FGFS-4.1/OpenSceneGraph
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From Mathias Froehlich, "Attached is a change to the stats handler so that the aspect ratio of the

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viewer stats coordinates always stay about 1:1 to the pixels.
This helps for more readable stats with very wide windows for example."
This commit is contained in:
Robert Osfield 2012-02-06 13:40:01 +00:00
parent af01a9e984
commit 5d50913722
2 changed files with 21 additions and 3 deletions
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1
include/osgViewer/ViewerEventHandlers
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@ -149,6 +149,7 @@ class OSGVIEWER_EXPORT StatsHandler : public osgGA::GUIEventHandler
protected:
void setUpHUDCamera(osgViewer::ViewerBase* viewer);
void setWindowSize(int width, int height);
osg::Geometry* createBackgroundRectangle(const osg::Vec3& pos, const float width, const float height, osg::Vec4& color);

23
src/osgViewer/StatsHandler.cpp
View File

@ -235,6 +235,9 @@ bool StatsHandler::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdap
return true;
}
}
case(osgGA::GUIEventAdapter::RESIZE):
setWindowSize(ea.getWindowWidth(), ea.getWindowHeight());
break;
default: break;
}
@ -315,13 +318,11 @@ void StatsHandler::setUpHUDCamera(osgViewer::ViewerBase* viewer)
_camera->setGraphicsContext(context);
_camera->setViewport(0, 0, context->getTraits()->width, context->getTraits()->height);
_camera->setRenderOrder(osg::Camera::POST_RENDER, 10);
_camera->setProjectionMatrix(osg::Matrix::ortho2D(0.0,_statsWidth,0.0,_statsHeight));
_camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
_camera->setViewMatrix(osg::Matrix::identity());
setWindowSize(context->getTraits()->width, context->getTraits()->height);
// only clear the depth buffer
_camera->setClearMask(0);
@ -331,6 +332,22 @@ void StatsHandler::setUpHUDCamera(osgViewer::ViewerBase* viewer)
_initialized = true;
}
void StatsHandler::setWindowSize(int width, int height)
{
if (width <= 0 || height <= 0)
return;
_camera->setViewport(0, 0, width, height);
if (fabs(height*_statsWidth) <= fabs(width*_statsHeight))
{
_camera->setProjectionMatrix(osg::Matrix::ortho2D(0.0,width*_statsHeight/height,0.0,_statsHeight));
}
else
{
_camera->setProjectionMatrix(osg::Matrix::ortho2D(0.0,_statsWidth,_statsHeight-height*_statsWidth/width,_statsHeight));
}
}
// Drawcallback to draw averaged attribute
struct AveragedValueTextDrawCallback : public virtual osg::Drawable::DrawCallback
{