You need to call setUseDisplayList(false) on your geometry/drawable class. biv
On Dec 29, 2007 7:33 AM, Emre Koc <[EMAIL PROTECTED]> wrote: > Hi All, > > I just started to write a class that can draw curves on a osg. I added > a openglwrapper class so that in the beginning I will try to work with > GLU. My class has two main member functions > first one is > > virtual void drawImplementation(osg::RenderInfo&) const > > which handles the draw step and outputs with direct opengl calls. > > and second one is > > void addControlPoint(GLfloat& x,GLfloat& y,GLfloat& z) > > which allowes the user to add more control points to the curve. > > And I attached a picker to call addControlPoints function when user > double clicks on a plane, so that clicked coordinate becomes a new > control point. > > Now the problem is: > > drawImplementation(osg::RenderInfo&) const is being called at the > beginning of the program for once. But during the rendering time osg > does not call that function ever again, even when I edit the control > points array. I set Dynamic DataVariance for all geodes and drawables > but It still calls drawImplementation once at the beginning. > > Any Idea how to solve this problem? I guess I need something to let my > curve drawable being affected in Update traversal but I don't know how > to do it. > > /emre > > On Dec 28, 2007 8:31 PM, Gerrick Bivins <[EMAIL PROTECTED]> wrote: > > Hi Emre, > > Our NURBS objects are defined by structures on disk(ie, read in a file > that > > contains the control points and knot vectors) > > and then the object is rendered. The selection part of our interface > allows > > you to move those control points > > around to modify the shape of the original surface. We don't have > support > > for redefining the > > NURBS object such as control point addition/subtraction, knot > > insertion/removal. > > biv > > > > > > > > On Dec 27, 2007 3:18 PM, Emre Koc <[EMAIL PROTECTED]> wrote: > > > > > > > > > > > > Hi Gerrick, > > > > > > > > > > Previously in gl, we were able to just do selection by using > > glRenderMode > > > > when rendering the points > > > > of the control mesh (another reason to use raw gl) and then > processing > > > > the "hits". > > > > > > So you have some code to render NURB curves at runtime with the > > > defined points which are picked by mouse clicks, is this right? > > > If so, thats the exact thing that I would like to do in osg for the > time > > being. > > > And if your raw gl code does this, can you share the details on how > you do > > that? > > > > > > > > > > > > > > > /emre > > > > > > _______________________________________________ > > > osg-users mailing list > > > [email protected] > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > > -- > Emre Koc > Sabanci University > Faculty of Engineering and Natural Sciences > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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