Hi Viggo,
On Wed, Jul 23, 2008 at 6:51 AM, Viggo Løvli [EMAIL PROTECTED] wrote:
Is there any way to know whether or not the scene-graph has been modified?
The OSG has very localised mechanisms for tracking dirty state, such
as in osg::Image and osg::Array, but there isn't a general mechanism,
Hi Peter,
What you say is true in most cases. The 'simplest' way to do this would be to
tell my system that the node-tree need re-formatting each time we call OSG to
add children. That would require two calls each time, and also requre humans to
remember to implement both calls. This opens
Hi Viggo,
This is only a suggestion (you may have other reasons). To avoid the human
error as you called it, meaning that if someone forgets to call the reformat
code...
then you should have a method that 3rd party code/humans must use when
adding to your scene, for example
void
Hi Peter,
This is the problem I am trying to solve:
---
Two partly transparent polygons intersect each other. Example: A tree created
from two quads. The tree has many pixels that is completely opaque, and many
pixels that is semi visible (transparent)
Hi Viggo,
I think you are on totally wrong take w.r.t trying to track changes in
the scene graph, for what is effectively just a custom transparent
renderbin setup, and has little to do with the scene itself.
The way you should tackle it is to customize the rendering backend so
that the bins you
Hi Robert,
That sounds interesting. I hope it can solve my problem in a much better way.
I am looking at the camera class and so far assuming that I need to use the
setPreDrawCallback function. Looks to me like RenderStage calls this after
culling has been done.
My day is ending now, will
Hi,
My code is currently formatting the node-masks of the whole scene-graph before
we start rendering. The formatting code is only ran once.
If a sub-node is added to the node-tree afterwards then I want to run my
formatting code again.
Is there any way to know whether or not the
Hi Viggo,
Don't know the details of your code, but if you are adding a sub-node then
you have code already that is called for adding the sub-node and
thereby you know when the scene-graph has been modified?
regards,
Peter
http://osghelp.com
On Wed, Jul 23, 2008 at 7:51 AM, Viggo Løvli [EMAIL
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