AutoCAD
Documentation Contents
  • Text
  • Adding Text to a Drawing 
  • Modelspace and Paperspace
  • Plotting
  • Temple Exercise (cont'd)
  • At the Finish
  •  

     
    Text
      Text usually conveys important information in drawings. Text is used for title blocks, to label parts of the drawing, to give specifications, or to make annotations

    AutoCAD provides various ways to create text. The method you use depends on the requirements of your drawing: 

    • For long, complex entries with internal fomatting, use multiline text via the MTEXT command. 
      Multiline text: 
      • fits a specified width but can extend to an indefinitelength
      • consists of any number of text lines or paragraphs that fit within a width you specify. Regardless of the number of lines, each set of paragraphs forms a single object, which you can move, rotate, erase, copy, mirror, stretch, or scale. 
      • has more editing options than line text. You can apply underlining, overlining, fonts, colour, and text height changes to individual words or phrases within a paragraph.
    • For short, simple entries that do not require internal formatting, use line text using the DTEXT or TEXT command. Line text is more convenient for labels.

    Although all newly entered text uses the current text style (see below: Working with Text Styles), which establishes the default font and format settings, you can use several other methods to customise the text appearance. You also can save collections of formatting choices under style names for later use. 

    Adding Line Text to a Drawing
     
      The Line Text command allows you to enter one or more single lines of text . Each line is treated as a separate object that you can relocate, reformat, or otherwise modify. 
     

    To create line text: 

    Go to the menubar and choose Draw > Text > Single Line Text

    Command: _dtext Justify/Style/<Start point>:

    With the mouse, indicate the insertion point for the first character. If you press ENTER, AutoCAD locates the new text immediately below the last text object you created, if any.

    Height <0>: 500 (Specify the height of the text) 

    Rotation angle <0>:

    by simply pressing , you are accepting the offered value of 0 for the text angle .AutoCAD generally offers "default" values for most requested input . The default value is shown in angle brackets on the Command Line. 

    Text:Floor Plan 

    The Text: prompt indicates that you should enter the text that you wish to appear on your drawing. An "I-beam" cursor will also appear at your specified starting point. You can enter as many lines of text as you wish, each terminated with . To stop the process, simply press ENTER twice (the second time, at the Text: prompt, effectively terminates the command). Try using the Line Text command again (just by pressing ENTER to recall the command), but this time, instead of typing the text height as a number, use the mouse pointer to pick two points on the screen that "shows" the text height that you want. In general, AutoCAD will always allow you to "point" to a distance (by picking two points) just as it also lets you type in a coordinate pair (x and y values) instead of picking a point on the screen. 

    Move cursor vertically, up to a suitable distance below the long elevation, pick a point and continue: 

    Text: Elevation A 

    Move cursor horizontally, across to a suitable distance below the other elevation and continue: 

    Text: Elevation B (double ENTER to quit command)

    Working with Text Styles When you create text, AutoCAD uses the current text style, which sets the font, size, angle, orientation, and other text characteristics. When you create text, the defaults for the current style are displayed at the prompts. You can use or modify the default STANDARD style, load another style, or create a new style. 

    New text inherits height, width factor, obliquing angle, backwards, upside-down, and vertical alignment properties from the current text style. Except for the STANDARD style, you must create any text style that you want to use. Use the Text Style dialog box to create or modify text styles. 

    If you change an existing style's font or vertical alignment, ALL text using that style is regenerated using the new font or orientation. However, for text objects, changing other text style properties, such as text height, does not change existing text. 
     

    Creating text styles To create a text style, go to the menubar and select Data > Text Style. Use the Text Style dialog box that then appears to configure a style. 
    Modifying text styles To modify a text style , bring up the Text Style dialog box, as above, select a style name from the Styles text box, and change any of the options as needed.
    Adding Multiline Text to a Drawing
      The following instructions demonstrate how text of a particular font and style can be incorporated into a drawing, with the aid of the Textstyle Dialog Box.

    Command: Change layer to TEXT 

    Refer to earlier tutorials for method of changing layers. 

    Before you add the text, define a text style based on the Times New Roman TrueType font. From the Format menu choose Text Style.

    Click New, and enter Times as the new style name. In the Font Name drop-down list choose the Times New Roman font. Click Close to continue.

    Text Tool Choose the Text tool on the Draw toolbar. 

    This command allows you to enter several lines of text inside a dialogue box . AutoCAD will prompt you (on the Command Line) to pick two points that form the opposite corners of a rectangle that defines the area in which the text is to be positioned ... the Edit MText dialog will then appear. Enter a few lines of text in the dialog box and then click OK. Notice that the text wraps automatically in the dialog box to fit within the width of the rectangle that you defined. You may notice also that if there is too much text to fit in the rectangle, then AutoCAD simply allows it to spill over the lower boundary of your rectangle. 

    Once the text is on the drawing, it is treated as a single entity by AutoCAD. 

    Specify two opposite corners of the text box.

      Specify first corner: (use mouse to pick start point, say below the previously drawn dimension lines, and centred beneath the plan) 

    Specify opposite corner or etc: (use mouse to pick opposite corner of textbox) 

    Height: 500

    The Multiline Text Editor dialog box appears (see below). Enter your text via the keyboard. 

    Command: qsave (save your work) 

     

     
    Dimensioning
      Dimensions show the geometric measurements of objects, the distances or angles between objects, or the X and Y co-ordinates of a feature. AutoCAD provides three basic types of dimensioning: 
    • linear – include horizontal, vertical, aligned, rotated, ordinate, baseline, and continued dimensions
    • radial, 
    • angular

    The figure below shows a simple example of each. 

    Angular and radial dimensioning are outside the scope of this introductory course. Typically, users create a separate layer to hold just dimension information. AutoCAD draws dimensions on the current layer. Every dimension has a dimension style associated with it, whether the default or the one you define. The style controls characteristics such as colour, text style, and linetype scale. Thickness information is not supported. 

    You use the DIM command to access dimensioning mode. 
     

    Parts of a Dimension Refer to the figure below. 

    • A dimension line is a line that indicates the direction and extent of a dimension. For angular dimensioning, the dimension line is an arc.
    • Extension lines, also called projection lines or witness lines, extend from the feature being dimensioned to the dimension line itself. 
    • Arrowheads are added to each end of the dimension line. 
    • Dimension text is a text string that usually indicates the actual measurement. 
    • A leader is a solid line leading from some annotation to the referenced feature.
    Linear Dimensions Linear dimensions can be: 
    • horizontal,
    • vertical, 
    • aligned – with the dimension line parallel to the line along which the extension line origins lie., or 
    • rotated

    In all four illustrations, above, the extension line origins are designated explicitly (1 & 2 respectively); the dimension line location is shown at 3. 

    As you create linear dimensions, you can modify the text, the angle of the text, or the angle of the dimension line. You can also place text in any location using the User Defined option in the DDIM Format dialog. 
     

    (i) Horizontal and Vertical Dimensions AutoCAD automatically applies a horizontal or vertical dimension depending on the extension line origins you specify or the point where you select an object. However, you can override this as you create the dimension. As you create horizontal and vertical dimensions, you can modify the dimension line angle as well as the text content and angle. 

    To create a horizontal or vertical dimension: 

    1. From the menubar, choose Draw > Dimensioning > Linear

    OR

    From the Dimensioning toolbar, choose Dimensioning then Linear 

    2. Press  to select the object to dimension, or specify the first and second extension line origins.

    3. Specify the dimension line location to complete the dimension.
     

    (ii) Aligned Dimensions In the figure below we see an example of aligned dimensioning. The object is selected (1), and the location of the aligned dimension is specified (2). The extension lines are drawn automatically. 

    To create an aligned dimension: 

    1. From the menubar, choose Draw > Dimensioning > Aligned

    OR 

    From the Dimensioning toolbar, choose Aligned Dimension 

    2. Press  to select the object to dimension, or specify the first and second extension line origins.

    3. Edit the text content or angle. 

    4. Specify the dimension line location. 
     

    (iii) Rotated Dimensions Similarly to aligned dimensions, above, i.e., use . Use appropriate option–i.e. specify rotated option in command. See figure below for examples. 

    (iv) Baseline & Continued Dimensions Baseline dimensions are multiple dimensions measured from the same baseline (see figure below). Continued dimensions are multiple dimensions placed end to end. There must already be a linear, ordinate, or angular dimension before you create baseline or continued dimensions. 


    To create a baseline linear dimension: 

    1. From the menubar, select Draw > Dimensioning > Baseline

    OR 

    From the Dimensioning toolbar, choose Baseline Dimension 

    AutoCAD uses the origin of the base dimension's first extension line (1 in figure, above) and prompts for a second extension line origin. 

    2. Use Endpoint snap to select the end of the section (2, in figure) as the second extension line origin, or press  to select any dimension as the base dimension. 

    3. Complete command. 

    The figure below shows an example of continued dimensions. 


    To create a continued dimension: 

    1. From the menubar, select Draw > Dimensioning > Continue

    OR 

    From the Dimensioning toolbar, choose Continue Dimension

    2. Use Endpoint snap to select the end of the existing dimension as the first extension line origin. 

    3. Complete command. 
     

    Editing Dimensions Dimensions can be edited with the AutoCAD edit commands and grip editing modes. Dimensions may be stretched, trimmed, extended, made oblique, or have their text edited.
    Editing Dimension Text Once you've created a dimension, you can rotate the existing text or replace it with new text. You can move the text to a new location or back to its home position, which is the position defined by the current style. Note that in the figure below, the home position is above and centred horizontally on the dimension line. 

    To rotate dimension text: 

    1. Go to the menubar and choose Draw > Dimensioning > Align Text > Rotate

    OR 

    Go to the Dimensioning toolbar, click on the Align Dimension Text flyout, and choose Rotate

    OR 

    At the command line, enter DIMEDIT 

    2. Enter the new angle for the text. 

    3. Select the dimensions to edit. 
     

     
    Temple Exercise (cont'd)
    Resuming Session Log in, invoke Autocad and open your file saved after completing the previous exercise. On entering the open command, the Open Drawing Dialog Box will display files on your directory. You can open your file by clicking, first on the file name and then on OK. 

    If your file from last week is incomplete or requires corrections, do this work first. Then qsave

    Now make a renamed copy (call it temple2.dwg; save it on your Z drive) using saveas. Keep Ortho ON, restricting movements to vertical and horizontal. (Use F4 key) 
     


    Creating a layer: 

    The next important step will be to dimension your drawing. At present the drawing does not have a layer for dimensions. Making and setting layers can be achieved with either the layer or ddlmodes commands. The example shows the layer command. 

    Command: layer (or ddlmodes

    The Layer & Linetype Properties dialog appears. Click New. Enter dim to name the new layer. Click on dim. Click on the colour square to bring up the Colour dialog—choose a colour for yopur dimensions. Click OK to return to the Layer.. dialog. Click on Current button to make the new layer current. Click OK.

    Earlier tutorials show method of changing current layer if you are not sure how to go about it. 

     

    Drawing Scale CAD "drawings" are models of the objects they represent and, until printed, are all full size (i.e., no scaling!). The intended printed scale is still important, as it has a bearing on the sizes of dimensions and text. While a drawing may display large or small notes for purely graphic reasons, notes on architectural drawings are typically proportional to the drawing scale. Titles that are appropriate in scale to a 1:20 detail, for example, would be practically invisible on a 1:200 drawing. AutoCAD includes commands that enable the user to specify the scale and a great many other variables that govern the behaviour and appearance of text and dimensions. Some AutoCAD add-on packages like drcAuto provide facilities to facilitate the selection of text and dimension settings and styles and drawing scaling. In this tutorial the original prototype drawing used in the first tutorial (base.dwg) was set up for a 1:100 scale drawing. 

     

    Adding Dimensions AutoCAD's extensive dimensioning variables and commands, can be invoked by selection from the menubar. Dimension commands ask the user to define what is to be dimensioned and, with that definition, draw the dimension lines, compute the dimension and display the text. 

    The menubar commands require selection by, holding down the Menu (right) button, dragging the pointer across additional sub-menus and releasing the button when the final option is reached. 
     


    Dimensioning the first bay: 

    Command: Select from menubar Dimension > Linear

    First extension line origin...: end 

    of

    Pick bottom left corner of floor plan

    Second extension line origin: end 

    of

    Pick bottom of first grid line


    Dimension line location: 

    Dimension line location...:

    Pick location about 1000 below bottom line of plan 

    Dimension text = 2000 (AutoCAD will compute value) 
     


    Dimensioning successive bays: 

    Command: Select from menubar Dimension > Continue

    Selecting Continue allows a quicker procedure to operate 

    Specify a second extension line origin...: end 

    of

    Pick bottom of next grid line 

    Second ext..: end of

    Pick bottom of next grid line.

    Repeat, the above process until all bays are dimensioned (see figuire, below). 

    Specify a second extension line origin...: (to end) 


     


    Dimensioning Overall Building: 

    Command: Select from menubar Dimensioning > Linear

    Then provide an overall dimension for the length of the building, about 1000 below the grid dimension line you have just drawn. Use end of snap, as above. See figure below. Select the bottom left and right corners of the floor.

    Command: qsave (save your work) 
     


    Vertical Dimensions: 

    Using the figure below as a guide, add the other dimensions shown on that drawing. 

    The procedure for drawing vertical dimensions is the same as that used to draw horizontal dimensions. 

    Command: Select from menubar Dimensioning > Linear

    Vertical dimensions may be generated using a similar sequence of commands to that used for horizontal dimensions. You should work up the page, to provide text the right way up if read from the right hand side of the drawing. Dimensions that are wrongly positioned by AutoCAD may be re-edited with the dimtedit sub-command. It is easiest to use with Ortho set to OFF (Use F4 key): 

    Command: dimtedit

    Select dimension: Pick dimension text to edit 

    Enter text location: Click at required location 

    Command: qsave (save your work frequently) 

    You may need to move the Floor Plan title when you place your drawing border later in this tute. 
     

    Adding Text  The following instructions demonstrate how text of a particular font and style can be incorporated into a drawing, with the aid of the Textstyle Dialog Box. 

    Command: Change layer to text

    Refer to earlier tutorials for method of changing layers. 

    Select from menubar Draw > Text > Single Line Text

    Text Justify/Style...:

    Style name (or ?): ?

    Text style (*):

    Select a suitable style from the many displayed. (eg. Style 2)

    Justify/Style...: s

    Style name (or ?): style2

    Justify/Angle/:

    Pick start point below the the previously drawn dimension lines and centred beneath the plan. 

    Height: 500

    Rotation Angle<0>:

    Text: Floor Plan 

    Move cursor vertically, up to a suitable distance below the long elevation, pick a point and continue: 

    Text: Elevation A 

    Move cursor horizontally, across to a suitable distance below the other elevation and continue: 

    Text: Elevation B 

    Text: (to exit) 

    Command: qsave (save your work) 

    Completing the drawing Titles: 

    To complete a drawing it is only necessary to add drawing titles, identifying the creator, the subject and title of the drawing, date and scale. A professional office would also include other essential information such as drawing number, north point and perhaps a space to enter amendment details. Change the current layer to then enter title text. 

    You may find it is a good idea to draw the borders, as described below, before you add the drawing titles. 
     


    Borders: 

    Ready made borders are often stored as blocks, in libraries. For this project it is suggested that you draw a rectangular polyline border (Command: pline), with as the current layer, with the bottom left hand corner at -5000,-5000. 

    Dimensions of the polyline outer border to fit a 1:100 A3 page, are 42200w x 29700h. The procedure would be to ensure ORTHO is ON and then: 

    Command:pline

    From point: -5000, -5000

    Arc/Close...: @29700<90

    Arc/Close...: @42200<0

    Arc/Close...: @29700<270

    Arc/Close...: c (for close

    Refer to the figure below. 

    The inner border can be generated by offsetting (Command: offset) the outer border, by 1000. (ie. 10mm at 1:100) 

    Minor repositioning of the border can be achieved, if necessary, by using the move command. 

    Don't forget to include the drawing titles if you haven't already done so. 

    Command: qsave (save your work) 
     

    Modelspace and Paperspace
      AutoCAD has two main graphic display modes:
    • TILEMODE ON (or 1). This is the mode you have used so far. In this mode it is possible to create additional tiled or mutually exclusive viewports, to split the screen like tiles.
    • TILEMODE OFF (or 0), also referred  to as floating or  paperspace mode. In this mode you must create all viewports, but these viewports are floating, in the sense that any viewport can be overlaid on another, so that you can produce more interesting graphic arrangements.
    Modelspace Up to this point, you have worked in modelspace. Modelspace is 3- dimensional space. You can change your angle to the model and see it as a 3-dimensional object. Modelspace is the drawing environment that exists within any viewport.
    Paperspace Paperspace is a 2-dimensional environment for arranging views of your model for display or plotting

    Think of paperspace as an infinitely large sheet of paper on which you can arrange viewports that show your model. 

    As its name implies, paperspace represents the paper on which you are going to print your drawing

    NOTE: You do not have to be in paperspace in order to plot, but for the commands we are about to use you will transfer between TILEMODE ON and TILEMODE OFF in order to perform certain tasks. 

    Now, change to paperspace (TILEMODE OFF) by double-clicking the mouse arrow on the button (at the bottom of the AutoCAD window) labeled TILE (see figure below). 

      If you have completed this task, the button beside it will now be labeled PAPER (see figure below) 

    and the word TILE on the TILE button has become "dim" or grey. This indicates that you are no longer in TILEMODE. 

    Do not be alarmed that your drawing suddenly disappeared when you change to PAPER SPACE. It is now being covered by a virtual "piece of paper."   All "TILED" Viewports that you may have set through the VPORT Command will disappear
    while you are in this mode. You can return to TILEMODE when necessary by double-clicking the same button. 
     

         
    You know you are in paperspace by the icon in the lower left corner of the graphics window. The familiar UCS icon has been replaced by the one shown in the adjacent figure. 

    Think of paperspace as an opaque sheet of paper held in front of your model. You can't see the model because the paper blocks your view unless you cut openings in the paper to look through. Suppose that instead of just clipping "peep holes," you could also mount a monitor in each of the openings you cut, and each monitor is connected to a TV Camera. Each TV camera transmits an image of the model to its monitor, but each camera does not have to be positioned the same relative to the model. With each camera in a different position, each monitor would display a different view of the model. In AutoCAD, changing the camera position is accomplished by the Viewpoint (VPOINT) Command you used earlier—look for the tiled vports exercise in the tutorial exercise. 

    For the purposes of creating multiview projections, the views you want to project to the "port monitors" are those you are already know (FRONT, TOP, and RIGHT SIDE). Let's talk about how this relates to paperspace. In paperspace, you create "floating" Viewports instead of tiled Viewports. This is why you are no longer in TILEMODE or TILEMODE is OFF or 0. In other words, the viewports you create are not automatically arranged in a distinct grid pattern. 

    Floating viewports can be any size, at any position, can overlap, and can be moved around. They also can display a STATIC "snap shot" view of the model, or a DYNAMIC "editable" view of the model. These are the two modes you can use when TILEMODE is OFF or 0. In the "static" mode of paperspace, like a snap shot or photograph, you cannot edit the Paper image because it is frozen; however, you can add 2D elements such as centre lines and dimensions, like drawing on a photograph. These elements are NOT part of the photograph, but are on the surface. So think of adding elements to a drawing in the "static" mode of paper space as drawing on a transparency placed over the views. In the "dynamic" mode of paperspace the viewports display the model again and the model can be edited in any viewport. Look at the three figures below which show the STATUS BAR located at the bottom of the AutoCAD Window. These figures show the look of the last two buttons on the status bar when certain modes are active. 

    TILEMODE =1

    With TILEMODE set at 1, you are looking at the MODEL, and you can setup TILED VIEWPORTS. When TILEMODE=1 you are only see the MODEL. When TILEMODE is set to 1 the word TILE is dark (known as highlighted). 

    TILEMODE=0

    With TILEMODE set at 0, you are in PAPER SPACE and the TILE button is dim (or gray). With the word PAPER showing you are in the "Static" side of paperspace, and to see the model you must create floating Viewports through which you can view the model, but the model is like a photograph (or frozen in place) and cannot be edited. 

    To change to paperspace, double click on the word MODEL or TILE. The word PAPER will appear. 

    TILEMODE=0
     
     

    With TILEMODE set at 0 (the TILE button is dim, and the word MODEL showing in place of the word PAPER, you are now in the "dynamic" side of paperspace and the floating viewports display views of the model which can be edited. The second button from the right is a toggle between the Paper and Model side of paperspace. To change to the Model side of paperspace, double click on the word PAPER, but the TILE button must be dim. To change back to the "static" or Paper side of Paper Space double click on the word MODEL. Double click on the TILE button and see that you return to the original view of the model you just had. The MODEL button (next to TILE) also reappeared. Double click on the TILE button again, and you will be back in the "static" side of paperspace; however, you cannot see the MODEL, because you have not created floating viewports through which to see it. 

       
    Plotting
     
    Before starting to plot you should zoom out so that all of your drawing or image is contained within the screen, with some free space around it to make selection easy.

    Now, to plot the drawing: 

    From the pull-down menu, click File => Print

    or

    At the Command: prompt type plot,and on the main screen, the Print / Plot Configuration dialogue box will appear).

    When the box appears make sure that these items are selected: 

    -Under the heading Paper size and Orientation click on mm and A size paper. 

    -Click on the Rotation and Origin bar. Type 0.000 by x and0.000 by y if not already there. 

    -While in Rotation and Origin change the orientation to90degrees. 

    -Look at the box marked to Scale to Fit, and if a check appears in the box, click on it to deselect

    -Under Plotted MM=Drawing Units type 1=1

    -Under Additional Parameters click on Extents.

    -Click on the button marked Pen Assignments. When a dialog box appears, click on the row labeled 7 (for white), and then move to the Width window and change the size to .7.

    Before moving on, check these settings again. Changing some settings before others will change settings you have already made and your print will have errors.**

    -Click the Full button, then click the Preview Bar to examine the way your file will plot. 

    **To EXIT Print Preview**- Click the RIGHT mouse button on the screen and a dialogue box will appear. Drag down to EXIT and you will return to the Plot Dialogue box. 

    -If everything looks OK, then click the OK button and the print will be sent to the printer.

    At the Finish
      That's all for now. Save your drawing (if you haven't already) and then exit AutoCAD: 

    Command: end (to save and exit) 

    Remember to log off before leaving. 

     

     

    Back Home Next

     

    © 2003 3A. All rights reserved