Hi YangXiao,
I think you should enough elements (equals to the size of the vertex
array) in the color array if using BIND_PER_VERTEX.
Wang Rui
2008/11/9 YangXiao <[EMAIL PROTECTED]>
> Thanks *Robert *
> *Now i error is in my *DrawableUpdateCallback
> **
> void DrawableUpdateCallback::update(osg::NodeVisitor* nv, osg::Drawable*
> drawable)
> {
> osg::Geometry* polyGeom = dynamic_cast<osg::Geometry* >(drawable);
> colors->push_back(osg::Vec4(1,0,0,1)); .
> polyGeom->setColorArray(colors.get());
> polyGeom->setColorBinding(osg::Geometry::BIND_OVERALL);
>
> }
> This is ok.
> But when i use
> {
>
> colors->push_back(osg::Vec4(1,0,0,1));
> polyGeom->setColorArray(colors.get());
> polyGeom->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
> }
>
> There is runtime error.That is when i computer my new colors per vertex, I
> can not bind these new color array to my Drawable in DrawableUpdateCallback
>
> Best Regards.
>
>
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