Line Drawing
Line Drawing is an exhibition that explores the conceptual and formal qualities of line found in a variety of media that relate to and expand upon the conventional idea of drawing. Line drawings also means Line art, a style of two-dimensional art featuring only two, unshaded, contrasting colors or a line drawing algorithm in computer graphics. A line drawing algorithm is a graphical algorithm for approximating a line segment on discrete graphical media. On discrete media, such as pixel-based displays and printers, line drawing requires such an approximation.
On continuous media, by contrast, no algorithm is necessary to draw a line. For example, oscilloscopes use natural phenomena to draw lines and curves. The goal of any line drawing algorithm is to construct the best possible approximation of an ideal line given the inherent limitations of a raster display. Following is a list of some of line qualities that are often considered.
• Continuous appearance
• Uniform thickness and brightness
• Are the pixels nearest the ideal line turned on
• How fast is the line generated
Contour means "outline", and presents exterior edges of objects. A plain contour has a clean, connected line, no shading and emphasizes an open "shell" of the subject. More complex contours can imply shading values through interior outlines (top right), may have line textures or be contrasted with mixed media. Pencil drawing, ball point pen and black markers are good practice tools. Line drawing can create simple graphics on character-mode terminals and printers. There are three common, incompatible, character sets: HP, ANSI/VT, and ECS/PC-8. A graph drawing is in which each edge is represented by a straight line segment.