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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。

2. 发明授权

US5434959A System and method of generating variable width lines within a graphics system 失效
标题翻译：在图形系统内生成可变宽度线的系统和方法
公开(公告)号：US5434959A
公开(公告)日：1995-07-18
申请号：US833957
申请日：1992-02-11
申请人： James R. Von Ehr, II , John B. Ahlquist, Jr. , Samantha Seals-Mason
发明人： James R. Von Ehr, II , John B. Ahlquist, Jr. , Samantha Seals-Mason
IPC分类号： G06F3/041 , G06F3/033 , G06F3/038 , G06F3/048 , G06T11/80
CPC分类号： G06F3/04845 , G06T11/203
摘要： A video graphics system and method for creating variable width lines such that the lines may be easily edited. As a line image is created, a center point of that image along its length is temporarily established having width information at various points. This width information is used to create an outline of image of the desired shape, the outline having point data spaced at intervals. This point data can then be edited by a user to create different shapes. In situations where a pressure sensitive stylus is used to create the variable length line, a look-back technique is employed to insure that the line remains wide at the end point even though the user is reducing pressure as the system is removed from the pad.
摘要翻译：一种用于创建可变宽度线的视频图形系统和方法，使得可以容易地编辑线。当创建线图像时，沿着其长度的该图像的中心点被临时建立，其在各个点处具有宽度信息。该宽度信息用于创建期望形状的图像的轮廓，轮廓具有间隔开的点数据。然后可以由用户编辑该点数据以创建不同的形状。在使用压敏触针来创建可变长度线的情况下，使用回溯技术来确保线路在端点处保持宽，即使当系统从衬垫移除时用户正在减小压力。

3. 发明授权

US5353396A System and method for generating complex calligraphic curves 失效
标题翻译：用于生成复杂书法曲线的系统和方法
公开(公告)号：US5353396A
公开(公告)日：1994-10-04
申请号：US894272
申请日：1992-06-04
申请人： John B. Ahlquist, Jr. , James R. Von Ehre, II , Samantha Seals-Mason
发明人： John B. Ahlquist, Jr. , James R. Von Ehre, II , Samantha Seals-Mason
IPC分类号： G06T11/20 , G06F15/40
CPC分类号： G06T11/203
摘要： A system and method for generating complex calligraphic curves from an input source. The input can be a stylus and the angle of attack of the line with respect to a surface can be fixed or variable. The calligraphic curve can have a fixed or variable width which can be point-by-point edited to form a new calligraphic curve. The system has the ability to expand a calligraphic image with crossing strokes.
摘要翻译：用于从输入源生成复杂书法曲线的系统和方法。输入可以是触针，并且线相对于表面的迎角可以是固定的或可变的。书法曲线可以具有固定或可变的宽度，可以逐点编辑以形成新的书法曲线。该系统具有扩展具有交叉笔画的书法图像的能力。

4. 发明授权

US5361333A System and method for generating self-overlapping calligraphic images 失效
标题翻译：用于生成自重叠书法图像的系统和方法
公开(公告)号：US5361333A
公开(公告)日：1994-11-01
申请号：US893840
申请日：1992-06-04
申请人： John B. Ahlquist, Jr. , James R. Von Ehr, II , Samantha Seals-Mason
发明人： John B. Ahlquist, Jr. , James R. Von Ehr, II , Samantha Seals-Mason
IPC分类号： G06T11/20 , G06F15/40
CPC分类号： G06T11/203
摘要： A system and method for generating self-overlapping calligraphic images from an input source. The input can be a stylus and the angle of attack of the line with respect to a surface can be fixed or variable. The calligraphic image can have a fixed or variable width which can be point-by-point edited to form a new calligraphic image. The system has the ability to expand a calligraphic image with overlapping strokes and subsequently edit the image.
摘要翻译：一种用于从输入源产生自重叠书法图像的系统和方法。输入可以是触针，并且线相对于表面的迎角可以是固定的或可变的。书法图像可以具有固定的或可变的宽度，其可以逐点编辑以形成新的书法图像。该系统能够以重叠笔画展开书法图像，并随后编辑图像。

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