Hello,
I have a large terrain map which I load from an *.osg file containing a list of
ProxyNode objects containing *.ive files, using osgDB::readNodeFile.
My end goal is to get RGB of points on the texture map found through a line
segment intersection.
I have read through the mousePosition function in the InteractiveImageHandler
class which shows how I would get the texture coordinates of the point
intersected.
>From there, I attempted to get the RGB value this way:
Code:
osg::Drawable * drawable = intersection.drawable.get();
if(drawable->getStateSet())
{
state_set = drawable->getStateSet();
osg::Texture * texture =
dynamic_cast<osg::Texture*>(state_set->getTextureAttribute
(0, osg::StateAttribute::TEXTURE));
if(texture)
{
textureImage = texture->getImage(osg::Material::FRONT);
return textureImage->getColor(textureCoordinates);
}
}
This snippet produces a valid drawable, however the drawable returns a NULL
stateset and so I can't obtain the texture object.
How can I obtain the osg::Image to get RGB in this case? Or, is there a better
method?
Thanks-
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=50366#50366
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