FGFS-4.1/OpenSceneGraph
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Added handling of CameraNode into PickVisitor in src/osgProducer/Viewer.cpp. This

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is unlikely to be the final solution, but does at least fix part of the problem of handling
picking HUD's underneath CameraNodes.
This commit is contained in:
Robert Osfield
2005-11-02 15:23:54 +00:00
parent 7e858b15f1
commit b0df518d11
2 changed files with 33 additions and 19 deletions
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28
examples/osgpick/osgpick.cpp
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@@ -25,6 +25,7 @@
#include <osg/Depth>
#include <osg/Projection>
#include <osg/MatrixTransform>
#include <osg/CameraNode>
#include <osg/io_utils>
#include <osgText/Text>
@@ -108,18 +109,19 @@ void PickHandler::pick(const osgGA::GUIEventAdapter& ea)
}
osg::Node* createHUD(osgText::Text* updateText)
{ // create the hud. derived from osgHud.cpp
{
// create the hud. derived from osgHud.cpp
// adds a set of quads, each in a separate Geode - which can be picked individually
// eg to be used as a menuing/help system!
// Can pick texts too!
osg::MatrixTransform* modelview_abs = new osg::MatrixTransform;
modelview_abs->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
modelview_abs->setMatrix(osg::Matrix::identity());
osg::Projection* projection = new osg::Projection;
projection->setMatrix(osg::Matrix::ortho2D(0,1280,0,1024));
projection->addChild(modelview_abs);
osg::CameraNode* hudCamera = new osg::CameraNode;
hudCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
hudCamera->setProjectionMatrixAsOrtho2D(0,1280,0,1024);
hudCamera->setViewMatrix(osg::Matrix::identity());
hudCamera->setRenderOrder(osg::CameraNode::POST_RENDER);
hudCamera->setClearMask(GL_DEPTH_BUFFER_BIT);
std::string timesFont("fonts/times.ttf");
@@ -133,7 +135,7 @@ osg::Node* createHUD(osgText::Text* updateText)
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
geode->setName("simple");
modelview_abs->addChild(geode);
hudCamera->addChild(geode);
osgText::Text* text = new osgText::Text;
geode->addDrawable( text );
@@ -172,7 +174,7 @@ osg::Node* createHUD(osgText::Text* updateText)
quad->setVertexArray(vertices);
quad->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4));
geode->addDrawable(quad);
modelview_abs->addChild(geode);
hudCamera->addChild(geode);
position += delta;
}
@@ -186,7 +188,7 @@ osg::Node* createHUD(osgText::Text* updateText)
stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
geode->setName("The text label");
geode->addDrawable( updateText );
modelview_abs->addChild(geode);
hudCamera->addChild(geode);
updateText->setCharacterSize(20.0f);
updateText->setFont(timesFont);
@@ -197,7 +199,7 @@ osg::Node* createHUD(osgText::Text* updateText)
position += delta;
}
return projection;
return hudCamera;
}