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Added osgSim::LineOfSight and osgSim::HeightAboveTerrain classes

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This commit is contained in:
Robert Osfield
2006-10-30 20:29:06 +00:00
parent c615f7345c
commit 16c238fc60
6 changed files with 90 additions and 2 deletions
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58
examples/osgintersection/osgintersection.cpp
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@@ -8,6 +8,8 @@
#include <osgUtil/IntersectionVisitor>
#include <osgSim/LineOfSight>
#include <iostream>
struct MyReadCallback : public osgUtil::IntersectionVisitor::ReadCallback
@@ -45,8 +47,62 @@ int main(int argc, char **argv)
bool useIntersectorGroup = true;
bool useLineOfSight = true;
if (useIntersectorGroup)
if (useLineOfSight)
{
osg::Timer_t startTick = osg::Timer::instance()->tick();
osg::Vec3d start = bs.center() + osg::Vec3d(0.0,bs.radius(),0.0);
osg::Vec3d end = bs.center();// - osg::Vec3d(0.0, bs.radius(),0.0);
osg::Vec3d deltaRow( 0.0, 0.0, bs.radius()*0.01);
osg::Vec3d deltaColumn( bs.radius()*0.01, 0.0, 0.0);
unsigned int numRows = 50;
unsigned int numColumns = 50;
osgSim::LineOfSight los;
for(unsigned int r=0; r<numRows; ++r)
{
for(unsigned int c=0; c<numColumns; ++c)
{
osg::Vec3d s = start + deltaColumn * double(c) + deltaRow * double(r);
osg::Vec3d e = end + deltaColumn * double(c) + deltaRow * double(r);
los.addLOS(s,e);
}
}
los.computeIntersections(root.get());
osg::Timer_t endTick = osg::Timer::instance()->tick();
std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
#if 0
for(unsigned int i=0; i<los.getNumLOS(); i++)
{
const osgSim::LineOfSight::Intersections& intersections = los.getIntersections(i);
for(osgSim::LineOfSight::Intersections::const_iterator itr = intersections.begin();
itr != intersections.end();
++itr)
{
std::cout<<" point "<<*itr<<std::endl;
}
}
#endif
// now do a second traversal to test performance of cache.
startTick = osg::Timer::instance()->tick();
los.computeIntersections(root.get());
endTick = osg::Timer::instance()->tick();
std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
}
else if (useIntersectorGroup)
{
osg::Timer_t startTick = osg::Timer::instance()->tick();