随着计算机及图形学技术的发展,座舱仪表对图形显示的质量提出了更高的要求。由于硬件系统采用的是光栅图形显示系统,罗盘画面旋转受光栅扫描显示器的限制存在着锯齿形失真、扭曲等走样现象。针对这个问题,通过分析走样现象产生的原因,采用Bresenham算法应用于罗盘刻度线的生成,获得了明显的反走样效果。利用直线对称性和圆的对称性,提高了全罗盘画面的生成速度。

With the development of computer and graphics technology,the cockpit instruments have brought about a great challenge to the quality of the graphics.As hardware system using grating graphics display system,there are saw tooth-shaped distortion in compass screen when it rotates owing to the restrictions of the grating scan display.Based on this problem,by analyzing the causes of the aliasing,using a method of arithmetic of Bresenham to get rid of it,the effect of anti-aliasing has been proved obviously.With the application of the symmetry of line and circularity,the speed of the generation of a whole compass screen is highly advanced.