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 viewer = new osgViewer::Viewer;
83 viewer->setDatabasePager(FGScenery::getPagerSingleton());
84 CameraGroup* cameraGroup = 0;
86 mode = fgGetString("/sim/rendering/multithreading-mode", "SingleThreaded");
87 if (mode == "AutomaticSelection")
88 viewer->setThreadingModel(osgViewer::Viewer::AutomaticSelection);
89 else if (mode == "CullDrawThreadPerContext")
90 viewer->setThreadingModel(osgViewer::Viewer::CullDrawThreadPerContext);
91 else if (mode == "DrawThreadPerContext")
92 viewer->setThreadingModel(osgViewer::Viewer::DrawThreadPerContext);
93 else if (mode == "CullThreadPerCameraDrawThreadPerContext")
94 viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
96 viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
97 WindowBuilder::initWindowBuilder(stencil);
98 WindowBuilder *windowBuilder = WindowBuilder::getWindowBuilder();
100 // Look for windows, camera groups, and the old syntax of
102 SGPropertyNode* renderingNode = fgGetNode("/sim/rendering");
103 SGPropertyNode* cgroupNode = renderingNode->getNode("camera-group", true);
104 bool oldSyntax = !cgroupNode->hasChild("camera");
106 for (int i = 0; i < renderingNode->nChildren(); ++i) {
107 SGPropertyNode* propNode = renderingNode->getChild(i);
108 const char* propName = propNode->getName();
109 if (!strcmp(propName, "window") || !strcmp(propName, "camera")) {
110 SGPropertyNode* copiedNode
111 = cgroupNode->getNode(propName, propNode->getIndex(), true);
112 copyProperties(propNode, copiedNode);
115 vector<SGPropertyNode_ptr> cameras = cgroupNode->getChildren("camera");
116 SGPropertyNode* masterCamera = 0;
117 BOOST_FOREACH(SGPropertyNode_ptr& camera, cameras) {
118 if (camera->getDoubleValue("shear-x", 0.0) == 0.0
119 && camera->getDoubleValue("shear-y", 0.0) == 0.0) {
120 masterCamera = camera.ptr();
125 masterCamera = cgroupNode->getChild("camera", cameras.size(), true);
126 setValue(masterCamera->getNode("window/name", true),
127 windowBuilder->getDefaultWindowName());
129 SGPropertyNode* nameNode = masterCamera->getNode("window/name");
131 setValue(cgroupNode->getNode("gui/window/name", true),
132 nameNode->getStringValue());
134 cameraGroup = CameraGroup::buildCameraGroup(viewer.get(), cgroupNode);
135 Camera* guiCamera = getGUICamera(cameraGroup);
137 Viewport* guiViewport = guiCamera->getViewport();
138 fgSetInt("/sim/startup/xsize", guiViewport->width());
139 fgSetInt("/sim/startup/ysize", guiViewport->height());
141 FGEventHandler* manipulator = globals->get_renderer()->getEventHandler();
142 WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
143 if (wsa->windows.size() != 1) {
144 manipulator->setResizable(false);
146 viewer->getCamera()->setProjectionResizePolicy(osg::Camera::FIXED);
147 viewer->addEventHandler(manipulator);
148 // Let FG handle the escape key with a confirmation
149 viewer->setKeyEventSetsDone(0);
150 // The viewer won't start without some root.
151 viewer->setSceneData(new osg::Group);
152 globals->get_renderer()->setViewer(viewer.get());
153 CameraGroup::setDefault(cameraGroup);
156 static int status = 0;
158 void fgOSExit(int code)
160 viewer->setDone(true);
161 viewer->getDatabasePager()->cancel();
167 ref_ptr<FGEventHandler> manipulator
168 = globals->get_renderer()->getEventHandler();
169 viewer->setReleaseContextAtEndOfFrameHint(false);
170 if (!viewer->isRealized())
172 while (!viewer->done()) {
173 fgIdleHandler idleFunc = manipulator->getIdleHandler();
174 fgDrawHandler drawFunc = manipulator->getDrawHandler();
184 int fgGetKeyModifiers()
186 return globals->get_renderer()->getEventHandler()->getCurrentModifiers();
189 void fgWarpMouse(int x, int y)
191 warpGUIPointer(CameraGroup::getDefault(), x, y);
194 void fgOSInit(int* argc, char** argv)
196 WindowSystemAdapter::setWSA(new WindowSystemAdapter);
200 void fgOSFullScreen()
204 #ifdef OSG_HAS_MOUSE_CURSOR_PATCH
205 static void setMouseCursor(osg::Camera* camera, int cursor)
209 osg::GraphicsContext* gc = camera->getGraphicsContext();
212 osgViewer::GraphicsWindow* gw;
213 gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc);
217 osgViewer::GraphicsWindow::MouseCursor mouseCursor;
218 mouseCursor = osgViewer::GraphicsWindow::InheritCursor;
219 if (cursor == MOUSE_CURSOR_NONE)
220 mouseCursor = osgViewer::GraphicsWindow::NoCursor;
221 else if(cursor == MOUSE_CURSOR_POINTER)
222 mouseCursor = osgViewer::GraphicsWindow::RightArrowCursor;
223 else if(cursor == MOUSE_CURSOR_WAIT)
224 mouseCursor = osgViewer::GraphicsWindow::WaitCursor;
225 else if(cursor == MOUSE_CURSOR_CROSSHAIR)
226 mouseCursor = osgViewer::GraphicsWindow::CrosshairCursor;
227 else if(cursor == MOUSE_CURSOR_LEFTRIGHT)
228 mouseCursor = osgViewer::GraphicsWindow::LeftRightCursor;
229 else if(cursor == MOUSE_CURSOR_TOPSIDE)
230 mouseCursor = osgViewer::GraphicsWindow::TopSideCursor;
231 else if(cursor == MOUSE_CURSOR_BOTTOMSIDE)
232 mouseCursor = osgViewer::GraphicsWindow::BottomSideCursor;
233 else if(cursor == MOUSE_CURSOR_LEFTSIDE)
234 mouseCursor = osgViewer::GraphicsWindow::LeftSideCursor;
235 else if(cursor == MOUSE_CURSOR_RIGHTSIDE)
236 mouseCursor = osgViewer::GraphicsWindow::RightSideCursor;
237 else if(cursor == MOUSE_CURSOR_TOPLEFT)
238 mouseCursor = osgViewer::GraphicsWindow::TopLeftCorner;
239 else if(cursor == MOUSE_CURSOR_TOPRIGHT)
240 mouseCursor = osgViewer::GraphicsWindow::TopRightCorner;
241 else if(cursor == MOUSE_CURSOR_BOTTOMLEFT)
242 mouseCursor = osgViewer::GraphicsWindow::BottomLeftCorner;
243 else if(cursor == MOUSE_CURSOR_BOTTOMRIGHT)
244 mouseCursor = osgViewer::GraphicsWindow::BottomRightCorner;
246 gw->setCursor(mouseCursor);
250 static int _cursor = -1;
252 void fgSetMouseCursor(int cursor)
255 #ifdef OSG_HAS_MOUSE_CURSOR_PATCH
256 setMouseCursor(viewer->getCamera(), cursor);
257 for (unsigned i = 0; i < viewer->getNumSlaves(); ++i)
258 setMouseCursor(viewer->getSlave(i)._camera.get(), cursor);
262 int fgGetMouseCursor()