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Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes. These characters are characterized by being designed to be connected horizontally and/or vertically with adjacent characters, which requires proper alignment.
In addition to drawing horizontal lines, a T-square can be used with a set square to draw vertical or diagonal lines. [1] The T-square usually has a transparent edge made of plastic which should be free of nicks and cracks in order to provide smooth, straight lines. T-squares are also used in various industries, such as construction.
The most common type of T-square is a guide for drawing horizontal lines on a drawing board, and can guide a set square to draw vertical or diagonal lines. [27] Other types of T-square are used by woodworkers and glaziers for marking up sheet materials such as plywood, glass, and plasterboard. [1] [26]
It is used with the drafting board to draw horizontal lines and to align other drawing instruments. Wooden, metal, or plastic triangles with 30° and 60° angles or with two 45° angles are used to speed drawing of lines at these commonly used angles. A continuously adjustable 0–90° protractor is also in use.
In computer graphics, a line drawing algorithm is an algorithm for approximating a line segment on discrete graphical media, such as pixel-based displays and printers. On such media, line drawing requires an approximation (in nontrivial cases). Basic algorithms rasterize lines in one color.
Line art or line drawing is any image that consists of distinct straight lines or curved lines placed against a background (usually plain). Two-dimensional or three-dimensional objects are often represented through shade (darkness) or hue . Line art can use lines of different colors, although line art is usually monochromatic.
The layout usually consists of evenly spaced horizontal lines, or feints, with vertical lines drawn to indicate margins, the middle of the page, or sections of a line. Graph paper has horizontal and vertical lines evenly spaced over the entire page to create a grid of squares and is used for drafting, drawing and plotting graphs. Often every ...
Box-drawing characters; Dingbat; Tombstone, the end of proof character; Other Unicode blocks Box Drawing; Block Elements; Geometric Shapes Extended; Halfwidth and Fullwidth Forms; Miscellaneous Symbols and Arrows (Unicode block) includes more geometric shapes; Miscellaneous Symbols and Pictographs (Unicode block) includes several geometric ...