[osg-users] question about drawing/modifying lines in OpenSceneGraph

Kim Bale kcbale at googlemail.com
Fri Nov 6 12:25:41 PST 2009


Haha, I had a feeling you'd jump in ;)

K.



2009/11/6 Jeremy Moles <jeremy at emperorlinux.com>:
> On Fri, 2009-11-06 at 14:12 -0600, Nguyen Tien Dat wrote:
>> Dear all,
>> I draw a line as following:
>>
>>         osg::Geometry* geo = new osg::Geometry();
>>       // define some vertices
>>       osg::Vec3Array* v = new osg::Vec3Array;
>>       v->push_back(start);
>>       v->push_back(end);
>>
>>       // draw lines
>>       geo->setVertexArray(v);
>>
>>       geo->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES, 0, 2, 1));
>>
>>       geode->addDrawable(geo);
>>
>> But the line is hardly to be seen because it's too thin and has white
>> color. So my question is:
>> - Can I change the color of the line? If yes, please tell me how.
>> - Can I change the thickness of the line? If yes, pleas tell me how.
>
> Out of curiosity, what are you using the line drawing for? And how
> high-quality must the lines be? :)
>
>> Thanks,
>> Dat
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>> osg-users at lists.openscenegraph.org
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
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