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# 2.2.8.7 Modifying Draw Elements

Draw elements have blue handles that show how they can be modified. They also have text entry boxes that allow precise entry of parameters. These values become active when a Tab is entered, or the cursor is moved out of the text box.

There is a context menu accessed via Right-Click for Draw Objects that can change the edit mode from the initial "Points Mode" to "Origin Mode" where Click sets the position of the drawn object's origin - which will cause subsequent rotations using Section 2.2.8 or Section 2.2.13 to be centered about that point.

The context menu can be used to go back to Points Mode, or to set the origin to one of a number of defined points. There are text shortcuts - "o" for Origin Mode and "p" for Points Mode.

In Origin Mode, the context menu allows the origin to be set to be -

  Absolute (shortcut "0") with the origin at the layout origin or
  Relative by dragging the origin to a point, or snapping to the position of the first 4 corner points (shortcut "1" through "4"), or to the middle/centroid of the shape (shortcut "m"). For a Polygon or Polyline the Relative origin can be snapped to a last selected node (shortcut "l").

In Points Mode,

  Lines have end points that can be dragged. Shift-Drag will snap the end to the end of a nearby Draw object, while Ctrl+Drag will snap to any point on a nearby Draw object. They have text entry boxes for length and angle.

  Curves have end points that work like Lines but also have a middle anchor that can be used to alter the curve radius. They have text box entry for Arc Length (in degrees) and Radius.

  Boxes have anchors for all corners and the middle of all sides. They have text entry boxes for width and height.

  Bezier Lines - see Section 2.2.8.9

- 2.2.8.7.1 Modifying PolyLines and Polygons