Gabriele Cosmo
76 lines
1.6 KiB
Plaintext
76 lines
1.6 KiB
Plaintext
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inline G4double G4Line::GetPMax() { return -1; }
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inline G4Point3D G4Line::GetPoint(G4double param) { return pnt+param*dir; }
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inline G4double G4Line::GetPPoint(const G4Point3D& pt)
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{
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return (pt-pnt)*invDir;
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}
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////////////////////////////////////////////////////////////////////////////
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inline void G4Line::Init(const G4Point3D& pnt0, const G4Vector3D& dir0) {
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pnt= pnt0;
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dir= dir0;
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invDir= dir*(1/dir.mag2());
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v= dir.unit();
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}
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inline G4Point3D G4Line::GetPnt() const {
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return pnt;
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}
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inline G4Vector3D G4Line::GetDir() const {
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return dir;
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}
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///////////////////////////////////////////////////////////////////////////
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inline void G4Line::InitBounded() {
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bBox.Init(GetStart(), GetEnd());
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}
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///////////////////////////////////////////////////////////////////////////
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#include "G4CurveRayIntersection.hh"
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inline void G4Line::IntersectRay2D(const G4Ray& ray,
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G4CurveRayIntersection& is)
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{
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is.Init(*this, ray);
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G4CurveRayIntersection isTmp(*this, ray);
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const G4Point3D& s= ray.GetStart();
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const G4Vector3D& d= ray.GetDir();
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G4double num= (s.x()-pnt.x())*v.y()-(s.y()-pnt.y())*v.x();
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G4double denom= d.y()*v.x()-d.x()*v.y();
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if (denom < kAngTolerance) {
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if (num < kCarTolerance) {
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// identical lines
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isTmp.ResetDistance(kCarTolerance);
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is.Update(isTmp);
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isTmp.Reset(GetPStart(), GetStart());
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is.UpdateWithPointOnCurve(isTmp);
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isTmp.Reset(GetPEnd(), GetEnd());
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is.UpdateWithPointOnCurve(isTmp);
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} else {
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// parallel lines
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}
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} else {
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// properly intersecting lines
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isTmp.ResetDistance(num/denom);
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is.Update(isTmp);
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}
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}
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