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1. 发明授权

US06459439B1 Reshaping of paths without respect to control points 失效
标题翻译：改变路径，而不是控制点
公开(公告)号：US06459439B1
公开(公告)日：2002-10-01
申请号：US09037720
申请日：1998-03-09
申请人： John B. Ahlquist, Jr. , Douglas S. Benson , Fan Yu , Steven R. Johnson , Brian T. Schmidt
发明人： John B. Ahlquist, Jr. , Douglas S. Benson , Fan Yu , Steven R. Johnson , Brian T. Schmidt
IPC分类号： G06T320
CPC分类号： G06T11/203
摘要： The inventive mechanisms convert a path, which represents a graphical object, into a plurality of line segments. Thus, the path can be reshaped without respect to existing Bezier control points. The first mechanism allows a user to ‘pull’ a segment of a path. A user selects a specific place on the path, pulls the selected place along with a portion of the path on either side of the place to a desired location. The second mechanism allows a user to ‘push’ a segment of a path, by using an arbitrary shape and sculpting the path. The arbitrary shape is used in a manner similar in which a sculptor would use a putty knife and sculpts away part of the path, by pushing that shape into the path. The path is being repelled from the shape, as the shape is being pushed. The third mechanism allows a user to reshape an area or region of the path. The user selects a specific point in space and modify any parts of the path that lie within that region of space.
摘要翻译：本发明的机构将表示图形对象的路径转换成多个线段。因此，路径可以重新整形，而不会影响现有的贝塞尔控制点。第一种机制允许用户“拉”路径的一段，用户选择路径上的特定位置，将所选位置与位置任意一侧的路径的一部分一起拉到所需位置，第二个机制允许用户通过使用任意形状和雕刻路径来“推”路径的一段。任意形状的使用方式类似于雕塑家将使用油灰刀，并通过将该形状推入路径来雕刻路径的一部分。由于形状被推动，路径被排除了形状。第三种机制允许用户重新形成路径的区域或区域。用户选择空间中的特定点，并修改位于该空间区域内的路径的任何部分。

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