I tried out what u said , i got the node using Linesegement intersector , then i will got drawable class , then by using TriangleFunctor class , i am able to get all the triangles with their normals , now my i need to push the point a bit inside so that it looks etched , so i will decrease it by using its normal . That means divide the triangles and make 3 triangles , but how shud i add these triangles to the drawable class and delete the old trianlge, and see the effect in the window . My basic doubt is how shud i edit the mesh , i didnt find any editing in osggeometry example . :(
Thanx in advance PS: I think just by pushing a point wont help so i need to push a a square region :( On 8/11/07, Alberto Luaces <[EMAIL PROTECTED]> wrote: > > Could you post what you have coded so far in order to see what is wrong? > For > now, just post the mesh modification code. Could it also be that you are > not > calling osg::Drawable::dirtyDisplayList() so the drawable never gets > modified? > > Alberto > > El Sábado 11 Agosto 2007, maruti borker escribió: > > I was not able to edit the mesh data.. can u give some more refernces ?? > > > > On 8/8/07, Alberto Luaces <[EMAIL PROTECTED]> wrote: > > > El Martes 07 Agosto 2007, maruti borker escribió: > > > > HI everyone > > > > I am a n00b in OSG and i am using OSG 2.0 in > linux . > > > > > > I > > > > > > > wam developing a system which will needs an option where the user > can > > > > change the loaded model by mouse clicks . The result of one mouse > click > > > > shud engrave a point at that point . That is , if i drag on the > model > > > > > > and > > > > > > > draw a line then the line shud be engraved on the model . > > > > > > > > So what i did was used osgUtil::LIneSegementIntersecto > r::Intersection > > > > > > to > > > > > > > find the intersection and then get the points , and then move the > > > > points > > > > > > in > > > > > > > a direction negative to the direction of the plane normal . But i > dont > > > > > > have > > > > > > > any idea to implement this any help ???? > > > > > > > > Thanx > > > > - > > > > Maruti Borker > > > > > > Hi, > > > > > > as you mentioned, you can use the LineSegementIntersector, and then > get > > > the > > > mesh data from the nodes you picked, transform it and modify the > > > drawable's > > > nodes. To get and modify the mesh data of a Geode, see the osggeometry > > > example. It can also help using the osg::TriangleFunctor class. > > > > > > HTH, > > > > > > Alberto > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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