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Added beginings of full dome correction support, starting with 6 slave camera

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configuration.
This commit is contained in:
Robert Osfield 2007-02-20 11:44:10 +00:00
parent 3ae76b08e1
commit fe8552bbd8
1 changed files with 125 additions and 4 deletions
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121
examples/osgdistortion/osgdistortion.cpp
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@ -169,6 +169,117 @@ osg::Node* createDistortionSubgraph(osg::Node* subgraph, const osg::Vec4& clearC
return distortionNode;
}
void setDomeCorrection(osgViewer::Viewer& viewer, osg::ArgumentParser& arguments)
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (!gc)
{
osg::notify(osg::NOTICE)<<"GraphicsWindow has not been created successfully."<<std::endl;
return;
}
int center_x = width/2;
int center_y = height/2;
int camera_width = 256;
int camera_height = 256;
// front face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
}
// top face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y+camera_height, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 1.0,0.0,0.0));
}
// left face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width*3/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-90.0f), 0.0,1.0,0.0));
}
// right face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x+camera_width/2, center_y, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 0.0,1.0,0.0));
}
// bottom face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y-camera_height, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(90.0f), 1.0,0.0,0.0));
}
// back face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(center_x-camera_width/2, center_y-2*camera_height, camera_width, camera_height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd::rotate(osg::inDegrees(-180.0f), 1.0,0.0,0.0));
}
viewer.getCamera()->setProjectionMatrixAsPerspective(90.0f, 1.0, 1, 1000.0);
viewer.assignSceneDataToCameras();
}
int main(int argc, char** argv)
{
@ -186,10 +297,20 @@ int main(int argc, char** argv)
return 1;
}
if (arguments.read("--dome"))
{
viewer.setSceneData( loadedModel );
setDomeCorrection(viewer, arguments);
}
else
{
osg::Node* distortionNode = createDistortionSubgraph(loadedModel, viewer.getCamera()->getClearColor());
// add model to the viewer.
viewer.setSceneData( distortionNode );
}
return viewer.run();
}