Re: [osg-users] Get all vertices of an OSG Group

Hello, I wasn't aware of these 3 ways to manage colors on vertices. It works fine now. Thank you so much for your explanation ! ... Cheers, Clement -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=66711#66711

Re: [osg-users] Get all vertices of an OSG Group

Hi Bemt, i think you got something wrong in the beginning. There are 3 possible ways to apply a color to a vertex: - Material: Materials define how the surface is interacting with lights. Most times you are only intereseted in diffuse value. osg::Material * mat = dynamic_cast(geometry)->

Re: [osg-users] Get all vertices of an OSG Group

I have a 3D model stored in .osgb files with different level of details, this is the main reason I chose to use OSG. It consists of a 3D point cloud and images painted on it. Now, I want to focus on a pattern recognition process so I am trying to get every vertices coordinates and assign them R

Re: [osg-users] Get all vertices of an OSG Group

Hi Clement, Hi, After few tries on different files, I think osg::Material are not what I am looking for since I have for example, for each drawable, ~900 vertices (with different colors each) and only 1 material (which can return only 1 osg::Vec4 of RGBA). Can you give us an example file? Som

Re: [osg-users] Get all vertices of an OSG Group

Hi, After few tries on different files, I think osg::Material are not what I am looking for since I have for example, for each drawable, ~900 vertices (with different colors each) and only 1 material (which can return only 1 osg::Vec4 of RGBA). I tried to convert .osgb file into .osg to see wh

Re: [osg-users] Get all vertices of an OSG Group

Hi Clement, I checked what you suggested but I don't really understand how I can retrieve the respective colors of each points I am looking for. Do you have any idea how it can be done ? You need to extend your visitor to capture the StateSet active for your drawable. You need to add a osg::N

Re: [osg-users] Get all vertices of an OSG Group

I checked what you suggested but I don't really understand how I can retrieve the respective colors of each points I am looking for. Do you have any idea how it can be done ? ... Thank you! Cheers, Clement -- Read this topic online here: http://forum.openscenegraph.org/viewto

Re: [osg-users] Get all vertices of an OSG Group

The colours may also be in a material. Which is in a osg::StateSet object. Tony V -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=2#2 ___ osg-users mailing list osg-u

Re: [osg-users] Get all vertices of an OSG Group

Hello, Thank you for your quick answers, it was really helpful. I defined a new visitor inherited from NodeVisitor and I have access to the vertices. But I also need to get the colors of this vertices. I tried to get colors in an osg::Vec4Array with getColorArray() but it doesn't work on every

Re: [osg-users] Get all vertices of an OSG Group

Hi Clement+Tony, On 26 March 2016 at 02:16, Tony Vasile wrote: > Hi Clement, > This is rather easy to do. All you need is to define a NodeVisitor and > run it on the group. Using this way you only need to have an accept call > for the Geode and process the drawables under the Geode. > > Code:

Re: [osg-users] Get all vertices of an OSG Group

Hi Clement, This is rather easy to do. All you need is to define a NodeVisitor and run it on the group. Using this way you only need to have an accept call for the Geode and process the drawables under the Geode. Code: class InfoVisitor : public osg::NodeVisitor { public: InfoVisitor()

[osg-users] Get all vertices of an OSG Group

Hi, I have to work on a point cloud which was stored in .osgb files for LOD management reasons. I have extracted it in an osg::Group, then this Group contains other Groups and so on. I need to access every points of my cloud to extract coordinate or colors. I don't know if there is an easy way