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Udates to Drawable + IVE plugin with support for new ClusterCullingCallack.

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Improvement to osgbluemarble.
This commit is contained in:
Robert Osfield
2003-10-10 12:54:21 +00:00
parent 83b04bd04b
commit 5d35daa970
7 changed files with 240 additions and 169 deletions
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151
examples/osgbluemarble/osgbluemarble.cpp
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@@ -45,7 +45,7 @@ osg::Node* createTile(const std::string& filename, bool leftHemisphere, double x
options->_sourceRatioWindow.set(x,1-(y+h),w,h);
options->_destinationImageWindowMode = osgDB::ImageOptions::PIXEL_WINDOW;
options->_destinationPixelWindow.set(0,0,512,512);
options->_destinationPixelWindow.set(0,0,256,256);
osgDB::Registry::instance()->setOptions(options.get());
osg::Image* image = osgDB::readImageFile(filename.c_str());
@@ -61,8 +61,8 @@ osg::Node* createTile(const std::string& filename, bool leftHemisphere, double x
geode->setStateSet( stateset );
unsigned int numColumns = 20;
unsigned int numRows = 20;
unsigned int numColumns = 10;
unsigned int numRows = 10;
unsigned int r;
unsigned int c;
@@ -142,108 +142,101 @@ osg::Node* createTile(const std::string& filename, bool leftHemisphere, double x
geometry->setUseVertexBufferObjects(true);
{
osg::Vec3 center = computePosition(leftHemisphere, x+w*0.5, y+h*0.5);
osg::Vec3 normal = center;
osg::Vec3 n00 = computePosition(leftHemisphere, x, y);
osg::Vec3 n10 = computePosition(leftHemisphere, x+w, y);
osg::Vec3 n11 = computePosition(leftHemisphere, x+w, y+h);
osg::Vec3 n01 = computePosition(leftHemisphere, x, y+h);
float radius = (center-n00).length();
radius = osg::maximum((center-n10).length(),radius);
radius = osg::maximum((center-n11).length(),radius);
radius = osg::maximum((center-n01).length(),radius);
float min_dot = normal*n00;
min_dot = osg::minimum(normal*n10,min_dot);
min_dot = osg::minimum(normal*n11,min_dot);
min_dot = osg::minimum(normal*n01,min_dot);
float angle = acosf(min_dot)+osg::PI*0.5f;
float deviation = (angle<osg::PI) ? deviation = cosf(angle) : -1.0f;
osg::ClusterCullingCallback* ccc = new osg::ClusterCullingCallback;
ccc->setControlPoint(center);
ccc->setNormal(normal);
ccc->setRadius(radius);
ccc->setDeviation(deviation);
geometry->setCullCallback(ccc);
}
geode->addDrawable(geometry);
return geode;
}
osg::Node* createTileAndRecurse(const std::string& filename, const std::string& basename, const std::string& extension, bool leftHemisphere, double x, double y, double w,double h, unsigned int numLevelsLeft)
osg::Node* createTileAndRecurse(const std::string& filename, const std::string& basename, const std::string& extension, bool leftHemisphere, unsigned int noTilesX, unsigned int noTilesY, double x, double y, double w,double h, unsigned int numLevelsLeft)
{
osg::Group* group = new osg::Group;
double dx = w / (double) noTilesX;
double dy = h / (double) noTilesY;
if (numLevelsLeft>0)
{
std::string basename1 = basename+"_1";
std::string basename2 = basename+"_2";
std::string basename3 = basename+"_3";
std::string basename4 = basename+"_4";
{
osg::ref_ptr<osg::Node> node = createTileAndRecurse(filename,basename1,extension,leftHemisphere,x,y,w*0.5,h*0.5,numLevelsLeft-1);
osgDB::writeNodeFile(*node, basename1+extension);
}
{
osg::ref_ptr<osg::Node> node = createTileAndRecurse(filename,basename2,extension,leftHemisphere,x+w*0.5,y,w*0.5,h*0.5,numLevelsLeft-1);
osgDB::writeNodeFile(*node, basename2+extension);
}
{
osg::ref_ptr<osg::Node> node = createTileAndRecurse(filename,basename3,extension,leftHemisphere,x,y+h*0.5,w*0.5,h*0.5,numLevelsLeft-1);
osgDB::writeNodeFile(*node, basename3+extension);
}
{
osg::ref_ptr<osg::Node> node = createTileAndRecurse(filename,basename4,extension,leftHemisphere,x+w*0.5,y+h*0.5,w*0.5,h*0.5,numLevelsLeft-1);
osgDB::writeNodeFile(*node, basename4+extension);
}
float cut_off_distance = h*osg::PI;
float cut_off_distance = 4.0f*dy*osg::PI;
float max_visible_distance = 1e7;
// create current layer, and write to disk.
unsigned int numTiles = 0;
double lx = x;
for(unsigned i=0;i<noTilesX;++i,lx+=dx)
{
double ly = y;
for(unsigned j=0;j<noTilesY;++j,ly+=dy)
{
// create name for tile.
char char_num = 'A'+numTiles;
std::string lbasename = basename+"_"+char_num;
// create the subtiles and write out to disk.
{
osg::ref_ptr<osg::Node> node = createTileAndRecurse(filename,lbasename,extension,leftHemisphere,2,2,lx,ly,dx,dy,numLevelsLeft-1);
osgDB::writeNodeFile(*node, lbasename+extension);
}
// create PagedLOD for tile.
osg::PagedLOD* pagedlod = new osg::PagedLOD;
osg::Node* tile = createTile(filename,leftHemisphere,x,y,w*0.5,h*0.5);
osg::Node* tile = createTile(filename,leftHemisphere,lx,ly,dx,dy);
pagedlod->addChild(tile, cut_off_distance,max_visible_distance);
pagedlod->setRange(1,0.0f,cut_off_distance);
pagedlod->setFileName(1,basename1+extension);
pagedlod->setCenter(computePosition(leftHemisphere,x+w*0.25,y+h*0.25));
pagedlod->setFileName(1,lbasename+extension);
pagedlod->setCenter(computePosition(leftHemisphere,lx+dx*0.5,ly+dy*0.5));
group->addChild(pagedlod);
// increment number of tiles.
++numTiles;
}
{
osg::PagedLOD* pagedlod = new osg::PagedLOD;
osg::Node* tile = createTile(filename,leftHemisphere,x+w*0.5,y,w*0.5,h*0.5);
pagedlod->addChild(tile, cut_off_distance,max_visible_distance);
pagedlod->setRange(1,0.0f,cut_off_distance);
pagedlod->setFileName(1,basename2+extension);
pagedlod->setCenter(computePosition(leftHemisphere,x+w*0.75,y+h*0.25));
group->addChild(pagedlod);
}
{
osg::PagedLOD* pagedlod = new osg::PagedLOD;
osg::Node* tile = createTile(filename,leftHemisphere,x,y+h*0.5,w*0.5,h*0.5);
pagedlod->addChild(tile, cut_off_distance,max_visible_distance);
pagedlod->setRange(1,0.0f,cut_off_distance);
pagedlod->setFileName(1,basename3+extension);
pagedlod->setCenter(computePosition(leftHemisphere,x+w*0.25,y+h*0.75));
group->addChild(pagedlod);
}
{
osg::PagedLOD* pagedlod = new osg::PagedLOD;
osg::Node* tile = createTile(filename,leftHemisphere,x+w*0.5,y+h*0.5,w*0.5,h*0.5);
pagedlod->addChild(tile, cut_off_distance,max_visible_distance);
pagedlod->setRange(1,0.0f,cut_off_distance);
pagedlod->setFileName(1,basename4+extension);
pagedlod->setCenter(computePosition(leftHemisphere,x+w*0.75,y+h*0.75));
group->addChild(pagedlod);
}
}
}
else
{
// create current layer, and write to disk.
double lx = x;
for(unsigned i=0;i<noTilesX;++i,lx+=dx)
{
group->addChild(createTile(filename,leftHemisphere,x,y,w*0.5,h*0.5));
group->addChild(createTile(filename,leftHemisphere,x+w*0.5,y,w*0.5,h*0.5));
group->addChild(createTile(filename,leftHemisphere,x,y+h*0.5,w*0.5,h*0.5));
group->addChild(createTile(filename,leftHemisphere,x+w*0.5,y+h*0.5,w*0.5,h*0.5));
double ly = y;
for(unsigned j=0;j<noTilesY;++j,ly+=dy)
{
group->addChild(createTile(filename,leftHemisphere,lx,ly,dx,dy));
}
}
}
@@ -277,8 +270,8 @@ bool createWorld(const std::string& left_hemisphere, const std::string& right_he
osg::ref_ptr<osg::Group> group = new osg::Group;
group->addChild(createTileAndRecurse(left_hemisphere, base+"_west", extension, true, 0.0, 0.0, 1.0, 1.0, numLevels));
group->addChild(createTileAndRecurse(right_hemisphere, base+"_east", extension, false, 0.0, 0.0, 1.0, 1.0, numLevels));
group->addChild(createTileAndRecurse(left_hemisphere, base+"_west", extension, true, 5,5, 0.0, 0.0, 1.0, 1.0, numLevels));
group->addChild(createTileAndRecurse(right_hemisphere, base+"_east", extension, false, 5,5, 0.0, 0.0, 1.0, 1.0, numLevels));
osg::StateSet* stateset = group->getOrCreateStateSet();
stateset->setMode(GL_CULL_FACE,osg::StateAttribute::ON);
@@ -331,7 +324,7 @@ int main( int argc, char **argv )
std::string left_hemisphere("land_shallow_topo_west.tif");
std::string right_hemisphere("land_shallow_topo_east.tif");
std::string basename("bluemarble.ive");
std::string basename("BlueMarble/bluemarble.ive");
createWorld(left_hemisphere,right_hemisphere,basename,4);