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Object Snap

Object Snap. Sacramento City College Engineering Design Technology. Objectives. Use OSNAP to create precision drawings Use object snap overrides for single point selections Set running object snap modes for continuous use

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Object Snap

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  1. Object Snap Sacramento City College Engineering Design Technology Object Snap

  2. Objectives • Use OSNAP to create precision drawings • Use object snap overrides for single point selections • Set running object snap modes for continuous use • Use Autotrack and temporary tracking modes to locate points relative to other points in a drawing. Object Snap

  3. OSNAP Object Snap

  4. OSNAP • The OSNAP feature of AutoCAD • Means object snap • It increases your drawing performance and accuracy. • Is one of the most useful tools in AutoCAD. • Refers to the ability to “snap” exactly to a specific point or place on an object. • Endpoint of line • Midpoint of line • Centerpoint of circle Object Snap

  5. Object Snap • AutoTrack • Creates and deletes construction lines automatically. Object Snap

  6. AutoSnap • OSNAP • Uses Visual cues indicates the object snap point when AutoCAD has selected an OSNAP. • Endpoint Cue • A square when the cursor is placed near the object. • Midpoint Cue • A triangle when the cursor is placed near the object. Object Snap

  7. Object Snap

  8. The Object Snap Modes • Two methods of activating object snaps • 1. Running object snaps • 2. Snap Overrides • Both display visual cues as markers Object Snap

  9. Object Snap Modes • Object snap overrides • Can be used while inside a command, however, they are not commands. • They are a “one-time” override of the OSNAP choices. • Only that OSNAP choice will be active when selecting points • They can be entered 3 ways • 1. Typing abbreviation at Command: prompt • 2. Selecting from OSNAP Toolbar • 3. Selecting from right-click menu Object Snap

  10. Setting Running Object Snaps Object Snap

  11. Setting Running Object Snaps • Running object snaps. • Are “preset” object snap modes • Selected by user in OSNAP dialog box. • The “check box” for that OSNAP is checked. • When selected, AutoCAD automatically activates them at all point selection prompts. Object Snap

  12. Setting Running Object Snaps • Set by • 1. OSNAP at Command: prompt • 2. Pick ObjectSnapSettings button from the ObjectSnap toolbar Object Snap

  13. Object Snap

  14. Object Snap Modes Object Snap

  15. Object Snap Modes • Endpoint - finds the nearest endpoint of a line, arc, elliptical arc, spline, ellipse, ray, solid or multiline. • Midpoint - finds the middle point of any object, having two endpoints, such as a line, arc, elliptical arc, spline, ellipse, ray solid, xline or multiline. Object Snap

  16. ENDPOINT Object Snap

  17. MIDPOINT Object Snap

  18. Object Snap Modes • Center - locates the center point of a radial object, including circles, arcs, ellipses, elliptical arcs, radial solids. Object Snap

  19. CENTER Object Snap

  20. Object Snap Modes • Quadrant - picks the closest of the four quadrant points that can be found on circles, arcs, elliptical arcs, ellipses, and radial solids. • Intersection - picks the closest intersection. Object Snap

  21. QUADRANT Object Snap

  22. Object Snap Modes • Extended Intersection - selects an intersection point between two objects which, if they were extended, would intersect at that point. Object Snap

  23. INTERSECTION Object Snap

  24. EXTENDEDINTERSECTION Object Snap

  25. Object Snap Modes • Apparent Intersection - selects a visual intersection between two objects that appear to intersect on the screen, but may not intersect in 3d space. • 3D application only. Object Snap

  26. Endpoint Object Snap • Endpoint Object Snap • This snap setting is often selected as a running object snap. • Override: • Type END at the prompt OR • Pick the Endpoint button on OSNAP Toolbar OR • Select Endpoint from the right-click cursor menu • Position cursor near endpoint of the object. • Prompt is a small square. Object Snap

  27. Endpoint Object Snap Object Snap

  28. Midpoint Object Snap • Midpoint Object Snap • Finds and picks the midpoint of a line, polyline, or arc. • Override: • Type MID at the prompt OR • Pick the Midpoint button on OSNAP Toolbar OR • Select Midpoint from the right- click cursor menu • Position cursor near midpoint of the object. • Prompt is a small triangle marks the midpoint where the line will snap. Object Snap

  29. Midpoint Object Snap Object Snap

  30. Center Object Snap • Center Object Snap • Snaps to the center point of a circle, doughnut, ellipse, elliptical arc or arc • Override: • Type CEN OR • Pick Center button on OSNAP Toolbar OR • Pick Center from the right-click cursor menu • Locate cursor near object whose center is to be located. • Prompt is a small circle. Object Snap

  31. Center Object Snap Object Snap

  32. Quadrant Object Snap • A quadrant is a quarter section of a circle, doughnut, ellipse, elliptical arc or arc. Object Snap

  33. Quadrant Object Snap • Quadrant Object Snap • Snaps to any of these quadrants on a circle • 0o • 90o • 180o • 270o • Move cursor near one of these locations to snap to them Object Snap

  34. Quadrant Object Snap • Quadrant Object Snap • Override: • Type QUAOR • Pick Quadrant Button on OSNAP Toolbar OR • Pick Quadrant from the right-click cursor menu • Prompt is a small ‘x’ that marks the intersection Object Snap

  35. Quadrant Object Snap Object Snap

  36. Quadrant Object Snap Object Snap

  37. Intersection Object Snap • Intersection Object Snap • Snaps to the intersection of two or more objects. • Override: • Type INTOR • Pick Intersect Button on OSNAP Toolbar OR • Pick Intersection from the right-click cursor menu • Prompt is a small ‘x’ that marks the intersection • Only appears when the cursor is close to the intersection point of the two objects Object Snap

  38. Extended Intersection Object Snap • Extended Intersection Object Snap • If the cursor is near an object but not close to an actual intersection, the SnapTip reads Extended Intersection • AutoCAD finds a projected intersection point of the two objects. • Very useful when two objects do not intersect. Object Snap

  39. Extended Intersection Object Snap • Extended Intersection Object Snap • Is only available as a snap override. • If the cursor is near an object but not close to an actual intersection, the SnapTip reads Extended Intersection Object Snap

  40. Extended Intersection Object Snap Object Snap

  41. Object Snap

  42. Intersection Object Snap Object Snap

  43. Intersection Object Snap Object Snap

  44. Apparent Intersection OSNAP • Apparent Intersection Object Snap • is the point where two objects appear to intersect based on the currently displayed view. • Three-dimensional objects that are far apart may appear to intersect on the screen. • This is a valuable option when working with 3D drawings. • Not so useful for 2D. Object Snap

  45. Perpendicular Object Snap • Perpendicular Object Snap • Allows you to draw one object perpendicular to another object • Override: • Type PER at the selection prompt • Pick Perpendicular button on OSNAP Toolbar • Pick Perpendicular from the right-click cursor menu Object Snap

  46. Object Snap

  47. Perpendicular Object Snap • Important! • Perpendicular is calculated from points picked, NOT as a relationship between objects. • Perpendicularity is measured at the point of intersection so it is possible to draw a line that is perpendicular to a circle or an arc. Object Snap

  48. Perpendicular Object Snap Object Snap

  49. Perpendicular Object Snap • A deferred perpendicular means the calculation of the perpendicular point is delayed until another point is picked. • The second end point determines the location of the entire line. Object Snap

  50. Perpendicular Object Snap Object Snap

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