1 // fg_os_osgviewer.cxx -- common functions for fg_os interface
2 // implemented as an osgViewer
4 // Copyright (C) 2007 Tim Moore timoore@redhat.com
5 // Copyright (C) 2007 Mathias Froehlich
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
32 #include <boost/foreach.hpp>
34 #include <simgear/compiler.h>
35 #include <simgear/structure/exception.hxx>
36 #include <simgear/debug/logstream.hxx>
37 #include <simgear/props/props_io.hxx>
40 #include <osg/GraphicsContext>
42 #include <osg/Matrixd>
43 #include <osg/Viewport>
44 #include <osg/Version>
46 #include <osgViewer/ViewerEventHandlers>
47 #include <osgViewer/Viewer>
48 #include <osgGA/MatrixManipulator>
50 #include <Include/general.hxx>
51 #include <Scenery/scenery.hxx>
53 #include "fg_props.hxx"
55 #include "globals.hxx"
56 #include "renderer.hxx"
57 #include "CameraGroup.hxx"
58 #include "FGEventHandler.hxx"
59 #include "WindowBuilder.hxx"
60 #include "WindowSystemAdapter.hxx"
62 #if (FG_OSG_VERSION >= 19008)
63 #define OSG_HAS_MOUSE_CURSOR_PATCH
66 // fg_os implementation using OpenSceneGraph's osgViewer::Viewer class
67 // to create the graphics window and run the event/update/render loop.
70 // fg_os implementation
74 using namespace flightgear;
77 static osg::ref_ptr<osgViewer::Viewer> viewer;
78 static osg::ref_ptr<osg::Camera> mainCamera;
80 void fgOSOpenWindow(bool stencil)
82 osg::GraphicsContext::WindowingSystemInterface* wsi
83 = osg::GraphicsContext::getWindowingSystemInterface();
85 viewer = new osgViewer::Viewer;
86 viewer->setDatabasePager(FGScenery::getPagerSingleton());
87 CameraGroup* cameraGroup = 0;
89 mode = fgGetString("/sim/rendering/multithreading-mode", "SingleThreaded");
90 if (mode == "AutomaticSelection")
91 viewer->setThreadingModel(osgViewer::Viewer::AutomaticSelection);
92 else if (mode == "CullDrawThreadPerContext")
93 viewer->setThreadingModel(osgViewer::Viewer::CullDrawThreadPerContext);
94 else if (mode == "DrawThreadPerContext")
95 viewer->setThreadingModel(osgViewer::Viewer::DrawThreadPerContext);
96 else if (mode == "CullThreadPerCameraDrawThreadPerContext")
97 viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
99 viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
100 WindowBuilder::initWindowBuilder(stencil);
101 WindowBuilder *windowBuilder = WindowBuilder::getWindowBuilder();
103 // Look for windows, camera groups, and the old syntax of
105 SGPropertyNode* renderingNode = fgGetNode("/sim/rendering");
106 SGPropertyNode* cgroupNode = renderingNode->getNode("camera-group", true);
107 bool oldSyntax = !cgroupNode->hasChild("camera");
109 for (int i = 0; i < renderingNode->nChildren(); ++i) {
110 SGPropertyNode* propNode = renderingNode->getChild(i);
111 const char* propName = propNode->getName();
112 if (!strcmp(propName, "window") || !strcmp(propName, "camera")) {
113 SGPropertyNode* copiedNode
114 = cgroupNode->getNode(propName, propNode->getIndex(), true);
115 copyProperties(propNode, copiedNode);
118 vector<SGPropertyNode_ptr> cameras = cgroupNode->getChildren("camera");
119 SGPropertyNode* masterCamera = 0;
120 BOOST_FOREACH(SGPropertyNode_ptr& camera, cameras) {
121 if (camera->getDoubleValue("shear-x", 0.0) == 0.0
122 && camera->getDoubleValue("shear-y", 0.0) == 0.0) {
123 masterCamera = camera.ptr();
128 masterCamera = cgroupNode->getChild("camera", cameras.size(), true);
129 setValue(masterCamera->getNode("window/name", true),
130 windowBuilder->getDefaultWindowName());
132 SGPropertyNode* nameNode = masterCamera->getNode("window/name");
134 setValue(cgroupNode->getNode("gui/window/name", true),
135 nameNode->getStringValue());
137 cameraGroup = CameraGroup::buildCameraGroup(viewer.get(), cgroupNode);
138 Camera* guiCamera = getGUICamera(cameraGroup);
140 Viewport* guiViewport = guiCamera->getViewport();
141 fgSetInt("/sim/startup/xsize", guiViewport->width());
142 fgSetInt("/sim/startup/ysize", guiViewport->height());
144 FGEventHandler* manipulator = globals->get_renderer()->getEventHandler();
145 WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
146 if (wsa->windows.size() != 1) {
147 manipulator->setResizable(false);
149 viewer->getCamera()->setProjectionResizePolicy(osg::Camera::FIXED);
150 viewer->addEventHandler(manipulator);
151 // Let FG handle the escape key with a confirmation
152 viewer->setKeyEventSetsDone(0);
153 // The viewer won't start without some root.
154 viewer->setSceneData(new osg::Group);
155 globals->get_renderer()->setViewer(viewer.get());
156 CameraGroup::setDefault(cameraGroup);
159 static int status = 0;
161 void fgOSExit(int code)
163 viewer->setDone(true);
164 viewer->getDatabasePager()->cancel();
170 ref_ptr<FGEventHandler> manipulator
171 = globals->get_renderer()->getEventHandler();
172 viewer->setReleaseContextAtEndOfFrameHint(false);
173 while (!viewer->done()) {
174 fgIdleHandler idleFunc = manipulator->getIdleHandler();
175 fgDrawHandler drawFunc = manipulator->getDrawHandler();
185 int fgGetKeyModifiers()
187 return globals->get_renderer()->getEventHandler()->getCurrentModifiers();
190 void fgWarpMouse(int x, int y)
192 warpGUIPointer(CameraGroup::getDefault(), x, y);
195 void fgOSInit(int* argc, char** argv)
197 WindowSystemAdapter::setWSA(new WindowSystemAdapter);
201 void fgOSFullScreen()
205 #ifdef OSG_HAS_MOUSE_CURSOR_PATCH
206 static void setMouseCursor(osg::Camera* camera, int cursor)
210 osg::GraphicsContext* gc = camera->getGraphicsContext();
213 osgViewer::GraphicsWindow* gw;
214 gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc);
218 osgViewer::GraphicsWindow::MouseCursor mouseCursor;
219 mouseCursor = osgViewer::GraphicsWindow::InheritCursor;
220 if (cursor == MOUSE_CURSOR_NONE)
221 mouseCursor = osgViewer::GraphicsWindow::NoCursor;
222 else if(cursor == MOUSE_CURSOR_POINTER)
223 mouseCursor = osgViewer::GraphicsWindow::RightArrowCursor;
224 else if(cursor == MOUSE_CURSOR_WAIT)
225 mouseCursor = osgViewer::GraphicsWindow::WaitCursor;
226 else if(cursor == MOUSE_CURSOR_CROSSHAIR)
227 mouseCursor = osgViewer::GraphicsWindow::CrosshairCursor;
228 else if(cursor == MOUSE_CURSOR_LEFTRIGHT)
229 mouseCursor = osgViewer::GraphicsWindow::LeftRightCursor;
230 else if(cursor == MOUSE_CURSOR_TOPSIDE)
231 mouseCursor = osgViewer::GraphicsWindow::TopSideCursor;
232 else if(cursor == MOUSE_CURSOR_BOTTOMSIDE)
233 mouseCursor = osgViewer::GraphicsWindow::BottomSideCursor;
234 else if(cursor == MOUSE_CURSOR_LEFTSIDE)
235 mouseCursor = osgViewer::GraphicsWindow::LeftSideCursor;
236 else if(cursor == MOUSE_CURSOR_RIGHTSIDE)
237 mouseCursor = osgViewer::GraphicsWindow::RightSideCursor;
238 else if(cursor == MOUSE_CURSOR_TOPLEFT)
239 mouseCursor = osgViewer::GraphicsWindow::TopLeftCorner;
240 else if(cursor == MOUSE_CURSOR_TOPRIGHT)
241 mouseCursor = osgViewer::GraphicsWindow::TopRightCorner;
242 else if(cursor == MOUSE_CURSOR_BOTTOMLEFT)
243 mouseCursor = osgViewer::GraphicsWindow::BottomLeftCorner;
244 else if(cursor == MOUSE_CURSOR_BOTTOMRIGHT)
245 mouseCursor = osgViewer::GraphicsWindow::BottomRightCorner;
247 gw->setCursor(mouseCursor);
251 static int _cursor = -1;
253 void fgSetMouseCursor(int cursor)
256 #ifdef OSG_HAS_MOUSE_CURSOR_PATCH
257 setMouseCursor(viewer->getCamera(), cursor);
258 for (unsigned i = 0; i < viewer->getNumSlaves(); ++i)
259 setMouseCursor(viewer->getSlave(i)._camera.get(), cursor);
263 int fgGetMouseCursor()