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BEZIER CURVE DRAWING DEVICE, BEZIER CURVE DRAWING METHOD, AND RECORDING MEDIUM

机译:贝塞尔曲线绘制设备,贝塞尔曲线绘制方法和记录介质

摘要

A Bezier curve drawing device is configured as follows. A control pointcoordinateacquiring unit (10) acquires the coordinates of a plurality of control pointsof a Bezier curve.An inter-control point distance calculation unit (11) selects, using theminimum distance of aresolution for displaying the Bezier curve as a unit, either the horizontaldistance or the verticaldistance of adjacent control points of the Bezier curve, whichever is greater,adds up thusselected distances between adjacent control points, the added-up value beingcalculated as anindicator of the length of the Bezier curve. A division number setting unit(12) sets, based onthe indicator of the length, the number of divisions to be used when theBezier curve is dividedand drawn. A Bezier division apex calculation unit (16) calculates, accordingto the number ofdivisions set by the division number setting unit (12), the coordinates of theend points of eachinterval obtained by dividing the Bezier curve.
机译:贝塞尔曲线绘制设备的配置如下。控制点坐标获取单元(10)获取多个控制点的坐标贝塞尔曲线。控制点间距离计算单元(11)使用最小距离用于将Bezier曲线显示为一个单位的分辨率,可以是水平距离或垂直贝塞尔曲线的相邻控制点之间的距离,以较大者为准,因此加起来相邻控制点之间的选定距离,总和为计算为贝塞尔曲线长度的指示器。分区编号设定单位(12)套,基于长度的指标,当贝塞尔曲线被划分并绘制。贝塞尔曲线顶点计算单元(16)根据到的数量由分割数设置单元(12)设置的分割,每个端点通过除以贝塞尔曲线获得的间隔。

著录项

  • 公开/公告号CA2743039C

    专利类型

  • 公开/公告日2014-07-08

    原文格式PDF

  • 申请/专利权人 NEC SYSTEM TECHNOLOGIES LTD.;

    申请/专利号CA20092743039

  • 发明设计人 TAMAI JUNICHI;

    申请日2009-11-09

  • 分类号G06T11/20;G09G5/20;G09G5/24;

  • 国家 CA

  • 入库时间 2022-08-21 15:54:35

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