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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