FGFS-4.1/OpenSceneGraph
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Added osg::Camera::ProjectionResizePolicy enum and associated methods for controlling

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how the field of view is adjust on window resizes.
This commit is contained in:
Robert Osfield
2007-05-22 09:32:38 +00:00
parent d22208f701
commit 5056f6fee6
4 changed files with 47 additions and 29 deletions
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40
src/osg/GraphicsContext.cpp
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@@ -487,42 +487,24 @@ 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 && camera->getReferenceFrame()==osg::Transform::RELATIVE_RF)
{
slave->_projectionOffset *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
switch(view->getCamera()->getProjectionResizePolicy())
{
case(osg::Camera::HORIZONTAL): slave->_projectionOffset *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0); break;
case(osg::Camera::VERTICAL): slave->_projectionOffset *= osg::Matrix::scale(1.0, aspectRatioChange,1.0); break;
default: break;
}
}
else
{
#if 0
osg::Matrixd& pm = camera->getProjectionMatrix();
bool orthographicCamera = (pm(0,3)==0.0) && (pm(1,3)==0.0) && (pm(2,3)==0.0) && (pm(3,3)==1.0);
if (orthographicCamera)
switch(view->getCamera()->getProjectionResizePolicy())
{
double left, right, bottom, top, zNear, zFar;
camera->getProjectionMatrixAsOrtho(left, right, bottom, top, zNear, zFar);
double mid = (right+left)*0.5;
double halfWidth = (right-left)*0.5;
left = mid - halfWidth * aspectRatioChange;
right = mid + halfWidth * aspectRatioChange;
camera->setProjectionMatrixAsOrtho(left, right, bottom, top, zNear, zFar);
case(osg::Camera::HORIZONTAL): camera->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0); break;
case(osg::Camera::VERTICAL): camera->getProjectionMatrix() *= osg::Matrix::scale(1.0, aspectRatioChange,1.0); break;
default: break;
}
else
{
double left, right, bottom, top, zNear, zFar;
camera->getProjectionMatrixAsFrustum(left, right, bottom, top, zNear, zFar);
double mid = (right+left)*0.5;
double halfWidth = (right-left)*0.5;
left = mid - halfWidth * aspectRatioChange;
right = mid + halfWidth * aspectRatioChange;
camera->setProjectionMatrixAsFrustum(left, right, bottom, top, zNear, zFar);
}
#else
camera->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
#endif
}
}