How to bisect a selection with GIMP?
How can I cut a rectangular selection exactly in half, so that a 128-pixel long selection becomes 64 pixels long?
I have this:
I want to select just the top half of this box (so I can bucket fill it with brown), then select just the bottom half and bucket fill it with green.
The end result should be a box that is split perfectly between two colors.
Bucket-fill the whole selection with the colour you want left in the bottom half, then:
- pick the Rectangle Select tool again, click on the centre of the existing selection (to re-activate the tool on that same selection);
- in the Tool Options dialogue Size field (y-dimension), append "/2" to the value currently displayed there (meaning divide by 2), and click on the centre of the selection again - the selection should change to just the upper half;
- bucket-fill the new selection.