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摘要：
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介绍了在板料成形数值模拟的后置处理软件中实现人机交互。对图形进行几何变换 ,即平移、旋转和利用视口变换进行图形缩放的技术 ,以及基于OpenGL拾取机制的板料网格上节点和单元拾取方法。
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In this paper,a method realizing the interaction between user and computer in the post processor of numerical simulation of sheet forming is introduced.Transformed the graphic such as translation,rotation and scale and the technique of scaling graphic with viewport transformation is detailed.The method of picking up nodes and elements on the surface of sheet models is discussed.
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基金项目：
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作者简介：
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参考文献：
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1 白燕斌,史惠康OpenGL三维图形编程指南北京:机械工业出版社:1998
2 贾志刚精通OpenGL 北京:电子工业出版社,1998
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