SG_PLANE_AND_LINE sgSpaceMath::IntersectPlaneAndLine(const SG_VECTOR& planeNorm, const double planeD, const SG_POINT& lineP, const SG_VECTOR& lineDir, SG_POINT& resP)
Calculates the positional relationship of the line and the plane. If they are intersecting the function returns the point of intersection.
planeNorm - normal to the plane,
planeD - free coefficient in the plane equation,
lineP - point on the line,
lineDir - direction vector of the line,
resP - the found intersection point of the line and the plane
One of the following values is returned:
SG_LINE_PARALLEL - if the line is parallel to the plane and lie on it, the resP value won't be changed,
SG_LINE_ON_PLANE - if the line lies on the plane, the resP value won't be changed,
SG_EXIST_INTERSECT_PONT - if the line and the plane are intersecting, resP will be the point of intersection.