FGFS-4.1/OpenSceneGraph
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Added support for compute the extents on local NDC coordiantes of the

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elevation and colour layers
This commit is contained in:
Robert Osfield
2007-03-28 16:28:20 +00:00
parent b7967b7007
commit cb811aa7cd
4 changed files with 123 additions and 11 deletions
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41
src/osgTerrain/Locator.cpp
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@@ -13,6 +13,8 @@
#include <osgTerrain/Locator>
#include <list>
using namespace osgTerrain;
//////////////////////////////////////////////////////////////////////////////
@@ -32,6 +34,43 @@ Locator::~Locator()
{
}
bool Locator::computeLocalBounds(Locator& source, osg::Vec3d& bottomLeft, osg::Vec3d& topRight)
{
typedef std::list<osg::Vec3d> Corners;
Corners corners;
osg::Vec3d cornerNDC;
if (Locator::convertLocalCoordBetween(source, osg::Vec3d(0.0,0.0,0.0), *this, cornerNDC))
{
corners.push_back(cornerNDC);
}
if (Locator::convertLocalCoordBetween(source, osg::Vec3d(1.0,0.0,0.0), *this, cornerNDC))
{
corners.push_back(cornerNDC);
}
if (Locator::convertLocalCoordBetween(source, osg::Vec3d(0.0,1.0,0.0), *this, cornerNDC))
{
corners.push_back(cornerNDC);
}
if (Locator::convertLocalCoordBetween(source, osg::Vec3d(1.0,1.0,0.0), *this, cornerNDC))
{
corners.push_back(cornerNDC);
}
for(Corners::iterator itr = corners.begin();
itr != corners.end();
++itr)
{
bottomLeft.x() = osg::minimum( bottomLeft.x(), itr->x());
bottomLeft.y() = osg::minimum( bottomLeft.y(), itr->y());
topRight.x() = osg::maximum( topRight.x(), itr->x());
topRight.y() = osg::maximum( topRight.y(), itr->y());
}
}
//////////////////////////////////////////////////////////////////////////////
//
@@ -70,7 +109,7 @@ bool EllipsoidLocator::convertLocalToModel(const osg::Vec3d& local, osg::Vec3d&
return true;
}
bool EllipsoidLocator::convertModelToWorld(const osg::Vec3d& world, osg::Vec3d& local) const
bool EllipsoidLocator::convertModelToLocal(const osg::Vec3d& world, osg::Vec3d& local) const
{
double longitude, latitude, height;