Hi Sergey,
You need to add your new vertices to the geometry vertex data and
update the first and size of your primitive set which is drawing the line.
For example
========
osg::Geometry* geom // is your geometry
osg::DrawArrays* drawArrayLines = new
osg::DrawArrays(osg::PrimitiveSet::LINE_STRIP); // Is your line strip
Primitive set
geom ->addPrimitiveSet(_drawArrayLines); // Add primitive set
Whenever you have new vertex add the new vertex to the vertex array of
your geometry and call
drawArrayLines->setFirst(0);
drawArrayLines->setCount( Num of vertex in your vertex array);
I Hope this will help you
cheers
RJ
Sergey wrote:
Hi, ALL
How can I draw line , and append to this line new vertices (nodes) time after
time? For example I need to draw a trajectory of moving object.
In examples I have seen only static lines with determined count of vertices.
Thank you.
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=9969#9969
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