Re: [osg-users] [vpb] Terrain Height as Texture

Hi Jonathan, On 15 November 2011 13:21, Jonathan Klein jonathan_kl...@web.de wrote: Well, the problem is, that I need the surrounding heights. It is a terrain visualisation project and i need to calculate things like openness (some Ambient Occlusion related thing) or terrain roughness, for

Re: [osg-users] [vpb] Terrain Height as Texture

Hi, what about the GeometryType Parameter in osgdem? http://www.openscenegraph.org/projects/VirtualPlanetBuilder/wiki/CommandLineOptions I can't find any documentation what the difference between HEIGHT_FIELD, POLYGONAL and TERRAIN is, but I think, HEIGHT_FIELD might be able to solve my

Re: [osg-users] [vpb] Terrain Height as Texture

Well, the problem is, that I need the surrounding heights. It is a terrain visualisation project and i need to calculate things like openness (some Ambient Occlusion related thing) or terrain roughness, for which I need for example a 5x5 kernel around my pixel, so a heightmap lookup would be

Re: [osg-users] [vpb] Terrain Height as Texture

Hi Jonathan, It seams that there is no way to extract that information just form the vertex data (because the vertex shader only processes one vertex at a time). Yes, sounds like what you need is more than what I thought you needed :-) I don't think VPB supports that out of the box, but

[osg-users] [vpb] Terrain Height as Texture

Hi, I used osgdem to create a Terraindatabase from 2 image files (Heightmap and Colormap). Is there any way to access the height information in a texture? I need to do some calculations in the shader for which i need informations abount the surrounding terrain height, at guessed that it would

Re: [osg-users] [vpb] Terrain Height as Texture

Hi Jonathan, I used osgdem to create a Terraindatabase from 2 image files (Heightmap and Colormap). Is there any way to access the height information in a texture? I need to do some calculations in the shader for which i need informations abount the surrounding terrain height, at guessed