FGFS-4.1/OpenSceneGraph
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Added help support for display help on screen to osgProducer::Viewer.

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This commit is contained in:
Robert Osfield
2003-03-26 12:50:30 +00:00
parent e00b8f2868
commit 8779fe20a7
18 changed files with 370 additions and 39 deletions
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14
src/osg/ApplicationUsage.cpp
View File

@@ -45,7 +45,7 @@ void ApplicationUsage::addKeyboardMouseBinding(const std::string& option,const s
_keyboardMouse[option]=explanation;
}
void ApplicationUsage::write(std::ostream& output, const ApplicationUsage::UsageMap& um,unsigned int widthOfOutput)
void ApplicationUsage::getFormatedString(std::string& str, const UsageMap& um,unsigned int widthOfOutput)
{
unsigned int maxNumCharsInOptions = 0;
ApplicationUsage::UsageMap::const_iterator citr;
@@ -125,9 +125,8 @@ void ApplicationUsage::write(std::ostream& output, const ApplicationUsage::Usage
}
line.replace(explanationPos+offset,explanationWidth, explanation, pos, width);
if (concatinated) output << line << '-' << std::endl;
else output << line << std::endl;
if (concatinated) { str += line; str += "-\n"; }
else { str += line; str += "\n"; }
// move to the next line of output.
line.assign(fullWidth,' ');
@@ -139,6 +138,13 @@ void ApplicationUsage::write(std::ostream& output, const ApplicationUsage::Usage
}
}
void ApplicationUsage::write(std::ostream& output, const ApplicationUsage::UsageMap& um,unsigned int widthOfOutput)
{
std::string str;
getFormatedString(str, um, widthOfOutput);
output << str << std::endl;
}
void ApplicationUsage::write(std::ostream& output,unsigned int widthOfOutput)
{

2
src/osgProducer/GNUmakefile
View File

@@ -10,7 +10,7 @@ CXXFILES =\
ViewerEventHandler.cpp\
Viewer.cpp\
LIBS += -lProducer $(GL_LIBS) -losgGA -losgUtil -losgDB -losg $(OTHER_LIBS)
LIBS += -lProducer $(GL_LIBS) -losgText -losgGA -losgUtil -losgDB -losg $(OTHER_LIBS)
DEF += -DOSGPRODUCER_LIBRARY
INC += -I/usr/X11R6/include
TARGET_BASENAME = osgProducer

8
src/osgProducer/OsgCameraGroup.cpp
View File

@@ -33,13 +33,9 @@ public:
virtual void operator()( const Producer::RenderSurface & rs)
{
if (_cameraGroup)
if (_cameraGroup->getRealizeCallback())
{
if (_cameraGroup->getRealizeCallback())
{
(*(_cameraGroup->getRealizeCallback()))(rs,_cameraGroup,_sceneHandler);
}
else if (_sceneHandler) _sceneHandler->init();
(*(_cameraGroup->getRealizeCallback()))(*_cameraGroup,*_sceneHandler,rs);
}
else if (_sceneHandler) _sceneHandler->init();
}

8
src/osgProducer/OsgSceneHandler.cpp
View File

@@ -38,12 +38,12 @@ void OsgSceneHandler::init()
osg::notify(osg::INFO)<<" unlocked "<<this<<" init."<<std::endl;
}
void OsgSceneHandler::clear(Producer::Camera& /*camera*/)
void OsgSceneHandler::clearImplementation(Producer::Camera& /*camera*/)
{
// no-op right now as scene view manages its own cleaer.
// no-op right now as scene view manages its own clear.
}
void OsgSceneHandler::cull(Producer::Camera &cam)
void OsgSceneHandler::cullImplementation(Producer::Camera &cam)
{
pm->set(cam.getProjectionMatrix());
@@ -60,7 +60,7 @@ void OsgSceneHandler::cull(Producer::Camera &cam)
SceneView::cull();
}
void OsgSceneHandler::draw(Producer::Camera &)
void OsgSceneHandler::drawImplementation(Producer::Camera &)
{
SceneView::draw();
}

257
src/osgProducer/ViewerEventHandler.cpp
View File

@@ -1,12 +1,256 @@
#include <osgProducer/ViewerEventHandler>
#include <osgDB/WriteFile>
#include <osgText/Text>
using namespace osgProducer;
ViewerEventHandler::ViewerEventHandler(osgProducer::OsgCameraGroup* cg):
_cg(cg),
_writeNodeFileName("savedmodel.osg")
class DrawHelpCallback : public Producer::Camera::Callback
{
public:
DrawHelpCallback(ViewerEventHandler* veh):
_veh(veh),
_initialized(false)
{
}
virtual void operator()( const Producer::Camera & camera)
{
if (_veh->getDisplayHelp())
{
if (!_initialized) createText();
OsgSceneHandler* osh = _veh->getOsgCameraGroup()->getSceneHandlerList()[0].get();
int x,y;
unsigned int width,height;
camera.getProjectionRect(x,y,width,height);
_viewport->setViewport(x,y,width,height);
// should possibly update _viewport...
// Set up the Orthographic view
glMatrixMode( GL_PROJECTION );
glPushMatrix();
glLoadIdentity();
glOrtho( 0.0, 1280.0, 0.0, 1024, -1.0, 1.0 );
glPushAttrib( GL_ENABLE_BIT );
glDisable( GL_LIGHTING );
glDisable( GL_DEPTH_TEST );
glEnable( GL_BLEND );
glMatrixMode( GL_MODELVIEW );
glPushMatrix();
glLoadIdentity();
osh->getState()->pushStateSet(_stateset.get());
for(TextList::iterator ditr=_descriptionList.begin();
ditr!=_descriptionList.end();
++ditr)
{
(*ditr)->draw(*(osh->getState()));
}
for(TextList::iterator oitr=_optionList.begin();
oitr!=_optionList.end();
++oitr)
{
(*oitr)->draw(*(osh->getState()));
}
for(TextList::iterator eitr=_explanationList.begin();
eitr!=_explanationList.end();
++eitr)
{
(*eitr)->draw(*(osh->getState()));
}
osh->getState()->popStateSet();
glPopMatrix();
glMatrixMode( GL_PROJECTION );
glPopMatrix();
glMatrixMode( GL_MODELVIEW );
glPopAttrib();
}
}
void createText()
{
_stateset = new osg::StateSet;
_viewport = new osg::Viewport(0,0,1280,1024);
_stateset->setAttribute(_viewport.get());
OsgCameraGroup* ocg = _veh->getOsgCameraGroup();
if (ocg->getApplicationUsage())
{
const osg::ApplicationUsage::UsageMap& um = ocg->getApplicationUsage()->getKeyboardMouseBindings();
float maxWidthOfDisplayRegion = 1200.0f;
float bottomOfDescription = 1000.0f;
osg::Vec3 posDescription(0.0f,bottomOfDescription,0.0f);
osg::Vec4 colorDescription(1.0f,1.0f,0.0f,1.0f);
float characterSize = 20.0f;
if (!(ocg->getApplicationUsage()->getDescription()).empty())
{
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorDescription);
text->setCharacterSize(characterSize);
text->setPosition(posDescription);
text->setMaximumWidth(maxWidthOfDisplayRegion);
text->setAlignment(osgText::Text::BASE_LINE);
text->setText(ocg->getApplicationUsage()->getDescription());
bottomOfDescription = text->getBound().yMin()-characterSize*2.0f;
_descriptionList.push_back(text);
}
osg::Vec3 posOption(0.0f,bottomOfDescription,0.0f);
osg::Vec4 colorOption(1.0f,1.0f,0.0f,1.0f);
float maxX = 0.0f;
// create option strings.
osg::ApplicationUsage::UsageMap::const_iterator citr;
for(citr=um.begin();
citr!=um.end();
++citr)
{
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorOption);
text->setCharacterSize(characterSize);
text->setPosition(posOption);
text->setAlignment(osgText::Text::BASE_LINE);
text->setText(citr->first);
if (text->getBound().xMax()>maxX) maxX=text->getBound().xMax();
_optionList.push_back(text);
}
osg::Vec3 posExplanation(maxX+characterSize,bottomOfDescription,0.0f);
osg::Vec4 colorExplanation(1.0f,1.0f,0.0f,1.0f);
float maxWidth = maxWidthOfDisplayRegion-maxX;
TextList::iterator oitr;
TextList::iterator eitr;
TextList::iterator ditr;
for(citr=um.begin(), oitr=_optionList.begin();
citr!=um.end();
++citr,++oitr)
{
osgText::Text* text = new osgText::Text;
text->setFont("fonts/arial.ttf");
text->setColor(colorExplanation);
text->setCharacterSize(characterSize);
text->setPosition(posExplanation);
text->setMaximumWidth(maxWidth);
text->setAlignment(osgText::Text::BASE_LINE);
text->setText(citr->second);
if (text->getBound().xMax()>maxX) maxX=text->getBound().xMax();
// fix the position of option text to be the same height as the examplanation.
osg::Vec3 pos((*oitr)->getPosition());
(*oitr)->setPosition(osg::Vec3(pos.x(),posExplanation.y(),pos.z()));
posExplanation.y() = text->getBound().yMin()-characterSize;
_explanationList.push_back(text);
}
// compute the boundings of the all the text.
osg::BoundingBox bb;
for(ditr=_descriptionList.begin();
ditr!=_descriptionList.end();
++ditr)
{
bb.expandBy((*ditr)->getBound());
}
for(oitr=_optionList.begin();
oitr!=_optionList.end();
++oitr)
{
bb.expandBy((*oitr)->getBound());
}
for(eitr=_explanationList.begin();
eitr!=_explanationList.end();
++eitr)
{
bb.expandBy((*eitr)->getBound());
}
float totalWidth = bb.xMax()-bb.xMin();
float totalHeight = bb.yMax()-bb.yMin();
float widthMargin = (1280.0f-totalWidth)*0.5f;
float heightMargin = (1024.0f-totalHeight)*0.5f;
osg::Vec3 delta(widthMargin-bb.xMin(),heightMargin-bb.yMin(),0.0f);
// shift the text to center it.
for(ditr=_descriptionList.begin();
ditr!=_descriptionList.end();
++ditr)
{
(*ditr)->setPosition((*ditr)->getPosition()+delta);
}
for(oitr=_optionList.begin();
oitr!=_optionList.end();
++oitr)
{
(*oitr)->setPosition((*oitr)->getPosition()+delta);
}
for(eitr=_explanationList.begin();
eitr!=_explanationList.end();
++eitr)
{
(*eitr)->setPosition((*eitr)->getPosition()+delta);
}
}
_initialized = true;
}
ViewerEventHandler* _veh;
bool _initialized;
osg::ref_ptr<osg::StateSet> _stateset;
osg::ref_ptr<osg::Viewport> _viewport;
typedef std::vector< osg::ref_ptr<osgText::Text> > TextList;
TextList _descriptionList;
TextList _optionList;
TextList _explanationList;
};
ViewerEventHandler::ViewerEventHandler(OsgCameraGroup* cg):
_cg(cg),
_writeNodeFileName("savedmodel.osg"),
_displayHelp(false)
{
Producer::CameraConfig* cfg = _cg->getCameraConfig();
Producer::Camera *cam = cfg->getCamera(0);
cam->addPostDrawCallback(new DrawHelpCallback(this));
}
bool ViewerEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&)
@@ -46,10 +290,7 @@ bool ViewerEventHandler::handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActio
case '/' :
case '?' :
{
if (_cg->getApplicationUsage())
{
_cg->getApplicationUsage()->write(std::cout,_cg->getApplicationUsage()->getKeyboardMouseBindings());
}
setDisplayHelp(!getDisplayHelp());
return true;
}
@@ -71,4 +312,6 @@ void ViewerEventHandler::accept(osgGA::GUIEventHandlerVisitor& gehv)
void ViewerEventHandler::getUsage(osg::ApplicationUsage& usage) const
{
usage.addKeyboardMouseBinding("f","Toggle fullscreen");
usage.addKeyboardMouseBinding("?","Display help");
usage.addKeyboardMouseBinding("o","Write scene graph to file");
}