On Wed, 2011-06-15 at 19:06 +0200, basil huffman wrote:
> I am looking to figure out how to give thickness to line segments. I am
> creating them as follows
>
> Code:
>
> osg::ref_ptr<osg::Geometry> geom = new osg::Geometry;
> osg::ref_ptr<osg::DrawArrays> drawArrayLines = new
> osg::DrawArrays(osg::PrimitiveSet::LINE_STRIP);
>
> osg::ref_ptr<osg::Vec3Array> vertexData = new osg::Vec3Array;
>
> geom->addPrimitiveSet(drawArrayLines);
> geom->setVertexArray(vertexData);
>
> //loop through points
> vertexData->push_back(osg::Vec3d(point.X,point.Y,point.Z));
> //
> drawArrayLines->setFirst(0);
> drawArrayLines->setCount(vertexData->size());
>
> // Add the Geometry (Drawable) to a Geode and return the Geode.
> osg::ref_ptr<osg::Geode> geode = new osg::Geode;
> geode->addDrawable( geom.get() );
>
>
>
>
> How can I give these line segments thickness and color? Also, is this the
> best way to plot line segments?
You want to use <osg/LineWidth> for this if you're using the FFP. It's
quite easy to use:
osg::LineWidth* lineWidth = new osg::LineWidth();
lineWidth->setWidth(2.0f);
...getOrCreateStateSet()->setAttributeAndModes(lineWidth,
osg::StateAttribute::ON);
If you're using a programmable pipeline, I'm not entirely sure this
works. Haven't tested it (yet).
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=40542#40542
>
>
>
>
>
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>
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