124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
#include <osg/Image>
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#include <osg/Geometry>
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#include <osg/Texture2D>
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#include <osgGA/TrackballManipulator>
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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#include <iostream>
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#include <osg/io_utils>
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#include <osgDB/ReadFile>
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osg::Node* createInteractiveQuad(const osg::Vec3& origin, osg::Vec3& widthAxis, osg::Vec3& heightAxis,
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osg::Image* image)
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{
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bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
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osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(origin, widthAxis, heightAxis,
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0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
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osg::Texture2D* texture = new osg::Texture2D(image);
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texture->setResizeNonPowerOfTwoHint(false);
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texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
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texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
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texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
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pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
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texture,
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osg::StateAttribute::ON);
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pictureQuad->setEventCallback(new osgViewer::InteractiveImageHandler(image));
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osg::Geode* geode = new osg::Geode;
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geode->addDrawable(pictureQuad);
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return geode;
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}
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class EscapeHandler : public osgGA::GUIEventHandler
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{
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public:
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EscapeHandler() {}
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bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa)
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{
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if (ea.getHandled()) return false;
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switch(ea.getEventType())
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{
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case(osgGA::GUIEventAdapter::KEYUP):
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{
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if (ea.getKey()==osgGA::GUIEventAdapter::KEY_Escape)
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{
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osgViewer::View* view = dynamic_cast<osgViewer::View*>(&aa);
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if (view) view->getViewerBase()->setDone(true);
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return true;
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}
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}
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default:
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return false;
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}
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return false;
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}
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};
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int main(int argc,char** argv)
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{
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osg::ArgumentParser arguments(&argc, argv);
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osgViewer::Viewer viewer;
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typedef std::list< osg::ref_ptr<osg::Image> > Images;
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Images images;
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std::string hostname;
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while (arguments.read("--host",hostname))
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{
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osg::ref_ptr<osg::Image> image = osgDB::readImageFile(hostname+std::string(".vnc"));
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if (image.valid()) images.push_back(image.get());
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}
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if (images.empty())
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{
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return 1;
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}
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bool xyPlane = false;
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osg::Group* group = new osg::Group;
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osg::Vec3 origin = osg::Vec3(0.0f,0.0f,0.0f);
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for(Images::iterator itr = images.begin();
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itr != images.end();
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++itr)
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{
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osg::Image* image = itr->get();
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float width = 1.0;
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float height = float(image->t())/float(image->s());
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osg::Vec3 widthAxis = osg::Vec3(width,0.0f,0.0f);
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osg::Vec3 heightAxis = xyPlane ? osg::Vec3(0.0f,height,0.0f) : osg::Vec3(0.0f,0.0f,height);
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group->addChild(createInteractiveQuad(origin, widthAxis, heightAxis, image));
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origin += widthAxis*1.1f;
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}
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viewer.setSceneData(group);
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viewer.addEventHandler(new osgViewer::StatsHandler);
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// add a custom escape handler, but disable the standard viewer one to enable the vnc images to handle
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// the escape without it getting caught by the viewer.
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viewer.addEventHandler(new EscapeHandler);
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viewer.setKeyEventSetsDone(0);
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return viewer.run();
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}
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