在三维图形浏览器中，所有交互功能的实现都依赖于对图形对象的准确拾取。
At 3d graphic browser, all interactive functions depend on the accurate selection with graphics.
图形的交互式编辑部分主要研究了图元的拾取算法和使用变换矩阵实现对图元的旋转、比例缩放和平移等二维变换。
As for the interactive graphic editing, the article mainly focuses on graphic element collect algorithm and two-dimension transformation such as rotation, scale and translation using convert matrix.
在此基础之上进一步研究了三维图形的交互方法，给出了“二维拾取”的解决方案。
On the basis of above, the paper study 3d dynamic interactive and resolve it by method of "Two-dimension selecting" idea.
在此基础之上进一步研究了三维图形的交互方法，给出了“二维拾取”的解决方案。
On the basis of above, the paper study 3d dynamic interactive and resolve it by method of "Two-dimension selecting" idea.
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