![]() ![]() Vector mode is usually implemented on raster systems through software that illuminates specified pixels lying along a prescribed line segment. Vector mode - A vector, or stroke, mode of display used to generate line segments from pairs of specified endpoints.Real-world coordinates - Measurements expressed in the engineering units of the application.Raster scan data is what is used to control the intensity of the electron beam in the CRT monitor. Operations done on frame buffers are called raster ops. Raster - Basically, a grid of pixels that make up an image.Projection algorithm - A rule determining the angle at which visual structures are projected on a view plane.Primitives - Basic elements of a graphics display such as points, lines, curves, polygons, and alphanumeric characters.It is the smallest portion of a display that can be addressed and given a color or intensity. Pixel - An abbreviation for picture element.The more bits assigned to each pixel, the more complex the image that can be displayed. There can be more than one bit of frame buffer memory assigned to each pixel. Frame buffer - Memory that stores a full frame of picture data.The use of double buffering provides continuity and realism in animated sequences because it allows fast switching between views. One buffer stores the current display information, while the other creates the next view. Double buffering - Display memory, generally known as frame buffers, is divided in two.Moving this information to the terminal speeds response time. Display list - A list of vectors, curves, pixel states, and text that defines the graphics data to be displayed.Segment can be automatically added back to the display if the user zooms in on any particular area. ![]()
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