User guide

Manipulating Images 89
Modifying a selection
Once you've used a selection tool to select a region on the active layer, you can
carry out a number of additional steps to fine-tune the selection before you
actually apply an effect or manipulation to the selected pixels.
Transforming the selection
The Selection Deform Tool on the
Tools toolbar's Deform Tools flyout lets you
transform, scale or rotate any already drawn
selection area. With the tool enabled, square
nodes on the mid-points and corners of any
selected area can be dragged (opposite).
Look for the cursor changing between resize
and rotate modes when hovering over a node.
Use in conjunction with the Ctrl key to transform the selection area without
constraint, creating a skewed transform (drag nodes as appropriate). The Alt
key resizes the area about its center, while the Shift key maintains the area’s
aspect ratio. It’s also possible to move the small center of rotation "handle" in the
center of the transform to produce an arc rotational movement rather than
rotating around the area’s center (by default).
Holding down the Shift key whilst rotating will cause a movement
in 15 degree intervals.