FGFS-4.1/OpenSceneGraph
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Fixed handling of case where the master and the slave camera are placed on the same GraphisContext, or when the master camera and slave camera are assigned to different Camers. Note normally one doesn't mix master with GraphicsContexts and slave cameras so neither case is common.

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This commit is contained in:
Robert Osfield 2009-05-21 16:33:38 +00:00
parent 27ae00630d
commit cfdccbfed6
1 changed files with 24 additions and 0 deletions
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24
src/osg/GraphicsContext.cpp
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@ -823,6 +823,7 @@ void GraphicsContext::resizedImplementation(int x, int y, int width, int height)
osg::View* view = camera->getView();
osg::View::Slave* slave = view ? view->findSlaveForCamera(camera) : 0;
if (slave)
{
if (camera->getReferenceFrame()==osg::Transform::RELATIVE_RF)
@ -853,6 +854,29 @@ void GraphicsContext::resizedImplementation(int x, int y, int width, int height)
case(osg::Camera::VERTICAL): camera->getProjectionMatrix() *= osg::Matrix::scale(1.0, aspectRatioChange,1.0); break;
default: break;
}
osg::Camera* master = view ? view->getCamera() : 0;
if (view && camera==master)
{
for(unsigned int i=0; i<view->getNumSlaves(); ++i)
{
osg::View::Slave& child = view->getSlave(i);
if (child._camera.valid() && child._camera->getReferenceFrame()==osg::Transform::RELATIVE_RF)
{
// scale the slaves by the inverse of the change that has been applied to master, to avoid them be
// scaled twice (such as when both master and slave are on the same GraphicsContexts) or by the wrong scale
// when master and slave are on different GraphicsContexts.
switch(policy)
{
case(osg::Camera::HORIZONTAL): child._projectionOffset *= osg::Matrix::scale(aspectRatioChange,1.0,1.0); break;
case(osg::Camera::VERTICAL): child._projectionOffset *= osg::Matrix::scale(1.0, 1.0/aspectRatioChange,1.0); break;
default: break;
}
}
}
}
}
}