GIMP tools - BDA

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Guides 18 – you can choose the type of guides. In the No guides drop-down list you can
choose the following guides:
a) No guides b) Centre lines c) Rule of thirds d) Golden section
Auto Shrink shrinks the selection to the nearest rectangular shape available on the
image layer.
Ellipse Select Tool
This tool is similar to the Rectangular Select Tool in terms of its usage, options and
qualities. It should be mentioned that it does not have the Rounded corners option.
After you select the tool, the mouse pointer turns into .
You can create a selection using certain modifier keys:
– Pressing the Shift key after starting your selection and holding it down until you
are finished constrains the selection to be a circle.
– If you press the Shift key before starting to make the selection, the resulting
selection will be added to the existing selection:
18 The rule of thirds. An image is divided into vertical and horizontal one-thirds, and the element is
positioned in the intersection of those one-thirds. The key element is oriented in one of the four
points, and the background element in one of the remaining three.
The golden section. Also known as Fi or the divine proportion, it is the number equal to 1.618. The
golden section is based on Euclid's postulate on the division of a segment into equal parts so that
the ratio between the longer part and the shorter part is equal to the ratio between the entire
segment and the longer part.