Open CASCADE, the 3D modelling kernel
3D modeling & numerical simulation

Search the Forums
See All Topics

the normal vector of point is opposite

the normal vector of point is opposite
xiangchunkong 2012/06/27 07:16
I get the Normal vector of points on the model with two way:
first way:
1.use Geom_Surface::D1(u,v,pt,vec1,vec2)
2.vecResult = vec1^vec2(cross product)

second way:
1.use BRepGProp_Face propsface(face);propsface.Normal(SRU,SRV,gpPt,vecResult);

i get the normal vector of the point ,but sometime the normal vector is opposite that direction toward the models's inside

Thanks for any help
You have to be logged in to download the attached file
Latest news
  • Open CASCADE CAD Assistant for iOS platform is available!
  • Open CASCADE Technology 6.9.0 is available for download!
  • JT Assistant for Android

  • © OPEN CASCADE 2000 - 2015  |  Search  |  Contacts   |  Site map