The following terms are used in Palette Jigsaw.
The aspect ratio of an image, puzzle or screen is its width divided by its height. If the device is held so that it is wider than tall, it has an aspect ratio > 1. Browsing pictures will display pictures whose aspect ratio matches the aspect ratio of the device. Only landscape images will show up in the browse list when the device is held in landscape orientation. Similarly only portrait pictures will display when the device is in portrait orientation. After a puzzle has started to be worked, though, it may be worked in either orientation.
The smallest rectangle containing an object is its bounds.
Moving a puzzle piece or palette by touching it and sliding the finger(s) across the screen. Using a single finger moves a puzzle piece. Using two or more fingers moves a palette.
Arrangement of puzzle pieces in columns and rows
Small picture used to represent a tool
Tool used to view or select a small item
Add puzzle pieces from one palette to another palette. After a merge, all pieces from the two palettes are on only one of them.
Unoccupied space next to puzzle piece(s)
A movable rectangular area that can contain zero or more puzzle pieces.
Path that surrounds an object. The perimeter of a puzzle piece, for example, defines the piece's shape
gesture used with two fingers to zoom in or out of a palette or to merge two palettes
picture used in making the puzzle
What is affected by a tool - scope is toggles using the "Ignore Hidden Palettes when Selecting" in the preferences screen. When ON, only visible palettes are in scope (pieces are selected only from visible palettes). When OFF, all palettes are in scope (pieces are selected from all palettes).
Palette with a green felt background on which puzzle pieces are placed to solve the puzzle
A piece that exists only in the imagination of the user and the app, formed by looking at the perimeter of negative space