Re: [osg-users] Visualizing 3D-Points including standard deviation

2010-08-19 Thread Gerwin de Haan
Hi Felix, instead of using explicit 3D shapes, you could also use view-aligned quads with a semi-transparent gauss-texture. These textures could be pre-generated, I think the fountain example in OSG might also be helpful with this. They could also be created on demand in shaders, based on their

Re: [osg-users] Visualizing 3D-Points including standard deviation

2010-08-19 Thread Felix Engelmann
Thank you for the suggestions, I think a billboard with a gaussian texture is right what I need. Either a view-aligned billboard, which requires to update the width/height of the billboard - or a static billboard with 2 (or 3) crossing quads. A source code example would be great! Could you ask

[osg-users] Visualizing 3D-Points including standard deviation

2010-08-18 Thread Felix Engelmann
Hi, I need to visualize points in 3D, whose positions are Gauss distributed. The expected values and the standard deviations for each x, y and z coordinate are given. So, how can I do that with OSG? I could draw a sphere (using osg::SphereDrawable) with a fixed radius at the center and another