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用一条三次Q-Bézier曲线描述了汽车车灯造型轮廓;提出首先由设计师在平面视图中绘制并编辑汽车车灯造型的二维三次Q-Bézierr曲线轮廓图,然后将其投影到汽车车身上,最后通过对曲面进行修剪获得车灯造型轮廓的方法。该方法基于三次Q-Bézier曲线生成及拼接原理,可以迅速从全局或局部调整车灯轮廓线条,获得光顺的曲线效果,从而快速获得多个车灯轮廓的造型方案。
A three-step Q-Bézier curve is used to describe the outline of a car’s lamp shape. A 2D three-dimensional Q-Bézier curve is first drawn and edited by a designer in a plan view and then projected onto a car body Finally, the method of trimming the curved surface to obtain the outline of the lamp shape is given. Based on the principle of three times Q-Bézier curve generation and splicing, the method can rapidly adjust the headlight contour lines from global or local to obtain the smooth curve effect so as to quickly obtain the styling schemes of multiple headlight contours.