An opening, as in the deck of a ship, in the roof or floor of a building, or in an aircraft. c. A hatchway. hatching - WordReference English dictionary, questions, discussion and forums. By varying the spacing and width (pressure) of the lines you can make areas darker or lighter. The resulting repeat characteristics for a full range of hatch rotation angles is shown in Figure 3.. Whilst Dimter et al. The cover for such an opening. Hatch marks can probably be traced to hatching in art works, where the pattern of the hatch marks represents a unique tone or hue. When lines are placed at an angle to one another, it is called cross-hatching. Different patterns indicate different tones. Meaning of hatching. The parallel hatching would be a nice detail to narrow dating if you had already ascertained that the manuscript’s imagery originated with the fifteenth-century scribe. With parallel hatching, your lines should remain straight and run vertically or horizontally. All selected objects are checked for intersections with any of these lines; any intersections cause the hatch lines to be turned on and off as governed by the hatching style. A floodgate. The marks are parallel to each other in a evenly-spaced manner. Until we know that’s so, or not so, the parallel hatching could have come with the original imagery: it’s a common enough technique elsewhere. The process of hatching consists of expanding each line in the pattern definition to its infinite family of parallel lines. Idiom: down the hatch Slang Drink up. Indeed, it is easy to find examples from the 1430’s, and also the one from the 1420’s that you didn’t like. hatch (draw, cut, or engrave lines, usually parallel, on metal, wood, or paper) Context examples The results of a study have enabled researchers to better understand the role of eggshells in embryo development and hatching . hatch 1 (hăch) n. 1. a. All Free. Use your non-photo blue pencil to add a few parallel lines before you start to help prevent your lines from drifting to a new angle across the hatched area. A door that opens upward on the rear of an automobile; a hatchback. cites 67° as being the optimum as it takes 18 layers repeat within 10° this observation changes if the assumption that a raster pattern of alternating vectors is used. The post that I linked says “By 1440 the parallel hatching technique had spread across the region of Florence, in present-day Italy”, meaning that this was the result of an earlier evolution. Hatching. Learn more. When you add basic hatching to your drawing, you'll use this skill to draw parallel lines over the area you wish to shade. What does hatching mean? Unit and value marks. cross-hatching definition: 1. two groups of parallel lines that are drawn close together across each other, especially at an…. Unit-and-value hatch marks are short vertical line segments which mark distances. 3. 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