[osg-users] Idea to implement a kind of 'rubber mode'

[Christoph Dohmen]

Hi all,

I'm looking for some inspiration for solving the following 'problem':
Currently I'm drawing basic line geometries like in attachment line.png. And I'm able to draw items above the geometries (combo.png). But the final goal must be some kind of 'rubber mode' which makes the geometry transparent and keeps the background (liek in symbol.png).

What may be the technique to solve this?

Thank you!

Cheers,
Christoph

------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=74703#74703



-------------- next part --------------
A non-text attachment was scrubbed...
Name: symbol.png
Type: image/png
Size: 2480 bytes
Desc: not available
URL: <http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/attachments/20180911/3363251d/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: combo.png
Type: image/png
Size: 3224 bytes
Desc: not available
URL: <http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/attachments/20180911/3363251d/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: line.png
Type: image/png
Size: 2113 bytes
Desc: not available
URL: <http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/attachments/20180911/3363251d/attachment-0002.png>