Editing a right-Line 1.-
When an object is selected, it change the color of
its contour lines to color red. In this "state"
the object can be edited (modified) or moved.
The basic of
editing an object is just to change its defining points. For a line
those points are the initial and final points. When the line is
selected, the extreme points can be seen as very small protuberances
at the ends of the line.
When the cursor is over one point of the
object that can be edited it will change its shape to the select
one and the "editable" point will change to a small circle,
clearly visible, filled with color green.
In this situation the
point can be moved in two ways:
The left button of the mouse is pressed and without releasing the pressure the mouse is dragged. The point will be "glued" to the mouse cursor in its movement.
The left button of the mouse is pressed and released. If this is done, the color of the contour lines of the object will change to purple color and the point, as a red circle filled with color green, will be apparent. If this is the case, the arrow-keys of the keyboard will be "actives", and tipping any one of them will move the point in the direction of the arrow tipped.
The first possibility is
preferred for quick, not-extremely-precise movements. The second is
used when it is needed to be very precise.
Each time the
arrow-key is tipped, the displacement of the point in the direction
of the arrow-key is just one pixel of the screen, that is, 0.25 mm.
of the final drawing. If it is wanted to have a bigger movement, the
Shift-key should be pressed when tipping the arrow-keys. Then the
movement is four times bigger: 1 mm. each time. (If maintaining the
Shift and arrow keys both pressed, the movement of the point will be
continuous and quick.)
The same kind of movement explained can
be performed with the whole object. If the whole object (not "a
point of the object"!) is selected, it will have a red color. In
this state it is possible to click and drag the mouse and the whole
object will be "glued" to the mouse cursor. Alternatively,
the arrow-keys will be "actives" for the whole object and
tipping them, pressing or not the Shift-key, will produce bigger or
smaller movements in the direction of the arrow tipped.
Madrid, January 2006 |
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