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    • 13. 发明授权
    • Graphics in display unit
    • 显示单元中的图形
    • US4779081A
    • 1988-10-18
    • US894860
    • 1986-08-08
    • Yoshiyuki NakayamaAkio HayashiShinji KimuraKenjiro Mori
    • Yoshiyuki NakayamaAkio HayashiShinji KimuraKenjiro Mori
    • G06F3/153G06F3/048G06T1/00G06T11/00G09G5/14G09G1/16
    • G09G5/14
    • A method of drawing figures for a multi-window system in which a plurality of window regions are set on a display screen, and in which a window which is partly overlapped on other windows and is partly concealed is controlled by being divided into a plurality of display or non-display subregions, and the displayed content is changed by designating the window. If a dot constituting the figure is generated from a dot generator, coordinate values of the dot are compared with position data of the designated window to select a dot located in the window. The selected dot is compared with position data of a subregion that constitutes the designated window to find a particular subregion in which the dot exists. If the particular subregion is a display region, the dot located therein is produced on the display screen. A dot generated next is compared with the particular subregion and is determined to be displayed or not. When the dot lies outside the particular subregion, the region to be compared to the dot position data is changed, and the dot position is compared with another subregion or with the designated window.
    • 一种绘制多窗口系统的方法,其中在显示屏幕上设置多个窗口区域,并且其中部分地重叠在其他窗口上并被部分隐藏的窗口被分割成多个窗口区域 显示或非显示子区域,并且通过指定窗口来改变显示的内容。 如果从点发生器生成构成图形的点,则将点的坐标值与指定窗口的位置数据进行比较,以选择位于窗口中的点。 将所选择的点与构成指定窗口的子区域的位置数据进行比较,以找到存在点的特定子区域。 如果特定子区域是显示区域,则在显示屏幕上产生位于其中的点。 接下来生成的点与特定子区域进行比较,并被确定为显示。 当点位于特定子区域之外时,将与点位置数据进行比较的区域改变,并且将点位置与另一子区域或与指定窗口进行比较。