FGFS-4.1/OpenSceneGraph
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Added EllipsoidLocator.

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This commit is contained in:
Robert Osfield
2007-03-27 11:23:57 +00:00
parent 37dd2851e9
commit e76e4e82db
3 changed files with 98 additions and 41 deletions
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44
examples/osgterrain/osgterrain.cpp
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@@ -22,41 +22,6 @@
#include <iostream>
class MyLocator : public osgTerrain::Locator
{
public:
MyLocator(double x, double y, double width, double height):
_x(x),
_y(y),
_width(width),
_height(height) {}
bool convertLocalToModel(const osg::Vec3d& local, osg::Vec3d& world)
{
world.x() = _x + local.x()*_width;
world.y() = _y + local.y()*_height;
world.z() = _z + local.z();
return true;
}
bool convertModelToWorld(const osg::Vec3d& world, osg::Vec3d& local)
{
local.x() = (world.x()- _x) / _width;
local.y() = (world.y() - _y) / _height;
local.z() = world.z() - _z;
return true;
}
double _x;
double _y;
double _z;
double _width;
double _height;
};
int main(int argc, char** argv)
@@ -72,7 +37,7 @@ int main(int argc, char** argv)
double h = 1.0;
osg::ref_ptr<osgTerrain::TerrainNode> terrain = new osgTerrain::TerrainNode;
osg::ref_ptr<osgTerrain::Locator> locator = new MyLocator(0.0, 0.0, 1.0, 1.0);
osg::ref_ptr<osgTerrain::Locator> locator = new osgTerrain::EllipsoidLocator(-osg::PI, -osg::PI*0.5, 2.0*osg::PI, osg::PI, 0.0);
bool readParameter = false;
@@ -81,9 +46,10 @@ int main(int argc, char** argv)
readParameter = false;
std::string filename;
if (arguments.read("-l",x,y,w,h))
if (arguments.read("-e",x,y,w,h))
{
locator = new MyLocator(x,y,w,h);
// define the extents.
locator = new osgTerrain::EllipsoidLocator(x,y,w,h,0);
readParameter = true;
}
@@ -112,7 +78,7 @@ int main(int argc, char** argv)
}
if (arguments.read("-e",filename) || arguments.read("--elevation-image",filename))
if (arguments.read("-h",filename) || arguments.read("--elevation-image",filename))
{
readParameter = true;
osg::notify(osg::NOTICE)<<"--elevation-image "<<filename<<" x="<<x<<" y="<<y<<" w="<<w<<" h="<<h<<std::endl;