FGFS-4.1/OpenSceneGraph
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From Marco Jez, moved the rear view camera's viewport to the bottom left of window to accomdate a greater range of display sizes.

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From Robert Osfield, made the background colour of the intersted camera a scaled down verson of the main background colour to make it more obvious.
This commit is contained in:
Robert Osfield
2005-11-02 14:22:31 +00:00
parent 6c31d05172
commit 682b867e4f
1 changed files with 9 additions and 6 deletions
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15
examples/osgmultiplecameras/osgmultiplecameras.cpp
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@@ -33,7 +33,7 @@ osg::Node* createRearView(osg::Node* subgraph, const osg::Vec4& clearColour)
osg::CameraNode* camera = new osg::CameraNode;
// set the viewport
camera->setViewport(420,800,400,200);
camera->setViewport(10,10,400,200);
// set the view matrix
camera->setCullingActive(false);
@@ -54,11 +54,7 @@ osg::Node* createRearView(osg::Node* subgraph, const osg::Vec4& clearColour)
camera->addChild(subgraph);
// switch of back face culling as we've swapped over the projection matrix making back faces become front faces.
#if 1
camera->getOrCreateStateSet()->setAttribute(new osg::FrontFace(osg::FrontFace::CLOCKWISE));
#else
camera->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF | osg::StateAttribute::OVERRIDE);
#endif
return camera;
}
@@ -108,7 +104,14 @@ int main( int argc, char **argv )
// add the HUD subgraph.
if (scene.valid()) group->addChild(scene.get());
group->addChild(createRearView(scene.get(), viewer.getClearColor()));
osg::Vec4 colour = viewer.getClearColor();
colour.r() *= 0.5f;
colour.g() *= 0.5f;
colour.b() *= 0.5f;
// note tone down the normal back ground colour to make it obvious that there is a seperate camera inserted.
group->addChild(createRearView(scene.get(), colour));
// set the scene to render
viewer.setSceneData(group.get());