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线是造型活动最基本形态之一。从几何学角度看,线是点移动的轨迹;只有位置和长度,没有宽度和厚度。具有视觉效果的线,不仅有位置、长度、宽度和方向,还有粗细、形状、浓淡等的区别。一般线可分直线、几何曲线(指圆、椭圆、抛物线等)和自由曲线。直线和曲线是决定一切形象的基本要素。用不同工具、材料和方法,可得到感情效果不一样的线,如铅笔线、羽毛勾勒的线、铁丝划出的线、渗开的线、刻刮的线、摄影技术造成的线等等。它们具有各自不同性格:直线给人明确、直率、挺拔的感觉;曲线则给人优雅、柔软、流畅之感。将平行直线较密地排列在一起,可以表现“面”的性质。如将直线的长度、宽
Line is one of the most basic forms of modeling activity. From a geometrical point of view, a line is a point-moving trajectory; there are only positions and lengths, no width and thickness. With visual effects of the line, not only the location, length, width and direction, as well as the thickness, shape, shades, etc. the difference. General line can be divided into straight lines, geometric curves (referring to the circle, ellipse, parabola, etc.) and free curve. Straight lines and curves are the basic elements that determine everything. With different tools, materials and methods, you can get the emotional effects of different lines, such as pencil lines, feather sketched lines, wire drawn lines, seepage lines, scratched lines, lines caused by photography and so on. They have their own different personality: a straight line gives a clear, straightforward, upright feeling; curves give a person an elegant, soft, smooth feeling. The parallel lines are arranged closer together, can show the “surface” of the nature. If the length of the straight line, wide