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ENGT 122 – CAD I Chapter 5 – Editing Objects. Selection Sets Most editing commands require objects to be selected in order to perform an operation. Most.

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Presentation on theme: "ENGT 122 – CAD I Chapter 5 – Editing Objects. Selection Sets Most editing commands require objects to be selected in order to perform an operation. Most."— Presentation transcript:

1 ENGT 122 – CAD I Chapter 5 – Editing Objects

2 Selection Sets Most editing commands require objects to be selected in order to perform an operation. Most editing commands require objects to be selected in order to perform an operation. Previously we used mouse picks & bounding box selection (window and crossing). Previously we used mouse picks & bounding box selection (window and crossing). Several other key word options are available for selection. These are the most useful ones: Several other key word options are available for selection. These are the most useful ones: Last Last Previous Previous WPolygon WPolygon CPolygon CPolygon ALL ALL Fence Fence Undo

3 Selection Sets All selection options can be activated on-the-fly (in the middle of a command). All selection options can be activated on-the-fly (in the middle of a command). At selection prompt, type option name or enter first letters shown capitalized in yellow. At selection prompt, type option name or enter first letters shown capitalized in yellow. At selection prompt, enter ? to display selection options. At selection prompt, enter ? to display selection options. Last Last Previous Previous WPolygon WPolygon CPolygon CPolygon ALL ALL Fence Fence Undo

4 Selection Sets Last Last Selects the most recently drawn object displayed on the screen. Selects the most recently drawn object displayed on the screen. Only a single object can be selected by this method. Only a single object can be selected by this method. Previous Previous Selects all objects from the most recent selection set. Selects all objects from the most recent selection set.

5 DEMO 1 Open Demo1.dwg. Open Demo1.dwg. Demonstrate selection Demonstrate selection Last – create centered construction line to move bottom threaded hole. Use Last to erase construction line. Last – create centered construction line to move bottom threaded hole. Use Last to erase construction line. Previous – move bottom threaded hole to right edge of part. Use Previous to rotate hole into horizontal position. Previous – move bottom threaded hole to right edge of part. Use Previous to rotate hole into horizontal position.

6 Exercise 1 Open a new drawing file using Imperial Units. Open a new drawing file using Imperial Units. Draw the 3 objects shown in A in the order specified (1 first). Draw the 3 objects shown in A in the order specified (1 first). Use MOVE with the Last option to rearrange circle 3 as shown in B. Use MOVE with the Last option to rearrange circle 3 as shown in B. Use MOVE with window selection to rearrange circle 3 and line 1 as shown in C. Use MOVE with window selection to rearrange circle 3 and line 1 as shown in C. Use MOVE with Previous option to rearrange circle 3 and line 1 as shown in D. Use MOVE with Previous option to rearrange circle 3 and line 1 as shown in D. Save your drawing as Exerc1.dwg. Save your drawing as Exerc1.dwg.

7 Selection Sets WPolygon (window polygon) WPolygon (window polygon) Works like window selection but uses an irregular polygon. Works like window selection but uses an irregular polygon. Only selects what’s completely enclosed in polygon. Only selects what’s completely enclosed in polygon. CPolygon (crossing polygon) CPolygon (crossing polygon) Same as WPolygon, except also selects objects partially enclosed in polygon (similar to Crossing Window). Same as WPolygon, except also selects objects partially enclosed in polygon (similar to Crossing Window).

8 DEMO 2 Open Demo2.dwg. Open Demo2.dwg. Demonstrate selection Demonstrate selection WPolygon – copy entire front view without dimensions. WPolygon – copy entire front view without dimensions. CPolygon – delete all dimensions in side view. CPolygon – delete all dimensions in side view.

9 Exercise 2 If not already up, open Exerc1.dwg. It should look like A below. If not already up, open Exerc1.dwg. It should look like A below. Use MOVE with the CPolygon option to rearrange circle 3 and line 1 as shown in B. Use MOVE with the CPolygon option to rearrange circle 3 and line 1 as shown in B. Use multiple MOVEs with the WPolygon option to rearrange circle 3 and line 1 as shown in C. Use multiple MOVEs with the WPolygon option to rearrange circle 3 and line 1 as shown in C.

10 Selection Sets ALL ALL Selects all objects on “thawed” layers Selects all objects on “thawed” layers Even objects on layers with visibility turned off will be selected. Only objects on “frozen” layers will not be selected. Even objects on layers with visibility turned off will be selected. Only objects on “frozen” layers will not be selected. Fence Fence Uses an open polyline to select objects. Uses an open polyline to select objects. All objects which the polyline contacts will be selected. All objects which the polyline contacts will be selected.

11 DEMO 3 Open Demo3.dwg. Open Demo3.dwg. Demonstrate selection Demonstrate selection Fence – select and delete all dimensions around front view. Fence – select and delete all dimensions around front view.

12 Exercise 4 Create the pattern of rectangles and circle approximately as shown. Create the pattern of rectangles and circle approximately as shown. Use ERASE with the Fence option to delete only the rectangles. Use ERASE with the Fence option to delete only the rectangles.

13 Selection Sets Undo Removes the most recently selected object from the selection set. Removes the most recently selected object from the selection set. You can also unselect an item by holding [Shift] and reselecting it using single pick, window option, or crossing option. You can also unselect an item by holding [Shift] and reselecting it using single pick, window option, or crossing option. ? Displays the various selection options on the command line (just in case you forget). Displays the various selection options on the command line (just in case you forget).

14 End Lesson 19

15 Modify Commands Modify commands are used to eidt objects. They include the following list. Modify commands can be entered in 3 ways; Type the command or abbreviation. Type the command or abbreviation. Use the Modify drop down menu. Use the Modify drop down menu. Use the Modify toolbar. Use the Modify toolbar. MOVE COPY OFFSET ROTATE SCALE FILLET CHAMFER TRIM EXTEND STRETCH LENGTHEN ARRAY MIRROR BREAK MEASURE DIVIDE

16 Editing Commands COPY Creates a copy of an object. Creates a copy of an object. Identical to the MOVE command except the original object is retained. Identical to the MOVE command except the original object is retained. In 2007, creating MULTIPLE copies is the default. Use [Esc] or [Enter] to end command. In 2007, creating MULTIPLE copies is the default. Use [Esc] or [Enter] to end command.

17 DEMO 5 Open Edit Demo.dwg. Open Edit Demo.dwg. Show Copy command. Show Copy command.

18 Exercise 5 Create the blue square as shown. Create the blue square as shown. Then use the least number of commands to add the red and green squares (use object snap for precise placement on corner points). Then use the least number of COPY commands to add the red and green squares (use object snap for precise placement on corner points).

19 Editing Commands OFFSET Offsets an object perpendicular to original object by a specified distance or through a specified point. Offsets an object perpendicular to original object by a specified distance or through a specified point. Result depends on object being offset (arc, line, rectangle etc). Result depends on object being offset (arc, line, rectangle etc). Primary Options: Distance (default) - offset distance specified by offset value or point selection. Distance (default) - offset distance specified by offset value or point selection. Through - offsets through specified point. Through - offsets through specified point.

20 Editing Commands OFFSET Additional Options: Erase – Erase option allows original object to be maintained or erased. Erase – Erase option allows original object to be maintained or erased. Layer – determines whether new offset object is placed on current layer or same layer as original object. Layer – determines whether new offset object is placed on current layer or same layer as original object.

21 DEMO 6 Open Edit Demo.dwg. Open Edit Demo.dwg. Show OFFSET command with options Show OFFSET command with options

22 Exercise 6 Create the three object as shown in A. Create the three object as shown in A. Use to create the image in B. Use OFFSET to create the image in B. Estimate the proper offset distance for the concentric circles. Estimate the proper offset distance for the concentric circles. Note: the red line is offset through the center of the circle and the corner point of the rectangle. Note: the red line is offset through the center of the circle and the corner point of the rectangle.

23 Editing Commands ROTATE Rotates objects through a specified angle about a specified base point (center of rotation). Rotates objects through a specified angle about a specified base point (center of rotation). Positive angle =  ; Negative angle =  Positive angle =  ; Negative angle =  Command: ROTATE Command: ROTATE Select objects to rotate. Select objects to rotate. Select Base Point. Select Base Point. Specify rotation angle. Specify rotation angle. The REFERENCE option can be used to designate a reference line on object and rotate to an absolute angle. The REFERENCE option can be used to designate a reference line on object and rotate to an absolute angle.

24 DEMO 7 Open Edit Demo.dwg. Open Edit Demo.dwg. Show ROTATE command. Show ROTATE command. Show ROTATE command with REFERENCE option. Show ROTATE command with REFERENCE option. Show ROTATE command with COPY option. Show ROTATE command with COPY option.

25 Exercise 7 Create a 5 sided polygon and a line as shown in A. Use object snap or other means for precise placement. Create a 5 sided polygon and a line as shown in A. Use object snap or other means for precise placement. Rotate both the line and polygon 23º as shown in B. Rotate both the line and polygon 23º as shown in B. Use the REFERENCE option to rotate just the line so it aligns with the edge of the polygon as shown in C. Use the REFERENCE option to rotate just the line so it aligns with the edge of the polygon as shown in C. Use the REFERENCE option to rotate both the line & polygon to the position shown in D. Use the REFERENCE option to rotate both the line & polygon to the position shown in D.

26 Editing Commands SCALE Scales the size of an object by a specified multiplying factor about a specified point. Scales the size of an object by a specified multiplying factor about a specified point. Useful for scaling title block to fit drawing prior to plotting. Useful for scaling title block to fit drawing prior to plotting. Command: SCALE Command: SCALE Select objects to scale. Select objects to scale. Select Base Point. Select Base Point. Specify scale factor. Specify scale factor. The REFERENCE option can be used to designate a reference line on object and reduce or enlarge it to a specified length. The REFERENCE option can be used to designate a reference line on object and reduce or enlarge it to a specified length.

27 Editing Commands Example showing REFERENCE option. SCALE - Example showing REFERENCE option. After selecting base point, enter R for reference option. After selecting base point, enter R for reference option. Specify 2 points on object – you then specify the actual length you want these points to become. Specify 2 points on object – you then specify the actual length you want these points to become. Specify points Specify length of 1 rather than scale factor

28 Editing Commands IMPORTANT: All drawing objects must be created full size in AutoCAD! All drawing objects must be created full size in AutoCAD! Never use the SCALE command to reduce an object so it fits the plotted sheet! Never use the SCALE command to reduce an object so it fits the plotted sheet! Plot scaling is the correct method for fitting your full size object on an itsy-bitsy piece of paper! Plot scaling is the correct method for fitting your full size object on an itsy-bitsy piece of paper!

29 DEMO 8 Open Edit Demo.dwg. Open Edit Demo.dwg. Show SCALE command. Show SCALE command. Show SCALE command with REFERENCE option. Show SCALE command with REFERENCE option.

30 Exercise 7.5 Use polar tracking and the RECTANGLE command to create a square with a 3” diagonal as shown in red. Use polar tracking and the RECTANGLE command to create a square with a 3” diagonal as shown in red. 3” diagonal Then use object tracking and osnaps to create the inscribed circle shown in blue. Then use object tracking and osnaps to create the inscribed circle shown in blue. Use the SCALE command to double the size of both objects. Use the SCALE command to double the size of both objects. Then, use the SCALE command with the REFERENCE option to rescale only the square so the square has 2 inch sides and remains centered in the circle. Then, use the SCALE command with the REFERENCE option to rescale only the square so the square has 2 inch sides and remains centered in the circle. Finally, use the SCALE command with the REFERENCE option to rescale the circle so that it is inscribed within the square. Finally, use the SCALE command with the REFERENCE option to rescale the circle so that it is inscribed within the square. Use the DIST command to verify the height of the square. Use the DIST command to verify the height of the square.

31 End Lesson 20

32 Editing Commands FILLET Creates a tangent arc between 2 objects. Called a Fillet (interior corner) or a Round (exterior corner). Creates a tangent arc between 2 objects. Called a Fillet (interior corner) or a Round (exterior corner). Command: FILLET Command: FILLET Select 1 st object. Select 1 st object. Select 2 nd object. Select 2 nd object. Options: Radius – specify fillet radius (value retained until modified). Radius – specify fillet radius (value retained until modified). Trim – determines whether original objects are modified (trim/extend) or left intact. Trim – determines whether original objects are modified (trim/extend) or left intact. Polyline – fillets a polyline. Polyline – fillets a polyline. Multiple – allows multiple fillets Multiple – allows multiple fillets Notice the lines extend

33 Editing Commands FILLET TRIM option controls whether filleted objects remain intact or are trimmed and extended to form the fillet. TRIM option controls whether filleted objects remain intact or are trimmed and extended to form the fillet. NO TRIM - selected objects remain unaltered and a fillet is added. NO TRIM - selected objects remain unaltered and a fillet is added. TRIM – selected objects are cut or extended to form fillet. TRIM – selected objects are cut or extended to form fillet.

34 Editing Commands FILLET Works for arcs and circles as well as straight lines. Works for arcs and circles as well as straight lines. Point selection is also important for these cases. Point selection is also important for these cases. If a circle is included it remains untrimmed. If a circle is included it remains untrimmed.

35 Editing Commands FILLET Also useful for capping parallel lines. Radius is automatically calculated based on line separation and overrides the set radius value. Also useful for capping parallel lines. Radius is automatically calculated based on line separation and overrides the set radius value. Can also be used to clean up intersecting lines and create sharp corners by specifying a radius of zero. Can also be used to clean up intersecting lines and create sharp corners by specifying a radius of zero. A zero radius fillet can be made (regardless of radius setting) by depressing [Shift] during object selection. A zero radius fillet can be made (regardless of radius setting) by depressing [Shift] during object selection. Before After Radius = 0

36 DEMO 9 Open Edit Demo.dwg. Open Edit Demo.dwg. Show FILLET command. Show FILLET command. Show following options: Show following options: Radius Radius Trim Trim Radius = 0 using [Shift] Radius = 0 using [Shift] Cap parallel lines Cap parallel lines Show Polyline option Show Polyline option

37 Exercise 8 Create 4 sets of lines as shown in A. Use ortho, polar, or other means to assure they are parallel or perpenducular. Create 4 sets of lines as shown in A. Use ortho, polar, or other means to assure they are parallel or perpenducular. Then use FILLET to modify the line sets as shown in B. Then use FILLET to modify the line sets as shown in B.

38 Editing Commands CHAMFER Similar to Fillet but creates a Chamfer - an angled corner or bevel between 2 objects. Similar to Fillet but creates a Chamfer - an angled corner or bevel between 2 objects. Does not work on circles, arcs, curves or parallel lines. Does not work on circles, arcs, curves or parallel lines. May be specified by distance along each edge or distance along one edge and chamfer angle. May be specified by distance along each edge or distance along one edge and chamfer angle.

39 Editing Commands CHAMFER Command: CHAMFER Command: CHAMFER Select 1 st object. Select 1 st object. Select 2 nd object. Select 2 nd object. Options: Distances- specify chamfer distance from corner along 1 st edge. Specify chamfer distance from corner along 2 nd edge. Distances- specify chamfer distance from corner along 1 st edge. Specify chamfer distance from corner along 2 nd edge. Angle- specify chamfer distance from corner along 1st line. Then specify chamfer angle with respect to first edge. Angle- specify chamfer distance from corner along 1st line. Then specify chamfer angle with respect to first edge. Polyline- chamfers a polyline. Polyline- chamfers a polyline. Trim- determines whether objects are trimmed or left intact. Trim- determines whether objects are trimmed or left intact. Method – Determines default method (Distance or Angle). Method – Determines default method (Distance or Angle).

40 DEMO 10 Open Edit Demo.dwg. Open Edit Demo.dwg. Show CHAMFER command. Show CHAMFER command. Show the following option: Show the following option: Distances Distances Angle Angle

41 Exercise 9 Draw the red object shown in A. Draw the red object shown in A. Then use CHAMFER to modify the object as shown in B. Then use CHAMFER to modify the object as shown in B.

42 Exercise 9 - Alt Create 2 sets of lines as shown in A. Use ortho or other means to assure they are perpendicular. Create 2 sets of lines as shown in A. Use ortho or other means to assure they are perpendicular. Then use CHAMFER to modify the line sets as shown in B. Then use CHAMFER to modify the line sets as shown in B.

43 Editing Commands TRIM Cuts & removes (Trims) portion of an object that extends beyond intersection with another object (trim boundary). Cuts & removes (Trims) portion of an object that extends beyond intersection with another object (trim boundary). More than one cutting edge (trim boundary) can be selected. More than one cutting edge (trim boundary) can be selected. More than one object can be trimmed at a time. More than one object can be trimmed at a time. Command: TRIM Command: TRIM Select trim boundaries. Select trim boundaries. Select objects to trim. Select objects to trim. 1) Select trim boundary 2) Select object to trim Result Remove

44 Editing Commands TRIM Additional options: Fence – selects objects to trim using selection Fence. Fence – selects objects to trim using selection Fence. Crossing – selects objects to trim using selection crossing box. This is the default, so no need for this option. Crossing – selects objects to trim using selection crossing box. This is the default, so no need for this option. Project – only used for 3D. Project – only used for 3D. Edge – activates & deactivates implied intersections. Edge – activates & deactivates implied intersections. Erase – erases selected objects in the middle of the trim command. Erase – erases selected objects in the middle of the trim command. Undo – removes effect of most recent trim. Undo – removes effect of most recent trim.

45 Editing Commands TRIM Edge option defaults to Extend which allows implied intersection. If deactivated with NOextend, only true intersections are considered. Edge option defaults to Extend which allows implied intersection. If deactivated with NOextend, only true intersections are considered. Selection point determines which portion is trimmed. Selection point determines which portion is trimmed. More than one trim boundary or trim object may be selected. More than one trim boundary or trim object may be selected. An object may be a trim boundary and a trimmed object simultaneously. An object may be a trim boundary and a trimmed object simultaneously. 1 st pick cutting edge 2 nd pick trim edge result 1 st pick cutting edge result 1 st pick 2 cutting edges 2 nd pick 2 trim edges result 2 nd pick trim edge

46 Editing Commands TRIM Depressing [Shift] while selecting the trim object extends the object to the trim boundary rather than trimming it. Discussed further during next command EXTEND. Depressing [Shift] while selecting the trim object extends the object to the trim boundary rather than trimming it. Discussed further during next command EXTEND. 1) Select trim boundary 2) Hold [Shift] & Select object to extend Result

47 DEMO 11 Create some objects. Create some objects. Show TRIM command. Show TRIM command. Show the following option: Show the following option: Multiple trim objects and trim boundaries. Multiple trim objects and trim boundaries. Show use of ALL objects as trim boundaries. Show use of ALL objects as trim boundaries. Use of [Shift] to extend line. Use of [Shift] to extend line.

48 Exercise 10 Create a circle, rectangle, and line as shown in A. Create a circle, rectangle, and line as shown in A. Then use TRIM to create the image as shown in B. Then use TRIM to create the image as shown in B. Then use TRIM again to create the image as shown in C. Then use TRIM again to create the image as shown in C. Finally, use TRIM with [Shift] to reconnect the red line. Finally, use TRIM with [Shift] to reconnect the red line.

49 Editing Commands EXTEND Opposite of TRIM. Extends or lengthens object to a specified object (extend boundary). Opposite of TRIM. Extends or lengthens object to a specified object (extend boundary). Operates in same manner as TRIM. Operates in same manner as TRIM. Depressing [Shift] while selecting the extend object trims the object rather than extending it. Depressing [Shift] while selecting the extend object trims the object rather than extending it. Command: EXTEND Command: EXTEND Select extend boundaries. Select extend boundaries. Select objects to extend. Select objects to extend.

50 Editing Commands EXTEND Additional options: Fence – selects objects to trim using selection Fence. Fence – selects objects to trim using selection Fence. Crossing – selects objects to trim using selection crossing box. This is the default, so no need for option. Crossing – selects objects to trim using selection crossing box. This is the default, so no need for option. Project – only used for 3D. Project – only used for 3D. Edge – activates & deactivates implied intersections. Edge – activates & deactivates implied intersections. Undo – removes effect of most recent trim. Undo – removes effect of most recent trim.

51 Editing Commands STRETCH Used to stretch, lengthen, shorten, or modify an object’s boundaries. Used to stretch, lengthen, shorten, or modify an object’s boundaries. Requires selection by Crossing Window or Crossing Polygon (CP). Requires selection by Crossing Window or Crossing Polygon (CP). Command: STRETCH Command: STRETCH Select objects. Select objects. Specify basepoint. Specify basepoint. Specify second point of displacement by pick or coordinates. Specify second point of displacement by pick or coordinates.

52 DEMO 12 Open Edit Demo.dwg. Open Edit Demo.dwg. Show STRETCH command. Show STRETCH command. Show STRETCH to lengthen centerlines. Show STRETCH to lengthen centerlines.

53 Exercise 11 Create 2 rectangles as shown in A. Create 2 rectangles as shown in A. Then use STRETCH to create the image as shown in B. Then use STRETCH to create the image as shown in B. Then use STRETCH again to create the image as shown in C. Then use STRETCH again to create the image as shown in C.

54 End Lesson 21

55 Editing Commands LENGTHEN Lengthens or shortens an open object by a specified amount. Lengthens or shortens an open object by a specified amount. Object selection point determines which end changes size. Object selection point determines which end changes size. Does not operate on closed loops. Does not operate on closed loops. Command: LENGTHEN Command: LENGTHEN Select object or specify method for lengthening. Select object or specify method for lengthening. If object is selected first, ACAD returns the length and prompts for lengthening method. If object is selected first, ACAD returns the length and prompts for lengthening method.

56 Editing Commands Lengthen Options: DElta- used to specify length change in any open object or change in included angle (+/-) of arcs. DElta- used to specify length change in any open object or change in included angle (+/-) of arcs. Percent- specify % change based on original size of 100%. Percent- specify % change based on original size of 100%. Total- specify new total length of any open objector total angle for arcs. Total can be specified by value or point selection. Total- specify new total length of any open object or total angle for arcs. Total can be specified by value or point selection. DYnamic- change length by dragging. DYnamic- change length by dragging.

57 DEMO 13 Create some objects. Create some objects. Show LENGTHEN command. Show LENGTHEN command. Options: Options: DElta DElta Percent Percent Total Total DYnamic DYnamic

58 Editing Commands ARRAY Creates multiple duplicate objects in a rectangular or circular pattern. Creates multiple duplicate objects in a rectangular or circular pattern. Command: ARRAY Command: ARRAY Brings up array dialog box. Brings up array dialog box. Circular Array Rectangular Array

59 Editing Commands ARRAY - RECTANGULAR Select items for array Select items for array Specify # of row and columns. Specify # of row and columns. Specify the row offset. Specify the row offset. Specify the column offset. Specify the column offset. Specify array angle. Specify array angle.

60 Editing Commands ARRAY - POLAR Select items for array Select items for array Specify array center point. Specify array center point. Specify method: Specify method: Total items & total fill  Total items & total fill  Total items &  between items Total items &  between items Total fill  &  between items Total fill  &  between items Specify whether items rotate. Specify whether items rotate. Specify base point or default. Specify base point or default.

61 DEMO 14 Create a rectangle. Create a rectangle. Show ARRAY command. Show ARRAY command. Options: Options: Rectangular Rectangular Polar (first create circle for guide) Polar (first create circle for guide)

62 Exercise 12 Create the following two array patterns. Create the following two array patterns.

63 Editing Commands MIRROR Creates a mirrored image of selected object. Creates a mirrored image of selected object. Original object may be erased or retained. Original object may be erased or retained. Command: MIRROR Command: MIRROR Specify mirror object. Specify mirror object. Specify mirror line by end point picks or coordinate input. Specify mirror line by end point picks or coordinate input. Specify whether original is deleted. Specify whether original is deleted.

64 DEMO 15 Create some objects. Create some objects. Show MIRROR command. Show MIRROR command.

65 Exercise 13 Create the arc and lines as in A. Create the arc and lines as in A. Then using only the MIRROR command, create the image in B. Then using only the MIRROR command, create the image in B. Figure A Figure B

66 Editing Commands BREAK Cuts an object into two parts or removes portion of object. Cuts an object into two parts or removes portion of object. Command: BREAK Command: BREAK Specify object to break. Specify object to break. Specify break method. Specify break method. Break Methods: Break Methods: 2 Point – Breaks object between 2 points and removes section between them. 2 Point – Breaks object between 2 points and removes section between them. 1 Point – Breaks object at a single point and retains both pieces. 1 Point – Breaks object at a single point and retains both pieces.

67 Editing Commands Approx. Break Methods: Command: Break Select object: select object Specify second break point or [First Approx. 2 Point - object selection point is 1 st break point, then select 2 nd break point (portion between points removed). Approx. 2 Point - object selection point is 1 st break point, then select 2 nd break point (portion between points removed). Approx. 1 Point – object selection point is break point. Approx. 1 Point – object selection point is break point. Command: Break Select object: select object Specify second break point or [First point]: pick point Object select point is break point.Object select point is 1 st break point. 2 nd break point. *Note – osnap not available during object selection.

68 Editing Commands Precise Break Methods: Command: Break Select object: select object Specify second break point or [First point]: F Specify first break point: pick point Specify second break 2 Point Break: select object, then select 1 st and 2 nd break points (portion between points removed). 2 Point Break: select object, then select 1 st and 2 nd break points (portion between points removed). 1 Point Break: select object, then select break point. 1 Point Break: select object, then select break point. Command: Break Select object: select object Specify second break point or [First point]: F Specify first break point: pick point Specify second break point: pick point Object select point. 1 st & 2 nd break points. 2 nd break point. 1 st break point. Object select point.

69 Editing Commands BREAK For circles, the break removal will be counter clockwise  from first to second selection point. For circles, the break removal will be counter clockwise  from first to second selection point. A circle cannot be broken at a single point (would form 360˚ arc which is illegal). A circle cannot be broken at a single point (would form 360˚ arc which is illegal).

70 DEMO 16 Create some lines and circles. Create some lines and circles. Show BREAK command. Show BREAK command. 1 Point 1 Point 1 Point Select 1 Point Select 2 Point 2 Point 2 Point Select 2 Point Select Circle Circle

71 Exercise 14 Create the rectangle, circle, and lines as in A. Create the rectangle, circle, and lines as in A. Use only the BREAK command to create the image in B. Use layer colors to keep track of the breaks as shown. Use only the BREAK command to create the image in B. Use layer colors to keep track of the breaks as shown. Figure A Figure B Break at quadrants Break at midpoint

72 Editing Commands MEASURE Places point entities at specified distances along an object. Places point entities at specified distances along an object. Command: MEASURE Command: MEASURE Specify object. Specify object. Specify length between points by value or point selection. Specify length between points by value or point selection. Point shape and size determined by Format > Point Style Point shape and size determined by Format > Point Style Object selection point

73 Editing Commands MEASURE Object selection point For open objects, points start For open objects, points start closest to end where object was selected. For closed polylines, points start at polyline start point. For closed polylines, points start at polyline start point. For circles, points start at snap rotation angle (typically 0  ) and precede counter clockwise. To reset snap rotation use SNAP command from command line with Rotate option. Warning: the R option won’t appear in command at 2007!) For circles, points start at snap rotation angle (typically 0  ) and precede counter clockwise. To reset snap rotation use SNAP command from command line with Rotate option. Warning: the R option won’t appear in command at 2007!)

74 Editing Commands MEASURE MEASURE is not available from a toolbar, but can be initiated from the Draw Drop Down Menu. DDMenu: Draw > Point > Measure DDMenu: Draw > Point > Measure

75 DEMO 17 Create a line and circle. Create a line and circle. Show MEASURE command. Show MEASURE command. Line Line Circle Circle Point Style Point Style

76 End Lesson 22

77 Editing Commands DIVIDE Divides an object into specified number of equal segments without breaking. Point entities indicate divisions. Divides an object into specified number of equal segments without breaking. Point entities indicate divisions. Command: DIVIDE Command: DIVIDE Specify object. Specify object. Specify number of segments. Specify number of segments. Point shape and size determined by Format > Point Style Point shape and size determined by Format > Point Style

78 Editing Commands DIVIDE For open objects, points start For open objects, points start closest to end where object was selected. For closed polylines, points start at polyline start point. For closed polylines, points start at polyline start point. For circles, points start at snap rotation angle (typically 0  ) and precede counter clockwise. To reset snap rotation use SNAP command from command line with Rotate option. Warning: the R option won’t appear in command at 2007!) For circles, points start at snap rotation angle (typically 0  ) and precede counter clockwise. To reset snap rotation use SNAP command from command line with Rotate option. Warning: the R option won’t appear in command at 2007!)

79 Editing Commands DIVIDE DIVIDE is not available from a toolbar, but can be initiated from the Draw Drop Down Menu. DDMenu: Draw > Point > Divide DDMenu: Draw > Point > Divide

80 DEMO 18 Create a line and circle. Create a line and circle. Show DIVIDE command. Show DIVIDE command. Line Line Circle Circle

81 Exercise 15 Use POLYGON to create the yellow  in A. Use POLYGON to create the yellow  in A. Use DIVIDE to divide the yellow  into 9 equal lengths. Use DIVIDE to divide the yellow  into 9 equal lengths. Use POLYGON with Edge option to create the blue  in A. Use POLYGON with Edge option to create the blue  in A. Move the blue  to location shown in B. Move the blue  to location shown in B. Use COPY to create image C. Use COPY to create image C. All locations should be exact! Use OSNAP! All locations should be exact! Use OSNAP!

82 Chapter 5 – The End!

83 RETIRED MATERIAL

84 Selection Sets Remove Remove Allows objects to be removed from the selected set. Allows objects to be removed from the selected set. Activates selection Remove Mode. Activates selection Remove Mode. Once activated, objects can be selected for removal from the set by any selection method. Once activated, objects can be selected for removal from the set by any selection method. Remove Mode remains active until the Add option is activated to add objects back to the selected set. Remove Mode remains active until the Add option is activated to add objects back to the selected set. Alternate remove method –hold Alternate remove method –hold [Shift] during object selection. Add Add Toggles back to default Add Toggles back to default Add Mode so objects can be added to selected set.

85 DEMO 3 Open Demo3.dwg. Open Demo3.dwg. Demonstrate selection Demonstrate selection Remove – select all objects surrounding hole in side view. Use Remove to remove all object lines from selection and then erase hole. Remove – select all objects surrounding hole in side view. Use Remove to remove all object lines from selection and then erase hole. Add – show use of Add to add to selection set. Add – show use of Add to add to selection set.

86 Exercise 3 Draw two concentric circles and a circumscribed square as shown in (1). Draw two concentric circles and a circumscribed square as shown in (1). Select all objects for erasure, but don’t execute yet. Select all objects for erasure, but don’t execute yet. Use Remove option to remove the square and outer circle from the selected set. Use Remove option to remove the square and outer circle from the selected set. Use the Add option to add the outer circle back to the selected set. Use the Add option to add the outer circle back to the selected set. Execute the erase command to delete both circles (3). Execute the erase command to delete both circles (3).

87 Editing Commands Copy Using Shortcut Menu: Select objects, then right click mouse to show shortcut menu. Select objects, then right click mouse to show shortcut menu. Allows copy & paste options similar to MS Windows. Allows copy & paste options similar to MS Windows. Select Copy to place copy of object in buffer. Select Copy to place copy of object in buffer. Select Paste to paste object from buffer. Select Paste to paste object from buffer. Copy with Base Point allows insertion point to be selected for better control. Copy with Base Point allows insertion point to be selected for better control.

88 DEMO 5 Open Edit Demo.dwg. Open Edit Demo.dwg. Show Copy command access from menus. Show Copy command access from menus. Demonstrate COPY command. Demonstrate COPY command. Demonstrate COPY WITH BASE shortcut menu. Demonstrate COPY WITH BASE shortcut menu.

89 Exercise 5 Create the blue square as shown. Create the blue square as shown. Use to add the red squares using the blue square as the original (use object snap for precise placement on corner points). Use COPY to add the red squares using the blue square as the original (use object snap for precise placement on corner points). Use Copy with Base Point (from shortcut menu) to create the remaining green squares. Use Copy with Base Point (from shortcut menu) to create the remaining green squares.

90 Editing Commands TRIM Edge option defaults to Extend which allows implied intersection. If deactivated with NOextend, only true intersections are considered. Edge option defaults to Extend which allows implied intersection. If deactivated with NOextend, only true intersections are considered. Selection point determines which portion is trimmed. Selection point determines which portion is trimmed. More than one trim boundary or trim object may be selected. More than one trim boundary or trim object may be selected. An object may be a trim boundary and a trimmed object simultaneously. An object may be a trim boundary and a trimmed object simultaneously.

91 Other Editing Commands Properties Command Allows properties of an object to be modified. Allows properties of an object to be modified. Command: PROPERTIES Command: PROPERTIES Brings up Properties Dialog box. Brings up Properties Dialog box. Other Methods: Other Methods: Select object and right click for shortcut menu. Select properties. Select object and right click for shortcut menu. Select properties. Toolbar menu (toggles on/off). Toolbar menu (toggles on/off).

92 DEMO 20 Show PROPERTIES command Show PROPERTIES command

93 Other Editing Commands Matching Properties Properties of objects can be transferred from object to object. Properties of objects can be transferred from object to object. Such properties include; Such properties include; Command: MATCHPROP Command: MATCHPROP Specify source object. Specify source object. Specify destination object or select Settings option to determine which properties get transferred. Specify destination object or select Settings option to determine which properties get transferred.  Color  Layer  Linetype  Linetype scale  Line weight

94 DEMO 19 Show MATCHPROP command Show MATCHPROP command To match layer properties To match layer properties To match linetype scale To match linetype scale

95 Exercise 16 Set up the following layers: Set up the following layers: Layer 1 - White - Continuous lines Layer 1 - White - Continuous lines Layer 2 - Red - Hidden lines Layer 2 - Red - Hidden lines Layer 3 - Yellow - Centerlines Layer 3 - Yellow - Centerlines Use Layer 1 to create the objects in A. Then use any form of the PROPERTIES command to individually change the properties for each object as shown in B. Finally, use the MATCHPROP command to create the image in C. Use Layer 1 to create the objects in A. Then use any form of the PROPERTIES command to individually change the properties for each object as shown in B. Finally, use the MATCHPROP command to create the image in C. Figure A Figure B Figure C


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