草图校正的研究与实施

Theory and Implemetion of Draft Rectifying

总结了校正的常见内容,并对各内容进行了归纳与分析,把校正问题概括为“由动点引起动边”的问题,从而避免了校正内容的杂乱,设计出具有一定通用性的校正方案.该方案利用图来描述图形实体的相互约束,用动态迭代法来处理动边变动对已有约束的影响.系统记录各咬合点,全局遍历结构约束图中的咬合点,局部校正各动边.该方案已用于BYLead的参数化推理中.

The common draft rectifying contents are analysed and concluded to a general subject called 'the element to process effected by relevant points' . In accordance with it , a general method is designed . With graphical representation of constraint, it solves the constranit system by dynamic constraint iteration. With an overall record of bited points, it will process each element . This method is convenient , general and can process complex draft. It has been implemented in BYLcad for parametric design.