FGFS-4.1/OpenSceneGraph
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Added --fov and --light-pos and --light-dir command line parameters

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This commit is contained in:
Robert Osfield 2011-02-20 09:55:20 +00:00
parent caa9ef591e
commit 323cdab7b8
1 changed files with 29 additions and 14 deletions
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43
examples/osgshadow/osgshadow.cpp
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@ -595,10 +595,18 @@ int main(int argc, char** argv)
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
float fov = 0.0;
while (arguments.read("--fov",fov)) {}
osg::Vec4 lightpos(0.0,0.0,1,0.0);
while (arguments.read("--positionalLight")) { lightpos.set(0.5,0.5,1.5,1.0); }
while (arguments.read("--directionalLight")) { lightpos.set(0.0,0.0,1,0.0); }
while ( arguments.read("--light-pos", lightpos.x(), lightpos.y(), lightpos.z(), lightpos.w())) {}
while ( arguments.read("--light-pos", lightpos.x(), lightpos.y(), lightpos.z())) { lightpos.w()=1.0; }
while ( arguments.read("--light-dir", lightpos.x(), lightpos.y(), lightpos.z())) { lightpos.w()=0.0; }
bool postionalLight = true;
while (arguments.read("--positionalLight")) postionalLight = true;
while (arguments.read("--directionalLight")) postionalLight = false;
while (arguments.read("--castsShadowMask", CastsShadowTraversalMask ));
while (arguments.read("--receivesShadowMask", ReceivesShadowTraversalMask ));
@ -641,6 +649,9 @@ int main(int argc, char** argv)
// add the record camera path handler
viewer.addEventHandler(new osgViewer::RecordCameraPathHandler);
// add the window size toggle handler
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
// add the threading handler
viewer.addEventHandler( new osgViewer::ThreadingHandler() );
@ -785,18 +796,13 @@ int main(int argc, char** argv)
model->accept(cbbv);
osg::BoundingBox bb = cbbv.getBoundingBox();
osg::Vec4 lightpos;
if (postionalLight)
if (lightpos.w()==1.0)
{
lightpos.set(bb.center().x(), bb.center().y(), bb.zMax() + bb.radius()*2.0f ,1.0f);
lightpos.x() = bb.xMin()+(bb.xMax()-bb.xMin())*lightpos.x();
lightpos.y() = bb.yMin()+(bb.yMax()-bb.yMin())*lightpos.y();
lightpos.z() = bb.zMin()+(bb.zMax()-bb.zMin())*lightpos.z();
}
else
{
lightpos.set(0.5f,0.25f,0.8f,0.0f);
}
if ( arguments.read("--base"))
{
@ -855,6 +861,15 @@ int main(int argc, char** argv)
// create the windows and run the threads.
viewer.realize();
if (fov!=0.0)
{
double fovy, aspectRatio, zNear, zFar;
viewer.getCamera()->getProjectionMatrix().getPerspective(fovy, aspectRatio, zNear, zFar);
std::cout << "Setting FOV to " << fov << std::endl;
viewer.getCamera()->getProjectionMatrix().makePerspective(fov, aspectRatio, zNear, zFar);
}
// it is done after viewer.realize() so that the windows are already initialized
if ( arguments.read("--debugHUD"))
@ -909,7 +924,7 @@ int main(int argc, char** argv)
{
float t = viewer.getFrameStamp()->getSimulationTime();
if (postionalLight)
if (lightpos.w()==1.0)
{
lightpos.set(bb.center().x()+sinf(t)*bb.radius(), bb.center().y() + cosf(t)*bb.radius(), bb.zMax() + bb.radius()*3.0f ,1.0f);
}