Graphics Programs Reference
In-Depth Information
painted, until we release the mouse button. When the mouse button is released, the red
overlay will fill in again, this time showing the edge more accurately.
Panel 4
shows our final selection on its own layer. As you can see, we need to clean it
up — the edges are not perfect. We will be doing clean up in the next chapter when we
discuss
Layer Masks
.
In
Figure 79
, our lasso was along the edge of the pig or slightly inside the body of the pig.
In
Figure 80
, the lasso is totally outside the body of the pig. It is faster to draw the lasso
this way, but can end up with more clean up after the object is isolated as shown in
panel
2
of
Figure 80
. In the next chapter, you will see that it doesn't take much more time to
clean up the selection in
Figure 80
than it does to clean up the selection in
Figure 79
. So,
in many cases a lasso that is totally outside the object might be slightly faster to use.
In
Figure 81
, we made the same selection with the
Magnetic Lasso Tool
. This gives us
the best of the earlier techniques in one tool. This time, when we draw the Lasso around
the object, we want to stay fairly close to the edges, but it really doesn't matter if we are
slightly inside or slightly outside the object. The line will snap to the edge like a magnet
snaps to metal.
