• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Aerospace Computing, Information, and Communication >Geometric Sketch Constraint Solving with User Feedback
【24h】

Geometric Sketch Constraint Solving with User Feedback

机译：用户反馈的几何草图约束求解

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Modern CAD systems rely on two-dimensional sketches as the basis for the creation of most three-dimensional geometry. These sketches consist of qualitative shape information as well as a series of constraints to quantify the exact size and shape of the various segments, arcs, and splines that comprise the sketch. Example constraints include overall lengths, symmetries, parallel and/or perpendicular segments, and arc radii. For a given sketch, there are many sets of constraints that unambiguously define the shape. Unfortunately, sometimes a user prescribes a set of constraints that do not allow the sketch to be solved. Providing feedback to the user as to how to change the constraint definitions to remedy the problem is still a largely unsolved problem. Herein is described a series of techniques for helping a user diagnose sketch problems and provide to the user a series of options that will cause the sketch to be properly solved. The techniques are incorporated in the Open CSM solid modeling system. Several sample configurations that use these techniques are shown, with a description of the user interaction that the system provides.
机译：现代CAD系统依赖于二维草图作为创建大多数三维几何图形的基础。这些草图由定性形状信息以及一系列约束组成，以量化构成草图的各种线段，弧线和样条线的精确大小和形状。约束示例包括总长度，对称性，平行和/或垂直线段以及圆弧半径。对于给定的草图，有许多约束条件可以明确定义形状。不幸的是，有时用户会规定一组不允许求解草图的约束。向用户提供有关如何更改约束定义以解决该问题的反馈仍然是很大程度上未解决的问题。在此描述了用于帮助用户诊断草图问题并向用户提供将导致草图被正确解决的一系列选项的一系列技术。这些技术已包含在Open CSM实体建模系统中。显示了使用这些技术的几种示例配置，并描述了系统提供的用户交互。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号