Learning AutoCAD 2010, Volume 1 phần 5 pptx

Lesson: Selecting Objects in the Drawing ■ 171 Practice Exercise: Other Selection Options In this practice exercise, you use selection options that include Last, Previous, All, and Remove. First, you begin by drawing several lines and circles as shown. 1. Draw some lines and circles. 2. Practice using the Last selection option: ■ Begin the Erase command. ■ At the Select object prompt, enter L and press ENTER. ■ Notice that the last object drawn is highlighted. ■ Press ENTER to execute the command. Note that your last object drawn may be different than the one shown above. 3. Copy one or several objects in your drawing, placing them randomly as shown below. 4. Repeat the copy command and try the Previous select object option: ■ Begin the Copy command. ■ At the Select object prompt, enter P and press ENTER. ■ Notice the previous selection you made is selected again. ■ Press ESC to escape the Copy command. 172 ■ Chapter 3: Manipulating Objects 5. Practice selecting all objects, then remove an object from the selection set: ■ Begin the Erase command. ■ At the Select object prompt, enter ALL and press ENTER (only once). ■ Notice all the objects are highlighted. ■ Hold down the SHIFT key and select a single item from the selection set. ■ Notice that it is no longer highlighted. ■ Press ENTER to complete the Erase command. Note that you can enter R and ENTER to remove the objects from the selection set. Enter A to add objects into the selection set. Lesson: Selecting Objects in the Drawing ■ 173 Exercise: Select Objects In this exercise, you use selection methods to erase objects in the drawing. You will be able to use these same methods to create selection sets in other drawings. The completed exercise Completing the Exercise To complete the exercise, follow the steps in this book or in the onscreen exercise. In the onscreen list of chapters and exercises, click Chapter 3: Manipulating Objects. Click Exercise: Select Objects. 1. Open M_Selecting-Objects.dwg. 2. Zoom into the area shown in the following image. 3. Erase using the Implied Window selection option, then remove selected objects from the selection set: ■ Begin the Erase command. ■ Click near point (1), then near point (2), as indicated in the following image. The selected geometry is highlighted. Only the objects that were completely enclosed by the window should be included in the selection set. 4. To remove objects from the selection set: ■ Press SHIFT+select to select the three lines indicated in the following image. This removes them from the selection set. ■ Press ENTER to complete the erase command. 174 ■ Chapter 3: Manipulating Objects 5. To erase using an implied crossing window: ■ Start the Erase command. ■ Click near point (1), then near point (2) as indicated in the following image. Notice that you are now clicking from right to left. All of the objects that the selection window crosses are highlighted. ■ Press ENTER to complete the Erase command. 6. In another part of the drawing (zoom in if necessary), erase selected objects using the Crossing Polygon selection option: ■ Begin the Erase command. ■ At the Select objects prompt, enter CP. Press ENTER. ■ Click the points for the crossing polygon following the illustration below. ■ Begin with (1) and follow the points consecutively until you get to (6) and press ENTER. ■ All of the objects that the polygon window has crossed are highlighted. ■ Press ENTER to complete the Erase command. 7. This time erase using the Window Polygon selection option: ■ Start the Erase command. ■ At the Select objects prompt, enter WP. Press ENTER. ■ Click the points for the window polygon following the illustration below. ■ Begin with (1) and follow the points consecutively until you get to (8). Press ENTER. ■ Only the objects that are completely within the polygon window are highlighted. ■ Press ENTER to complete the Erase command. 8. Now practice selecting objects with the Fence selection option. Zoom if necessary to the part of the drawing shown below: ■ Begin the Erase command ■ At the Select objects prompt, enter F. Press ENTER. ■ Click in the drawing as indicated in the illustration below, beginning with (1). ■ When you reach point (7), press ENTER to complete the selection set. ■ Press ENTER to execute the Erase command. Lesson: Selecting Objects in the Drawing ■ 175 9. Use the Last selection option to erase the last object made in this drawing: ■ Zoom to the part of the drawing illustrated below. ■ Begin the Erase command. ■ At the Select object prompt, enter L. Press ENTER. ■ Notice that the arrow to the left is highlighted. This was the last object created when this drawing was completed. ■ Press ENTER to finish the erase command. 10. View the entire drawing and erase all: ■ At the Command line, enter Z and press ENTER. ■ Enter E and press ENTER. You should now be viewing the extents of the drawing. ■ Start the Erase command. ■ At the Select objects prompt, enter ALL. Press ENTER. ■ Everything visible in the drawing will be highlighted. ■ Press ENTER to start the command. ■ At the Command line, enter U . Press ENTER to undo. 11. Close all files. Do not save. 176 ■ Chapter 3: Manipulating Objects Lesson: Changing an Object's Position This lesson describes how to use the Move command to reposition objects in the drawing and how to move an object using grips. Moving objects is a common procedure for changing the position of objects in your drawing. The Move command enables you to move objects to different locations in the drawing using a variety of placement techniques. Objectives After completing this lesson, you will be able to: ■ Use grips or the Move command to move objects using object snaps, coordinate entry, and object snap tracking. Lesson: Changing an Object's Position ■ 177 Moving Objects The Move command enables you to reposition an object in the drawing by selecting a base point, where the object is moving from, followed by a point to define where the object is moving to. You can select the two points or use the Displacement option of the command. If you use the Displacement option, the coordinate values you enter specify a relative distance and direction from the basepoint you selected. Another option is to use grips to reposition an object. You select a grip and then activate the Move command and select a position to move the selected grip and the object to. Command Access Move Command Line: MOVE, M Ribbon: Home tab > Modify Panel > Move Menu Bar: Modify > Move Shortcut Menu: Select objects then right-click anywhere in the drawing window and click Move. 178 ■ Chapter 3: Manipulating Objects Procedure: Moving Objects with the Move Command The following steps provide an overview for moving objects in the drawing with the Move command. 1. On the ribbon, click Home tab > Modify panel > Move. 2. Select the objects to move and press ENTER to end the object selection. 3. Specify a base point (where the objects are moving from). 4. Specify a second point (where the objects are moving to). The object is moved to the new point. Lesson: Changing an Object's Position ■ 179 Procedure: Moving Objects Using Grips The following steps provide an overview of using grips to move objects. 1. Select an object to activate its grips. 2. Click a grip to activate grip edit mode. By default, this point will also be used as the base point for the move. 3. Right-click anywhere in the drawing. Click Move. 4. Click to position the object in a new location. Guidelines Follow these guidelines when using the Move command: ■ When you specify the base point for the move, it should be on or near the object being moved unless you are using other objects to define a reference vector for the move. ■ By default, the option for Noun-Verb selection is turned on in the software; this enables you to select the objects to move prior to starting the Move command. 180 ■ Chapter 3: Manipulating Objects Practice Exercise: Move Objects In this practice exercise, you draw two rectangles (of any size) then move one of them so that it is one unit to the right of the other rectangle offset from its midpoint. You use two different techniques to move this object. 1. Begin a new, blank drawing using the acad.dwt template. 2. To set up the drawing drafting settings: ■ Polar tracking and object snap should be on. ■ Object snap Midpoint mode should be selected. 3. Draw two rectangles any size in the drawing window. 4. To move the rectangle: ■ On the Home tab, click Modify Panel > Move. ■ Select the rectangle on the right and press ENTER. ■ At the prompt to specify the basepoint, click the midpoint as indicated below. 5. Move the rectangle to the midpoint of the other rectangle as indicated in the following illustration: 6. Now, move the rectangle again using grips: ■ With the command line blank, select the rectangle. ■ Select a grip on the rectangle and right- click. ■ On the shortcut menu, click Copy. ■ Select the midpoint on the rectangle as indicated below: ■ Select a grip on the rectangle again. ■ Right-click and click Move. [...]... midpoints intersect Adjust your view to include this area of the drawing 11 To relocate the water closet towards the other wall: s With the Command line blank, select the water closet s Select the grip and drag it upwards s Enter 650 and press ENTER 18 4 s Chapter 3: Manipulating Objects 12 Zoom to display your entire drawing 13 Close all files Do not save Exercise: Move Objects (Imperial Units) You... point (1) , the new angle would have been 18 0 5 Specify the reference angle by selecting the following points on the angle of reference: s Click the lower left corner endpoint (1) s Click the endpoint at (2) for the second point (any point along that line will work) s To specify the new angle, enter 0, or press ENTER to accept the default Lesson: Changing the Angle of an Object's Position s 2 01 Exercise:... the objects to copy prior to starting the Copy command Lesson: Creating New Objects from Existing Objects s 19 1 Practice Exercise: Copy Objects In this practice exercise, you use the Copy command and the object grips First, draw a circle and a line, as shown on the left in the following image 1 2 19 2 To set up the drawing: s Draw the circle (any size) s Draw the line near the circle (any length) Copy... following image to position the copies s Press ENTER to exit the Copy command 10 To place the copy of the geometry: s Select the center of one of the circles in the view as the base point s Verify that Ortho or Polar Tracking mode is turned on s Drag the cursor to the right and enter 50 Press ENTER s Press ENTER to exit the Copy command 11 Close all files Do not save 8 Pan or zoom the view to see a side view... to the right until the polar direction is 0 degrees Enter 1 and press ENTER Lesson: Changing an Object's Position s 18 1 Exercise: Move Objects In this exercise you use the Move command to move objects in the drawing When you've finished, you will be able to move objects in other drawings using object snaps, object tracking, and coordinate entry 1 2 Open M_Moving-Objects.dwg Zoom into the lower left corner... These options Lesson: Creating New Objects from Existing Objects s 18 9 copy geometry to the clipboard, as in other standard Windows applications, making the geometry available to Paste in other drawings Procedure: Copying Objects with the Copy Command The following steps describe an overview for copying objects in the drawing 1 2 3 4 19 0 On the ribbon, click Home tab > Modify panel > Copy Select the... ENTER Specify a base point for the copy Specify a second point or displacement s Chapter 3: Manipulating Objects 5 Continue to specify second points to create additional copies Procedure: Copying Objects Using Grips The following steps give an overview of using grips to copy objects 1 2 3 4 5 Select an object to activate its grips Click a grip to activate grip edit mode By default, this point will also... the sink to the new position, as shown Lesson: Changing an Object's Position s 18 5 6 s Chapter 3: Manipulating Objects 7 Repeat the Move command and select the desk and chair: s Repeat the Move command s Click to create a selection window around the desk and chair as indicated below s Press ENTER to end the selection set 8 18 6 Use the Move command to relocate the couch to the interior of the room as... image 5 Continue selecting the center points of the remaining circles in the top view as shown in the following image Press ENTER to end the Copy command The completed exercise Completing the Exercise To complete the exercise, follow the steps in this book or in the onscreen exercise In the onscreen list of chapters and exercises, click Chapter 3: Manipulating Objects Click Exercise: Copy Objects 1 2 19 4... 10 Move the dinette set to the interior of the room as shown: s With the command line blank, select the dinette set s Select the grip at the center s Drag the dinette set towards the room s Hover over the midpoint of the first wall, then the midpoint of the adjacent wall as indicated s Drag the dinette set to the middle of the room Click when you see the tracking lines of the midpoints intersect 11 . Changing an Object's Position ■ 18 1 ■ Drag the rectangle to the right until the polar direction is 0 degrees. ■ Enter 1 and press ENTER. 18 2 ■ Chapter 3: Manipulating Objects . and press ENTER. Lesson: Changing an Object's Position ■ 18 5 12 . Zoom to display your entire drawing. 13 . Close all files. Do not save. Exercise: Move Objects. start the command. ■ At the Command line, enter U . Press ENTER to undo. 11 . Close all files. Do not save. 17 6 ■ Chapter 3: Manipulating Objects Lesson: Changing an Object's Position