Thursday, December 11, 2014

Transformation Commands

The following group of commands allows the user to select a group objects that need to be transformed in one way or other.
  • Move: The user may dictate the direction and length of a move of specified objects by indicating two points which define a vector between the objects. 
  • Copy: Similar to the move command, copy does not affect the original group of objects, with the copied objects being completely independent of the original objects.
  • Rotate: Providing a specific base point and angle, the user may rotate an object of their choosing with this command. Negative angles will provide a clockwise rotation, while a positive angle gives a counterclockwise rotation.     
  • Scale: Enlarge or shrink a selected group of objects by selecting a base point for the scaling as well as applying a factor for which to scale.    
  • Mirror: This command produces a mirror copy of a selected object group by specifying the two ends of the mirror line. Then, the mirrored objects may be deleted or kept, depending upon the user’s preference.
  • Stretch: Allows the user to move a portion of a drawing while retaining its connections to other parts of the drawing, thus stretching it out. Blocks, Hatch, patterns, and Text entities may not be stretched. 
  • Array: Produces multiple copies of selected objects that are arranged in a rectangular or circular pattern.
  • Offset: Constructs a new entity parallel to an existing one. This could be single line, polyline, arc, circle, or curve. 

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