Hi, i' m looking for a way to get the vertex positions of my geometry. i know there are methods, provided by osg, to access these vertex positions, but i wanted to get some insight how they are handled by osg, so i debugged a simple scene.
i found the "geometry" object along with the "_primitives" data member, referencing my 5 "DrawArrays" with the correct indexes. the debugger also showed me a "_vertexData" member, but i couldn't find any reference to the actual vertex positions. (i set my breakpoint in "viewerbase.cpp" in the ViewerBase::frame() at the eventTraversal() function.) here is my .osg scene file: Code: LOD { nodeMask 0xffffffff cullingActive TRUE Radius -1 RangeMode DISTANCE_FROM_EYE_POINT RangeList 1 { 0 1e+010 } num_children 1 Group { nodeMask 0xffffffff cullingActive TRUE num_children 1 MatrixTransform { nodeMask 0xffffffff cullingActive TRUE StateSet { DataVariance STATIC rendering_hint DEFAULT_BIN renderBinMode INHERIT GL_CULL_FACE ON GL_LIGHTING OFF CullFace { mode BACK } } referenceFrame RELATIVE Matrix { 1 0 0 0 0 1 0 0 0 0 1 0 682985 5.21326e+006 0 1 } num_children 1 Geode { nodeMask 0xffffffff cullingActive TRUE num_drawables 1 Geometry { PrimitiveSets 5 { DrawArrays LINE_STRIP 0 5 DrawArrays LINE_STRIP 5 5 DrawArrays LINE_STRIP 10 5 DrawArrays LINE_STRIP 15 5 DrawArrays LINE_STRIP 20 5 } VertexArray Vec3Array 25 { 218.39 263.092 0 ... -19.3272 -195.515 0 } ColorBinding PER_VERTEX ColorArray Vec4Array 25 { 0.001251 0.563585 0.193304 1 ... 0.808741 0.585009 0.479873 1 } } } } } } * where can i find them? * and whats the prefered way to access them finally in my application? i think it can be done both with a visitor (osg::Drawable::AttributeFunctor::apply() like in the osgprerender example), and with a getChild().getVertexArray() Thanks in advance, christian ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8702#8702 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org