FGFS-4.1/OpenSceneGraph
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Added Locator and layer setting to osgterrain example

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This commit is contained in:
Robert Osfield 2007-03-26 15:52:22 +00:00
parent b419fa93ef
commit 1cdda0654f
4 changed files with 118 additions and 14 deletions
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113
examples/osgterrain/osgterrain.cpp
View File

@ -22,6 +22,43 @@
#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)
{
osg::ArgumentParser arguments(&argc, argv);
@ -35,6 +72,8 @@ 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);
bool readParameter = false;
do
@ -42,21 +81,79 @@ int main(int argc, char** argv)
readParameter = false;
std::string filename;
if (arguments.read("-x",x)) readParameter = true;
if (arguments.read("-y",y)) readParameter = true;
if (arguments.read("-w",w)) readParameter = true;
if (arguments.read("-h",h)) readParameter = true;
if (arguments.read("-l",x,y,w,h))
{
locator = new MyLocator(x,y,w,h);
readParameter = true;
}
if (arguments.read("--dem",filename))
if (arguments.read("--hf",filename))
{
readParameter = true;
osg::notify(osg::NOTICE)<<"--dem "<<filename<<" x="<<x<<" y="<<y<<" w="<<w<<" h="<<h<<std::endl;
osg::notify(osg::NOTICE)<<"--hf "<<filename<<" x="<<x<<" y="<<y<<" w="<<w<<" h="<<h<<std::endl;
osg::ref_ptr<osg::HeightField> hf = osgDB::readHeightFieldFile(filename);
if (hf.valid())
{
osg::ref_ptr<osgTerrain::HeightFieldLayer> hfl = new osgTerrain::HeightFieldLayer;
hfl->setHeightField(hf.get());
hfl->setLocator(locator.get());
terrain->setElevationLayer(hfl.get());
osg::notify(osg::NOTICE)<<"created osgTerrain::HeightFieldLayer"<<std::endl;
}
else
{
osg::notify(osg::NOTICE)<<"failed to create osgTerrain::HeightFieldLayer"<<std::endl;
}
}
if (arguments.read("--image",filename))
if (arguments.read("-e",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;
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(filename);
if (image.valid())
{
osg::ref_ptr<osgTerrain::ImageLayer> imageLayer = new osgTerrain::ImageLayer;
imageLayer->setImage(image.get());
imageLayer->setLocator(locator.get());
terrain->setElevationLayer(imageLayer.get());
osg::notify(osg::NOTICE)<<"created Elevation osgTerrain::ImageLayer"<<std::endl;
}
else
{
osg::notify(osg::NOTICE)<<"failed to create osgTerrain::ImageLayer"<<std::endl;
}
}
if (arguments.read("-c",filename) || arguments.read("--image",filename))
{
readParameter = true;
osg::notify(osg::NOTICE)<<"--image "<<filename<<" x="<<x<<" y="<<y<<" w="<<w<<" h="<<h<<std::endl;
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(filename);
if (image.valid())
{
osg::ref_ptr<osgTerrain::ImageLayer> imageLayer = new osgTerrain::ImageLayer;
imageLayer->setImage(image.get());
imageLayer->setLocator(locator.get());
terrain->setColorLayer(imageLayer.get());
osg::notify(osg::NOTICE)<<"created Color osgTerrain::ImageLayer"<<std::endl;
}
else
{
osg::notify(osg::NOTICE)<<"failed to create osgTerrain::ImageLayer"<<std::endl;
}
}
} while (readParameter);
@ -67,6 +164,8 @@ int main(int argc, char** argv)
terrain->setTerrainTechnique(geometryTechnique.get());
if (!terrain) return 0;
return 0;
// add a viewport to the viewer and attach the scene graph.
viewer.setSceneData(terrain.get());

3
include/osgTerrain/Layer
View File

@ -31,6 +31,9 @@ class OSGTERRAIN_EXPORT Layer : public osg::Object
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
Layer(const Layer&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
META_Object(osgTerrain, Layer);
void setLocator(Locator* locator) { _locator = locator; }
Locator* getLocator() { return _locator.get(); }

6
include/osgTerrain/Locator
View File

@ -30,8 +30,10 @@ class OSGTERRAIN_EXPORT Locator : public osg::Object
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
Locator(const Locator&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
virtual bool convertLocalToModel(const osg::Vec3d& local, osg::Vec3d& world) = 0;
virtual bool convertModelToWorld(const osg::Vec3d& local, osg::Vec3d& world) = 0;
META_Object(osgTerrain, Locator);
virtual bool convertLocalToModel(const osg::Vec3d& local, osg::Vec3d& world) {};
virtual bool convertModelToWorld(const osg::Vec3d& world, osg::Vec3d& local) {};
protected:

10
src/osgViewer/CMakeLists.txt
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@ -79,12 +79,12 @@ LINK_INTERNAL(${LIB_NAME}
osgUtil
osg
)
LINK_CORELIB_DEFAULT(${LIB_NAME})
IF(MINGW)
LINK_EXTERNAL(${LIB_NAME}
gdi32
)
ENDIF(MINGW)
IF(MINGW OR CYGWIN)
LINK_EXTERNAL(${LIB_NAME} gdi32 )
ENDIF(MINGW OR CYGWIN)
INCLUDE(ModuleInstall OPTIONAL)