274 lines
8.3 KiB
C++
274 lines
8.3 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osgUtil/Optimizer>
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#include <osgDB/ReadFile>
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#include <osgProducer/Viewer>
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#include <osg/Material>
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#include <osg/Geode>
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#include <osg/BlendFunc>
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#include <osg/Depth>
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#include <osg/Projection>
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#include <osg/AutoTransform>
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#include <osg/Geometry>
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#include <osgText/Text>
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osg::Node* createLabel(const osg::Vec3& pos, float size, const std::string& label)
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{
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osg::Geode* geode = new osg::Geode();
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std::string timesFont("fonts/arial.ttf");
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{
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osgText::Text* text = new osgText::Text;
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geode->addDrawable( text );
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text->setFont(timesFont);
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text->setPosition(pos);
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text->setCharacterSize(size);
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text->setAlignment(osgText::Text::CENTER_CENTER);
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text->setText(label);
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}
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return geode;
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}
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osg::Node* createLabel2(const osg::Vec3& pos, float size, const std::string& label)
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{
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osg::Geode* geode = new osg::Geode();
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std::string timesFont("fonts/arial.ttf");
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{
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osgText::Text* text = new osgText::Text;
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geode->addDrawable( text );
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text->setFont(timesFont);
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text->setPosition(pos);
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text->setFontResolution(40,40);
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text->setCharacterSize(size);
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text->setCharacterSizeMode(osgText::Text::SCREEN_COORDS);
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text->setAlignment(osgText::Text::CENTER_CENTER);
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text->setAutoRotateToScreen(true);
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text->setDrawMode(osgText::Text::TEXT_PIXMAP);
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text->setText(label);
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}
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return geode;
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}
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osg::Node* createLabel3(const osg::Vec3& pos, float size, const std::string& label)
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{
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osg::Geode* geode = new osg::Geode();
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std::string timesFont("fonts/arial.ttf");
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{
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osgText::Text* text = new osgText::Text;
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geode->addDrawable( text );
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text->setFont(timesFont);
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text->setPosition(pos);
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text->setFontResolution(40,40);
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text->setCharacterSize(size);
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text->setAlignment(osgText::Text::CENTER_CENTER);
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text->setAutoRotateToScreen(true);
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text->setCharacterSizeMode(osgText::Text::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT);
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text->setText(label);
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}
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return geode;
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}
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osg::Node* createAxis(const osg::Vec3& s, const osg::Vec3& e, int numReps)
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{
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osg::Group* group = new osg::Group;
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osg::Vec3 dv = e-s;
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dv /= float(numReps-1);
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osg::Vec3 pos = s;
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bool useAuto = false;
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if (useAuto)
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{
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osg::Vec3Array* vertices = new osg::Vec3Array;
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for(int i=0;i<numReps;++i)
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{
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osg::AutoTransform* at = new osg::AutoTransform;
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at->setPosition(pos);
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at->setAutoRotateToScreen(true);
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at->setAutoScaleToScreen(true);
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at->addChild(createLabel(osg::Vec3(0.0f,0.0f,0.0f),40.0f,"Test 2"));
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vertices->push_back(pos);
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pos += dv;
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group->addChild(at);
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}
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osg::Vec4Array* colors = new osg::Vec4Array;
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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osg::Geometry* geom = new osg::Geometry;
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geom->setVertexArray(vertices);
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geom->setColorArray(colors);
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geom->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(geom);
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group->addChild(geode);
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}
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else
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{
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osg::Vec3Array* vertices = new osg::Vec3Array;
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for(int i=0;i<numReps;++i)
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{
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group->addChild(createLabel3(osg::Vec3(pos),dv.length()*0.5f,"Test 2"));
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vertices->push_back(pos);
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pos += dv;
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}
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osg::Vec4Array* colors = new osg::Vec4Array;
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colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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osg::Geometry* geom = new osg::Geometry;
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geom->setVertexArray(vertices);
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geom->setColorArray(colors);
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geom->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(geom);
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group->addChild(geode);
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}
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return group;
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}
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osg::Node* createScene()
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{
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osg::Group* root = new osg::Group;
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int numReps = 3333;
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// int numReps = 10;
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root->addChild(createAxis(osg::Vec3(0.0,0.0,0.0),osg::Vec3(1000.0,0.0,0.0),numReps));
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root->addChild(createAxis(osg::Vec3(0.0,0.0,0.0),osg::Vec3(0.0,1000.0,0.0),numReps));
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root->addChild(createAxis(osg::Vec3(0.0,0.0,0.0),osg::Vec3(0.0,0.0,1000.0),numReps));
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return root;
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}
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int main( int argc, char **argv )
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{
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// use an ArgumentParser object to manage the program arguments.
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osg::ArgumentParser arguments(&argc,argv);
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// set up the usage document, in case we need to print out how to use this program.
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arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates how to do Head Up Displays.");
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arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] [filename] ...");
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arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
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// construct the viewer.
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osgProducer::Viewer viewer(arguments);
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// set up the value with sensible default event handlers.
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viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
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// get details on keyboard and mouse bindings used by the viewer.
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viewer.getUsage(*arguments.getApplicationUsage());
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// if user request help write it out to cout.
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if (arguments.read("-h") || arguments.read("--help"))
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{
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arguments.getApplicationUsage()->write(std::cout);
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return 1;
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}
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// any option left unread are converted into errors to write out later.
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arguments.reportRemainingOptionsAsUnrecognized();
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// report any errors if they have occured when parsing the program aguments.
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if (arguments.errors())
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{
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arguments.writeErrorMessages(std::cout);
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return 1;
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}
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// set the scene to render
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viewer.setSceneData(createScene());
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// create the windows and run the threads.
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viewer.realize();
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while( !viewer.done() )
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{
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// wait for all cull and draw threads to complete.
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viewer.sync();
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// update the scene by traversing it with the the update visitor which will
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// call all node update callbacks and animations.
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viewer.update();
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// fire off the cull and draw traversals of the scene.
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viewer.frame();
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}
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// wait for all cull and draw threads to complete before exit.
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viewer.sync();
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return 0;
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// osg::Node* obj = new osg::Node;
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// cout << "obj = "<<obj<<endl;
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// cout << "sizeof(obj) = "<<sizeof(*obj)<<endl;
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// cout << "sizeof(osg::Object) = "<<sizeof(osg::Object)<<endl;
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// cout << "sizeof(osg::Referenced) = "<<sizeof(osg::Referenced)<<endl;
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// cout << "vtbl = "<<*((unsigned int*)obj)<<endl;
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// cout << "next = "<<*((unsigned int*)obj+1)<<endl;
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//
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// osg::Node* obj2 = new osg::Node;
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// obj2->ref();
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// obj2->ref();
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// obj2->ref();
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// cout << "obj = "<<obj2<<endl;
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// cout << "sizeof(obj) = "<<sizeof(*obj)<<endl;
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// cout << "sizeof(osg::Object) = "<<sizeof(osg::Object)<<endl;
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// cout << "sizeof(osg::Referenced) = "<<sizeof(osg::Referenced)<<endl;
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// cout << "vtbl = "<<*((unsigned int*)obj2)<<endl;
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// cout << "next = "<<*((unsigned int*)obj2+1)<<endl;
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//
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// osg::Group* obj3 = new osg::Group;
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// cout << "obj = "<<obj3<<endl;
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// cout << "sizeof(obj) = "<<sizeof(*obj3)<<endl;
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// cout << "sizeof(osg::Object) = "<<sizeof(osg::Object)<<endl;
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// cout << "sizeof(osg::Referenced) = "<<sizeof(osg::Referenced)<<endl;
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// cout << "vtbl = "<<*((unsigned int*)obj3)<<endl;
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// cout << "next = "<<*((unsigned int*)obj3+1)<<endl;
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}
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