[osg-users] getting eye position / direction

Hi, i am trying to get eyePosition and direction, more precisely, the direction of a ray for the purpose of ray tracing. this is what i am doing: Code: const osg::Vec3d collisionPoint = intersection.getWorldIntersectPoint(); ... osg::Vec3d eyeDirection = collisionPoint - _tracer-getEye();

Re: [osg-users] [build] OpenGLES2.0 build error

Hi Mike, Attached is a cmake toolchain to build osg against GLES2. You need to comment lines from 204 - 207 in the CMakeLists.txt: #the below is taken from ogre, it states the gcc stuff needs to happen before PROJECT() is called. I've no clue if we even need it # Force gcc = 4.2 on

Re: [osg-users] [build] OpenGLES2.0 build error

I guess you are trying to compile for iOS5, if you are not sorry for the noise. Cheers. 2012/3/9 Jordi Torres jtorresfa...@gmail.com Hi Mike, Attached is a cmake toolchain to build osg against GLES2. You need to comment lines from 204 - 207 in the CMakeLists.txt: #the below is taken

Re: [osg-users] osg::text Question on character size when set to SCREEN_COORDS mode

HI David, On 9 March 2012 02:09, David Glenn david.e.glenn@navy.mil wrote: Just wondering: We had always assumed that if you set your setCharacterSize in the SCREEN_COORDS mode that you set it the size of pixels (as told to me originally by a friend) and the height in meters if you are

Re: [osg-users] getting eye position / direction

HI Andrey, I'm rather confused about what you are trying to do, you question seems rather mixed up. Could you take a step back and explain at a higher level what you are trying to achieve and we can then point you in the right direction of how to achieve. Robert. On 9 March 2012 08:29, Andrey

Re: [osg-users] getting eye position / direction

i am trying to compute the direction of an osg::LineSegmentIntersector object. i can get the collision point and i am trying to get the starting point - i need the vector of the intersector's direction. i do this for the purpose of ray tracing (or ray casting). i create the intersectors this

Re: [osg-users] getting eye position / direction

Hi Andrey, Thanks for the explanation, make more sense now. If you have a perspective camera then you'll be able to assume that the all the line segments will start at the cameras eye point and end at the intersection point that is returned. To compute the camera's eye position in world

Re: [osg-users] [osgPlugins] Write animation to mpeg or other video format

on linux you can use glc (google for glc capture) for this task. on output you'll get either *.png's per frame, or uncompressed video. on encoding to more usable format you can check this page https://wiki.archlinux.org/index.php/GLC 08.03.2012, 20:33, Zachary Hilbun osgfo...@tevs.eu: Hi, I

[osg-users] OpenSceneGraph 3.1.1 dev release tagged

Hi All, I have just tagged the OpenSceneGraph-3.1.1 developer release. Merged pending submissions that fixed a range of bugs, full ChangeLog below. source package : OpenSceneGraph-3.1.1.zip svn tag: svn co http://www.openscenegraph.org/svn/osg/OpenSceneGraph/tags/OpenSceneGraph-3.1.1

Re: [osg-users] Screen Shot question

Is there also a high res example code? Am 09.03.2012 01:45, schrieb Sergey Kurdakov: Hi Thomas Is there a way to capture this programatically? here is example from osgWorks where you have full control: http://code.google.com/p/osgworks/source/browse/trunk/src/osgwTools/ScreenCapture.cpp

Re: [osg-users] Performance question: Switch / NodeMask / WriteToFile

Here is my repro case for the 1 children of a switch node causing massive cull times. Tried this piece of code on Linux with osg 3.1.1 developer release. I do not observe any high cull times here, even when drastically increasing the number of children of the switch node. Too bad, my

[osg-users] Screen Shot question

Hi Is there also a high res example code? http://forum.openscenegraph.org/viewtopic.php?t=3482 regards Sergey On Fri, Mar 9, 2012 at 7:33 PM, Werner Modenbach werner.modenb...@texion.eu wrote: Is there also a high res example code? ___

[osg-users] Simuating realistic large crowds with RVO2 C++ library

Hello, I am currently working on a demo that shows the use of the RVO2 C++ library with OpenSceneGraph. Check out these videos to get an idea of what RVO2 is capable of: http://www.youtube.com/playlist?list=PLD56A0C7765234DCDfeature=plcp This amazing library can be used for simulating large

Re: [osg-users] If I set a vertex color using floats and access the vertex color in a shader, is there a loss of precision?

So I decided to go again and try to use a generic vertex attribute to store my index numbers. I noticed from another osg forum thread that there is currently a problem using int values for vertex attributes but that floats are working and can be converted to ints in the shader. With that in

Re: [osg-users] If I set a vertex color using floats and access the vertex color in a shader, is there a loss of precision?

On 03/09/2012 02:08 PM, Ethan Fahy wrote: So I decided to go again and try to use a generic vertex attribute to store my index numbers. I noticed from another osg forum thread that there is currently a problem using int values for vertex attributes but that floats are working and can be