Intergrated Martin Kada's impostor test program with the old test
program.
This commit is contained in:
Robert Osfield
parent
71bea99ba2
commit
93f3378b86
@ -2,6 +2,7 @@ TOPDIR = ../../..
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include $(TOPDIR)/Make/makedefs
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CXXFILES =\
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TestManipulator.cpp\
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osgimpostor.cpp\
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LIBS += $(OSG_LIBS) $(GLUT_LIB) $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS)
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@ -1,26 +0,0 @@
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Note: Using sgv with Peformer (for IRIX and Linux users only)
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=============================================================
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If you find problems with loading .pfb files its likely that its due to undefined
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symbols. This isn't a problem with the OSG implementation, but alas the only
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current solution is to directly link you app with the Performer libraries. The
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Makefile contains two library list. In Makefile you'll see something like :
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#note, use this library list when using the Performer osgPlugin.
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#LIBS = ${PFLIBS} -losgGLUT -losgDB -losg -lGLU -lGL -lm -lXmu -lX11 -lXi
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#note, standard library list.
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LIBS = -losgGLUT -losgDB -losg -lGLU -lGL -lm -lXmu -lX11 -lXi
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Simple comment in the LIBS line with PFLIBS and comment out the standard LIBS,
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then :
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make clean
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make
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Hopefully the Performer distribution will eventually work as a dynamic plugin
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but until that day we're stuck with this 'hack'...
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Robert Osfield,
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March 2001.
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385
src/Demos/osgimpostor/TestManipulator.cpp
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385
src/Demos/osgimpostor/TestManipulator.cpp
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@ -0,0 +1,385 @@
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#include "TestManipulator.h"
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#include <osg/Types>
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#include <osg/Notify>
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using namespace osg;
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using namespace osgGA;
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TestManipulator::TestManipulator()
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{
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_modelScale = 0.01f;
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_minimumZoomScale = 0.05f;
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_thrown = false;
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_distance = 1.0f;
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}
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TestManipulator::~TestManipulator()
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{
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}
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void TestManipulator::setNode(osg::Node* node)
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{
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_node = node;
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if (_node.get())
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{
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const osg::BoundingSphere& boundingSphere=_node->getBound();
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_modelScale = boundingSphere._radius;
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}
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}
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const osg::Node* TestManipulator::getNode() const
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{
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return _node.get();
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}
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osg::Node* TestManipulator::getNode()
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{
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return _node.get();
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}
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/*ea*/
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void TestManipulator::home(const GUIEventAdapter& ,GUIActionAdapter& us)
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{
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if(_node.get() && _camera.get())
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{
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const osg::BoundingSphere& boundingSphere=_node->getBound();
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_camera->setView(
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osg::Vec3(0.0f, 0.0f, 20.0f),
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osg::Vec3(0.0f, 1.0f, 20.0f),
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osg::Vec3(0.0f, 0.0f, 1.0f));
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computeLocalDataFromCamera();
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us.requestRedraw();
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}
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}
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void TestManipulator::init(const GUIEventAdapter& ,GUIActionAdapter& )
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{
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flushMouseEventStack();
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computeLocalDataFromCamera();
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}
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bool TestManipulator::handle(const GUIEventAdapter& ea,GUIActionAdapter& us)
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{
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if(!_camera.get()) return false;
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switch(ea.getEventType())
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{
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case(GUIEventAdapter::PUSH):
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{
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flushMouseEventStack();
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addMouseEvent(ea);
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if (calcMovement()) us.requestRedraw();
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us.requestContinuousUpdate(false);
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_thrown = false;
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return true;
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}
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case(GUIEventAdapter::RELEASE):
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{
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if (ea.getButtonMask()==0)
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{
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if (isMouseMoving())
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{
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if (calcMovement())
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{
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us.requestRedraw();
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us.requestContinuousUpdate(true);
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_thrown = true;
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}
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}
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else
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{
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flushMouseEventStack();
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addMouseEvent(ea);
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if (calcMovement()) us.requestRedraw();
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us.requestContinuousUpdate(false);
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_thrown = false;
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}
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}
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else
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{
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flushMouseEventStack();
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addMouseEvent(ea);
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if (calcMovement()) us.requestRedraw();
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us.requestContinuousUpdate(false);
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_thrown = false;
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}
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return true;
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}
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case(GUIEventAdapter::DRAG):
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{
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addMouseEvent(ea);
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if (calcMovement()) us.requestRedraw();
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us.requestContinuousUpdate(false);
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_thrown = false;
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return true;
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}
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case(GUIEventAdapter::MOVE):
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{
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return false;
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}
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case(GUIEventAdapter::KEYBOARD):
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if (ea.getKey()==' ')
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{
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flushMouseEventStack();
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_thrown = false;
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home(ea,us);
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us.requestRedraw();
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us.requestContinuousUpdate(false);
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return true;
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} else if (ea.getKey()=='+')
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{
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_camera->setFusionDistanceRatio(_camera->getFusionDistanceRatio()*1.25f);
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return true;
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}
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else if (ea.getKey()=='-')
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{
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_camera->setFusionDistanceRatio(_camera->getFusionDistanceRatio()/1.25f);
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return true;
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}
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// this is quick hack to test out othographic projection.
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// else if (ea.getKey()=='O')
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// {
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// float dist = _camera->getLookDistance();
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// _camera->setOrtho(-dist,dist,-dist,dist,-dist,dist);
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// return true;
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// }
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return false;
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case(GUIEventAdapter::FRAME):
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_camera->setFusionDistanceMode(osg::Camera::PROPORTIONAL_TO_LOOK_DISTANCE);
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if (_thrown)
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{
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if (calcMovement()) us.requestRedraw();
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return true;
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}
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return false;
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default:
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return false;
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}
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}
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bool TestManipulator::isMouseMoving()
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{
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if (_ga_t0.get()==NULL || _ga_t1.get()==NULL) return false;
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static const float velocity = 100.0f;
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float dx = _ga_t0->getX()-_ga_t1->getX();
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float dy = _ga_t0->getY()-_ga_t1->getY();
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float len = sqrtf(dx*dx+dy*dy);
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float dt = _ga_t0->time()-_ga_t1->time();
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return (len>dt*velocity);
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}
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void TestManipulator::flushMouseEventStack()
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{
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_ga_t1 = NULL;
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_ga_t0 = NULL;
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}
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void TestManipulator::addMouseEvent(const GUIEventAdapter& ea)
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{
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_ga_t1 = _ga_t0;
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_ga_t0 = &ea;
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}
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void TestManipulator::computeLocalDataFromCamera()
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{
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// maths from gluLookAt/osg::Matrix::makeLookAt
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osg::Vec3 f(_camera->getCenterPoint()-_camera->getEyePoint());
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f.normalize();
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osg::Vec3 s(f^_camera->getUpVector());
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s.normalize();
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osg::Vec3 u(s^f);
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u.normalize();
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osg::Matrix rotation_matrix(s[0], u[0], -f[0], 0.0f,
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s[1], u[1], -f[1], 0.0f,
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s[2], u[2], -f[2], 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f);
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_center = _camera->getCenterPoint();
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_distance = _camera->getLookDistance();
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_rotation.set(rotation_matrix);
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_rotation = _rotation.inverse();
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}
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void TestManipulator::computeCameraFromLocalData()
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{
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osg::Matrix new_rotation;
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new_rotation.makeRotate(_rotation);
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osg::Vec3 up = osg::Vec3(0.0f,1.0f,0.0) * new_rotation;
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osg::Vec3 eye = (osg::Vec3(0.0f,0.0f,_distance) * new_rotation) + _center;
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_camera->setLookAt(eye,_center,up);
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}
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bool TestManipulator::calcMovement()
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{
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// return if less then two events have been added.
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if (_ga_t0.get()==NULL || _ga_t1.get()==NULL) return false;
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float dx = _ga_t0->getX()-_ga_t1->getX();
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float dy = _ga_t0->getY()-_ga_t1->getY();
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// return if there is no movement.
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if (dx==0 && dy==0) return false;
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float focalLength = (_camera->getCenterPoint()-_camera->getEyePoint()).length();
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unsigned int buttonMask = _ga_t1->getButtonMask();
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if (buttonMask==GUIEventAdapter::LEFT_MOUSE_BUTTON)
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{
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// rotate camera.
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float rx0 = (_ga_t0->getXmax()-_ga_t0->getXmin())/2.0f;
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osg::Quat new_rotate;
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float xRot = dx / rx0;
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new_rotate.makeRotate(xRot / 5.0f, osg::Vec3(0.0f, 0.0f, 1.0f));
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_rotation = _rotation*new_rotate;
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computeCameraFromLocalData();
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return true;
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}
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else if (buttonMask==GUIEventAdapter::MIDDLE_MOUSE_BUTTON)
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{
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// pan model.
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osg::Vec3 dv = osg::Vec3(0.0f, 0.0f, 1.0f) * dy;
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_center += dv;
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computeCameraFromLocalData();
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return true;
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}
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else if (buttonMask==GUIEventAdapter::RIGHT_MOUSE_BUTTON)
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{
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osg::Vec3 uv = _camera->getUpVector();
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osg::Vec3 sv = _camera->getSideVector();
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osg::Vec3 fv = uv ^ sv;
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osg::Vec3 dv = fv*dy-sv*dx;
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_center += dv;
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computeCameraFromLocalData();
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return true;
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}
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return false;
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}
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/*
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* This size should really be based on the distance from the center of
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* rotation to the point on the object underneath the mouse. That
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* point would then track the mouse as closely as possible. This is a
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* simple example, though, so that is left as an Exercise for the
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* Programmer.
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*/
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const float TRACKBALLSIZE = 0.8f;
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/*
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* Ok, simulate a track-ball. Project the points onto the virtual
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* trackball, then figure out the axis of rotation, which is the cross
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* product of P1 P2 and O P1 (O is the center of the ball, 0,0,0)
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* Note: This is a deformed trackball-- is a trackball in the center,
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* but is deformed into a hyperbolic sheet of rotation away from the
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* center. This particular function was chosen after trying out
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* several variations.
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*
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* It is assumed that the arguments to this routine are in the range
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* (-1.0 ... 1.0)
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*/
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void TestManipulator::trackball(osg::Vec3& axis,float& angle, float p1x, float p1y, float p2x, float p2y)
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{
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/*
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* First, figure out z-coordinates for projection of P1 and P2 to
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* deformed sphere
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*/
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osg::Vec3 uv = _camera->getUpVector();
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osg::Vec3 sv = _camera->getSideVector();
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osg::Vec3 lv = _camera->getLookVector();
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osg::Vec3 p1 = sv*p1x+uv*p1y-lv*tb_project_to_sphere(TRACKBALLSIZE,p1x,p1y);
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osg::Vec3 p2 = sv*p2x+uv*p2y-lv*tb_project_to_sphere(TRACKBALLSIZE,p2x,p2y);
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/*
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* Now, we want the cross product of P1 and P2
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*/
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axis = p2^p1;
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axis.normalize();
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/*
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* Figure out how much to rotate around that axis.
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*/
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float t = (p2-p1).length() / (2.0*TRACKBALLSIZE);
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/*
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* Avoid problems with out-of-control values...
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*/
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if (t > 1.0) t = 1.0;
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if (t < -1.0) t = -1.0;
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angle = inRadians(asin(t));
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}
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/*
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* Project an x,y pair onto a sphere of radius r OR a hyperbolic sheet
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* if we are away from the center of the sphere.
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*/
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float TestManipulator::tb_project_to_sphere(float r, float x, float y)
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{
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float d, t, z;
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d = sqrt(x*x + y*y);
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/* Inside sphere */
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if (d < r * 0.70710678118654752440)
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{
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z = sqrt(r*r - d*d);
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} /* On hyperbola */
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else
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{
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t = r / 1.41421356237309504880;
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z = t*t / d;
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}
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return z;
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}
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84
src/Demos/osgimpostor/TestManipulator.h
Normal file
84
src/Demos/osgimpostor/TestManipulator.h
Normal file
@ -0,0 +1,84 @@
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//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSGGA_TESTMANIPULATOR
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#define OSGGA_TESTMANIPULATOR 1
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#include <osgGA/CameraManipulator>
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namespace osgGA{
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class TestManipulator : public CameraManipulator
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{
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public:
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TestManipulator();
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virtual ~TestManipulator();
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/** Attach a node to the manipulator.
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Automatically detaches previously attached node.
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setNode(NULL) detaches previously nodes.
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Is ignored by manipulators which do not require a reference model.*/
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virtual void setNode(osg::Node*);
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/** Return node if attached.*/
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virtual const osg::Node* getNode() const;
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/** Return node if attached.*/
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virtual osg::Node* getNode();
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/** Move the camera to the default position.
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May be ignored by manipulators if home functionality is not appropriate.*/
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virtual void home(const GUIEventAdapter& ea,GUIActionAdapter& us);
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/** Start/restart the manipulator.*/
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virtual void init(const GUIEventAdapter& ea,GUIActionAdapter& us);
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/** handle events, return true if handled, false otherwise.*/
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virtual bool handle(const GUIEventAdapter& ea,GUIActionAdapter& us);
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private:
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/** Reset the internal GUIEvent stack.*/
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void flushMouseEventStack();
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/** Add the current mouse GUIEvent to internal stack.*/
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void addMouseEvent(const GUIEventAdapter& ea);
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void computeLocalDataFromCamera();
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void computeCameraFromLocalData();
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/** For the give mouse movement calculate the movement of the camera.
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Return true is camera has moved and a redraw is required.*/
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bool calcMovement();
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void trackball(osg::Vec3& axis,float& angle, float p1x, float p1y, float p2x, float p2y);
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float tb_project_to_sphere(float r, float x, float y);
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/** Check the speed at which the mouse is moving.
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If speed is below a threshold then return false, otherwise return true.*/
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bool isMouseMoving();
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// Internal event stack comprising last three mouse events.
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osg::ref_ptr<const GUIEventAdapter> _ga_t1;
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osg::ref_ptr<const GUIEventAdapter> _ga_t0;
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osg::ref_ptr<osg::Node> _node;
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float _modelScale;
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float _minimumZoomScale;
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bool _thrown;
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osg::Vec3 _center;
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osg::Quat _rotation;
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float _distance;
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};
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}
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#endif
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@ -1,146 +1,295 @@
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#include <osg/Geometry>
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#include <osg/Impostor>
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#include <osg/Notify>
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#include <osg/Material>
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#include <osg/MatrixTransform>
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#include <osg/Quat>
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#include <osgUtil/InsertImpostorsVisitor>
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#include <osgDB/Registry>
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#include <osgDB/ReadFile>
|
||||
|
||||
#include <osgGA/TrackballManipulator>
|
||||
#include <osgGA/FlightManipulator>
|
||||
#include <osgGA/DriveManipulator>
|
||||
#include <osgUtil/InsertImpostorsVisitor>
|
||||
|
||||
#include <osgGLUT/glut>
|
||||
#include <osgGLUT/Viewer>
|
||||
|
||||
#include <osg/Quat>
|
||||
#include "TestManipulator.h"
|
||||
|
||||
void write_usage(std::ostream& out,const std::string& name)
|
||||
|
||||
#include <iostream>
|
||||
#include <list>
|
||||
|
||||
// container storing all house nodes
|
||||
typedef osg::ref_ptr<osg::Node> NodePtr;
|
||||
typedef std::list<NodePtr> NodeContainer;
|
||||
typedef NodeContainer::iterator NodeIterator;
|
||||
|
||||
NodeContainer nodes;
|
||||
|
||||
//
|
||||
osg::Group * Root = 0;
|
||||
|
||||
const int HOUSES_SIZE = 25000; // total number of houses
|
||||
double XDim = 5000.0f; // area dimension +/- XDim
|
||||
double ZDim = 5000.0f; // area dimension +/- YDim
|
||||
|
||||
int GridX = 20; // number of grids in x direction
|
||||
int GridY = 20; // number of grids in y direction
|
||||
|
||||
bool UseImpostor = true; // use impostor (or do not use)
|
||||
|
||||
float Threshold = 3000.0f; // distance where impostor are shown
|
||||
|
||||
// create houses and store nodes in container
|
||||
void CreateHouses()
|
||||
{
|
||||
out << std::endl;
|
||||
out <<"usage:"<< std::endl;
|
||||
out <<" "<<name<<" [options] infile1 [infile2 ...]"<< std::endl;
|
||||
out << std::endl;
|
||||
out <<"options:"<< std::endl;
|
||||
out <<" -l libraryName - load plugin of name libraryName"<< std::endl;
|
||||
out <<" i.e. -l osgdb_pfb"<< std::endl;
|
||||
out <<" Useful for loading reader/writers which can load"<< std::endl;
|
||||
out <<" other file formats in addition to its extension."<< std::endl;
|
||||
out <<" -e extensionName - load reader/wrter plugin for file extension"<< std::endl;
|
||||
out <<" i.e. -e pfb"<< std::endl;
|
||||
out <<" Useful short hand for specifying full library name as"<< std::endl;
|
||||
out <<" done with -l above, as it automatically expands to"<< std::endl;
|
||||
out <<" the full library name appropriate for each platform."<< std::endl;
|
||||
out <<std::endl;
|
||||
out <<" -stereo - switch on stereo rendering, using the default of,"<< std::endl;
|
||||
out <<" ANAGLYPHIC or the value set in the OSG_STEREO_MODE "<< std::endl;
|
||||
out <<" environmental variable. See doc/stereo.html for "<< std::endl;
|
||||
out <<" further details on setting up accurate stereo "<< std::endl;
|
||||
out <<" for your system. "<< std::endl;
|
||||
out <<" -stereo ANAGLYPHIC - switch on anaglyphic(red/cyan) stereo rendering."<< std::endl;
|
||||
out <<" -stereo QUAD_BUFFER - switch on quad buffered stereo rendering."<< std::endl;
|
||||
out <<std::endl;
|
||||
out <<" -stencil - use a visual with stencil buffer enabled, this "<< std::endl;
|
||||
out <<" also allows the depth complexity statistics mode"<< std::endl;
|
||||
out <<" to be used (press 'p' three times to cycle to it)."<< std::endl;
|
||||
out << std::endl;
|
||||
int i;
|
||||
|
||||
GLubyte indices[48] = {
|
||||
0, 2, 1,
|
||||
3, 2, 0,
|
||||
0, 4, 7,
|
||||
7, 3, 0,
|
||||
0, 1, 5,
|
||||
5, 4, 0,
|
||||
1, 6, 5,
|
||||
2, 6, 1,
|
||||
2, 3, 7,
|
||||
2, 7, 6,
|
||||
4, 8, 7,
|
||||
5, 6, 9,
|
||||
4, 5, 8,
|
||||
8, 5, 9,
|
||||
6, 7, 8,
|
||||
8, 9, 6
|
||||
};
|
||||
|
||||
// use the same color, normal and indices for all houses.
|
||||
osg::Vec4Array* colors = new osg::Vec4Array(1);
|
||||
(*colors)[0] = osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f);
|
||||
|
||||
// normals
|
||||
osg::Vec3Array * normals = new osg::Vec3Array(16);
|
||||
(*normals)[0] = osg::Vec3( 0.0f, -0.0f, -1.0f);
|
||||
(*normals)[1] = osg::Vec3( 0.0f, -0.0f, -1.0f);
|
||||
(*normals)[2] = osg::Vec3( 0.0f, -1.0f, 0.0f);
|
||||
(*normals)[3] = osg::Vec3( 0.0f, -1.0f, 0.0f);
|
||||
(*normals)[4] = osg::Vec3( 1.0f, -0.0f, 0.0f);
|
||||
(*normals)[5] = osg::Vec3( 1.0f, -0.0f, 0.0f);
|
||||
(*normals)[6] = osg::Vec3( 0.0f, 1.0f, 0.0f);
|
||||
(*normals)[7] = osg::Vec3( 0.0f, 1.0f, 0.0f);
|
||||
(*normals)[8] = osg::Vec3(-1.0f, -0.0f, 0.0f);
|
||||
(*normals)[9] = osg::Vec3(-1.0f, -0.0f, 0.0f);
|
||||
(*normals)[10] = osg::Vec3( 0.0f, -0.928477f, 0.371391f);
|
||||
(*normals)[11] = osg::Vec3( 0.0f, 0.928477f, 0.371391f);
|
||||
(*normals)[12] = osg::Vec3( 0.707107f, 0.0f, 0.707107f);
|
||||
(*normals)[13] = osg::Vec3( 0.707107f, 0.0f, 0.707107f);
|
||||
(*normals)[14] = osg::Vec3(-0.707107f, 0.0f, 0.707107f);
|
||||
(*normals)[15] = osg::Vec3(-0.707107f, 0.0f, 0.707107f);
|
||||
|
||||
// coordIndices
|
||||
osg::UByteArray* coordIndices = new osg::UByteArray(48,indices);
|
||||
|
||||
// share the primtive set.
|
||||
osg::PrimitiveSet* primitives = new osg::DrawArrays(osg::PrimitiveSet::TRIANGLES,0,48);
|
||||
|
||||
for (int q = 0; q < HOUSES_SIZE; q++)
|
||||
{
|
||||
float xPos = ((static_cast<double> (rand()) /
|
||||
static_cast<double> (RAND_MAX))
|
||||
* 2.0 * XDim) - XDim;
|
||||
|
||||
float yPos = ((static_cast<double> (rand()) /
|
||||
static_cast<double> (RAND_MAX))
|
||||
* 2 * ZDim) - ZDim;
|
||||
|
||||
float scale = 10.0f;
|
||||
|
||||
osg::Vec3 offset(xPos,yPos,0.0f);
|
||||
|
||||
// coords
|
||||
osg::Vec3Array* coords = new osg::Vec3Array(10);
|
||||
(*coords)[0] = osg::Vec3( 0.5f, -0.7f, 0.0f);
|
||||
(*coords)[1] = osg::Vec3( 0.5f, 0.7f, 0.0f);
|
||||
(*coords)[2] = osg::Vec3(-0.5f, 0.7f, 0.0f);
|
||||
(*coords)[3] = osg::Vec3(-0.5f, -0.7f, 0.0f);
|
||||
(*coords)[4] = osg::Vec3( 0.5f, -0.7f, 1.0f);
|
||||
(*coords)[5] = osg::Vec3( 0.5f, 0.7f, 1.0f);
|
||||
(*coords)[6] = osg::Vec3(-0.5f, 0.7f, 1.0f);
|
||||
(*coords)[7] = osg::Vec3(-0.5f, -0.7f, 1.0f);
|
||||
(*coords)[8] = osg::Vec3( 0.0f, -0.5f, 1.5f);
|
||||
(*coords)[9] = osg::Vec3( 0.0f, 0.5f, 1.5f);
|
||||
|
||||
for (i = 0; i < 10; i++)
|
||||
{
|
||||
(*coords)[i] = (*coords)[i] * scale + offset;
|
||||
}
|
||||
|
||||
|
||||
// create geometry
|
||||
osg::Geometry * geometry = new osg::Geometry();
|
||||
|
||||
geometry->addPrimitiveSet(primitives);
|
||||
|
||||
geometry->setVertexArray(coords);
|
||||
geometry->setVertexIndices(coordIndices);
|
||||
|
||||
geometry->setColorArray(colors);
|
||||
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
|
||||
|
||||
geometry->setNormalArray(normals);
|
||||
geometry->setNormalBinding(osg::Geometry::BIND_PER_PRIMITIVE);
|
||||
|
||||
osg::Geode * geode = new osg::Geode();
|
||||
geode->addDrawable(geometry);
|
||||
|
||||
nodes.push_back(geode);
|
||||
}
|
||||
}
|
||||
|
||||
void LayoutAsGrid()
|
||||
{
|
||||
// calculate bounding box
|
||||
osg::BoundingBox bbox;
|
||||
for (NodeIterator node = nodes.begin(); node != nodes.end(); ++node)
|
||||
bbox.expandBy((*node)->getBound());
|
||||
|
||||
// setup grid information
|
||||
osg::Group ** groups = new osg::Group*[GridX * GridY];
|
||||
for (int i = 0; i < GridX * GridY; i++)
|
||||
groups[i] = new osg::Group();
|
||||
|
||||
float xGridStart = bbox.xMin();
|
||||
float xGridSize = (bbox.xMax() - bbox.xMin()) / GridX;
|
||||
|
||||
float yGridStart = bbox.yMin();
|
||||
float yGridSize = (bbox.yMax() - bbox.yMin()) / GridY;
|
||||
|
||||
// arrange buildings into right grid
|
||||
for (NodeIterator nodeIter = nodes.begin(); nodeIter != nodes.end(); ++nodeIter)
|
||||
{
|
||||
osg::Node * node = nodeIter->get();
|
||||
osg::Vec3 center = node->getBound().center();
|
||||
|
||||
int x = (int)floor((center.x() - xGridStart) / xGridSize);
|
||||
int z = (int)floor((center.y() - yGridStart) / yGridSize);
|
||||
|
||||
groups[z * GridX + x]->addChild(node);
|
||||
}
|
||||
|
||||
// add nodes to building root
|
||||
for (int i = 0; i < GridX * GridY; i++)
|
||||
{
|
||||
osg::StateSet * stateset = new osg::StateSet();
|
||||
|
||||
osg::Material * material = new osg::Material();
|
||||
osg::Vec4 color = osg::Vec4(
|
||||
0.5f + (static_cast<double> (rand()) / (2.0*static_cast<double> (RAND_MAX))),
|
||||
0.5f + (static_cast<double> (rand()) / (2.0*static_cast<double> (RAND_MAX))),
|
||||
0.5f + (static_cast<double> (rand()) / ( 2.0*static_cast<double>(RAND_MAX))),
|
||||
1.0f);
|
||||
|
||||
material->setAmbient(osg::Material::FRONT_AND_BACK, color);
|
||||
material->setDiffuse(osg::Material::FRONT_AND_BACK, color);
|
||||
stateset->setAttributeAndModes(material, osg::StateAttribute::ON);
|
||||
|
||||
groups[i]->setStateSet(stateset);
|
||||
|
||||
if (UseImpostor)
|
||||
{
|
||||
osg::Impostor * impostor = new osg::Impostor();
|
||||
impostor->setImpostorThreshold(static_cast<float> (Threshold));
|
||||
impostor->addChild(groups[i]);
|
||||
impostor->setRange(0, 0.0f, 1e7f);
|
||||
impostor->setCenter(groups[i]->getBound().center());
|
||||
Root->addChild(impostor);
|
||||
}
|
||||
else
|
||||
{
|
||||
Root->addChild(groups[i]);
|
||||
}
|
||||
}
|
||||
|
||||
delete[] groups;
|
||||
}
|
||||
|
||||
|
||||
int main( int argc, char **argv )
|
||||
{
|
||||
|
||||
// initialize the GLUT
|
||||
glutInit( &argc, argv );
|
||||
|
||||
if (argc<2)
|
||||
{
|
||||
write_usage(osg::notify(osg::NOTICE),argv[0]);
|
||||
return 0;
|
||||
}
|
||||
osgGLUT::Viewer viewer;
|
||||
|
||||
// create the commandline args.
|
||||
std::vector<std::string> commandLine;
|
||||
for(int i=1;i<argc;++i) commandLine.push_back(argv[i]);
|
||||
|
||||
osg::Timer timer;
|
||||
osg::Timer_t before_load = timer.tick();
|
||||
|
||||
// initialize the viewer.
|
||||
osgGLUT::Viewer viewer;
|
||||
viewer.setWindowTitle(argv[0]);
|
||||
|
||||
// configure the viewer from the commandline arguments, and eat any
|
||||
// parameters that have been matched.
|
||||
viewer.readCommandLine(commandLine);
|
||||
|
||||
// configure the plugin registry from the commandline arguments, and
|
||||
// eat any parameters that have been matched.
|
||||
osgDB::readCommandLine(commandLine);
|
||||
|
||||
// load the nodes from the commandline arguments.
|
||||
osg::Node* model = osgDB::readNodeFiles(commandLine);
|
||||
if (!model)
|
||||
if (model)
|
||||
{
|
||||
// write_usage(osg::notify(osg::NOTICE),argv[0]);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
// the osgUtil::InsertImpostorsVisitor used lower down to insert impostors
|
||||
// only operators on subclass of Group's, if the model top node is not
|
||||
// a group then it won't be able to insert an impostor. We therefore
|
||||
// manually insert an impostor above the model.
|
||||
if (dynamic_cast<osg::Group*>(model)==0)
|
||||
{
|
||||
const osg::BoundingSphere& bs = model->getBound();
|
||||
if (bs.valid())
|
||||
// the osgUtil::InsertImpostorsVisitor used lower down to insert impostors
|
||||
// only operators on subclass of Group's, if the model top node is not
|
||||
// a group then it won't be able to insert an impostor. We therefore
|
||||
// manually insert an impostor above the model.
|
||||
if (dynamic_cast<osg::Group*>(model)==0)
|
||||
{
|
||||
const osg::BoundingSphere& bs = model->getBound();
|
||||
if (bs.valid())
|
||||
{
|
||||
|
||||
osg::Impostor* impostor = new osg::Impostor;
|
||||
osg::Impostor* impostor = new osg::Impostor;
|
||||
|
||||
// standard LOD settings
|
||||
impostor->addChild(model);
|
||||
impostor->setRange(0,0.0f,1e7f);
|
||||
impostor->setCenter(bs.center());
|
||||
// standard LOD settings
|
||||
impostor->addChild(model);
|
||||
impostor->setRange(0,0.0f,1e7f);
|
||||
impostor->setCenter(bs.center());
|
||||
|
||||
// impostor specfic settings.
|
||||
impostor->setImpostorThresholdToBound(5.0f);
|
||||
|
||||
model = impostor;
|
||||
// impostor specfic settings.
|
||||
impostor->setImpostorThresholdToBound(5.0f);
|
||||
|
||||
model = impostor;
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// we insert an impostor node above the model, so we keep a handle
|
||||
// on the rootnode of the model, the is required since the
|
||||
// InsertImpostorsVisitor can add a new root in automatically and
|
||||
// we would know about it, other than by following the parent path
|
||||
// up from model. This is really what should be done, but I'll pass
|
||||
// on it right now as it requires a getRoots() method to be added to
|
||||
// osg::Node, and we're about to make a release so no new features!
|
||||
osg::Group* rootnode = new osg::Group;
|
||||
rootnode->addChild(model);
|
||||
|
||||
|
||||
// now insert impostors in the model using the InsertImpostorsVisitor.
|
||||
osgUtil::InsertImpostorsVisitor ov;
|
||||
|
||||
// traverse the model and collect all osg::Group's and osg::LOD's.
|
||||
// however, don't traverse the rootnode since we want to keep it as
|
||||
// the start of traversal, otherwise the insertImpostor could insert
|
||||
// and Impostor above the current root, making it nolonger a root!
|
||||
model->accept(ov);
|
||||
|
||||
// insert the Impostors above groups and LOD's
|
||||
ov.insertImpostors();
|
||||
|
||||
|
||||
osg::Timer_t after_load = timer.tick();
|
||||
std::cout << "Time for load = "<<timer.delta_s(before_load,after_load)<<" seconds"<< std::endl;
|
||||
// we insert an impostor node above the model, so we keep a handle
|
||||
// on the rootnode of the model, the is required since the
|
||||
// InsertImpostorsVisitor can add a new root in automatically and
|
||||
// we would know about it, other than by following the parent path
|
||||
// up from model. This is really what should be done, but I'll pass
|
||||
// on it right now as it requires a getRoots() method to be added to
|
||||
// osg::Node, and we're about to make a release so no new features!
|
||||
osg::Group* rootnode = new osg::Group;
|
||||
rootnode->addChild(model);
|
||||
|
||||
|
||||
// now insert impostors in the model using the InsertImpostorsVisitor.
|
||||
osgUtil::InsertImpostorsVisitor ov;
|
||||
|
||||
// traverse the model and collect all osg::Group's and osg::LOD's.
|
||||
// however, don't traverse the rootnode since we want to keep it as
|
||||
// the start of traversal, otherwise the insertImpostor could insert
|
||||
// and Impostor above the current root, making it nolonger a root!
|
||||
model->accept(ov);
|
||||
|
||||
// insert the Impostors above groups and LOD's
|
||||
ov.insertImpostors();
|
||||
}
|
||||
else
|
||||
{
|
||||
// no user model so we'll create our own world.
|
||||
model = Root = new osg::Group();
|
||||
CreateHouses();
|
||||
LayoutAsGrid();
|
||||
}
|
||||
|
||||
// add model to viewer.
|
||||
viewer.addViewport( rootnode );
|
||||
viewer.addViewport(model);
|
||||
|
||||
// register trackball, flight and drive.
|
||||
viewer.registerCameraManipulator(new osgGA::TestManipulator);
|
||||
viewer.registerCameraManipulator(new osgGA::TrackballManipulator);
|
||||
viewer.registerCameraManipulator(new osgGA::FlightManipulator);
|
||||
viewer.registerCameraManipulator(new osgGA::DriveManipulator);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user