[osg-users] Question about osgManipulator::GridConstraint
Robert Osfield
robert.osfield at gmail.com
Tue Nov 24 05:31:44 PST 2009
Hi Matthias,
Could you provide the modified file as an attachment rather than
inline as the later breaks the indentation/word wrap.
Cheers,
Robert.
On Tue, Nov 24, 2009 at 12:29 PM, Matthias Asselborn
<matthias.asselborn at gmx.de> wrote:
> Thank you very much Robert for this reply!
>
> here is the whole code
> ive modified the method addDraggerToScene
>
>
> Code:
>
> /* OpenSceneGraph example, osgmanipulator.
> *
> * Permission is hereby granted, free of charge, to any person obtaining a copy
> * of this software and associated documentation files (the "Software"), to deal
> * in the Software without restriction, including without limitation the rights
> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> * copies of the Software, and to permit persons to whom the Software is
> * furnished to do so, subject to the following conditions:
> *
> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> * THE SOFTWARE.
> */
>
> #include <osgDB/ReadFile>
> #include <osgUtil/Optimizer>
> #include <osgViewer/Viewer>
> #include <osg/CoordinateSystemNode>
> #include <osgText/Text>
>
> #include <osgManipulator/TabBoxDragger>
> #include <osgManipulator/TabBoxTrackballDragger>
> #include <osgManipulator/TabPlaneDragger>
> #include <osgManipulator/TabPlaneTrackballDragger>
> #include <osgManipulator/TrackballDragger>
> #include <osgManipulator/Translate1DDragger>
> #include <osgManipulator/Translate2DDragger>
> #include <osgManipulator/TranslateAxisDragger>
>
> #include <osg/ShapeDrawable>
> #include <osg/MatrixTransform>
> #include <osg/Geometry>
> #include <osg/Material>
>
> #include <iostream>
>
> osgManipulator::Dragger* createDragger(const std::string& name)
> {
> osgManipulator::Dragger* dragger = 0;
> if ("TabPlaneDragger" == name)
> {
> osgManipulator::TabPlaneDragger* d = new osgManipulator::TabPlaneDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else if ("TabPlaneTrackballDragger" == name)
> {
> osgManipulator::TabPlaneTrackballDragger* d = new osgManipulator::TabPlaneTrackballDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else if ("TabBoxTrackballDragger" == name)
> {
> osgManipulator::TabBoxTrackballDragger* d = new osgManipulator::TabBoxTrackballDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else if ("TrackballDragger" == name)
> {
> osgManipulator::TrackballDragger* d = new osgManipulator::TrackballDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else if ("Translate1DDragger" == name)
> {
> osgManipulator::Translate1DDragger* d = new osgManipulator::Translate1DDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else if ("Translate2DDragger" == name)
> {
> osgManipulator::Translate2DDragger* d = new osgManipulator::Translate2DDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else if ("TranslateAxisDragger" == name)
> {
> osgManipulator::TranslateAxisDragger* d = new osgManipulator::TranslateAxisDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
> else
> {
> osgManipulator::TabBoxDragger* d = new osgManipulator::TabBoxDragger();
> d->setupDefaultGeometry();
> dragger = d;
> }
>
>
>
> return dragger;
> }
>
>
> osg::Node* addDraggerToScene(osg::Node* scene, const std::string& name)
> {
> scene->getOrCreateStateSet()->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
>
> osg::MatrixTransform* selection = new osg::MatrixTransform;
> selection->addChild(scene);
>
> osgManipulator::Dragger* dragger = createDragger(name);
>
>
> osg::Group* root = new osg::Group;
> root->addChild(dragger);
> root->addChild(selection);
>
> float scale = scene->getBound().radius() * 1.6;
> dragger->setMatrix(osg::Matrix::scale(scale, scale, scale) *
> osg::Matrix::translate(scene->getBound().center()));
>
> osgManipulator::GridConstraint *con = new osgManipulator::GridConstraint( *selection , osg::Vec3(0,0,0), osg::Vec3(30,30,30 ) ) ;
> osg::ref_ptr<osgManipulator::TabBoxDragger> m_pManipulator = new osgManipulator::TabBoxDragger;
> m_pManipulator->addConstraint( con);
>
> dragger->addConstraint(con);
> dragger->addTransformUpdating(selection);
>
> // we want the dragger to handle it's own events automatically
> dragger->setHandleEvents(true);
>
> // if we don't set an activation key or mod mask then any mouse click on
> // the dragger will activate it, however if do define either of ActivationModKeyMask or
> // and ActivationKeyEvent then you'll have to press either than mod key or the specified key to
> // be able to activate the dragger when you mouse click on it. Please note the follow allows
> // activation if either the ctrl key or the 'a' key is pressed and held down.
> dragger->setActivationModKeyMask(osgGA::GUIEventAdapter::MODKEY_CTRL);
> dragger->setActivationKeyEvent('a');
>
> return root;
> }
>
> osg::Node* createDemoScene() {
>
> osg::Group* root = new osg::Group;
>
> osg::ref_ptr<osg::Geode> geode_1 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_1 = new osg::MatrixTransform;
>
> osg::ref_ptr<osg::Geode> geode_2 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_2 = new osg::MatrixTransform;
>
> osg::ref_ptr<osg::Geode> geode_3 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_3 = new osg::MatrixTransform;
>
> osg::ref_ptr<osg::Geode> geode_4 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_4 = new osg::MatrixTransform;
>
> osg::ref_ptr<osg::Geode> geode_5 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_5 = new osg::MatrixTransform;
>
> osg::ref_ptr<osg::Geode> geode_6 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_6 = new osg::MatrixTransform;
>
> osg::ref_ptr<osg::Geode> geode_7 = new osg::Geode;
> osg::ref_ptr<osg::MatrixTransform> transform_7 = new osg::MatrixTransform;
>
>
>
>
>
> const float radius = 0.8f;
> const float height = 1.0f;
> osg::ref_ptr<osg::TessellationHints> hints = new osg::TessellationHints;
> hints->setDetailRatio(2.0f);
> osg::ref_ptr<osg::ShapeDrawable> shape;
>
> shape = new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0f, 0.0f, -2.0f), 10, 10.0f, 0.1f), hints.get());
> shape->setColor(osg::Vec4(0.5f, 0.5f, 0.7f, 1.0f));
> geode_1->addDrawable(shape.get());
>
> shape = new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(0.0f, 0.0f, 0.0f), radius * 2,radius), hints.get());
> shape->setColor(osg::Vec4(0.8f, 0.8f, 0.8f, 1.0f));
> geode_2->addDrawable(shape.get());
>
> shape = new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(-3.0f, 0.0f, 0.0f), radius,radius), hints.get());
> shape->setColor(osg::Vec4(0.6f, 0.8f, 0.8f, 1.0f));
> geode_3->addDrawable(shape.get());
>
> shape = new osg::ShapeDrawable(new osg::Cone(osg::Vec3(3.0f, 0.0f, 0.0f), 2 * radius,radius), hints.get());
> shape->setColor(osg::Vec4(0.4f, 0.9f, 0.3f, 1.0f));
> geode_4->addDrawable(shape.get());
>
> shape = new osg::ShapeDrawable(new osg::Cone(osg::Vec3(0.0f, -3.0f, 0.0f), radius, height), hints.get());
> shape->setColor(osg::Vec4(0.2f, 0.5f, 0.7f, 1.0f));
> geode_5->addDrawable(shape.get());
>
> shape = new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(0.0f, 3.0f, 0.0f), radius, height), hints.get());
> shape->setColor(osg::Vec4(1.0f, 0.3f, 0.3f, 1.0f));
> geode_6->addDrawable(shape.get());
>
> shape = new osg::ShapeDrawable(new osg::Cone(osg::Vec3(0.0f, 0.0f, 3.0f), 2.0f, 2.0f), hints.get());
> shape->setColor(osg::Vec4(0.8f, 0.8f, 0.4f, 1.0f));
> geode_7->addDrawable(shape.get());
>
>
>
>
>
>
> // material
> osg::ref_ptr<osg::Material> matirial = new osg::Material;
> matirial->setColorMode(osg::Material::DIFFUSE);
> matirial->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
> matirial->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(1, 1, 1, 1));
> matirial->setShininess(osg::Material::FRONT_AND_BACK, 64.0f);
> root->getOrCreateStateSet()->setAttributeAndModes(matirial.get(), osg::StateAttribute::ON);
>
> transform_1.get()->addChild(addDraggerToScene(geode_1.get(),"TabBoxDragger"));
> transform_2.get()->addChild(addDraggerToScene(geode_2.get(),"TabPlaneDragger"));
> transform_3.get()->addChild(addDraggerToScene(geode_3.get(),"TabBoxTrackballDragger"));
> transform_4.get()->addChild(addDraggerToScene(geode_4.get(),"TrackballDragger"));
> transform_5.get()->addChild(addDraggerToScene(geode_5.get(),"Translate1DDragger"));
> transform_6.get()->addChild(addDraggerToScene(geode_6.get(),"Translate2DDragger"));
> transform_7.get()->addChild(addDraggerToScene(geode_7.get(),"TranslateAxisDragger"));
>
> root->addChild(transform_1.get());
> root->addChild(transform_2.get());
> root->addChild(transform_3.get());
> root->addChild(transform_4.get());
> root->addChild(transform_5.get());
> root->addChild(transform_6.get());
> root->addChild(transform_7.get());
>
>
>
> return root;
> }
> //
> 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()->setApplicationName(arguments.getApplicationName());
> arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
> arguments.getApplicationUsage()->addCommandLineOption("--image <filename>","Load an image and render it on a quad");
> arguments.getApplicationUsage()->addCommandLineOption("--dem <filename>","Load an image/DEM and render it on a HeightField");
> arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display command line parameters");
> arguments.getApplicationUsage()->addCommandLineOption("--help-env","Display environmental variables available");
> arguments.getApplicationUsage()->addCommandLineOption("--help-keys","Display keyboard & mouse bindings available");
> arguments.getApplicationUsage()->addCommandLineOption("--help-all","Display all command line, env vars and keyboard & mouse bindings.");
>
> arguments.getApplicationUsage()->addCommandLineOption("--dragger <draggername>","Use the specified dragger for manipulation [TabPlaneDragger,TabPlaneTrackballDragger,TrackballDragger,Translate1DDragger,Translate2DDragger,TranslateAxisDragger,TabBoxDragger]");
>
>
> // construct the viewer.
> osgViewer::Viewer viewer;
>
> // get details on keyboard and mouse bindings used by the viewer.
> viewer.getUsage(*arguments.getApplicationUsage());
>
> // if user request help write it out to cout.
> bool helpAll = arguments.read("--help-all");
> unsigned int helpType = ((helpAll || arguments.read("-h") || arguments.read("--help"))? osg::ApplicationUsage::COMMAND_LINE_OPTION : 0 ) |
> ((helpAll || arguments.read("--help-env"))? osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE : 0 ) |
> ((helpAll || arguments.read("--help-keys"))? osg::ApplicationUsage::KEYBOARD_MOUSE_BINDING : 0 );
> if (helpType)
> {
> arguments.getApplicationUsage()->write(std::cout, helpType);
> return 1;
> }
>
> // report any errors if they have occurred when parsing the program arguments.
> if (arguments.errors())
> {
> arguments.writeErrorMessages(std::cout);
> return 1;
> }
>
> std::string dragger_name = "TabBoxDragger";
> arguments.read("--dragger", dragger_name);
>
> osg::Timer_t start_tick = osg::Timer::instance()->tick();
>
> // read the scene from the list of file specified command line args.
> osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
>
> // if no model has been successfully loaded report failure.
> bool tragger2Scene(true);
> if (!loadedModel)
> {
> //std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
> //return 1;
> loadedModel = createDemoScene();
> tragger2Scene=false;
> }
>
> // any option left unread are converted into errors to write out later.
> arguments.reportRemainingOptionsAsUnrecognized();
>
> // report any errors if they have occurred when parsing the program arguments.
> if (arguments.errors())
> {
> arguments.writeErrorMessages(std::cout);
> }
>
> osg::Timer_t end_tick = osg::Timer::instance()->tick();
>
> std::cout << "Time to load = "<<osg::Timer::instance()->delta_s(start_tick,end_tick)<<std::endl;
>
>
> // optimize the scene graph, remove redundant nodes and state etc.
> osgUtil::Optimizer optimizer;
> optimizer.optimize(loadedModel.get());
>
>
> // pass the loaded scene graph to the viewer.
> if ( tragger2Scene ) {
> viewer.setSceneData(addDraggerToScene(loadedModel.get(), dragger_name));
> } else {
> viewer.setSceneData(loadedModel.get());
> }
>
>
> return viewer.run();
> }
>
>
>
>
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=20232#20232
>
>
>
>
>
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