virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object*, osg::NodeVisitor*)
{
if ( ea.getEventType() == ea.PUSH )
{
// mouse click from [-1...1]
float nx = ea.getXnormalized();
float ny = ea.getYnormalized();
// clicked point in clip space:
osg::Vec3d pn( nx, ny, -1 ); // on near plane
osg::Vec3d pf( nx, ny, 1 ); // on far plane
OE_NOTICE << "clip: nx=" << nx << ", ny=" << ny << std::endl;
// take the view matrix as-is:
osg::Matrix view = _view->getCamera()->getViewMatrix();
// adjust projection matrix to include entire earth:
double fovy, ar, zn, zf;
_view->getCamera()->getProjectionMatrix().getPerspective(fovy, ar, zn, zf);
osg::Matrix proj;
proj.makePerspective(fovy, ar, 1.0, 1e10);
// Invert the MVP to transform points from clip to model space:
osg::Matrix MVP = view * proj;
osg::Matrix invMVP;
invMVP.invert(MVP);
pn = pn * invMVP;
pf = pf * invMVP;
OE_NOTICE << "model: near = " << pn.x() << ", " << pn.y() << ", " << pn.z() << std::endl;
OE_NOTICE << "model: far = " << pf.x() << ", " << pf.y() << ", " << pf.z() << std::endl;
// Intersect in model space.
osgUtil::LineSegmentIntersector* lsi = new osgUtil::LineSegmentIntersector(
osgUtil::Intersector::MODEL, pn, pf );
lsi->setIntersectionLimit( lsi->LIMIT_NEAREST );
osgUtil::IntersectionVisitor iv( lsi );
_node->accept( iv );
if ( lsi->containsIntersections() )
{
osg::Vec3d p = lsi->getIntersections().begin()->getWorldIntersectPoint();
OE_NOTICE << "i = " << p.x() << ", " << p.y() << ", " << p.z() << std::endl;
}
}
return false;
}
void OculusViewConfig::configure(osgViewer::View& view) const
{
m_device->setNearClip(m_nearClip);
m_device->setFarClip(m_farClip);
m_device->setSensorPredictionEnabled(m_useSensorPrediction);
m_device->setSensorPredictionDelta(m_predictionDelta);
if (m_useCustomScaleFactor) {
m_device->setCustomScaleFactor(m_customScaleFactor);
}
// Create screen with match the Oculus Rift resolution
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi) {
osg::notify(osg::NOTICE)<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
// Get the screen identifiers set in environment variable DISPLAY
osg::GraphicsContext::ScreenIdentifier si;
si.readDISPLAY();
// If displayNum has not been set, reset it to 0.
if (si.displayNum < 0) si.displayNum = 0;
// If screenNum has not been set, reset it to 0.
if (si.screenNum < 0) si.screenNum = 0;
//test by Shao
si.displayNum = _displayNum;
si.screenNum = _screenNum;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->hostName = si.hostName;
traits->screenNum = si.screenNum;
traits->displayNum = si.displayNum;
traits->windowDecoration = false;
traits->x = 0;
traits->y = 0;
traits->width = m_device->hScreenResolution();
traits->height = m_device->vScreenResolution();
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->vsync = true; // VSync should always be enabled for Oculus Rift applications
// Create a graphic context based on our desired traits
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits);
if (!gc) {
osg::notify(osg::NOTICE) << "Error, GraphicsWindow has not been created successfully" << std::endl;
return;
}
_main_camera = view.getCamera();
_main_camera->setName("Main");
// Disable scene rendering for main camera
_main_camera->setCullMask(~m_sceneNodeMask);
_main_camera->setGraphicsContext(gc);
// Use full view port
_main_camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
// Disable automatic computation of near and far plane on main camera, will propagate to slave cameras
_main_camera->setComputeNearFarMode( osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR );
const int textureWidth = m_device->scaleFactor() * m_device->hScreenResolution()/2;
const int textureHeight = m_device->scaleFactor() * m_device->vScreenResolution();
// master projection matrix
_main_camera->setProjectionMatrix(m_device->projectionCenterMatrix());
// Create textures for RTT cameras
osg::ref_ptr<osg::Texture2D> textureLeft = new osg::Texture2D;
textureLeft->setTextureSize( textureWidth, textureHeight );
textureLeft->setInternalFormat( GL_RGBA );
osg::ref_ptr<osg::Texture2D> textureRight = new osg::Texture2D;
textureRight->setTextureSize( textureWidth, textureHeight );
textureRight->setInternalFormat( GL_RGBA );
// Create RTT (Rendering to Texture) cameras and attach textures
osg::ref_ptr<osg::Camera> cameraRTTLeft = createRTTCamera(textureLeft, gc);
osg::ref_ptr<osg::Camera> cameraRTTRight = createRTTCamera(textureRight, gc);
cameraRTTLeft->setName("LeftRTT");
cameraRTTRight->setName("RightRTT");
cameraRTTLeft->setCullMask(m_sceneNodeMask);
cameraRTTRight->setCullMask(m_sceneNodeMask);
// Create HUD cameras for left eye
osg::ref_ptr<osg::Camera> cameraHUDLeft = createHUDCamera(0.0, 1.0, 0.0, 1.0, gc);
cameraHUDLeft->setName("LeftHUD");
cameraHUDLeft->setViewport(new osg::Viewport(0, 0,
m_device->hScreenResolution() / 2.0f, m_device->vScreenResolution()));
// Create HUD cameras for right eye
osg::ref_ptr<osg::Camera> cameraHUDRight = createHUDCamera(0.0, 1.0, 0.0, 1.0, gc);
cameraHUDRight->setName("RightHUD");
cameraHUDRight->setViewport(new osg::Viewport(m_device->hScreenResolution() / 2.0f, 0,
m_device->hScreenResolution() / 2.0f, m_device->vScreenResolution()));
// Create quads for each camera
osg::ref_ptr<osg::Geode> leftQuad = createHUDQuad(1.0f, 1.0f);
cameraHUDLeft->addChild(leftQuad);
osg::ref_ptr<osg::Geode> rightQuad = createHUDQuad(1.0f, 1.0f);
cameraHUDRight->addChild(rightQuad);
// Set up shaders from the Oculus SDK documentation
osg::ref_ptr<osg::Program> program = new osg::Program;
osg::ref_ptr<osg::Shader> vertexShader = new osg::Shader(osg::Shader::VERTEX);
vertexShader->loadShaderSourceFromFile(osgDB::findDataFile("warp.vert"));
osg::ref_ptr<osg::Shader> fragmentShader = new osg::Shader(osg::Shader::FRAGMENT);
// Fragment shader with or without correction for chromatic aberration
if (m_useChromaticAberrationCorrection) {
fragmentShader->loadShaderSourceFromFile(osgDB::findDataFile("warpWithChromeAb.frag"));
} else {
fragmentShader->loadShaderSourceFromFile(osgDB::findDataFile("warpWithoutChromeAb.frag"));
}
program->addShader(vertexShader);
program->addShader(fragmentShader);
// Attach shaders to each HUD
osg::StateSet* leftEyeStateSet = leftQuad->getOrCreateStateSet();
osg::StateSet* rightEyeStateSet = rightQuad->getOrCreateStateSet();
applyShaderParameters(leftEyeStateSet, program.get(), textureLeft.get(), OculusDevice::LEFT_EYE);
applyShaderParameters(rightEyeStateSet, program.get(), textureRight.get(), OculusDevice::RIGHT_EYE);
// Add RTT cameras as slaves, specifying offsets for the projection
view.addSlave(cameraRTTLeft,
m_device->projectionOffsetMatrix(OculusDevice::LEFT_EYE),
m_device->viewMatrix(OculusDevice::LEFT_EYE),
true);
view.addSlave(cameraRTTRight,
m_device->projectionOffsetMatrix(OculusDevice::RIGHT_EYE),
m_device->viewMatrix(OculusDevice::RIGHT_EYE),
true);
// Add HUD cameras as slaves
view.addSlave(cameraHUDLeft, false);
view.addSlave(cameraHUDRight, false);
view.setName("Oculus");
// Connect main camera to node callback that get HMD orientation
if (m_useOrientations) {
_main_camera->setDataVariance(osg::Object::DYNAMIC);
_callback = new OculusViewConfigOrientationCallback(cameraRTTLeft, cameraRTTRight, m_device);
_main_camera->setUpdateCallback(_callback);
}
}
/* Public functions */
void OculusViewConfig::configure(osgViewer::View& view) const
{
// Create a graphic context based on our desired traits
osg::ref_ptr<osg::GraphicsContext::Traits> traits = m_device->graphicsContextTraits();
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits);
if (!gc) {
osg::notify(osg::NOTICE) << "Error, GraphicsWindow has not been created successfully" << std::endl;
return;
}
// Attach to window, needed for direct mode
m_device->attachToWindow(gc);
// Attach a callback to detect swap
osg::ref_ptr<OculusSwapCallback> swapCallback = new OculusSwapCallback(m_device);
gc->setSwapCallback(swapCallback);
osg::ref_ptr<osg::Camera> camera = view.getCamera();
camera->setName("Main");
// Disable scene rendering for main camera
camera->setCullMask(~m_sceneNodeMask);
camera->setGraphicsContext(gc);
// Use full view port
camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
// Disable automatic computation of near and far plane on main camera, will propagate to slave cameras
camera->setComputeNearFarMode( osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR );
const int textureWidth = m_device->renderTargetWidth()/2;
const int textureHeight = m_device->renderTargetHeight();
// master projection matrix
camera->setProjectionMatrix(m_device->projectionMatrixCenter());
// Create textures for RTT cameras
osg::ref_ptr<osg::Texture2D> textureLeft = new osg::Texture2D;
textureLeft->setTextureSize( textureWidth, textureHeight );
textureLeft->setInternalFormat( GL_RGBA );
osg::ref_ptr<osg::Texture2D> textureRight = new osg::Texture2D;
textureRight->setTextureSize( textureWidth, textureHeight );
textureRight->setInternalFormat( GL_RGBA );
// Create RTT cameras and attach textures
osg::ref_ptr<osg::Camera> cameraRTTLeft = m_device->createRTTCamera(textureLeft, OculusDevice::LEFT, osg::Camera::RELATIVE_RF, gc);
osg::ref_ptr<osg::Camera> cameraRTTRight = m_device->createRTTCamera(textureRight, OculusDevice::RIGHT, osg::Camera::RELATIVE_RF, gc);
cameraRTTLeft->setName("LeftRTT");
cameraRTTRight->setName("RightRTT");
cameraRTTLeft->setCullMask(m_sceneNodeMask);
cameraRTTRight->setCullMask(m_sceneNodeMask);
// Create warp ortho camera
osg::ref_ptr<osg::Camera> cameraWarp = m_device->createWarpOrthoCamera(0.0, 1.0, 0.0, 1.0, gc);
cameraWarp->setName("WarpOrtho");
cameraWarp->setViewport(new osg::Viewport(0, 0, m_device->screenResolutionWidth(), m_device->screenResolutionHeight()));
// Create shader program
osg::ref_ptr<osg::Program> program = m_device->createShaderProgram();
// Create distortionMesh for each camera
osg::ref_ptr<osg::Geode> leftDistortionMesh = m_device->distortionMesh(OculusDevice::LEFT, program, 0, 0, textureWidth, textureHeight);
cameraWarp->addChild(leftDistortionMesh);
osg::ref_ptr<osg::Geode> rightDistortionMesh = m_device->distortionMesh(OculusDevice::RIGHT, program, 0, 0, textureWidth, textureHeight);
cameraWarp->addChild(rightDistortionMesh);
// Add pre draw camera to handle time warp
cameraWarp->setPreDrawCallback(new WarpCameraPreDrawCallback(m_device));
// Attach shaders to each distortion mesh
osg::ref_ptr<osg::StateSet> leftEyeStateSet = leftDistortionMesh->getOrCreateStateSet();
osg::ref_ptr<osg::StateSet> rightEyeStateSet = rightDistortionMesh->getOrCreateStateSet();
m_device->applyShaderParameters(leftEyeStateSet, program.get(), textureLeft.get(), OculusDevice::LEFT);
m_device->applyShaderParameters(rightEyeStateSet, program.get(), textureRight.get(), OculusDevice::RIGHT);
// Add RTT cameras as slaves, specifying offsets for the projection
view.addSlave(cameraRTTLeft,
m_device->projectionOffsetMatrixLeft(),
m_device->viewMatrixLeft(),
true);
view.addSlave(cameraRTTRight,
m_device->projectionOffsetMatrixRight(),
m_device->viewMatrixRight(),
true);
// Use sky light instead of headlight to avoid light changes when head movements
view.setLightingMode(osg::View::SKY_LIGHT);
// Add warp camera as slave
view.addSlave(cameraWarp, false);
view.setName("Oculus");
// Connect main camera to node callback that get HMD orientation
camera->setDataVariance(osg::Object::DYNAMIC);
camera->setCullCallback(new OculusViewConfigOrientationCallback(cameraRTTLeft, cameraRTTRight, m_device, swapCallback, m_warning));
// Add Oculus keyboard handler
view.addEventHandler(new OculusEventHandler(m_device));
view.addEventHandler(new OculusWarningEventHandler(m_device, m_warning));
}
void OculusViewConfig::configure(osgViewer::View& view) const
{
m_dev->setNearClip(m_nearClip);
m_dev->setFarClip(m_farClip);
m_dev->setSensorPredictionEnabled(m_useSensorPrediction);
m_dev->setSensorPredictionDelta(m_predictionDelta);
if (m_useCustomScaleFactor) {
m_dev->setCustomScaleFactor(m_customScaleFactor);
}
// Create screen with match the Oculus Rift resolution
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->windowDecoration = false;
traits->x = 0;
traits->y = 0;
traits->width = m_dev->hScreenResolution();
traits->height = m_dev->vScreenResolution();
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->sampleBuffers = true;
traits->samples = 4;
traits->vsync = true;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits);
osg::ref_ptr<osg::Camera> camera = view.getCamera();
camera->setGraphicsContext(gc);
// Use full viewport
camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
// Disable automatic computation of near and far plane on main camera, will propagate to slave cameras
camera->setComputeNearFarMode( osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR );
const int textureWidth = m_dev->scaleFactor() * m_dev->hScreenResolution()/2;
const int textureHeight = m_dev->scaleFactor() * m_dev->vScreenResolution();
// master projection matrix
camera->setProjectionMatrix(m_dev->projectionCenterMatrix());
osg::ref_ptr<osg::Texture2D> l_tex = new osg::Texture2D;
l_tex->setTextureSize( textureWidth, textureHeight );
l_tex->setInternalFormat( GL_RGBA );
osg::ref_ptr<osg::Texture2D> r_tex = new osg::Texture2D;
r_tex->setTextureSize( textureWidth, textureHeight );
r_tex->setInternalFormat( GL_RGBA );
osg::ref_ptr<osg::Camera> l_rtt = createRTTCamera(osg::Camera::COLOR_BUFFER, l_tex, gc);
osg::ref_ptr<osg::Camera> r_rtt = createRTTCamera(osg::Camera::COLOR_BUFFER, r_tex, gc);
// Create HUD cameras for each eye
osg::ref_ptr<osg::Camera> l_hud = createHUDCamera(0.0, 1.0, 0.0, 1.0, gc);
l_hud->setViewport(new osg::Viewport(0, 0, m_dev->hScreenResolution() / 2.0f, m_dev->vScreenResolution()));
osg::ref_ptr<osg::Camera> r_hud = createHUDCamera(0.0, 1.0, 0.0, 1.0, gc);
r_hud->setViewport(new osg::Viewport(m_dev->hScreenResolution() / 2.0f, 0,
m_dev->hScreenResolution() / 2.0f, m_dev->vScreenResolution()));
// Create quads on each camera
osg::ref_ptr<osg::Geode> leftQuad = createHUDQuad(1.0f, 1.0f);
l_hud->addChild(leftQuad);
osg::ref_ptr<osg::Geode> rightQuad = createHUDQuad(1.0f, 1.0f);
r_hud->addChild(rightQuad);
// Set up shaders from the Oculus SDK documentation
osg::ref_ptr<osg::Program> program = new osg::Program;
osg::ref_ptr<osg::Shader> vertexShader = new osg::Shader(osg::Shader::VERTEX);
vertexShader->loadShaderSourceFromFile(osgDB::findDataFile("warp.vert"));
osg::ref_ptr<osg::Shader> fragmentShader = new osg::Shader(osg::Shader::FRAGMENT);
// Fragment shader with or without correction for chromatic aberration
if (m_useChromaticAberrationCorrection) {
fragmentShader->loadShaderSourceFromFile(osgDB::findDataFile("warpWithChromeAb.frag"));
} else {
fragmentShader->loadShaderSourceFromFile(osgDB::findDataFile("warpWithoutChromeAb.frag"));
}
program->addShader(vertexShader);
program->addShader(fragmentShader);
// Configure state sets for both eyes
osg::StateSet* leftEyeStateSet = leftQuad->getOrCreateStateSet();
leftEyeStateSet->setTextureAttributeAndModes(0, l_tex, osg::StateAttribute::ON);
leftEyeStateSet->setAttributeAndModes( program, osg::StateAttribute::ON );
leftEyeStateSet->addUniform( new osg::Uniform("WarpTexture", 0) );
leftEyeStateSet->addUniform( new osg::Uniform("LensCenter", m_dev->lensCenter(OculusDevice::LEFT_EYE)));
leftEyeStateSet->addUniform( new osg::Uniform("ScreenCenter", m_dev->screenCenter()));
leftEyeStateSet->addUniform( new osg::Uniform("Scale", m_dev->scale()));
leftEyeStateSet->addUniform( new osg::Uniform("ScaleIn", m_dev->scaleIn()));
leftEyeStateSet->addUniform( new osg::Uniform("HmdWarpParam", m_dev->warpParameters()));
leftEyeStateSet->addUniform( new osg::Uniform("ChromAbParam", m_dev->chromAbParameters()));
osg::StateSet* rightEyeStateSet = rightQuad->getOrCreateStateSet();
rightEyeStateSet->setTextureAttributeAndModes(0, r_tex, osg::StateAttribute::ON);
rightEyeStateSet->setAttributeAndModes( program, osg::StateAttribute::ON );
rightEyeStateSet->addUniform( new osg::Uniform("WarpTexture", 0) );
rightEyeStateSet->addUniform( new osg::Uniform("LensCenter", m_dev->lensCenter(OculusDevice::RIGHT_EYE)));
rightEyeStateSet->addUniform( new osg::Uniform("ScreenCenter", m_dev->screenCenter()));
rightEyeStateSet->addUniform( new osg::Uniform("Scale", m_dev->scale()));
rightEyeStateSet->addUniform( new osg::Uniform("ScaleIn", m_dev->scaleIn()));
rightEyeStateSet->addUniform( new osg::Uniform("HmdWarpParam", m_dev->warpParameters()));
rightEyeStateSet->addUniform( new osg::Uniform("ChromAbParam", m_dev->chromAbParameters()));
// Add cameras as slaves, specifying offsets for the projection
view.addSlave(l_rtt, m_dev->projectionOffsetMatrix(OculusDevice::LEFT_EYE), m_dev->viewMatrix(OculusDevice::LEFT_EYE), true);
view.addSlave(r_rtt, m_dev->projectionOffsetMatrix(OculusDevice::RIGHT_EYE), m_dev->viewMatrix(OculusDevice::RIGHT_EYE), true);
view.addSlave(l_hud, false);
view.addSlave(r_hud, false);
// Connect main camera to node callback that get HMD orientation
if (m_useOrientations) {
camera->setDataVariance(osg::Object::DYNAMIC);
camera->setUpdateCallback(new OculusViewConfigOrientationCallback(l_rtt, r_rtt, m_dev));
}
}
void AcrossAllScreens::configure(osgViewer::View& view) const
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
OSG_NOTICE<<"AcrossAllScreens::configure() : Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
osg::DisplaySettings* ds = getActiveDisplaySetting(view);
double fovy, aspectRatio, zNear, zFar;
view.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
osg::GraphicsContext::ScreenIdentifier si;
si.readDISPLAY();
// displayNum has not been set so reset it to 0.
if (si.displayNum<0) si.displayNum = 0;
unsigned int numScreens = wsi->getNumScreens(si);
if (numScreens==1)
{
if (si.screenNum<0) si.screenNum = 0;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits(ds);
traits->hostName = si.hostName;
traits->displayNum = si.displayNum;
traits->screenNum = si.screenNum;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
view.getCamera()->setGraphicsContext(gc.get());
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc.get());
if (gw)
{
OSG_INFO<<" GraphicsWindow has been created successfully."<<std::endl;
gw->getEventQueue()->getCurrentEventState()->setWindowRectangle(0, 0, width, height );
}
else
{
OSG_NOTICE<<" GraphicsWindow has not been created successfully."<<std::endl;
}
double newAspectRatio = double(traits->width) / double(traits->height);
double aspectRatioChange = newAspectRatio / aspectRatio;
if (aspectRatioChange != 1.0)
{
view.getCamera()->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
}
view.getCamera()->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
view.getCamera()->setDrawBuffer(buffer);
view.getCamera()->setReadBuffer(buffer);
}
else
{
double translate_x = 0.0;
for(unsigned int i=0; i<numScreens; ++i)
{
si.screenNum = i;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
translate_x += double(width) / (double(height) * aspectRatio);
}
bool stereoSplitScreens = numScreens==2 &&
ds->getStereoMode()==osg::DisplaySettings::HORIZONTAL_SPLIT &&
ds->getStereo();
for(unsigned int i=0; i<numScreens; ++i)
{
si.screenNum = i;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits(ds);
traits->hostName = si.hostName;
traits->displayNum = si.displayNum;
traits->screenNum = si.screenNum;
traits->screenNum = i;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc.get());
if (gw)
{
OSG_INFO<<" GraphicsWindow has been created successfully."<<gw<<std::endl;
gw->getEventQueue()->getCurrentEventState()->setWindowRectangle(traits->x, traits->y, traits->width, traits->height );
}
else
{
OSG_NOTICE<<" GraphicsWindow has not been created successfully."<<std::endl;
}
camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
if (stereoSplitScreens)
{
unsigned int leftCameraNum = (ds->getSplitStereoHorizontalEyeMapping()==osg::DisplaySettings::LEFT_EYE_LEFT_VIEWPORT) ? 0 : 1;
osg::ref_ptr<osg::DisplaySettings> ds_local = new osg::DisplaySettings(*ds);
ds_local->setStereoMode(leftCameraNum==i ? osg::DisplaySettings::LEFT_EYE : osg::DisplaySettings::RIGHT_EYE);
camera->setDisplaySettings(ds_local.get());
view.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd() );
}
else
{
double newAspectRatio = double(traits->width) / double(traits->height);
double aspectRatioChange = newAspectRatio / aspectRatio;
view.addSlave(camera.get(), osg::Matrixd::translate( translate_x - aspectRatioChange, 0.0, 0.0) * osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0), osg::Matrixd() );
translate_x -= aspectRatioChange * 2.0;
}
}
}
view.assignSceneDataToCameras();
}