[osg-users] converting node coordinates

[sam]

When you zoom your mouse feel forward it's possible that the new sphere is
outside the camera's view and thus being culled out of the drawing. Check
to make sure the sphere doesn't end up behind the camera.

On Thu, Jun 22, 2017 at 10:38 AM, Bruno Oliveira <
bruno.manata.oliveira at gmail.com> wrote:

> I am almost sure I am making some mistake on setting the node's bounding
> sphere. Is my code correct on that example I gave?
>
> 2017-06-22 18:29 GMT+01:00 Bruno Oliveira <bruno.manata.oliveira at gmail.com
> >:
>
>> Sorry I'm not sure what you're asking.
>>
>> I manipulate my scene with a Mouse Manipulator (Trackball), hence the
>> view is refreshed and I can see my nodes, but if I zoom in they disappear
>>
>> 2017-06-22 18:23 GMT+01:00 Sam Brkopac <brkopac at gmail.com>:
>>
>>> Hi Bruno,
>>>
>>> After you manipulate the coordinates do the new bounds result in the
>>> node getting culled by the camera?
>>>
>>> Thanks, Sam
>>>
>>> > On Jun 22, 2017, at 10:12, Bruno Oliveira <
>>> bruno.manata.oliveira at gmail.com> wrote:
>>> >
>>> > Hello,
>>> >
>>> > I have some osg::Nodes with some initial geometry coordinates.
>>> >
>>> > Then, after some rendering, at some point I need to transform those
>>> initial coordinates. I do something like this:
>>> >
>>> >
>>> > void MyNodeGeometry::convertCoordinates() {
>>> >
>>> >     auto* vert = this->getVertexArray();
>>> >
>>> >     for (int i = 0; i < vert->size(); i++) {
>>> >         convertCoordinate(vert->operator[](i));
>>> >     }
>>> >
>>> >     this->setVertexArray(vert);
>>> >
>>> >     this->setInitialBound(this->computeBound());
>>> >     this->firtyBound();
>>> >
>>> > }
>>> >
>>> >
>>> > Also, in all parent Nodes I call
>>> >
>>> >     parentNode->setInitialBound(this->computeBound());
>>> >     parent->firtyBound();
>>> >
>>> >
>>> >
>>> > However, when I do this, I can see my points, BUT when I try to
>>> manipulate my scene with the mouse, the data disappears if I zoom in, and
>>> appears again if I zoom out again.
>>> > This seems like my node's bounds are not well set, But I manually
>>> verified all node's bounds and they are correct....
>>> >
>>> > Any idea?
>>> > _______________________________________________
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>>
>>
>
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