關於UG NX 中的邊界盒

俺在[UniGraphics]版求救無果！望搞UG二次開發的大蝦們能幫幫俺，謝謝！   
  
https://www.icax.org/viewthread. ... %3D1&page=#pid=

好像挺麻煩的！::O::O::O
有沒有更好的呐？::?::?::?

又错了，x向是min_point[0]=min_point[0]+min_x_dist

sorry，上贴第4点中最小包围盒最小点X轴坐标修正为min_point[3]=min_point[3]＋min_x_dist

利用UG/Open中的UF_MODL_ask_bounding_box（）可得到物体的包围盒，但在装配情况下会偏大。
要得到最小包围盒，可如此实现：
1. 先用UF_MODL_ask_bounding_box（）得到粗略的包围盒最大、最小点坐标；
2. 以这些点为基础，分别沿X轴、Y轴和Z轴做6个辅助参考平面；
3. 用UF_MODL_ask_minimum_dist（）得到6个面与物体的最小距离；
4. 用这六个最小距离对最大、最小点坐标的值进行修正，如设过最小点min_point[3]的法向与X轴平行的平面与物体的最小距离是min_x_dist，则最小包围盒最小点X轴坐标修正为min_point[3]=min_point[3]-min_x_dist。其他照此办理即可。
  
包围盒应是相对绝对坐标系的，物体与绝对坐标系成角度时，需要旋转物体来获取最小包围盒。

有2种方法可以达到这个目的：
1，就是楼上说的边界合，是在大装配中用到的一个咚咚；
2，进入cam，加入一个毛坯，想怎么调就怎么调，最小也很方便。

sunwg-o wrote:
you can try this under ugnx by pressing down Ctrl-c.any problem you can submit,because i just finish it.  
  
  this ugopen_API is programmed with vc++6.

  
謝謝大蝦的熱心幫忙！
不過大蝦的附件好像只能用Ctrl+u調用並且只能對一個體有效！::?::?::?
  

you can try this under ugnx by pressing down Ctrl-c.any problem you can submit,because i just finish it.
  
this ugopen_API is programmed with vc++6.

問題沒解決啊！

Hihi~ this is the first time I leave msg here.
  
I have use this func for my projects year before.
  
This function can fill up the array with min and max value in absolute x, y and z direction when you input the body tag.
  
But for measuring body that is oriented in WCS other than Absolute, that is another research project one of my colleage in University undertaking....
  
Really happy that there are so many chinese using UG API!
  
p.s. I am from HKU(The University of Hong Kong)