FGFS-4.1/OpenSceneGraph
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Improved the computation of the side vector

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This commit is contained in:
Robert Osfield
2007-07-05 18:30:57 +00:00
parent 601217025f
commit 5aa3db15a3
1 changed files with 7 additions and 2 deletions
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9
src/osgSim/OverlayNode.cpp
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@@ -1462,7 +1462,6 @@ void OverlayNode::traverse_VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY(osg::NodeVis
osg::Vec3d center = _overlaySubgraph->getBound().center();
osg::Vec3d frustum_axis = cv->getLookVectorLocal();
osg::Vec3d lookVector(0.0,0.0,-1.0);
if (em)
@@ -1471,7 +1470,13 @@ void OverlayNode::traverse_VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY(osg::NodeVis
lookVector.normalize();
}
osg::Vec3d sideVector = lookVector ^ frustum_axis;
osg::Vec3d sideVectorLV = lookVector ^ cv->getLookVectorLocal();
osg::Vec3d sideVectorUP = lookVector ^ cv->getUpLocal();
osg::Vec3d sideVector = sideVectorLV.length() > sideVectorUP.length() ?
sideVectorLV :
sideVectorUP;
sideVector.normalize();
osg::Vec3d upVector = sideVector ^ lookVector;