ViewportPtr
Canvas::getViewportAt(const unsigned int theX, const unsigned int theY) const {
int myViewportCount = getNode().childNodesLength(VIEWPORT_NODE_NAME);
for (int i = myViewportCount-1; i >= 0; --i) {
dom::NodePtr myViewportNode = getNode().childNode(VIEWPORT_NODE_NAME,i);
ViewportPtr myViewport = myViewportNode->getFacade<Viewport>();
int myTop = 0;
int myLeft = 0;
unsigned int myWidth = 0;
unsigned int myHeight = 0;
if (myViewport->getTop(myTop) && myViewport->getHeight(myHeight) &&
myViewport->getWidth(myWidth) && myViewport->getLeft(myLeft) &&
myTop <= static_cast<int>(theY) &&
myHeight + myTop >= theY &&
myLeft <= static_cast<int>(theX) &&
myLeft + myWidth >= theX)
{
return myViewport;
}
}
return ViewportPtr(0);
}
void MultiDisplayWindow::serverRender(WindowPtr serverWindow,
UInt32 id,
DrawActionBase *action )
{
TileCameraDecoratorPtr deco;
ViewportPtr serverPort;
ViewportPtr clientPort;
StereoBufferViewportPtr clientStereoPort;
UInt32 sv,cv;
Int32 l,r,t,b;
Int32 cleft,cright,ctop,cbottom;
// sync, otherwise viewports will be out of date
if(!getHServers())
{
setHServers(getServers().size());
}
if(!getVServers())
{
setVServers(1);
}
UInt32 row =id/getHServers();
UInt32 column=id%getHServers();
// calculate width and height from local width and height
UInt32 width = serverWindow->getWidth() ;
UInt32 height = serverWindow->getHeight();
if(getWidth()==0)
{
setWidth( width*getHServers() );
}
if(getHeight()==0)
{
setHeight( height*getVServers() );
}
Int32 left = column * width - column * getXOverlap();
Int32 bottom = row * height - row * getYOverlap();
Int32 right = left + width - 1;
Int32 top = bottom + height - 1;
Real64 scaleCWidth =
((width - getXOverlap()) * (getHServers() - 1) + width) /
(float)getWidth();
Real64 scaleCHeight =
((height - getYOverlap())* (getVServers() - 1) + height)/
(float)getHeight();
bool isVirtualPort = false;
// duplicate viewports
for(cv = 0, sv = 0; cv < getPort().size(); ++cv)
{
clientPort = getPort()[cv];
#if 0
isVirtualPort = clientPort->getType().isDerivedFrom(FBOViewport::getClassType());
if(isVirtualPort)
{
// TODO -- seems wrong to render this on all servers, though rendering
// then transmitting the texture doesn't seem like a good idea either.
if(serverWindow->getPort().size() <= sv)
{
serverPort = ViewportPtr::dcast(clientPort->shallowCopy());
beginEditCP(serverWindow);
serverWindow->addPort(serverPort);
endEditCP(serverWindow);
}
else
{
serverPort = serverWindow->getPort()[sv];
if(serverWindow->getPort()[sv]->getType() !=
clientPort->getType())
{
// there is a viewport with the wrong type
subRefCP(serverWindow->getPort()[sv]);
serverPort = ViewportPtr::dcast(clientPort->shallowCopy());
beginEditCP(serverWindow);
{
serverWindow->getPort()[sv] = serverPort;
}
endEditCP(serverWindow);
}
}
// update changed viewport fields
updateViewport(serverPort,clientPort);
}
else
#endif
{
clientStereoPort =
dynamic_cast<StereoBufferViewportPtr>(clientPort);
cleft = (Int32)(clientPort->getPixelLeft() * scaleCWidth) ;
cbottom = (Int32)(clientPort->getPixelBottom() * scaleCHeight) ;
cright = (Int32)((clientPort->getPixelRight()+1) * scaleCWidth) -1;
ctop = (Int32)((clientPort->getPixelTop()+1) * scaleCHeight)-1;
if(cright < left ||
cleft > right ||
ctop < bottom ||
cbottom > top )
{
// invisible on this server screen
continue;
}
// calculate overlapping viewport
l = osgMax(cleft ,left ) - left;
b = osgMax(cbottom,bottom) - bottom;
r = osgMin(cright ,right ) - left;
t = osgMin(ctop ,top ) - bottom;
if(serverWindow->getPort().size() <= sv)
{
serverPort =
dynamic_cast<ViewportPtr>(clientPort->shallowCopy());
deco = TileCameraDecorator::create();
serverWindow->addPort(serverPort);
serverPort->setCamera(deco);
}
else
{
serverPort = serverWindow->getPort()[sv];
deco = dynamic_cast<TileCameraDecoratorPtr>(
serverPort->getCamera());
if(serverWindow->getPort()[sv]->getType() !=
clientPort->getType())
{
// there is a viewport with the wrong type
serverPort =
dynamic_cast<ViewportPtr>(clientPort->shallowCopy());
serverWindow->replacePort(sv,
serverPort);//[sv] = serverPort;
serverPort->setCamera(deco);
}
else
{
deco = dynamic_cast<TileCameraDecoratorPtr>(
serverPort->getCamera());
}
}
// update changed viewport fields
updateViewport(serverPort,clientPort);
// set viewport size
serverPort->setSize(Real32(l),Real32(b),Real32(r),Real32(t));
// use pixel even if pixel = 1
if(serverPort->getLeft() == 1.0)
serverPort->setLeft(1.0001);
if(serverPort->getRight() == 1.0)
serverPort->setRight(1.0001);
if(serverPort->getTop() == 1.0)
serverPort->setTop(1.0001);
if(serverPort->getBottom() == 1.0)
serverPort->setBottom(1.0001);
// calculate tile parameters
deco->setFullWidth ( cright-cleft );
deco->setFullHeight( ctop-cbottom );
deco->setSize( ( l+left-cleft ) / (float)( cright-cleft ),
( b+bottom-cbottom ) / (float)( ctop-cbottom ),
( r+left-cleft ) / (float)( cright-cleft ),
( t+bottom-cbottom ) / (float)( ctop-cbottom ) );
deco->setDecoratee( clientPort->getCamera() );
}
sv++;
}
// remove unused ports
while(serverWindow->getPort().size()>sv)
{
serverWindow->subPort(sv);
}
Inherited::serverRender(serverWindow,id,action);
}
