Hi Tom,
Yes, I should have probbaly tried outputting values to the console a little
earlier. It appears there is a bug in VS 2005 while setting a watch on
variables in member functions in classes.
So I have managed to narrow down my problem to the following lines of code:
xPos and yPos are legitimate value.
However backhoeContactPoint.x and .y show 0 as output.
I also noted that the Intersection backhoeIntersection has its member matrixd
showing: error unable to access inavlid memory location.
But this method was working for me when I was updating position through
keyboard input.
Code:
//PROBLEM STARTS FROM HERE AS CONSOLE OUTPUT SHOWS VALUE 0:
osgUtil::LineSegmentIntersector* backhoeLocationSegment =
new osgUtil::LineSegmentIntersector(
osg::Vec3d(xPos, yPos, 99999),
osg::Vec3d(xPos, yPos, -99999));
osgUtil::IntersectionVisitor findBackhoeElevationVisitor;
findBackhoeElevationVisitor.setIntersector(backhoeLocationSegment);
surface->accept(findBackhoeElevationVisitor);
osgUtil::LineSegmentIntersector::Intersection backhoeIntersection =
backhoeLocationSegment->getFirstIntersection();
osg::Vec3d backhoeContactPoint =
backhoeIntersection.getWorldIntersectPoint();
Console::WriteLine("backhoeContactPoint.x: {0}",
backhoeContactPoint.x());
Console::WriteLine("backhoeContactPoint.y: {0}",
backhoeContactPoint.y());
return backhoeContactPoint;
What can I infer from this ?
Thanks,
Sanat
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=30214#30214
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