/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield * * This library is open source and may be redistributed and/or modified under * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or * (at your option) any later version. The full license is in LICENSE file * included with this distribution, and on the openscenegraph.org website. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * OpenSceneGraph Public License for more details. */ #include #include #include #include #include #include #include #include #include #include /////////////////////////////////////////////////////////////////////////////// // globals #define TEXT_POLYGON "Polygon Font - jygq" #define TEXT_OUTLINE "Outline Font - jygq" #define TEXT_TEXTURE "Texture Font - jygq" #define TEXT_BITMAP "Bitmap Font - jygq" #define TEXT_PIXMAP "Pixmap Font - jygq" #define TEXT_COL_2D osg::Vec4(.9,.9,.9,1) #define TEXT_COL_3D osg::Vec4(.99,.3,.2,1) std::string ttfPath("fonts/times.ttf"); std::string ttfPath1("fonts/arial.ttf"); int gFontSize=18; int gFontSize1=24; std::vector > gTextList; osgText::Text::AlignmentType gAlignment=osgText::Text::LEFT_BOTTOM; osg::Group* createText() { osg::Group* rootNode = new osg::Group; osgText::Text* text; osg::Geode* geode; osg::Material* textMaterial; osg::StateSet* textState; double xOffset=150; double yOffset=gFontSize+10; /////////////////////////////////////////////////////////////////////////// // setup the texts /////////////////////////////////////////////////////////////////////////// // BitmapFont osgText::BitmapFont* bitmapFont= new osgText::BitmapFont(ttfPath, gFontSize1); text= new osgText::Text(bitmapFont); gTextList.push_back(text); text->setText(std::string("2d ")+std::string(TEXT_BITMAP)); text->setPosition(osg::Vec3(xOffset,yOffset,0)); text->setDrawMode( osgText::Text::TEXT | osgText::Text::BOUNDINGBOX | osgText::Text::ALIGNMENT ); text->setAlignment(gAlignment); geode = new osg::Geode(); geode->setName("BitmapFont"); geode->addDrawable( text ); textMaterial = new osg::Material(); textMaterial->setColorMode( osg::Material::AMBIENT_AND_DIFFUSE); textMaterial->setDiffuse( osg::Material::FRONT_AND_BACK, TEXT_COL_2D); textState = new osg::StateSet(); textState->setAttribute(textMaterial ); geode->setStateSet( textState ); rootNode->addChild(geode); xOffset+=90; yOffset+=120; /////////////////////////////////////////////////////////////////////////// // PixmapFont osgText::PixmapFont* pixmapFont= new osgText::PixmapFont(ttfPath, gFontSize1); text= new osgText::Text(pixmapFont); gTextList.push_back(text); text->setText(std::string("2d ")+std::string(TEXT_PIXMAP)); text->setPosition(osg::Vec3(xOffset,yOffset,0)); text->setDrawMode( osgText::Text::TEXT | osgText::Text::BOUNDINGBOX | osgText::Text::ALIGNMENT ); text->setAlignment(gAlignment); geode = new osg::Geode(); geode->setName("PixmapFont"); geode->addDrawable( text ); textMaterial = new osg::Material(); textMaterial->setColorMode( osg::Material::AMBIENT_AND_DIFFUSE); textMaterial->setDiffuse( osg::Material::FRONT_AND_BACK,TEXT_COL_2D); // to get antiaA pixmapFonts we have to draw them with blending osg::BlendFunc *transp= new osg::BlendFunc(); transp->setFunction(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA); textState = new osg::StateSet(); textState->setAttribute(textMaterial ); textState->setAttribute(transp); textState->setMode(GL_BLEND,osg::StateAttribute::ON); textState->setRenderingHint(osg::StateSet::TRANSPARENT_BIN); geode->setStateSet( textState ); rootNode->addChild(geode); xOffset+=90; yOffset+=120; /////////////////////////////////////////////////////////////////////////// // TextureFont osgText::TextureFont* textureFont= new osgText::TextureFont(ttfPath1, gFontSize1); text= new osgText::Text(textureFont); gTextList.push_back(text); text->setText(std::string("2d ")+std::string(TEXT_TEXTURE)); text->setPosition(osg::Vec3(xOffset,yOffset,0)); text->setDrawMode( osgText::Text::TEXT | osgText::Text::BOUNDINGBOX | osgText::Text::ALIGNMENT ); text->setAlignment(gAlignment); geode = new osg::Geode(); geode->setName("TextureFont"); geode->addDrawable( text ); textMaterial = new osg::Material(); textMaterial->setColorMode( osg::Material::AMBIENT_AND_DIFFUSE); textMaterial->setDiffuse( osg::Material::FRONT_AND_BACK, TEXT_COL_2D); // to get antiaA pixmapFonts we have to draw them with blending transp= new osg::BlendFunc(); transp->setFunction(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); textState = new osg::StateSet(); textState->setAttribute(textMaterial ); textState->setAttribute(transp); textState->setTextureMode(0,GL_TEXTURE_2D,osg::StateAttribute::ON); textState->setRenderingHint(osg::StateSet::TRANSPARENT_BIN); geode->setStateSet( textState ); rootNode->addChild(geode); xOffset+=90; yOffset+=120; /////////////////////////////////////////////////////////////////////////// // PolygonFont osgText::PolygonFont* polygonFont= new osgText::PolygonFont(ttfPath, gFontSize1, 3); text= new osgText::Text(polygonFont); gTextList.push_back(text); text->setText(std::string("2d ")+std::string("TEXT_POLYGON")); text->setPosition(osg::Vec3(xOffset,yOffset,0)); text->setDrawMode( osgText::Text::TEXT | osgText::Text::BOUNDINGBOX | osgText::Text::ALIGNMENT ); text->setAlignment(gAlignment); geode = new osg::Geode(); geode->setName("PolygonFont"); geode->addDrawable( text ); textMaterial = new osg::Material(); textMaterial->setColorMode( osg::Material::AMBIENT_AND_DIFFUSE); textMaterial->setDiffuse( osg::Material::FRONT_AND_BACK, TEXT_COL_2D); textState = new osg::StateSet(); textState->setAttribute(textMaterial ); geode->setStateSet( textState ); rootNode->addChild(geode); xOffset+=90; yOffset+=120; /////////////////////////////////////////////////////////////////////////// // OutlineFont osgText::OutlineFont* outlineFont= new osgText::OutlineFont(ttfPath, gFontSize1, 3); text= new osgText::Text(outlineFont); gTextList.push_back(text); text->setText(std::string("2d ")+std::string(TEXT_OUTLINE)); text->setPosition(osg::Vec3(xOffset,yOffset,0)); text->setDrawMode( osgText::Text::TEXT | osgText::Text::BOUNDINGBOX | osgText::Text::ALIGNMENT ); text->setAlignment(gAlignment); geode = new osg::Geode(); geode->setName("OutlineFont"); geode->addDrawable( text ); textMaterial = new osg::Material(); textMaterial->setColorMode( osg::Material::AMBIENT_AND_DIFFUSE); textMaterial->setDiffuse( osg::Material::FRONT_AND_BACK, TEXT_COL_2D); textState = new osg::StateSet(); textState->setAttribute(textMaterial ); geode->setStateSet( textState ); rootNode->addChild(geode); // now add a depth attribute to the scene to force it to draw on top. osg::Depth* depth = new osg::Depth; depth->setRange(0.0,0.0); osg::StateSet* rootState = new osg::StateSet(); rootState->setAttribute(depth); rootState->setMode(GL_LIGHTING,osg::StateAttribute::OFF); rootNode->setStateSet(rootState); return rootNode; } int main( int argc, char **argv ) { // use an ArgumentParser object to manage the program arguments. osg::ArgumentParser arguments(&argc,argv); // set up the usage document, in case we need to print out how to use this program. arguments.getApplicationUsage()->setCommandLineUsage(arguments.getProgramName()+" [options] [filename] ..."); arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information"); // construct the viewer. osgProducer::Viewer viewer(arguments); // set up the value with sensible default event handlers. viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS); // get details on keyboard and mouse bindings used by the viewer. viewer.getUsage(*arguments.getApplicationUsage()); // if user request help write it out to cout. if (arguments.read("-h") || arguments.read("--help")) { arguments.getApplicationUsage()->write(cout); return 1; } // any option left unread are converted into errors to write out later. arguments.reportRemainingOptionsAsUnrecognized(); // report any errors if they have occured when parsing the program aguments. if (arguments.errors()) { arguments.writeErrorMessages(cout); return 1; } // read the scene from the list of file specified commandline args. osg::ref_ptr rootNode = osgDB::readNodeFiles(arguments); // prepare scene. { if (rootNode.valid()) { // optimize the scene graph, remove rendundent nodes and state etc. osgUtil::Optimizer optimizer; optimizer.optimize(rootNode.get()); } // make sure the root node is group so we can add extra nodes to it. osg::Group* group = dynamic_cast(rootNode.get()); if (!group) { group = new osg::Group; if (rootNode.valid()) group->addChild(rootNode.get()); rootNode = group; } // create the hud. osg::Projection* projection = new osg::Projection; projection->setMatrix(osg::Matrix::ortho2D(0,1024,0,768)); osg::MatrixTransform* modelview_abs = new osg::MatrixTransform; modelview_abs->setReferenceFrame(osg::Transform::RELATIVE_TO_ABSOLUTE); modelview_abs->setMatrix(osg::Matrix::identity()); modelview_abs->addChild(createText()); projection->addChild(modelview_abs); group->addChild(projection); } // set the scene to render viewer.setSceneData(rootNode.get()); // create the windows and run the threads. viewer.realize(Producer::CameraGroup::ThreadPerCamera); while( !viewer.done() ) { // wait for all cull and draw threads to complete. viewer.sync(); // update the scene by traversing it with the the update visitor which will // call all node update callbacks and animations. viewer.update(); // fire off the cull and draw traversals of the scene. viewer.frame(); } return 0; }