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in SphereMode::Hit added a check on the sphere intersection, if no intersection, calculating distance could generate a NAN exception

This commit is contained in:
Marco Callieri 2005-07-15 16:39:30 +00:00
parent 8ca165bb98
commit bf23eca7be
1 changed files with 13 additions and 7 deletions
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6
wrap/gui/trackmode.cpp
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@ -24,6 +24,9 @@
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$Log: not supported by cvs2svn $
Revision 1.13 2005/06/29 15:22:26 callieri
changed the name of some intersection functions to avoid ambiguity
Revision 1.12 2005/02/11 11:44:07 tommyfranken
Trackball translation corrected
@ -225,9 +228,12 @@ Point3f SphereMode::Hit(Trackball *tb, const Point3f &p) {
IntersectionLinePlane<float>(vp, ln, hitPlane);
Sphere3f sphere(tb->center,tb->radius);
bool resSp = IntersectionLineSphere<float>(sphere, ln, hitSphere1, hitSphere2);
if(resSp == true)
{
if(Distance(viewpoint,hitSphere1)<Distance(viewpoint,hitSphere2))
hitSphere=hitSphere1;
else hitSphere=hitSphere2;
}
/*float dl=*/Distance(ln,tb->center);
bool resHp = HitHyper(tb->center, tb->radius, viewpoint, vp, hitPlane, hitHyper) ;