object to represent the clipping border of the selected xref.


The XCLIP CommandThe XCLIP CommandAfter the New boundary option is selected, the XCLIP command sequence continues as follows:

Specify clipping boundary:[Select polyline/Polygonal/Rectangularl<Rectangular>: (press [Enter] to create a rectangular boundary)Specify first corner: (pick the first corner)Specify opposite corner: (pick the other corner)


The XCLIP CommandThe XCLIP CommandThe geometry outside of the clipping boundary is no longer displayed after the command is completed.


The XCLIP CommandThe XCLIP CommandA clipped xref

Can be edited just like an unclipped xref.

The clipping boundary moves with thexref.

Nested xrefs are clipped according to the clipping boundary for the parentxref.


The XCLIP CommandThe XCLIP CommandTwo other options for defining a boundary.

Select polyline. Polygonal.


The XCLIP CommandThe XCLIP CommandSelect polyline.

This option allows you to select an existing polyline object as a boundary definition.The border is composed only of straight line segmentsAny arc segments in the selected polyline are treated as straight line segments.If the polyline is not closed, the start and end points of the boundary are connected.


The XCLIP CommandThe XCLIP CommandPolygonal.

This option allows an irregular polygon to be drawn as a boundary.Is similar to the WPolygon selection optionAllows a fairly flexible boundary definition.


The XCLIP CommandThe XCLIP CommandThe clipping boundary is invisible by default.

Display the boundary by setting the XCLIPFRAME = 1.


Spatial and Layer Indexes Spatial and Layer Indexes


The XCLIP CommandThe XCLIP CommandSpatial and layer indexes are lists that organize objects by their location in 3D space and their layer name.If a drawing will be used as an external reference, save the file with spatial and layer indexes.


The XCLIP CommandThe XCLIP CommandSpatial and layer indexes help improve the performance of AutoCAD when referencing drawings with frozen layers and dipping boundaries.Layers that are frozen are not loadedwhen demand loading is enabledAny areas outside clipping boundariesare also not loaded.


The XCLIP CommandThe XCLIP CommandCreate spatial and layer indexes using the Save Drawing As dialog box.

1. Pick the Options... button, and make sure the DWG Options tab is active in the Saveas Options dialog box.

2.In the 1-ndex type: drop-down list, pick the type of index required. The default option is None.


The XCLIP CommandThe XCLIP Command2. In the Index type: drop-down list, pick the type of index required.

The default option is None.

3.Pick OK, and then save the drawing.


Demand LoadingDemand Loading


Demand LoadingDemand LoadingDemand loading controls how much of an external reference file is loaded when it is attached to the master drawing.

When demand loading is enabled, the only portion of the xref file loaded is the part necessary to regenerate the master drawing.This improves performance and saves disk space.


Demand LoadingDemand LoadingAny data on frozen layers, as well as any data outside of clipping regions, is not loaded.

Demand loading is enabled by default.


Demand LoadingDemand LoadingChange Demand Loading under Tools Options.

Select the Open and Save tab.


Demand LoadingDemand LoadingThe three demand loading options are found in the Demand load Xrefs: drop-down list in the External References (Xrefs) area.


Demand LoadingDemand LoadingThe options are described as follows:*Enabled. *Disabled.*Enabled with copy.


Demand LoadingDemand Loading*Enabled. When this option is active, demand loading is turned on. While the drawing is being referenced, the xref file is kept open and other users cannot edit the file.


Demand LoadingDemand Loading*Disabled.Enabling this option turns off demand loading.


Demand LoadingDemand Loading*Enabled with copy. When this option is active, demand loading is turned on, and other users can edit the original drawing because AutoCAD uses a copy of the referenced drawing.


Demand LoadingDemand LoadingNOTE: Two additional settings in the Open and Save tab of the Options dialog box control the effects of changes made to xrefdependent layers and in-place reference editing. The settings are controlled by check boxes in the External References (Xrefs) area. Each option is explained as follows:


Using Using XREFs XREFs In In MultiView MultiView LayoutsLayouts


LayoutsLayouts


LayoutsLayoutsAutoCAD has two designing environments

Model space Paper space.


LayoutsLayoutsModel space is the environment in which you draw and design.

Select the Model tab to select model space.

All drawings and models should be created in model space.


LayoutsLayoutsPaper space is used to create a layout of the drawing prior to plotting.

Paper space is active when a layout tab is selected.


LayoutsLayoutsUse paper space to create a layout of several different drawings and views, each with different scales.

You can even mix 2D and 3D views in the same paper space layout.


ViewportsViewports


ViewportsViewportsImagine that the sheet of paper you are creating will contain several cutouts(viewports) through which you can seemodel space.


ViewportsViewportsObjects and designs have been created at full-size in model space.


ViewportsViewportsTo make a viewport active, double-clickinside a viewport.

Reference (insert) the drawing to be displayed.


ViewportsViewportsExample:C-size paper. 36” x 24”The first viewport is cut 12” wide and 12” high. You want to display the floor plan of a house inside the opening.


ViewportsViewportsExample:If you then place the full-size model of the floor plan directly behind the C-size paper, the house will extend many feet beyond the edges of the paper.How can you place the drawing within the viewport?


ViewportsViewportsExample:You know the floor plan should be displayed inside the viewport at a scale of 1/4" = 1'-0". The scale factor of 1/4" = 1'-0" is 48.


ViewportsViewportsExample:Therefore, you need to move the floor plan model away from the C-size paper until it is 1/48 (reciprocal of 48) the size it is now.When you do that, the entire floor plan fits inside the viewport you cut.


ViewportsViewportsThis is accomplished with the XP (times paper space) option of the ZOOM command.


Paper Space Initial Drawing SetupPaper Space Initial Drawing Setup


Initial Drawing SetupInitial Drawing Setup1. Place a border and title block on the screen. Open or insert a predrawn standard border and title block template.


Initial Drawing SetupInitial Drawing SetupThe Architectural, English units template drawing is a D-size sheet.It contains one viewport, which shows as a thin line just inside the left border line.Erase this viewport before creating a new one.


Initial Drawing SetupInitial Drawing SetupFinish remainder of chapter 24.

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