Re: [osg-users] About Changing Parental Nodes?
Hi, When you put a node under a matrixTransform, this node will be deplaced and transformed depending on the MatrixTransform. This behavior is totaly adapted to the scene graph. If you want your node to stay a the same place, you will need to add it in an other place, or you will have to move it first at the opposed transformation of your matrixtransform nodes, and after that add it to them... Regards, Vincent 2008/7/24 Ümit Uzun [EMAIL PROTECTED]: Hi all, I have an model which illustrated at graphics.png image. I remove the 'yaw' group node and add under the 'planetary-MatrixTransform-MatrixTranform-yaw' node. But when I am doing it I don't want to make change any components world position. But when I added the yaw group node under the planetary's MatrixTransform node it's position getting undesired change. What can I do for protect the nodes position when I am reorganizing the component's node on the scenegraph? Best Regars. Umit UZUN ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] About Changing Parental Nodes?
El Jueves 24 Julio 2008ES 09:39:40 Vincent Bourdier escribió: If you want your node to stay a the same place, you will need to add it in an other place, or you will have to move it first at the opposed transformation of your matrixtransform nodes, and after that add it to them... ...or leave the subgraph that you don't want to move where it is and put it under a MatrixTransform with the ABSOLUTE_RF parameter set instead of RELATIVE_RF. Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] glPointSize no longer working for me?
I had something possibly similar a while ago - search the archives for GLSL Shaders and Points (repost), or go to http://osgcvs.no-ip.com/osgarchiver/archives/July2005/0003.html It might be related to what you are doing. David ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] About Changing Parental Nodes?
If I understand your problem correctly, the general approach would be to compute the coordinate system matrix local to a group prior to a move (with computeWorldToLocal) - call it A - then to move the node, recompute the coordinate system in the new location - call this B - and apply the correct matrix - i.e. inverse(B) * A - to the immediate parent transform to get the correct positioning. In this way, when moving the object around in the scenegraph, it won't move in the world frame. In this case, the yaw group doesn't have a parent transform, so the initial matrix is the identity. The destination matrix will be the transform of planetary's MatrixTransform node, so you will need to apply the inverse of this matrix to your yaw specific MatrixTransform. I can't help but think that you must be able to persuade your 3DS model to be in a much more useful structure - all this programmatic model hacking (although useful for understanding OSG) seems quite clumsy... Regards, David ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Running OSG application in Firefox
Hi all , I want to write a plugin so that i can embed my OSG application in Firefox browser. Have any one tried this before ? Please suggest me some pointers to start with . cheers RJ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] About Changing Parental Nodes?
Hi there, Firstly thanks for useful replies. I know, this programmatic operation is clumsy but I don't know any way to reorganize my 3d model structure. So I am trying to handle my model's components and then I will write the created scene in osg format. Then I can traverse the scene easily. I succeed placing the components on the right place by using InverseMatrix like below, -- osg::ref_ptrosg::MatrixTransform planetaryTransformNode1=dynamic_castosg::MatrixTransform*(planetarynode-getChild(0)); osg::ref_ptrosg::MatrixTransform planetaryTransformNode2=dynamic_castosg::MatrixTransform*(planetaryTransformNode1-getChild(0)); osg::Matrixd mm1=planetaryTransformNode1-getInverseMatrix(); osg::Matrixd mm2=planetaryTransformNode2-getInverseMatrix(); osg::ref_ptrosg::MatrixTransform additionalMT = new osg::MatrixTransform(mm1 * mm2); additionalMT-addChild(yawnode.get()); planetaryTransformNode2-addChild(additionalMT.get()); -- When I perform this way to the additive node's Matrix Trasform, it can place right position on the screen. In right there, I have some question about defining center to the newly created MatrixTrasform node. Because when I try to rotate the yawnode around the Zup axes, it is rotating around the vec3(0.0,0.0;0.0) pivot point. If I use a PositionAttitudeTrasform, I can define new pivot point easly but what about MatrixTransform pivot point definitoin? And how can I get the GEODE nodes world coordinate matrix to defining pivot point for the MatrixTransform node? Another question is, As you see from the structure of models, There is a 2 Matrix Transform (3DSPIVOTPOINT: Rotate and 3DSPIVOTPOINT: Translate pivotpoint to (world) origin). My planned structure, I will add one MatrixTrasform for every node. Is it comes with unexpected error or defectiveness in the future? Thanks to everyone :) Best Regards. Umit UZUN 2008/7/24 David Spilling [EMAIL PROTECTED]: If I understand your problem correctly, the general approach would be to compute the coordinate system matrix local to a group prior to a move (with computeWorldToLocal) - call it A - then to move the node, recompute the coordinate system in the new location - call this B - and apply the correct matrix - i.e. inverse(B) * A - to the immediate parent transform to get the correct positioning. In this way, when moving the object around in the scenegraph, it won't move in the world frame. In this case, the yaw group doesn't have a parent transform, so the initial matrix is the identity. The destination matrix will be the transform of planetary's MatrixTransform node, so you will need to apply the inverse of this matrix to your yaw specific MatrixTransform. I can't help but think that you must be able to persuade your 3DS model to be in a much more useful structure - all this programmatic model hacking (although useful for understanding OSG) seems quite clumsy... Regards, David ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Running OSG application in Firefox
Hi Rahul, I have no idea about this operation but It is amazing think:) If you can get success please notify us. Good Luck. Umit UZUN 2008/7/24 Rahul Jain [EMAIL PROTECTED]: Hi all , I want to write a plugin so that i can embed my OSG application in Firefox browser. Have any one tried this before ? Please suggest me some pointers to start with . cheers RJ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] how to release loaded model
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get());
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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Re: [osg-users] Running OSG application in Firefox
This was mentioned a while ago, search the forum for Problems with osgViewer and ActiveX, there was a chap that was trying to do it in IE so I presume you could get some relevant info from him. Regards, Kim. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rahul Jain Sent: 24 July 2008 10:21 To: OpenSceneGraph Users Subject: [osg-users] Running OSG application in Firefox Hi all , I want to write a plugin so that i can embed my OSG application in Firefox browser. Have any one tried this before ? Please suggest me some pointers to start with . cheers RJ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g* To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html *___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Robert: I figured it out :-) (was: Is it possible to know when the node-graph is 'dirty'?)
Hi Robert :-D
Thanx a lot for pointing in the right direction!!!
I can now enforce render-bin 10 to be rendered twice each frame with the needed
stateset changes. No node-mask stuff is needed. This is a completely
stand-alone fix :-)
This is what I did:
Camera is set up with a callback:
camera.setPreDrawCallback( new MyCallback() );
The callback struct's operator () looks like this:
virtual void operator () (osg::RenderInfo renderInfo) const
{
osg::Camera* camera = renderInfo.getCurrentCamera();
if( !camera )
{
return;
}
osgViewer::Renderer* renderer = dynamic_castosgViewer::Renderer*(
camera-getRenderer() );
if( !renderer )
{
return;
}
// HACK: This loop should not be here...
// Need to figure out which scene-view that is used (0 or 1).
// Renderer::draw() does it this way: sceneView =
_drawQueue.takeFront()
// _drawQueue is protected and not accessible through class
methods.
// This hack means we do the job below twice each frame.
//
for( int i=0; i2; i++ )
{
osgUtil::SceneView* sceneView = renderer-getSceneView( i );
if( !sceneView )
{
return;
}
osgUtil::RenderStage* renderStage = sceneView-getRenderStage();
if( !renderStage )
{
return;
}
osgUtil::RenderBin::RenderBinList binList =
renderStage-getRenderBinList();
if( binList.find(10) != binList.end() )
{
// Clone bin 10
osgUtil::RenderBin* clonedBin = new osgUtil::RenderBin(
*(binList[10].get()) );
// Clone the stateset
// TODO: Need to check that getStateSet does not return NULL.
osg::StateSet* stateSet = new osg::StateSet(
*(clonedBin-getStateSet()) );
// Ensure the cloned stateset is used in the cloned bin
clonedBin-setStateSet( stateSet );
// Cloned bin shall not write to the depth-buffer
stateSet-setMode( GL_DEPTH_TEST, osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE );
stateSet-setAttributeAndModes( new
osg::Depth(osg::Depth::LESS, 0.0, 1.0, false), osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE );
// Ensure cloned bin is rendered before bin 10.
binList[9] = clonedBin;
}
}
}
I am not sure how to solve the 0..1 loop marked by // HACK: in the source. Do
you know how I can know what SceneView that is used?
Do you see any other problems with this code?
Regards,
Viggo
Date: Wed, 23 Jul 2008 15:01:50 +0100 From: [EMAIL PROTECTED] To:
osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Is it possible
to know when the node-graph is 'dirty'? 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 require are built for
you. One one for instance would be to post process the RenderStage and its
contents after the CullVisitor has filled it in. Robert.
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Re: [osg-users] OSG 2.4 and GCC 4.3
Hi Will, Could you try out the svn trunk or one of the 2.5.5 release, as this will have the most compile fixes in it. We'll be releasing the stable 2.6 very soon, so what is in SVN is very close to stable state. If things don't compile perfectly under gcc 4.3 then please just send the errors to the list and we can try to resolve them all before the actual 2.6 release. Robert. On Wed, Jul 23, 2008 at 11:36 PM, Will Dicharry [EMAIL PROTECTED] wrote: Hi, We are currently using OSG 2.2 in our projects. I just moved to GCC 4.3 and am getting compile errors related to the stricter include rules that release implements. I have seen some traffic in the archives discussing a possible fix in the 2.3 development series. Did these fixes make it into 2.4? Thanks, Will ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Image::update?
Hi Hartmut, On Thu, Jul 24, 2008 at 3:10 AM, Hartmut Seichter [EMAIL PROTECTED] wrote: I just realized the introduction of osg::Image::update(osg::NodeVisitor*) which is awsome (kindof - for now it just breaks the whole thing), What do mean just breaks the whole thing? Could you be very specific. It shouldn't change anything for conventional Texture/Image usage. especially for osgART (http://osgart.org) ... I was wondering what your plans are with the implementation as the osgimagesequence is probably a work in progress osgimagesequence is currently work in progress, it should be wrapped up today though. I have non paged and paged ImageSequence functionality working, it just API refinement and better control of looping. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Slave Cameras projection matrices and aspect ratio
Hi Joseanibal, Could you provide a Producer .cfg that you are having problem with. Could you also please specify which versions of the OSG you've tried. Robert. On Thu, Jul 24, 2008 at 3:43 AM, Joseanibal Colon Ramos [EMAIL PROTECTED] wrote: Hi Anyone, I need to fix this ASAP. I am using OSG 2.4+ with old Producer Config files. OSG creates slave cameras for my multiple window configuration (one for each). The resulting settings are not quite like specified in my configuration file. Field of Views are mostly OK, but it is altering the aspect ratios of the slave cams and providing me with an image slightly off from how it should be. I've tried setting the Slave cams' projection matrix, (setProjectionMatrixAsPerspective) with particular aspect ratios etc, but the aspect ratio value is being overriden somewhere and adjusted a little bit. However, the Master cam's aspect ratio is correct. How do I correctly set the Slave cam's aspect ratios?? and Why are the Producer Configuration files not doing what they used to in OSG 1.2 ?? Anyone please let me know soon, THANKS! -JCOLON ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] how to release loaded model
Hi Su,
You shouldn't be called ref_ptr.release() in this context, you should
be just setting the ref_ptr to null.
ref_ptr::release() is a specialist helper method with does an
unref_noDelete on the referenced object - it deliberately doesn't
delete the object that it's unrefecing. This functionality is
required for functions that use ref_ptr locally but then have to
pass a C* point of the object.
Robert.
On Thu, Jul 24, 2008 at 10:45 AM, su hu [EMAIL PROTECTED] wrote:
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get()
);
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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Re: [osg-users] Robert: I figured it out :-) (was: Is it possible to know when the node-graph is 'dirty'?)
Hi Viggo,
I'd do this trick using a CullCallback on the topmost node of sub
graph that you won't to repeat rather than a pre draw callback. The
CullVisitor keeps track of the current RenderStage.
Robert.
On Thu, Jul 24, 2008 at 10:53 AM, Viggo Løvli [EMAIL PROTECTED] wrote:
Hi Robert :-D
Thanx a lot for pointing in the right direction!!!
I can now enforce render-bin 10 to be rendered twice each frame with the
needed stateset changes. No node-mask stuff is needed. This is a completely
stand-alone fix :-)
This is what I did:
Camera is set up with a callback:
camera.setPreDrawCallback( new MyCallback() );
The callback struct's operator () looks like this:
virtual void operator () (osg::RenderInfo renderInfo) const
{
osg::Camera* camera = renderInfo.getCurrentCamera();
if( !camera )
{
return;
}
osgViewer::Renderer* renderer = dynamic_castosgViewer::Renderer*(
camera-getRenderer() );
if( !renderer )
{
return;
}
// HACK: This loop should not be here...
// Need to figure out which scene-view that is used (0 or 1).
// Renderer::draw() does it this way: sceneView =
_drawQueue.takeFront()
// _drawQueue is protected and not accessible through class
methods.
// This hack means we do the job below twice each frame.
//
for( int i=0; i2; i++ )
{
osgUtil::SceneView* sceneView = renderer-getSceneView( i );
if( !sceneView )
{
return;
}
osgUtil::RenderStage* renderStage = sceneView-getRenderStage();
if( !renderStage )
{
return;
}
osgUtil::RenderBin::RenderBinList binList =
renderStage-getRenderBinList();
if( binList.find(10) != binList.end() )
{
// Clone bin 10
osgUtil::RenderBin* clonedBin = new osgUtil::RenderBin(
*(binList[10].get()) );
// Clone the stateset
// TODO: Need to check that getStateSet does not return
NULL.
osg::StateSet* stateSet = new osg::StateSet(
*(clonedBin-getStateSet()) );
// Ensure the cloned stateset is used in the cloned bin
clonedBin-setStateSet( stateSet );
// Cloned bin shall not write to the depth-buffer
stateSet-setMode( GL_DEPTH_TEST, osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE );
stateSet-setAttributeAndModes( new
osg::Depth(osg::Depth::LESS, 0.0, 1.0, false), osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE );
// Ensure cloned bin is rendered before bin 10.
binList[9] = clonedBin;
}
}
}
I am not sure how to solve the 0..1 loop marked by // HACK: in the source.
Do you know how I can know what SceneView that is used?
Do you see any other problems with this code?
Regards,
Viggo
Date: Wed, 23 Jul 2008 15:01:50 +0100
From: [EMAIL PROTECTED]
To: osg-users@lists.openscenegraph.org
Subject: Re: [osg-users] Is it possible to know when the node-graph is
'dirty'?
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 require are built for you. One one for instance
would be to post process the RenderStage and its contents after the
CullVisitor has filled it in.
Robert.
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Re: [osg-users] how to release loaded model
Hi Robert,
I set ref_ptr to null. It works well. Thanks a lot.
Best Regards,
Su Hu
2008/7/24 Robert Osfield [EMAIL PROTECTED]:
Hi Su,
You shouldn't be called ref_ptr.release() in this context, you should
be just setting the ref_ptr to null.
ref_ptr::release() is a specialist helper method with does an
unref_noDelete on the referenced object - it deliberately doesn't
delete the object that it's unrefecing. This functionality is
required for functions that use ref_ptr locally but then have to
pass a C* point of the object.
Robert.
On Thu, Jul 24, 2008 at 10:45 AM, su hu [EMAIL PROTECTED] wrote:
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get()
);
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other
group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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Re: [osg-users] how to release loaded model
Hi Ümit
Thanks for you suggestion. There are several scene models in our application
and they are large. So we have to release them when we start a new scene.
Thanks again.
Kind Regards,
Su Hu
2008/7/24 Ümit Uzun [EMAIL PROTECTED]:
Hi Su,
I think you shoul use Switch node to change the model. It is so easy and
useful. Look at the simple example.
2008/7/24 su hu [EMAIL PROTECTED]:
Hi all.
I need to release loaded model and reload other model. I did as follow:
osgViewer::ViewerViewer;
osg::ref_ptrosg::Group root = new osg::Group;
osg::ref_ptrosg::Group ModelRoot = new osg::Group;
osg::ref_ptrosg::Node loadedModel;
...
Viewer.setSceneData(root.get());
root-addChild(ModelRoot.get());
...
//in frame loop
.
switch(CMD)
{
case LOAD_SCENE:
{
loadedModel = osgDB::readNodeFile(CMD_SceneFileName);
if (loadedModel.valid())
{
ModelRoot-addChild(loadedModel.get());
}
break;
}
case RELEASE_SCENE:
{
if(ModelRoot.valid())
{
ModelRoot-removeChildren(0,ModelRoot-getNumChildren());
}
loadedModel.release();
break;
}
}
...
The loadedModel is added to ModelRoot and is not added to any other
group.
Models could be loaded and released. But I found used memory was not
reduced at all after RELEASE_SCENE was executed. After loading and
releasing several times, used memory is more than 1GB and program is
freezed. I want to know the reason and how to improve it.
Much appreciation to any reply.
Regards,
Su Hu
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Re: [osg-users] New feature : osgconv --plugins and --formats ReaderWriter::supported*() API
Hi All,
I have just added some further options into osgconv, --format and
--plugin, which allow you to query the details on a specific plugin
i.e.
osgconv --format obj
Will report:
Plugin osgPlugins-2.5.6/osgdb_obj.so
{
ReaderWriter : Wavefront OBJ Reader
{
extensions : .objAlias Wavefront OBJ format
options: noRotation Do not do the default
rotate about X axis
options: noTesselateLargePolygonsDo not do the default
tesselation of large polygons
options: noTriStripPolygons Do not do the default
tri stripping of polygons
}
}
Tabbing doesn't look so good in email client... better in the console ;-)
Robert.
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Re: [osg-users] Robert: I figured it out :-) (was: Is it possible to know when the node-graph is 'dirty'?)
Hi Robert,
I followed your advice added the code into the traverse function of my root
node.
Much of the code could now be removed, and I got rid of the 0..1 loop-hack
that I had to do earlier.
I think the new code looks very good. Do you see anything you would do
differently?
The new code looks like this:
void MyRootNodeClass::traverse( osg::NodeVisitor nv )
{
osg::Group::traverse( nv );
// Clone render-bin 10 if this is a cull visitor
if( nv.getVisitorType() == osg::NodeVisitor::CULL_VISITOR )
{
osgUtil::CullVisitor* cv = dynamic_castosgUtil::CullVisitor*( nv );
if( cv )
{
// Act if we have a RenderStage pointer
if( osgUtil::RenderStage* renderStage = cv-getRenderStage() )
{
// Get the render-bin list
osgUtil::RenderBin::RenderBinList binList =
renderStage-getRenderBinList();
if( binList.find(10) != binList.end() )
{
// Clone bin 10
osgUtil::RenderBin* clonedBin = new osgUtil::RenderBin(
*(binList[10].get()) );
// Clone the state-set
osg::StateSet* originalStateSet = clonedBin-getStateSet();
osg::StateSet* stateSet = (originalStateSet) ? new
osg::StateSet( *(originalStateSet) ) : new osg::StateSet();
// Ensure the cloned state-set is used in the cloned bin
clonedBin-setStateSet( stateSet );
// Cloned bin shall not write to the depth-buffer
stateSet-setMode( GL_DEPTH_TEST, osg::StateAttribute::ON
| osg::StateAttribute::OVERRIDE );
stateSet-setAttributeAndModes( new
osg::Depth(osg::Depth::LESS, 0.0, 1.0, false), osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE );
// Ensure cloned bin is rendered before bin 10.
binList[9] = clonedBin;
}
}
}
}
}
Regards,
Viggo Date: Thu, 24 Jul 2008 11:19:21 +0100 From: [EMAIL PROTECTED] To:
osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Robert: I figured
it out :-) (was: Is it possible to know when the node-graph is 'dirty'?) Hi
Viggo, I'd do this trick using a CullCallback on the topmost node of sub
graph that you won't to repeat rather than a pre draw callback. The
CullVisitor keeps track of the current RenderStage. Robert.
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[osg-users] Render to texture and ClearColor
Hi i´m currently rendering to a texture using a slave camera my problem is that i can´t set the clear color to alpha. Each time the slave camera renders a new frame i get a nice blue background instead of the transparent background i´m looking for i´ve tried with values of 0.0, 0.5 add 1.0 for alpha camera-setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); camera-setClearColor(osg::Vec4(0.0f,0.0f,1.0f,0.0f)); camera-setColorMask(true, true, true, true); i´ve created the texture2d attached to the camera from and osg::image with GL_RGBA and GL_UNSIGNED_BYTE formats and also i´ve tried by creating the texture2d with no parameters and setting later the texture-setInternalFormat(GL_RGBA) any idea of what i´m doing wrong??? thanks in advance _ Herramientas para combatir la crisis. MSN Dinero http://dinero.es.msn.com/___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Robert: I figured it out :-) (was: Is it possible to know when the node-graph is 'dirty'?)
Hi Viggo,
You could possible experiment with reuse the bin rather than cloning
it. Inserting a two bins for bin 9 and 10, then have the original
transparent bin nested within them. I can't recall the exact details
but I think I've tried a trick like this in the past. This would also
allow you to reuse a fixed StateSet on every frame rather than
creating one.
Robert.
On Thu, Jul 24, 2008 at 12:41 PM, Viggo Løvli [EMAIL PROTECTED] wrote:
Hi Robert,
I followed your advice added the code into the traverse function of my root
node.
Much of the code could now be removed, and I got rid of the 0..1
loop-hack that I had to do earlier.
I think the new code looks very good. Do you see anything you would do
differently?
The new code looks like this:
void MyRootNodeClass::traverse( osg::NodeVisitor nv )
{
osg::Group::traverse( nv );
// Clone render-bin 10 if this is a cull visitor
if( nv.getVisitorType() == osg::NodeVisitor::CULL_VISITOR )
{
osgUtil::CullVisitor* cv = dynamic_castosgUtil::CullVisitor*( nv
);
if( cv )
{
// Act if we have a RenderStage pointer
if( osgUtil::RenderStage* renderStage = cv-getRenderStage() )
{
// Get the render-bin list
osgUtil::RenderBin::RenderBinList binList =
renderStage-getRenderBinList();
if( binList.find(10) != binList.end() )
{
// Clone bin 10
osgUtil::RenderBin* clonedBin = new osgUtil::RenderBin(
*(binList[10].get()) );
// Clone the state-set
osg::StateSet* originalStateSet =
clonedBin-getStateSet();
osg::StateSet* stateSet = (originalStateSet) ? new
osg::StateSet( *(originalStateSet) ) : new osg::StateSet();
// Ensure the cloned state-set is used in the cloned bin
clonedBin-setStateSet( stateSet );
// Cloned bin shall not write to the depth-buffer
stateSet-setMode( GL_DEPTH_TEST,
osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
stateSet-setAttributeAndModes( new
osg::Depth(osg::Depth::LESS, 0.0, 1.0, false), osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE );
// Ensure cloned bin is rendered before bin 10.
binList[9] = clonedBin;
}
}
}
}
}
Regards,
Viggo
Date: Thu, 24 Jul 2008 11:19:21 +0100
From: [EMAIL PROTECTED]
To: osg-users@lists.openscenegraph.org
Subject: Re: [osg-users] Robert: I figured it out :-) (was: Is it possible
to know when the node-graph is 'dirty'?)
Hi Viggo,
I'd do this trick using a CullCallback on the topmost node of sub
graph that you won't to repeat rather than a pre draw callback. The
CullVisitor keeps track of the current RenderStage.
Robert.
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Re: [osg-users] Render to texture and ClearColor
Dous you FBO have an alpha channel On Thu, Jul 24, 2008 at 12:42 PM, David _ [EMAIL PROTECTED] wrote: Hi i´m currently rendering to a texture using a slave camera my problem is that i can´t set the clear color to alpha. Each time the slave camera renders a new frame i get a nice blue background instead of the transparent background i´m looking for i´ve tried with values of 0.0, 0.5 add 1.0 for alpha camera-setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); camera-setClearColor(osg::Vec4(0.0f,0.0f,1.0f,0.0f)); camera-setColorMask(true, true, true, true); i´ve created the texture2d attached to the camera from and osg::image with GL_RGBA and GL_UNSIGNED_BYTE formats and also i´ve tried by creating the texture2d with no parameters and setting later the texture-setInternalFormat(GL_RGBA) any idea of what i´m doing wrong??? thanks in advance ¿Quieres los emoticonos y guiños más divertidos? Descárgate Internet Explorer 7, y consigue contenidos exclusivos cada semana. ¡Gratis! ¿Quieres los emoticonos y guiños más divertidos? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render to texture and ClearColor
ok, i solved it with this instruction camera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); don´t know what it exactly does, but it´s working now as i want it to. An explanation of what this isntruction do will be welcome thanks Date: Thu, 24 Jul 2008 12:53:07 +0100 From: [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Render to texture and ClearColor Dous you FBO have an alpha channel On Thu, Jul 24, 2008 at 12:42 PM, David _ [EMAIL PROTECTED] wrote: Hi i´m currently rendering to a texture using a slave camera my problem is that i can´t set the clear color to alpha. Each time the slave camera renders a new frame i get a nice blue background instead of the transparent background i´m looking for i´ve tried with values of 0.0, 0.5 add 1.0 for alpha camera-setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); camera-setClearColor(osg::Vec4(0.0f,0.0f,1.0f,0.0f)); camera-setColorMask(true, true, true, true); i´ve created the texture2d attached to the camera from and osg::image with GL_RGBA and GL_UNSIGNED_BYTE formats and also i´ve tried by creating the texture2d with no parameters and setting later the texture-setInternalFormat(GL_RGBA) any idea of what i´m doing wrong??? thanks in advance ¿Quieres los emoticonos y guiños más divertidos? Descárgate Internet Explorer 7, y consigue contenidos exclusivos cada semana. ¡Gratis! ¿Quieres los emoticonos y guiños más divertidos? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _ Hazte tu propia televisión a la carta. Música, noticias, estrenos, cine, humor y viajes en MSN Vídeo http://video.msn.com/?mkt=es-es___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render to texture and ClearColor
i guess i spoke too fast. I get transparency no, but it´s not exactly what i want how do i know what kind of FBO i´m using??? From: [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Date: Thu, 24 Jul 2008 14:00:56 +0200 Subject: Re: [osg-users] Render to texture and ClearColor ok, i solved it with this instruction camera-setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); don´t know what it exactly does, but it´s working now as i want it to. An explanation of what this isntruction do will be welcome thanks Date: Thu, 24 Jul 2008 12:53:07 +0100 From: [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Render to texture and ClearColor Dous you FBO have an alpha channel On Thu, Jul 24, 2008 at 12:42 PM, David _ [EMAIL PROTECTED] wrote: Hi i´m currently rendering to a texture using a slave camera my problem is that i can´t set the clear color to alpha. Each time the slave camera renders a new frame i get a nice blue background instead of the transparent background i´m looking for i´ve tried with values of 0.0, 0.5 add 1.0 for alpha camera-setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); camera-setClearColor(osg::Vec4(0.0f,0.0f,1.0f,0.0f)); camera-setColorMask(true, true, true, true); i´ve created the texture2d attached to the camera from and osg::image with GL_RGBA and GL_UNSIGNED_BYTE formats and also i´ve tried by creating the texture2d with no parameters and setting later the texture-setInternalFormat(GL_RGBA) any idea of what i´m doing wrong??? thanks in advance ¿Quieres los emoticonos y guiños más divertidos? Descárgate Internet Explorer 7, y consigue contenidos exclusivos cada semana. ¡Gratis! ¿Quieres los emoticonos y guiños más divertidos? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ¡Atrévete con Abecedario, el juego del momento! Invita a tus contactos de Messenger y demuéstrales lo que sabes demuéstrales lo que sabes _ Tu mejor plan para el fin de semana y toda la actualidad del mundo del corazón. Entra en MSN Entretenimiento http://entretenimiento.es.msn.com/___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Freetype Plugin not found
I have already read about cmakes problem when it comes to freetype, but I checked my osgPlugins-2.4.0 folder, there is a osg_freetyped.dll in it. Whilte trying to load a file, I get the Warning: Could not find plugin to read objects from file ... I recompiled osg_freetyped.dll and also a freetype.dll from 2.3.7 source, put that into output directory. Basically I can load png files, so the folders are found but not with freetype. I set OSG_NOTIFY_LEVEL to DEBUG but unfortunately didnt get more error messages :/ My suspicition is that there is something wrong rather with osg_freetyped.dll than with freetype.dll itself because if osg cannot locate the osg_x.dll I get the warning from above, but if the plugin itself is missing - eg. libpngd.dll I get an additional windows error which is here not present. Thanks ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] transparency becomes dark
Hi
I am trying to set the object transparency from 1.0 - 0.0 and vice versa;
but when I start changing the alpha of the material the object becomes dark.
I have changed the material parameters but without success; when I look in
the loaded model (for example cow.osg) for material, the material is always
null.
I have modified the osgviewer example and attached it.
Could s.o. give me a hint what I am doing wrong ?
Thanks
Dieter
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This application is open source and may be redistributed and/or modified
* freely and without restriction, both in commericial and non commericial
applications,
* as long as this copyright notice is maintained.
*
* This application is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include osgDB/ReadFile
#include osgUtil/Optimizer
#include osg/CoordinateSystemNode
#include osg/Switch
#include osgText/Text
#include osgViewer/Viewer
#include osgViewer/ViewerEventHandlers
#include osgGA/TrackballManipulator
#include osgGA/FlightManipulator
#include osgGA/DriveManipulator
#include osgGA/KeySwitchMatrixManipulator
#include osgGA/StateSetManipulator
#include osgGA/AnimationPathManipulator
#include osgGA/TerrainManipulator
#include osg/Material
#include osg/BlendFunc
#include iostream
int doAlpha;
float currentAlpha;
osg::ref_ptrosg::Node loadedModel;
void setAlpha()
{
if ( doAlpha == 1)
currentAlpha +=.01;
if ( doAlpha == 2)
currentAlpha -=.01;
if (loadedModel.valid())
{
osg::StateSet *ss = loadedModel -getOrCreateStateSet();
osg::Material* blendMaterial = 0;
blendMaterial =
(osg::Material*)(ss-getAttribute(osg::StateAttribute::MATERIAL));
if(blendMaterial ==0)
{
blendMaterial = new osg::Material();
}
if (doAlpha == 1)
{
if (currentAlpha 1.0)
{
blendMaterial-setAlpha(
osg::Material::FRONT_AND_BACK, currentAlpha);
}
else
{
blendMaterial-setAlpha(
osg::Material::FRONT_AND_BACK, 1.0);
doAlpha = 0;
}
}
else if (doAlpha == 2)
{
if (currentAlpha .0)
{
blendMaterial-setAlpha(
osg::Material::FRONT_AND_BACK, currentAlpha);
}
else
{
blendMaterial-setAlpha(
osg::Material::FRONT_AND_BACK, 0.0);
doAlpha = 0;
}
}
osg::BlendFunc *bl = new osg::BlendFunc();
bl-setFunction(osg::BlendFunc::SRC_ALPHA,
osg::BlendFunc::ONE_MINUS_SRC_ALPHA);
ss-setAttributeAndModes(bl, osg::StateAttribute::ON
|osg::StateAttribute::OVERRIDE);
ss-setMode(GL_BLEND, osg::StateAttribute::ON
|osg::StateAttribute::OVERRIDE);
ss-setAttributeAndModes(blendMaterial ,osg::StateAttribute::ON
|osg::StateAttribute::OVERRIDE);
ss-setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
loadedModel-setStateSet( ss ); // not neccessary
if (currentAlpha =1 )
{
doAlpha = 0;
ss-setMode(GL_BLEND, osg::StateAttribute::OFF);
ss-setAttributeAndModes(blendMaterial,osg::StateAttribute::OFF);
}
if (currentAlpha 0)
doAlpha = 1;
}
}
int main(int argc, char** argv)
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(argc,argv);
arguments.getApplicationUsage()-setApplicationName(arguments.getApplicationName());
Re: [osg-users] Freetype Plugin not found
I got the following output for the freetype dll, which is somehow confusing: '05. Text.exe': Loaded 'osgPlugins-2.4.0\osgdb_freetyped.dll', Symbols loaded. LDR: LdrpWalkImportDescriptor() failed to probe osgPlugins-2.4.0\osgdb_freetyped.dll for its manifest, ntstatus 0xc0150002 '05. Text.exe': Unloaded osgPlugins-2.4.0\osgdb_freetyped.dll' Whats that? a dynamic linked library without an manifest? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Freetype Plugin not found
Are you using Visual Studio 2005 ? You can get this type message if you have VS2005 installed but not the VS2005 SP! patch -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ariasgore Sent: Thursday, July 24, 2008 8:42 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Freetype Plugin not found I got the following output for the freetype dll, which is somehow confusing: '05. Text.exe': Loaded 'osgPlugins-2.4.0\osgdb_freetyped.dll', Symbols loaded. LDR: LdrpWalkImportDescriptor() failed to probe osgPlugins-2.4.0\osgdb_freetyped.dll for its manifest, ntstatus 0xc0150002 '05. Text.exe': Unloaded osgPlugins-2.4.0\osgdb_freetyped.dll' Whats that? a dynamic linked library without an manifest? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Freetype Plugin not found
Also make sure in your projects that the manifests are being embedded the doe need to be imbedded -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ariasgore Sent: Thursday, July 24, 2008 8:42 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Freetype Plugin not found I got the following output for the freetype dll, which is somehow confusing: '05. Text.exe': Loaded 'osgPlugins-2.4.0\osgdb_freetyped.dll', Symbols loaded. LDR: LdrpWalkImportDescriptor() failed to probe osgPlugins-2.4.0\osgdb_freetyped.dll for its manifest, ntstatus 0xc0150002 '05. Text.exe': Unloaded osgPlugins-2.4.0\osgdb_freetyped.dll' Whats that? a dynamic linked library without an manifest? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] how to release loaded model
Hello Robert, ref_ptr::release() is a specialist helper method with does an unref_noDelete on the referenced object - it deliberately doesn't delete the object that it's unrefecing. This functionality is required for functions that use ref_ptr locally but then have to pass a C* point of the object. I have seen this confusion before from people used to Win32 programming... In MFC (I believe), calling release() on something means you don't want to use it anymore, and you want it to release its resources (kind of like calling delete on a pointer, but it's a C API so there are no destructors, hence the release() function). So it means exactly the opposite of what it means in OSG. Kind of ironic, but perhaps that just means that people need to read the API documentation a bit before using a method in their code, because it might not do what they assume it does. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Freetype Plugin not found
Hello, I am always using VS 2008 (which is 9.0) I have read about that problem, the manifest is included, everything is compiled on the same machine with the same VS Version. BUT I found a weird solution to this on this page - http://forums.msdn.microsoft.com/en-US/vcgeneral/thread/3f2869ca-2c07-49a8-a443-52720b10ea09/ I set the manifest ID to 1 (was 2) after compiling the dll and that worked! I actually do not understand why and am exploring this situation. -- From: Gordon Tomlinson [EMAIL PROTECTED] Sent: Thursday, July 24, 2008 2:49 PM To: 'OpenSceneGraph Users' osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Freetype Plugin not found Also make sure in your projects that the manifests are being embedded the doe need to be imbedded -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ariasgore Sent: Thursday, July 24, 2008 8:42 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Freetype Plugin not found I got the following output for the freetype dll, which is somehow confusing: '05. Text.exe': Loaded 'osgPlugins-2.4.0\osgdb_freetyped.dll', Symbols loaded. LDR: LdrpWalkImportDescriptor() failed to probe osgPlugins-2.4.0\osgdb_freetyped.dll for its manifest, ntstatus 0xc0150002 '05. Text.exe': Unloaded osgPlugins-2.4.0\osgdb_freetyped.dll' Whats that? a dynamic linked library without an manifest? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Robert: I figured it out :-) (was: Is it possible to know when the node-graph is 'dirty'?)
Hi Robert,
I have changed the code a bit.
Now I create my statset (_myPreCreatedStateSet) at class construction.
I no longer clone bin 10.
I now only do this inside the inner check:
if( binList.find(10) != binList.end() )
{
binList[9] = new osgUtil::RenderBin();
binList[9]-setStateSet( _myPreCreatedStateSet );
(binList[9]-getRenderBinList())[9] = binList[10];
}
The only thing that annoy me now is the call to new().
Creating one bin as a member variable in my class and using it instead of the
call to new cause the system to crash. Double buffering I guess.
So maybe I can fix this by having two RenderBin instances in my class, and use
them every other call?
But, I suspect that it may not be enough? Would I need two per cull call that
is ran per frame? Say that I in the future render with 4 different cameras and
cull the world 4 times. Would I then need 4*2 bin instances to use instead of
calling new()?
Regards,
Viggo
Date: Thu, 24 Jul 2008 12:52:06 +0100 From: [EMAIL PROTECTED] To:
osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Robert: I
figured it out :-) (was: Is it possible to know when the node-graph is
'dirty'?) Hi Viggo, You could possible experiment with reuse the bin
rather than cloning it. Inserting a two bins for bin 9 and 10, then have the
original transparent bin nested within them. I can't recall the exact
details but I think I've tried a trick like this in the past. This would
also allow you to reuse a fixed StateSet on every frame rather than
creating one. Robert.
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[osg-users] Shapefiles Coordinate System Conversions
Hello all, I am brand new to OSG and I am still wading through all the information and examples learning as much as I can. I am working on my latest exercise in which I am overylaying a shapefile onto a terrain database that I have. The shapefile consists of bodies of water (lakes) in California. I created the terrain database using osgdem and some DTED data that I have for a small portion of California. I know that the shapefile consists of lat, lon, height data ( thanks to osgconv ) and I wanted to convert those data to x,y,z coordinates in the coordinate system of the terrain. I did this by using a node visitor for the shapefile node after reading it in with readNodeFile. I accessed the ArrayData via the Geode instance and then looped through the data using the ellipsoid model from the terrain's coordinate system to convert the lat,long,height data. Then all I had to do was the overlay stuff and add it to the root node. Anyway, what I really want to know is if there is a better solution for converting the lat,long,height data or am I on track? Any existing examples or code snippets would be much appreciated. Thanks, Greg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] New feature : osgconv --plugins and --formatsReaderWriter::supported*() API
Hi Robert -- This change appears to have introduced a build problem on VS
2005...
PluginQuery.cpp
c:\osgdev\osg\applications\osgconv\pluginquery.cpp(149) : error C4716:
'osgDB::outputPluginDetails' : must return a value
Not sure whether you need this to return true or false, so I'll let you
submit the change.
Thanks, nice feature.
-Paul
Hi All,
I have just added some further options into osgconv, --format
and --plugin, which allow you to query the details on a
specific plugin i.e.
osgconv --format obj
Will report:
Plugin osgPlugins-2.5.6/osgdb_obj.so
{
ReaderWriter : Wavefront OBJ Reader
{
extensions : .objAlias
Wavefront OBJ format
options: noRotation Do not do the default
rotate about X axis
options: noTesselateLargePolygonsDo not do the default
tesselation of large polygons
options: noTriStripPolygons Do not do the default
tri stripping of polygons
}
}
Tabbing doesn't look so good in email client... better in the
console ;-)
Robert.
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Re: [osg-users] Robert: I figured it out :-) (was: Is it possible to know when the node-graph is 'dirty'?)
On Thu, Jul 24, 2008 at 3:08 PM, Viggo Løvli [EMAIL PROTECTED] wrote: The only thing that annoy me now is the call to new(). Creating one bin as a member variable in my class and using it instead of the call to new cause the system to crash. Double buffering I guess. So maybe I can fix this by having two RenderBin instances in my class, and use them every other call? But, I suspect that it may not be enough? Would I need two per cull call that is ran per frame? Say that I in the future render with 4 different cameras and cull the world 4 times. Would I then need 4*2 bin instances to use instead of calling new()? The OSG's rendering backend is both very dynamic (created on demand on each frame) and flexible (it can be a huge range of bin configurations, potentially different on each frame) and the threading and multiple graphics context rendering are all thrown into this mix. This makes reuse of data something you have to be very careful about, in your case you'd either need to create on each new frame or multi-buffer. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] problems with checking for OpenGL extensions
Hi, I've got another problem with using OpenGL-code in connection with OpenSceneGraph. I have an OpenGL-API that I use in my OSG-application. This API won't work when there are some required OpenGl-extensions missing. Instead it will list the missing extensions. In my application it does just that because it cannot find some of them. Strange thing is that when running the example-programs that came with the API outside of my program everything works just fine. Also according to OpenGL Extension Viewer my hardware should support these features. I read that there is also an OSG-function to test on extensions but since I have no influence on the API I have to find out why its internal checks fail when used in my application. Does anyone have an idea why these problems possibly occur and what I have to change or do about it to make it work? I thought the provided extensions just depend on the graphics driver... is this wrong? Could there be some conflicts with the libraries I'm using? If this already has been answered somewhere I'm sorry. I read through some posts concerning extensions but nothing seemed to fit to my problem. Thanks in advance, Steffen ___ Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 30 Tage kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=00 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Shapefiles Coordinate System Conversions
Hi Greg, It sounds like you are on track. At tip for geospatial data - With the .shp plugin in SVN head, and 2.5.x dev series the plugin supports loaded the geometry as doubles rather than the default of floats. You can enable this by using the ReaderWriter::Options object passed in with your readNodeFile call, on this options object you set the options string via options-setOptionString(double); Loading the vertex data as double helps with precision tremendously, but for rendering it totally kills performance as the graphics hard can't handle doubles, so the OpenGL driver has to convert to floats on each time you render the vertex data, so load the data, project into the appropriate coordinates system, then place with a local orign with a MatrixTransform above it to place it in its original place, and then convert the vertex data to floats. This way you can maintain a good balance between precision and performance. Robert. On Thu, Jul 24, 2008 at 3:19 PM, Greg Myers [EMAIL PROTECTED] wrote: Hello all, I am brand new to OSG and I am still wading through all the information and examples learning as much as I can. I am working on my latest exercise in which I am overylaying a shapefile onto a terrain database that I have. The shapefile consists of bodies of water (lakes) in California. I created the terrain database using osgdem and some DTED data that I have for a small portion of California. I know that the shapefile consists of lat, lon, height data ( thanks to osgconv ) and I wanted to convert those data to x,y,z coordinates in the coordinate system of the terrain. I did this by using a node visitor for the shapefile node after reading it in with readNodeFile. I accessed the ArrayData via the Geode instance and then looped through the data using the ellipsoid model from the terrain's coordinate system to convert the lat,long,height data. Then all I had to do was the overlay stuff and add it to the root node. Anyway, what I really want to know is if there is a better solution for converting the lat,long,height data or am I on track? Any existing examples or code snippets would be much appreciated. Thanks, Greg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] New feature : osgconv --plugins and --formatsReaderWriter::supported*() API
Thanks for the note, I've added in both a return true and a return false ;-)
On Thu, Jul 24, 2008 at 3:27 PM, Paul Martz [EMAIL PROTECTED] wrote:
Hi Robert -- This change appears to have introduced a build problem on VS
2005...
PluginQuery.cpp
c:\osgdev\osg\applications\osgconv\pluginquery.cpp(149) : error C4716:
'osgDB::outputPluginDetails' : must return a value
Not sure whether you need this to return true or false, so I'll let you
submit the change.
Thanks, nice feature.
-Paul
Hi All,
I have just added some further options into osgconv, --format
and --plugin, which allow you to query the details on a
specific plugin i.e.
osgconv --format obj
Will report:
Plugin osgPlugins-2.5.6/osgdb_obj.so
{
ReaderWriter : Wavefront OBJ Reader
{
extensions : .objAlias
Wavefront OBJ format
options: noRotation Do not do the default
rotate about X axis
options: noTesselateLargePolygonsDo not do the default
tesselation of large polygons
options: noTriStripPolygons Do not do the default
tri stripping of polygons
}
}
Tabbing doesn't look so good in email client... better in the
console ;-)
Robert.
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Re: [osg-users] problems with checking for OpenGL extensions
Hi Steffen, To find out what extensions the OSG is seeing enable verbose debugging via: export OSG_NOTIFY_LEVEL=DEBUG osgviewer cow.osg Then it'll list, among lots of other stuff, the extensions supported. Robert. On Thu, Jul 24, 2008 at 5:59 PM, Steffen Kim [EMAIL PROTECTED] wrote: Hi, I've got another problem with using OpenGL-code in connection with OpenSceneGraph. I have an OpenGL-API that I use in my OSG-application. This API won't work when there are some required OpenGl-extensions missing. Instead it will list the missing extensions. In my application it does just that because it cannot find some of them. Strange thing is that when running the example-programs that came with the API outside of my program everything works just fine. Also according to OpenGL Extension Viewer my hardware should support these features. I read that there is also an OSG-function to test on extensions but since I have no influence on the API I have to find out why its internal checks fail when used in my application. Does anyone have an idea why these problems possibly occur and what I have to change or do about it to make it work? I thought the provided extensions just depend on the graphics driver... is this wrong? Could there be some conflicts with the libraries I'm using? If this already has been answered somewhere I'm sorry. I read through some posts concerning extensions but nothing seemed to fit to my problem. Thanks in advance, Steffen ___ Jetzt neu! Schützen Sie Ihren PC mit McAfee und WEB.DE. 30 Tage kostenlos testen. http://www.pc-sicherheit.web.de/startseite/?mc=00 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Default vertex shader
Hello Jean-Sebastien, I followed your advice. Everything works well. Thanks a lot for clarifying those things and for your help. Denis On Jul 23, 2008, at 4:58 AM, Jean-Sébastien Guay wrote: Hello Denis, When I added vertex shader, the object was not shadowed properly (with the same exact fragment shader). I suspect I'm doing something wrong with the texture coordinates in a vertex shader. I looked in ShadowMap.cpp, it has only fragment shaders. Do you know where can I find default vertex shader? When you start using a shader for one part of the pipeline (vertex or fragment) you need to do everything that that part of the pipeline used to do (and which is needed by your rendering). In the case of shadows, you'll notice that the code in ShadowMap.cpp adds an osg::TexGen that calculates some texture coordinates for texture unit 1. But that's the fixed pipeline, so you will need to calculate texture coordinates for unit 1 as glTexGen would in your vertex shader now that it has replaced the fixed-function vertex processing. Something like this should work, though you should probably have finer control over when these are calculated or not: gl_TexCoord[1].s = dot( ecPosition, gl_EyePlaneS[1] ); gl_TexCoord[1].t = dot( ecPosition, gl_EyePlaneT[1] ); gl_TexCoord[1].p = dot( ecPosition, gl_EyePlaneR[1] ); gl_TexCoord[1].q = dot( ecPosition, gl_EyePlaneQ[1] ); Note that ecPosition is: vec4 ecPosition = gl_ModelViewMatrix * gl_Vertex; I also assume you're transforming your texture coordinates for texture unit 0 properly: gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0; Just assigning gl_MultiTexCoord0 to gl_TexCoord[0] will work until you try to use a texture matrix (osg::TexMat)... I highly recommend you get/read the Orange Book, as this is all given there. You can also download the ShaderGen program from 3DLabs (now hosted on http://mew.cx/glsl since 3DLabs removed it from their site) which can generate shaders that emulate the fixed pipeline. Note that for speed, you should probably only use the features you need in your shaders, so I am not recommending that you generate a shader that does *all* of what the fixed pipeline would do... Just use what ShaderGen produces as a guide. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users- openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Default vertex shader
Hi Denis, I followed your advice. Everything works well. Thanks a lot for clarifying those things and for your help. Glad I could help, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Slave Cameras projection matrices and aspect ratio
Thanks Robert,
Here is the Producer config file I am using:
***
Camera Camera-1
{
RenderSurface Window-1
{
Visual { SetSimple }
Screen 0;
WindowRect 0 30 426 341;
Border on;
InputRectangle -1.0 1.0 -1.0 1.0;
}
Offset {
Rotate 42.4 0 1 0;
}
}
Camera Camera-2
{
RenderSurface Window-2
{
Visual { SetSimple }
Screen 0;
WindowRect 426 30 426 341;
Border on;
InputRectangle -1.0 1.0 -1.0 1.0;
}
Offset {
Rotate 0.0 0 1 0;
}
}
Camera Camera-3
{
RenderSurface Window-3
{
Visual { SetSimple }
Screen 0;
WindowRect 852 30 426 341;
Border on;
InputRectangle -1.0 1.0 -1.0 1.0;
}
Offset {
Rotate -42.4 0 1 0;
}
}
InputArea
{
RenderSurface Window-1 ;
RenderSurface Window-2 ;
RenderSurface Window-3 ;
}
***
I have tested and compared it with OSG 2.4 and OSG 1.2 with (very)
slightly different results. I need the results to be exactly the same as
in OSG 1.2.
My understanding is that the InputArea is no longer required, but is is
still there for backwards compatibility with OSG 1.2 . For each
RenderSurface block I used to have a Lens configuration block like this
one:
Lens {
Perspective 42.4 45.0 1.0 100.0;
}
but I no longer use it because I set the parameters in my code as:
vwr.getCamera()-setProjectionMatrixAsPerspective(VerticalFOV, AspectRatio,
NearClip, FarClip); //for the master cam.
I've tried doing it for each of the Slave cams as well:
vwr.getSlave(int i)._camera-setProjectionMat. (same thing) . but it
doesn't change anything.
In this example:
AspectRatio = 1.33
VerticalFOV = 42.4/AspectRatio
NearClip = doesn't matter right now
FarClip = doesn't matter right now
Whe I run my program (version OSG 2.4) I get the following runtime values:
Master cam: (fov, aspect, near, far)31.807951987997, 1.333, 0.02, 199.
Slave cam # 0 (fov, aspect, near, far): 31.8079530956935,
1.31249230769231, 305.702400933255, 70223.0343790709
Slave cam # 1 (fov, aspect, near, far): 31.8079530956935,
1.31249230769231, 443.807876894962, 43394.6435810508
Slave cam # 2 (fov, aspect, near, far): 31.8079530956935,
1.31249230769231, 292.024441391996, 54427.4475917436
You may ignore the Near/Far values. You can notice how the slave cams
manipulated the aspect ratio slightly. The VerticalFOV seems right.
When I run OSG 1.2 I get this:
(no master cam concept)
camera 0 FOV(h,v) = 42.4,31.808
aspect_ratio : 1.36129
camera 1 FOV(h,v) = 42.4,31.808
aspect_ratio : 1.36129
camera 2 FOV(h,v) = 42.4,31.808
aspect_ratio : 1.36129
I don't know how the aspect ration became that value either, because the
aspect ratio should have been forced to 1.33. Anyways this works fine.
I'd like to get the OSG 1.2 results, although none of these numbers quite
make sense to me, and the corresponding values of each version are very
close. I'll also provide the projection matrices which are a bit off as
well:
OSG2.4:
Slave cam 0:
projectionMatrix : {
2.67399874028772 0 0 0
0 3.50960277740655 0 0
0 0 -1.00874468153415 -1
0 0 -614.078072006898 0
}
Slave cam 1:
projectionMatrix : {
2.67399874028772 0 0 0
0 3.50960277740655 0 0
0 0 -1.02066585525608 -1
0 0 -896.787423135345 0
}
Slave cam2:
projectionMatrix : {
2.67399874028772 0 0 0
0 3.50960277740655 0 0
0 0 -1.01078866385069 -1
0 0 -587.199436318357 0
}
What they should be: (OSG 1.2):
Cam 0:
2.57815,0,0,0
0,3.5096,0,0
0,0,-1,-1
0,0,-20,0
Cam 1:
2.57815,0,0,0
0,3.5096,0,0
0,0,-1,-1
0,0,-20,0
Cam2:
2.57815,0,0,0
0,3.5096,0,0
0,0,-1,-1
0,0,-20,0
(all the same). In OSG 2.4, if I hard-code my Master cam's
projectionMatrix to be like the one printed out in OSG 1.2 I get the good
image result.
The big question is: What parameter is off? Why? and How do I fix it?
Any help with anything here mentioned will be VERY welcomed!!
Thanks,
-Jose
On Thu, July 24, 2008 3:12 am, Robert Osfield wrote:
Hi Joseanibal,
Could you provide a Producer .cfg that you are having problem with.
Could you also please specify which versions of the OSG you've tried.
Robert.
On Thu, Jul 24, 2008 at 3:43 AM, Joseanibal Colon Ramos
[EMAIL PROTECTED] wrote:
Hi Anyone,
I need to fix this ASAP. I am using OSG 2.4+ with old Producer Config
files. OSG creates slave cameras for my multiple window configuration
(one
for each). The resulting settings are not quite like specified in my
configuration file. Field of Views are mostly OK, but it is altering the
aspect ratios of the slave cams and providing me with an image slightly
off from how it should be. I've tried setting the Slave
Re: [osg-users] Shapefiles Coordinate System Conversions
Thanks for the tips Robert. I'll give them a shot. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Thursday, July 24, 2008 10:03 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Shapefiles Coordinate System Conversions Hi Greg, It sounds like you are on track. At tip for geospatial data - With the .shp plugin in SVN head, and 2.5.x dev series the plugin supports loaded the geometry as doubles rather than the default of floats. You can enable this by using the ReaderWriter::Options object passed in with your readNodeFile call, on this options object you set the options string via options-setOptionString(double); Loading the vertex data as double helps with precision tremendously, but for rendering it totally kills performance as the graphics hard can't handle doubles, so the OpenGL driver has to convert to floats on each time you render the vertex data, so load the data, project into the appropriate coordinates system, then place with a local orign with a MatrixTransform above it to place it in its original place, and then convert the vertex data to floats. This way you can maintain a good balance between precision and performance. Robert. On Thu, Jul 24, 2008 at 3:19 PM, Greg Myers [EMAIL PROTECTED] wrote: Hello all, I am brand new to OSG and I am still wading through all the information and examples learning as much as I can. I am working on my latest exercise in which I am overylaying a shapefile onto a terrain database that I have. The shapefile consists of bodies of water (lakes) in California. I created the terrain database using osgdem and some DTED data that I have for a small portion of California. I know that the shapefile consists of lat, lon, height data ( thanks to osgconv ) and I wanted to convert those data to x,y,z coordinates in the coordinate system of the terrain. I did this by using a node visitor for the shapefile node after reading it in with readNodeFile. I accessed the ArrayData via the Geode instance and then looped through the data using the ellipsoid model from the terrain's coordinate system to convert the lat,long,height data. Then all I had to do was the overlay stuff and add it to the root node. Anyway, what I really want to know is if there is a better solution for converting the lat,long,height data or am I on track? Any existing examples or code snippets would be much appreciated. Thanks, Greg ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] help me!
hi!Thank you for your answer! I try it as you say, but not right also,i think because Texture Coord output of osgExp is not right,they are between 0 and 1,it should be 0 to 3. i change it , it is OK!, so it is the really reason. I must change osgExp scource code,and recompile it? how to do it? From: [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Date: Wed, 23 Jul 2008 09:57:33 +0200 Subject: Re: [osg-users] help me! Hi, El Miércoles 23 Julio 2008ES 08:48:19 monkeymonkey escribió: hi! i use Texture UV repeat 3.0 in 3dsMax8,but when i output it to ive,then use osgViewer to look,texture is not right. it seem that repeat is not work! why? osgExp is not surport Texture UV repeat? how to make it? Convert your .ive to .osg with osgconv, then look for the wrap parameter in the file like wrap_s,t,... REPEAT If there is something other word than REPEAT, change it. Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _ MSN史诗巨片横空出世，精彩抢先看！ http://im.msn.cn/___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
